no. technical specification - bidnet 2.2 the transformer manufacturer shall provide calculations and...

TECHNICAL SPECIFICATION

No. SS1406 of 4

REV 0 DATE: 06/10

CATEGORY

TRANSFORMERS/ REGULATORS

SUBJECT

ELECTRICAL DESIGN REVIEW CHECK LIST

TABLE OF CONTENTS

1. PURPOSE ........................................................................................................................ 2

2. SCOPE ............................................................................................................................. 2

3. CORE MATERIAL ............................................................................................................ 2

4. CORE DESIGN AND CONSTRUCTION.......................................................................... 2

5. WINDINGS........................................................................................................................ 2

6. COIL SIZING; AND PROCESSING ................................................................................. 2

7. INSULATION DESIGN ..................................................................................................... 3

8. TAP CHANGER, TAP WINDING ..................................................................................... 3

9. THERMAL ........................................................................................................................ 3

10. STRAY FLUX CONTROL............................................................................................... 3

11. SHORT-CIRCUIT ............................................................................................................ 4

12. BUSHINGS ..................................................................................................................... 4

13. TESTING ......................................................................................................................... 4

TECH. SPEC. SS1406

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1. PURPOSE

This check list is intended as an attachment to a power transformer purchase specification. It provides a general idea of the information required to be furnished by the manufacturer for the District’s review of the transformer design.

2. SCOPE

The District’s electrical design review may include, but is not limited to, the following.

3. CORE MATERIAL

3.1 supplier 3.2 laser etched 3.3 induction level 3.4 destruction factor

4. CORE DESIGN AND CONSTRUCTION

4.1 configuration(3 -legged, etc) 4.2 core temperature rise due to no-load flux 4.3 cooling duct design 4.4 stray flux profile on face of core 4.5 core face temperature rise due to stray flux 4.6 cutting and slitting system, type of burr control 4.7 type of joint and joint control 4.8 method of binding core legs and yokes together 4.9 core clamp design 4.10 core ground design and location 4.11 stray flux heating and circulating current control

5. WINDINGS

5.1 transposition locations and type 5.2 bracing of transpositions for inward radial forces 5.3 magnitude of circulating current 5.4 winding tube material 5.5 winding arrangement 5.6 conductor type in each winding (size, strength, and insulation) 5.7 current density in each winding

6. COIL SIZING; AND PROCESSING

6.1 method for sizing coils and dimensional tolerances allowed

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6.2 coil drying method prior to assembly 6.3 coil drying method after assembly 6.4 loss of insulation life during drying 6.5 timing and process for curing of epoxy on CTC (Continuously Transposed

Conductor) 6.6 coil processing/clamping pressures 6.7 methods for equalizing clamping pressure on each winding in service

7. INSULATION DESIGN

7.1 major insulation design(spacing, barrier locations, flange locations, etc) 7.2 impulse voltage distribution and stresses 7.3 induced voltage stresses 7.4 electrostatic and ground shield locations 7.5 lead spacing 7.6 de-energized tap changer voltage stresses 7.7 test or operating voltage which is most critical for each winding spacing

8. TAP CHANGER, TAP WINDING

8.1 manufacturer 8.2 current and voltage rating 8.3 mounting location and mounting details 8.4 zinc oxide design, clamping voltages, leakage current during test and operation

9. THERMAL

9.1 oil rises for each stage of cooling 9.2 winding gradients for each stage of cooling 9.3 winding hot-spots and their location 9.4 method used for hot-spot calculation 9.5 lead temperatures 9.6 method for making joints and their temperature 9.7 manufacturer of cooling equipment

10. STRAY FLUX CONTROL

10.1 design details for tank wall flux shunts 10.2 maximum induction level in tank wall flux shunts 10.3 tank temperatures in unshielded regions of tank 10.4 heating of other metallic, non-active parts 10.5 existence of floating(ungrounded) metallic fasteners

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11. SHORT-CIRCUIT

11.1 type of fault which is most severe and how calculated 11.2 axial forces(conductor tipping, radial spacer pressure and beam bending) 11.3 radial forces, buckling and tension 11.4 coil clamping plate deflection 11.5 core clamping frames and tie bars 11.6 lead forces and bracing

12. BUSHINGS

12.1 manufacturer 12.2 rating 12.3 electrostatic shield locations if any

13. TESTING

13.1 confirm that all tests are to ANSI Standards 13.2 method of addressing zinc oxide effect on impulse and switching surge tests 13.3 calibration method of thermal CT's 13.4 type of impulse records(Xerox, digital, etc) 13.5 can required impulse wave shapes be met on all terminals? 13.6 review recent test failures


No. SS1407 Page 1 of 3

REV 0 DATE: 06/10

CATEGORY


SUBJECT

STRUCTURAL DESIGN REVIEW CHECK LIST

TABLE OF CONTENTS

1. PURPOSE ........................................................................................................................ 2

2. SCOPE ............................................................................................................................. 2

3. STRUCTURAL DESIGN SCOPE ..................................................................................... 2

4. STRUCTURAL DESIGN DETAILS .................................................................................. 3

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1. PURPOSE

This check list is intended as an attachment to a power transformer purchase specification. It provides a general idea of the information required to be furnished by the manufacturer for the District’s review of the transformer design. This check list is for information only and is not intended to cover all of the design requirements for the applicable equipment.

2. SCOPE

2.1 The transformer manufacturer shall provide complete information for the District’s detailed structural design review. This includes complete calculations which clearly demonstrate that the equipment meets all of the requirements of the District’s Technical Specifications. The information shall include sufficient factory structural design drawings to verify the information provided in the manufacturer’s calculations. The design drawings shall include plan and section views of the components considered, material information including plate thicknesses, plate material specifications, weld sizes, weld material specifications, bolt sizes, bolt material specifications, and so forth. The calculations shall be clearly referenced to the applicable design drawings.

2.2 The transformer manufacturer shall provide calculations and drawings in a report format signed and stamped by a currently licensed California Structural Engineer in accordance with the requirements of the applicable District Technical Specification.

2.3 The District’s design review will verify compliance with the District’s Technical Specifications, IEEE 693, and the California Building Code. It will address loading for all three orthogonal axes.

2.4 The District’s structural design review may include, but is not limited to, the following.

3. STRUCTURAL DESIGN SCOPE

3.1 The structural design shall consider loads due to:

3.1.1 Wind 3.1.2 Seismic 3.1.3 Operation 3.1.4 Transportation and Handling

3.2 The structural design shall consider the following components:

3.2.1 Transformer main structure: A Core and coil support structures.

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B Structure including tank cover, walls, and base. C Base anchorage. D Load path from the core, coils, tank, and base to the anchorage.

3.2.2 Major appendage structures and bolted/welded connections, including:

A Radiators B Conservators C Tap changer D Control cabinets E High voltage fuse support assemblies

3.2.3 Bushings

3.2.4 Surge arresters, including support structures

4. STRUCTURAL DESIGN DETAILS

Design review will include the following details. (All moving load calculations will be based on transformer filled with oil.)

4.1 All items listed in section 3, with a summary spreadsheet showing actual and allowable loads/stresses, and safety factors.

4.2 Anchorage appendages 4.3 Anchor bolt loads, for governing load combinations of wind, seismic, and

operation 4.4 Tank pressure/vacuum/rupture 4.5 Main transformer lifting lugs (for lifting fully assembled transformer) 4.6 Tank base deflection during lifting or jacking 4.7 Jacking lugs (for jacking fully assembled transformer) 4.8 Skidding/rolling supports on base (for skidding/rolling fully assembled

transformer) 4.9 Pulling lugs (for skidding/rolling fully assembled transformer) 4.10 Cover lifting lugs 4.11 Fall protection anchors/devices 4.12 Allowable transportation loads (for impact recorder review during and

following transportation activities).



REV 5 DATE: 05/09

CATEGORY

WIRE/CABLE

SUBJECT

DISTRICT’S EQUIPMENT WIRING REQUIREMENTS

TABLE OF CONTENTS 1 PURPOSE ......................................................................................................... 3

2 SCOPE ............................................................................................................... 3

3 REFERENCES ................................................................................................. 3

4 DEFINITIONS ................................................................................................... 4

5 WIRING DIAGRAMS ....................................................................................... 4

5.1 ......POINT-TO-POINT WIRING ........................................................................................... 4

5.2 ......DEVICE LOCATION DESIGNATOR ............................................................................ 5

5.3 ......DEVICE FUNCTION DESIGNATOR ............................................................................ 6

5.4 ......DEVICE INTERNALS ...................................................................................................... 7

5.5 ......DEVICE JUMPER CONNECTIONS ............................................................................. 7

5.6 ......SWITCHBOARD IDENTIFICATIONS ........................................................................... 7

5.7 ......USE OF HYPHEN IN CONNECTION IDENTIFICATION .......................................... 7

5.8 ......EXTERNAL CONNECTIONS ......................................................................................... 8

5.9 ......OTHER DRAWING DETAILS ........................................................................................ 9

5.10 ....CABLE SHIELD CONNECTIONS ................................................................................. 9

6 WIRING INSTALLATION & LABELING ...................................................... 9

6.1 ......FACTORY WIRING ......................................................................................................... 9

6.2 ......CONNECTION ON A SWITCHBOARD TO A COMMON CIRCUIT ...................... 10

6.3 ......SPARE AND UNUSED CONTACTS AND I/O POINTS .......................................... 10

6.4 ......SHIELDED WIRE ........................................................................................................... 10

6.5 ......PHASE MARKING ......................................................................................................... 11

6.6 ......NAMEPLATES ................................................................................................................ 11

6.7 ......GROUND BUS ............................................................................................................... 12

6.8 ......TEST SWITCH CONNECTIONS ................................................................................ 12

6.9 ......WIRING REQUIRING SPECIAL TOOLS ................................................................... 13

6.10 ....TERMINAL NUMBERING ............................................................................................. 13

6.11 ....WIRE LABELS ................................................................................................................ 13



REV 5 DATE: 05/09

CATEGORY

WIRE/CABLE

SUBJECT

DISTRICT’S EQUIPMENT WIRING REQUIREMENTS

6.12 ....WIREWAY FILL ............................................................................................................. 13

6.13 ....WIRE BUNDLING .......................................................................................................... 13

6.14 ....HINGE WIRING ............................................................................................................. 14

6.15 ....TERMINATION OF WIRES .......................................................................................... 14

6.16 ....TERMINAL BLOCKS ..................................................................................................... 15

6.17 ....TERMINAL BLOCK MOUNTING SPACE AND USAGE ......................................... 16

6.18 ....TERMINAL BLOCK SPARE TERMINALS ................................................................. 16

6.19 ....CURRENT CIRCUITS ................................................................................................... 16

6.20 ....WIRE SIZING ................................................................................................................. 17

6.21 ....SWITCHBOARD WIRE & INSULATION .................................................................... 17

6.22 ....TERMINAL BLOCK AND CURRENT TEST SWITCH TERMINAL SIZE .............. 17

6.23 ....CABLE SPARE CONDUCTORS ................................................................................. 17

6.24 ....INTERCONNECTIONS BETWEEN SHIPPING SPLITS ......................................... 18

6.25 ...EXTERIOR WIRE WAYS ............................................................................................. 18

6.26 ....INTERIOR WIRE WAYS .............................................................................................. 18

7 TEST REQUIREMENTS ............................................................................... 18

7.1 ......CONTINUITY TESTS & WIRE LABEL VERIFICATION .......................................... 18

7.2 ......DIELECTRIC TESTS ..................................................................................................... 19

7.3 ......FUNCTIONAL TESTS ................................................................................................... 19

7.4 ......DISTRICT WITNESSED & CONDUCTED TESTS AT FACTORY ........................ 20

7.5 ......TEST WIRING ................................................................................................................ 20

8 QUALITY ASSURANCE ............................................................................... 20

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1 PURPOSE Specifies the design, construction, testing, and documentation required for the low-

voltage wiring of District electrical equipment.

2 SCOPE Specifies the wiring requirements for all 600 volt wiring within District switchboards

as defined herein. This specification is included by reference in the purchase specifications for District purchased equipment. It is also used as a standard for District designed and installed wiring.

Additional or modified wiring requirements may be defined in the District’s technical specification for a specific equipment's supply. Those requirements shall take precedence over the requirements defined in this specification. When modifications are made to existing District switchboards, drawing changes may follow the existing drawing format rather than this specification’s format. The District’s Project Engineer will make this decision.

3 REFERENCES

3.1 Switchboards shall be designed, manufactured, and supplied in accordance with the latest applicable standards and requirements of:

3.1.1 National Electric Manufacturers Association (NEMA) 3.1.2 American National Standards Institute (ANSI) 3.1.3 American Society for Testing and Materials (ASTM)

3.1.4 Institute of Electrical and Electronic Engineers (IEEE) 3.1.5 National Fire Protection Association (NFPA)

3.1.6 CAL/OSHA - Title 8, Chapter 4, Subchapter 5 3.2 Emphasis shall be assigned to the following standards: 3.2.1 ANSI/IEEE C37.1 Standard Definition, Specification and Analysis of

systems used for supervisory control, data acquisition, and automatic control

3.2.2 IEEE C37.2 Standard Electrical Power System Device Function Numbers and Contact Designations

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3.2.3 IEEE C37.21 Standard for Control Switchboards 3.2.4 ANSI/IEEE C37.90 Standard for Relays and Relay Systems

Associated with Electric Power Apparatus 3.2.5 IEEE C37.100 Standard Definitions for Power Switchgear 3.2.6 NFPA 70 National Electrical Code

3.3 In case of a conflict with any of the above standards and this specification, this specification shall govern.

4 DEFINITIONS 4.1 Switchboard - As used in this document, an assembly on which low voltage

electrical devices are mounted and wired. Typical examples are a Control and Relay Panel line-up, a switchgear assembly, and a power circuit breaker control cabinet. A switchboard may contain several panels, sub panels, and/or substructures.

4.2 Wiring Diagram - Wiring diagrams depict the relative physical arrangement

of devices, device terminal layouts and wire connections, as viewed from the wiring side of the switchboard. These diagrams clearly show the opposite end connecting points for each wire.

4.3 Device Terminal Layout - A device's physical (relational) arrangement of

terminals. 4.4 Device Location Designator - A notation which describes the location of a

device on a switchboard, refer to section 5.2. 4.5 Device Function Designator - A notation which describes the function and

application of a device, refer to section 5.3.

5 WIRING DIAGRAMS

5.1 POINT-TO-POINT WIRING The District requires a point-to-point tabular form of wiring diagram.

Connections are indicated by the use of Device Location Designators on

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assigned devices and terminal (Stud) numbers on the devices. Connections are listed terminal by terminal in a table (Device Connection Table) next to the device depiction indicating the remote connection point of each wire. For terminal blocks a device connection table is not required; remote connection points for internal wires are listed next to the terminal depiction.

5.2 DEVICE LOCATION DESIGNATOR

Pairs or groups of letters are assigned to identify the location of each device on a switchboard. The device location designator is formed logically to represent the device location as follows: 5.2.1 In a sequential order, assign identification letter(s) to all devices on

each panel or substructure. Device location sequence on each panel or substructure shall proceed from left to right and then from top to bottom, as viewed from the wiring side. Letters may be skipped if appropriate to allow for the addition of future devices.

5.2.2 If the switchboard is composed of

several panels or substructures a prefix is added to identify the panel or substructure. A switchboard key layout diagram shall be shown on each wiring diagram. This key layout diagram shall show the panels or substructures, their identification characters, their relative physical positions, and the reference drawing numbers of the wiring diagrams when the switchboard wiring is shown on more than one drawing.

5.2.3 In some cases, such as transmission relay panels, each functional

grouping of devices may be defined as a separate substructure with a separate left most character. See the Districts Project Engineer for approval.

5.2.4 An example of a switchboard with multiple panels is:

5.2.4.1 A distribution substation with multiple feeders where the upper and lower cells for feeder one are identified with the prefix 1A and 1B. The upper and lower cells for feeder two

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are identified with the prefix 2A and 2B, etc. Terminal 3 on device AB in cell 1A would be shown as 1A-AB3.

5.2.4.2 A transmission substation switchboard with front and rear panel sections may be identified as 1F and 1R, 2F and 2R, etc. Terminal 3 on device AB in panel 2R would be shown as 2R-AB3.

5.2.4.3 When a wire starts and ends on the same panel or substructure, the panel or cell designation shall be omitted from the wire label or the diagram.

5.2.5 Terminal blocks shall be identified by the designator, “TB” for

Terminal Block or “SB” for current Shorting Block followed by a pair of letters. The first letter shall identify the panel section (left, right, rear, and door) where the terminal block is located. The second letter shall be assigned from left to right or from top to bottom within each panel or substructure. Letters may be skipped if appropriate to allow for the addition of future terminal blocks.

5.2.6 Do not repeat a device location designator within the same section of

a switchboard.

5.2.7 The letters I, O, & Q shall not be used.

5.3 DEVICE FUNCTION DESIGNATOR Each device on a switchboard is identified by a device function designator.

The device function designator is defined from the schematic and/or elementary. F151N, L121-2, and TBAA typify device function designators. The following two parts generally form these designations: 1) An identification of the substation line, bus, feeder, or other equipment

for which the device is applied, i.e. L1, B1, F2 (This part is not required if all devices on the switchboard would use the same identifier), and

2) An ANSI standard function number designation, i.e. 51N, 21-2. Terminal blocks are functionally identified on the schematic by their device location designator, "TB" followed by a pair of letters as described above.

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5.4 DEVICE INTERNALS Show device internal components (contacts, SCRs, and coils, etc.) between

terminals in the device terminal layout depiction of the wiring diagram. These components shall be represented (open or closed) as shown on the schematic. For complex electronic or microprocessor devices on which it is not feasible to show the internal components, the terminal physical arrangement only is shown.

5.5 DEVICE JUMPER CONNECTIONS Jumper connections between terminals of the same device or terminal

block are shown by drawing line(s) connecting these terminals on the device terminal layout depiction (this is the preferred method), or in a list of jumpers adjacent to the device connection table. Point to point wire markers are not required on device jumpers.

5.6 SWITCHBOARD IDENTIFICATIONS

When more than one switchboard is shown on a drawing, each switchboard's connections must be clearly identified and separated. On the wiring drawing, outline the switchboards' connection areas and identify each area with the switchboard name. This clearly shows the area on which each switchboard’s connections are shown on the drawing.

5.7 USE OF HYPHEN IN CONNECTION IDENTIFICATION Hyphens are used only when needed for clarity, to separate two

components of the connection identification that are both alphabetic or both numeric. This can occur when the device location designator is prefixed with the panel or substructure designator, per section 5.2.1. It can also occur when a terminal is identified by a letter instead of a number in the left most terminal ID position. For example:

DB3 (No hyphen) DB-L3 (Hyphen) TBA7 (No hyphen required for terminal block designator)

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5.8 EXTERNAL CONNECTIONS 5.8.1 Field cables (multiconductor jacketed cable) routed in conduit or tray

to other switchboards shall be placed on the external or field terminal side of terminal blocks and shown on the wiring diagram with hidden lines. These external connections shall also be entered in the "Interconnection Table." Connections to adjacent panels using SIS panel wiring are identified with point to point designations on the external side of the terminal blocks and are not listed in the interconnection table.

5.8.2 Interconnection Table For each switchboard, provide an interconnection table showing all

field cable connections to other switchboards. 5.8.2.1 When the other connecting switchboards are part of

the contractor’s supply, place an interconnection table at the top of the drawing within 8-1/2 inches of the drawing's right margin and complete it with the cable interconnection information.

5.8.2.2 When the other connecting switchboards are not part

of the contractors supply, provide blank space in an area 8-1/2 inches parallel to the drawing's right margin for the full height of the drawing for others to add the interconnection table.

5.8.2.3 Use the interconnection table format shown typically

below.

FIGURE 1

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5.9 OTHER DRAWING DETAILS

Show wiring construction detail in the switchboard wiring or other designated drawing(s) as follows:

5.9.1 Where hinge wire connections are required (per section 6.14), mark

an asterisk (*) after the connection on the device connection table or at the terminal block. Provide a note on the drawing stating that asterisks indicate hinge wire.

5.9.2 Switchboard layout drawings (front and rear views) shall show

nameplate positions and identification numbers, device bill of material numbers, and device function designations.

5.10 CABLE SHIELD CONNECTIONS Show shielded cable shield connections as follows:

5.10.1 Mark "SHLD" at the terminal in the device connection table where the shield is connected. See figure 1.

5.10.2 Graphically show the shield connection as illustrated in figure 2.

6 WIRING INSTALLATION & LABELING

6.1 FACTORY WIRING All circuits internal to the switchboard shall be completely wired at the

factory.

FIGURE 2 SHIELD CONNECTIONS

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6.2 CONNECTION ON A SWITCHBOARD TO A COMMON CIRCUIT All common connections inside a switchboard, typically an alarm positive,

shall be made up internally to the switchboard. This avoids running the common connection to more than one terminal block terminal, and then connecting between those terminals in order to complete the common circuit.

6.3 SPARE AND UNUSED CONTACTS AND I/O POINTS Wire spare and unused device contacts and input/output points with a

foreseeable future use to terminal blocks in sequential order. Normally open type contacts of lockout and trip relays shall be wired to terminal blocks through test switches. The District’s Project Engineer will make the final determination of which spare and unused points are wired out.

6.4 SHIELDED WIRE

Shielded power and control cable shall be grounded at both ends. Where shielded cable is used for instrumentation, the shields shall be grounded at the signal receiver (RTU, DFR, etc.) ground bus end only. Unless otherwise specified, all instrumentation shielded cable shall be two conductor copper twisted shielded pair No. 18 AWG.

6.4.1 ANALOG CIRCUITS

For analog signal circuits the shield shall be continuous from the field device output terminals to the terminals of the signal receiver device (typically an RTU), i.e. through terminal blocks, through test switches, etc. Where a shielded cable is terminated on a terminal block, the terminal next to the paired conductors' terminals shall be used for the shield connections.

6.4.2 DIGITAL (ON/OFF) CIRCUITS

For digital signal circuits the shield shall run from the terminals of the signal receiver device (typically an RTU), to the switchboard terminal blocks. Wiring internal to the switchboard can be run with unshielded wires. Avoid physically running these switchboard wires in parallel with the wires of AC current and voltage circuits.

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6.4.3 COMMUNICATION CIRCUITS

EIA-485 and EIA 232 cables shall be twisted shielded pair having a characteristic impedance of 120 ohms. DNP 3.0 circuits may require a 120-ohm resistor inserted at the end of line device.

6.4.4 EXCEPTIONS

Ethernet networks shall use unshielded twisted pair (UTP) cabling. The UTP cable contains eight conductors, arranged in four twisted pairs, and is terminated with an RJ45 type connector. A normal straight-through UTP Ethernet cable follows the EIA568B standard wiring.

6.5 PHASE MARKING All phase markings shall be 1/C, 2/B, and 3/A; with 1, 2, 3 vectors

positive sequenced when rotating counter clockwise per ANSI C37.21.

Figure 3

6.6 NAMEPLATES All control devices and terminal blocks shall be labeled on their front sides

with engraved lamacoid type identification nameplates. Front nameplates shall have minimum 1/4 inch high lettering, black on a white background. Attach them with threaded metal screws, not adhesives. All rear-wired devices shall also be labeled with nameplates on their rear wiring side. Provide and install nameplates on the rear wiring side in exactly the same way as on the front side, except that rear side nameplates may use permanent long life flexible adhesive instead of screws for attachment. Fasteners for rear nameplates shall not be visible on front.

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Identify the Device Function Designator on all nameplates. Identify the Device Location Designator on wiring-side nameplates only. A descriptive legend may also be required, as specified by the District’s Project Engineer. Locate nameplates so they are clearly visible after wiring is installed, and are not obscured by wire bundles. Each switchboard panel shall also have a large overall nameplate at the top with minimum 1/2 inch high lettering. Engraving shall be approved by the District’s Project Engineer.

6.7 GROUND BUS Each switchboard shall be supplied with a copper ground bus, ¼ inch by

one-inch minimum size.

6.7.1 Provide sufficient terminals on the ground bus to directly connect each device, test switch, terminal block, cable shield, etc. requiring a ground connection.

6.7.2 Provide a minimum of 20% additional un-used spare terminals on

each ground bus. 6.7.3 Wire ground connections directly to the ground bus so that the

ground to any single device, test switch, terminal block, etc. can be removed without affecting the ground connection to any other device.

6.7.4 Each ground bus shall be provided with two terminals to connect

NEMA 2-hole ground connectors for 4/0 copper cable.

6.7.5 Provide an integral electrical connection from the ground bus to the switchboard, having a one second current capacity of 10 kA equal to the one second current capacity of the 4/0 copper cable.

6.7.6 Switchboard enclosure metal shall not be used as part of the

continuity of the grounding system.

6.8 TEST SWITCH CONNECTIONS Install and wire test switches in accordance with SMUD Technical Design

Standard, Test Switches. Provide rear connected test switches for operation from the front of the panel.

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6.9 WIRING REQUIRING SPECIAL TOOLS Switchboard wiring shall not require the use of special wiring tools (such as

ABB Combiflex) unless specifically approved by the District. If approved: 6.9.1 The manufacturer shall supply one set of any special wiring tools

required for each switchboard. 6.9.2 The manufacturer shall supply a stock of special connection

hardware in a quantity equal to 10% of the total connection hardware used.

6.10 TERMINAL NUMBERING All device and terminal block terminals shall be clearly numbered, and the

numbers shall correspond to the numbers on the wiring diagrams. Terminal block terminals shall be numbered in numerical sequence.

6.11 WIRE LABELS At all wire terminations a machine-printed plastic shrink wrap sleeve label,

or District approved equal, shall identify the wire's remote termination (other end). Identification shall correspond to the switchboard panel designator (if required), device location designator, and terminal number, as used in the device connection tables of the wiring diagrams. The switchboard panel designator shall be omitted if both ends of the wire terminate on the same panel (Do not identify wires by any other notation on either the wiring diagram or wire labels). Wire labels shall be installed so they are clearly visible without moving wires, and shall read top to bottom and left to right. Short jumpers shall be labeled if they enter a wireway or bundle.

6.12 WIREWAY FILL The total cross sectional area of cables and wires in wire channels,

conduits, or tray shall comply with the NEC, but shall not exceed 40% of that wireway's cross sectional area. The Contractor shall analyze conductor loading, field installed cables, possible future expansion, and other design features to determine if further restrictions are required on the wireway fill.

6.13 WIRE BUNDLING When feasible, route all switchboard internal wiring in readily accessible

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wiring channels with snap-on covers. Wire bundles external to the channels shall be secured with nonmetallic wire wraps at intervals not exceeding eight inches apart. All wire wraps shall tie together all wires of the bundle. Wire wraps shall be secured to the switchboard structure using mechanical, non-adhesive fasteners. Wire bundles shall be installed clear of any device that racks in or out. No wire bundle shall be tied directly to any metal or structural device without sufficiently protecting it from abrasion. All wire runs shall be vertical or horizontal, never diagonal.

6.14 HINGE WIRING Wiring across hinges and wiring that will be subjected to movement during

maintenance or other operations shall be arranged to twist around its longitudinal axis in order to avoid bending the wire. This hinge wiring shall be made of wire strand no larger than No. 32 AWG. This wiring shall be protected from rubbing on or touching exposed metal edges. The Contractor shall minimize the amount of wiring across door hinges by connecting the common circuit points together on a moveable panel (refer to above section 6.2). Hinge wiring shall not obstruct door movement.

6.15 TERMINATION OF WIRES All wires shall be terminated on device terminals or on terminal blocks. Do

not splice or tap-connect any wire. Insulated compression ring tongue type lugs shall be used, one lug per wire. Wires shall be stripped and installed in the lug so that no bare wire is visible at the barrel end of the lug yet the bare wire is visible at the ring tongue end of the lug. No wire strands shall be cut or removed prior to lug insertion. Current circuit terminal lugs shall not be insulated. A maximum of two wires in ring tongue lugs per termination point shall be installed. All lug crimps shall be completely visible and not covered with labels.

6.15.1 Insulated terminal lugs shall be self-insulated with high dielectric-

strength nylon sleeves, rated for temperatures up to 1050C. The nylon jacket shall be color coded to identify the appropriate wire size:

Red 22-16 AWG Blue 18-14 AWG Yellow 12-10 AWG

6.15.2 Insulated terminal lugs shall be crimped with ratchet-type crimping

tool having a color-coded crimping nest matching the terminal lug color. The ratcheting mechanism must be fully closed before tool is allowed to open, ensuring a proper crimp.

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6.15.3 Non-insulated terminal lugs shall be crimped with ratchet-type

crimping tool having a crimping nest matching the size of the terminal lug. The ratcheting mechanism must be fully closed before tool is allowed to open, ensuring a proper crimp.

6.15.4 Ring tongue lugs shall be used wherever possible. Where ring

tongue lugs cannot be used Molex wire pin terminal lugs, or District approved equal, may be used. A maximum of one pin terminal lug per termination point shall be installed, unless otherwise approved by the District.

6.15.5 Wires brought out of a device without terminals (pigtails) shall be

terminated on terminal blocks, and not spliced.

6.16 TERMINAL BLOCKS Terminal blocks shall be provided in all circuits leaving a switchboard to connect to a device(s) on another switchboard. Exception: some current circuits (refer to section 6.19). 6.16.1 Terminal block terminals shall have slotted head screws. 6.16.2 Control (600V, 30A) terminal blocks shall be single-piece, phenolic

assembly G.E. No. EB25B12, Buchanan No. B112, or District approved equal. Each terminal shall be permanently identified with a sequential number.

6.16.3 CT shorting terminal blocks shall be single-piece, phenolic assembly

G.E. No. EB27B06S, Buchanan No. 4B106P, or District approved equal.

6.16.4 Heavy duty (600V, 75A) terminal blocks shall be single-piece,

phenolic assembly and be suitable for use with crimp type ring tongue lugs.

6.16.5 Power (600V, 230A) stud terminal blocks shall be single-piece,

phenolic assembly Marathon No. 14xx series, or District approved equal.

6.16.6 The terminal block terminals shall be grouped such that terminals for

connections going to a common external switchboard are adjacent. Adjacent common external switchboard terminals shall be further

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grouped by function, such as potential transformer circuits, current transformer circuits, AC power circuits, and DC control circuits.

6.16.7 Group and locate terminal blocks for easy accessibility and easy

connection to external circuits. The arrangement of circuits on terminal blocks shall be subject to District approval.

6.17 TERMINAL BLOCK MOUNTING SPACE AND USAGE

Provide sufficient space and support for all District-installed cables and wires to be routed and connected on terminal blocks. Internal wires shall be installed on one side of terminal blocks, with the other side left open for District-installed cables. The Contractor shall not terminate wires from devices inside the switchboard on the side provided for external cable and wire interconnections. Provide sufficient space on each side of each terminal block to allow an orderly arrangement of all wires terminated. The space between parallel terminal blocks shall be four inches minimum.

6.18 TERMINAL BLOCK SPARE TERMINALS Provide a minimum of twenty percent (20%) spare terminal block points.

Evenly distribute ten percent (10%) of the spare terminal points among the terminal blocks. Provide the other ten percent (10%) spare terminal points on entirely unused terminal blocks. Terminals used for shields, grounding or connecting unused contacts and devices are not considered spare.

6.19 CURRENT CIRCUITS

6.19.1 Current circuit wiring shall not be spliced. 6.19.2 Current circuits shall not terminate on standard terminal blocks.

6.19.3 Current secondary circuits shall be grounded at one point only. 6.19.4 CT leads shall terminate directly on CT shorting blocks unless the

CT leads first pass through a pressure penetration.

6.19.4.1 Current circuit pressure penetrations shall not be spliced.

6.19.4.2 Current circuit pressure penetrations shall have stud or

bolted terminals suitable for termination of #10 AWG ring

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tongue lugs.

6.19.5 Current circuits shall enter and leave a switchboard as follows: 6.19.5.1 Field cables entering a switchboard from a remotely

located CT shall terminate directly on a CT test switch. 6.19.5.2 When equipment is split for shipping the CT shorting

block shall be installed and wired in the same section where the CT is installed.

6.19.5.3 When wiring between panels the #10 AWG SIS panel

wire shall be connected from CT test switch to CT test switch or from the CT test switch directly to the device.

6.20 WIRE SIZING Current transformer secondary circuit leads shall be #10 American Wire

Gauge (AWG) wire or larger. Potential transformer secondary circuit leads shall be #12 AWG or larger. Power and control wiring shall be #14 AWG or larger. Use the wire sizes indicated above except when the Contractor identifies technical reasons for a larger wire size. Wire size shall be indicated on Wiring Diagram when not #14 AWG.

6.21 SWITCHBOARD WIRE & INSULATION Use stranded copper conductor wire, insulated with SIS cross-linked

polyethylene insulation rated 90 degrees C. The insulation class of all wiring shall be coordinated with the voltage conditions it may be expected to encounter, but shall in no case be less than 600 volts.

6.22 TERMINAL BLOCK AND CURRENT TEST SWITCH TERMINAL SIZE All terminals of terminal blocks and current test switches shall accept a

minimum of two compression ring-tongue type lugs for #10 AWG wire.

6.23 CABLE SPARE CONDUCTORS Spare conductors of a multiconductor cable shall be recorded in the

interconnection table. These spare cable conductors shall have sufficient length to terminate on any terminal block located on the side of the switchboard where the cable is located. The spare conductors shall be

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labeled spare and neatly tied down.

6.24 INTERCONNECTIONS BETWEEN SHIPPING SPLITS It is desirable that structures containing several sub panels (i.e. a control

panel line-up, metal-clad switchgear, a unit substation, a prefabricated control building, etc.) be shipped as a single shipping unit. In the case that the structure must be split for shipping, wires on both sides of the split shall terminate on terminal blocks. Interconnection wires crossing the shipping split shall be disconnected at one end and marked with the switchboard identification, terminal block and terminal from which they are disconnected. For shipping, neatly coil, secure, and store all these wires at the shipping split for installation in the completed structure.

6.25 EXTERIOR WIRE WAYS Interconnections between switchboards supplied on a common structure

and run on the exterior of that structure shall be installed in rigid steel or flexible metallic liquid-tight conduit.

6.26 INTERIOR WIRE WAYS Interconnections between switchboards supplied on a common structure

and run on the interior of that structure shall be by wires leaving terminal blocks and run in wireways that neatly train the interconnecting wires.

7 TEST REQUIREMENTS Factory tests described here are for acceptance of the switchboard wiring

supplied. These tests are to be conducted after construction of the switchboards and in the order listed. The initiation of these tests is a "Hold Point", per the General Conditions of this Bid Request. Other tests not described here are required for structure, system and component acceptance. The Contractor shall record all errors or failures found during the tests as well as the required corrective action with acknowledgement that the corrective action has been completed. The Contractor shall furnish a copy of these records to the District at the conclusion of the factory tests.

7.1 CONTINUITY TESTS & WIRE LABEL VERIFICATION 7.1.1 Visually verify terminal-by-terminal that all wire labels show the

remote connection point described in the latest approved wiring

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diagram. 7.1.2 Wire by wire, verify the electrical continuity from end to end.

Temporarily lift wires from terminals as required for positive verification.

7.2 DIELECTRIC TESTS 7.2.1 The Contractor shall conduct the following tests to verify that

switchboard wiring has an adequate insulation level to ground.

7.2.1.1 Disconnect ground connections and device terminals subject to damage at test voltage. Contacts shall be blocked closed as required to connect portions of the wiring otherwise not connected to the applied voltage. The test records shall record all disconnected terminals and contacts blocked closed.

7.2.1.2 When the circuits being tested involve expensive or long lead

time equipment apply this less destructive Megger dielectric test before applying the hi-pot dielectric test described in the following section. Measure dc insulation resistance while applying 2200 volts dc. One mega ohm resistance or greater is acceptable.

7.2.1.3 Using the same test procedure and setup described above

for measuring the dc insulation resistance, apply 1500 volts rms 60 Hz for one minute to all terminals entering the switchboard.

7.2.1.4 At the conclusion of the tests the Contractor shall restore all

connections and contacts and furnish Dielectric test records to the District.

7.2.2 Test District field modified AC current circuits as described in section

7.2.1.2, except that the applied voltage shall be 500 v dc instead of 2200 v dc.

7.3 FUNCTIONAL TESTS 7.3.1 Within three weeks following schematic/elementary approval, the

Contractor shall submit for approval a detailed function test proposal. This proposal shall detail a test plan specifically, by individual

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components, and organized as a checklist, so that it can be used to record each component's acceptance tests function by function.

7.3.2 Functional tests shall verify all functions including phase sequence,

directionality/polarity, disable functions, trip functions, and close functions.

7.3.3 Power circuit breaker operating sequence shall be included in all

functional tests of switchboards that control power circuit breakers. When the power circuit breaker is not part of the scope of equipment supply, a circuit breaker simulator shall be used to perform these tests. The District may supply the Contractor with a circuit breaker simulator for use in these tests or require the Contractor to supply power circuit breaker simulator(s) of an approved District design. The equipment’s technical specification will indicate when the Contractor is required to supply power circuit breaker simulator(s).

7.4 DISTRICT WITNESSED & CONDUCTED TESTS AT FACTORY 7.4.1 The Contractor shall notify the District four weeks before the above

tests are to be conducted, so that the District may arrange to have a representative present to witness these tests.

7.4.2 District personnel may conduct total or partial label verification,

continuity tests, and function tests in the Contractor's factory. These tests will be in addition to those required by the Contractor. The Contractor will facilitate these in-factory tests and correct any errors encountered.

7.5 TEST WIRING All temporary wiring installed in the factory for testing shall be removed prior

to shipping the equipment.

8 QUALITY ASSURANCE 8.1 All requirement(s) of this Engineering Specification with which the

Contractor cannot or will not comply shall be identified in the Bidding Schedule's Exception Section as an exception.

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8.2 The Contractor's quality control procedures shall include methods to verify and document compliance with all requirements of this Engineering Specification.

8.3 The QA documents shall be readily available to the District's

representatives for review during an audit or inspection of the Contractor's facility.

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CATEGORY: ADMINISTRATIVE

ENGINEERING SPECIFICATION

REV. 9 DATE: 02/02/2006

Subject:

Drawings and Technical Data

TABLE OF CONTENTS

1 PURPOSE..........................................................................................................................2

2 SCOPE...............................................................................................................................2

3 REFERENCES...................................................................................................................2

4 DEFINITIONS.....................................................................................................................2

5 GENERAL REQUIREMENTS ...........................................................................................2

6 SUBMITTAL REQUIREMENTS ........................................................................................3

7 TECHNICAL DATA REQUIREMENTS .............................................................................4

8 DRAWING REQUIREMENTS ...........................................................................................7

9 ATTACHMENTS ................................................................................................................9

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1. PURPOSE

Provide the requirements for drawings and technical data used in the District. 2. SCOPE

This specification applies to all drawings and technical data submitted to and used in the District. Technical data shall include instruction manuals, design calculations and test reports.

3. REFERENCES

3.1. Latest editions of American National Standards Institute (ANSI) drafting standards. 4. DEFINITIONS

None 5. GENERAL REQUIREMENTS

5.1. Drawings, technical data, and all correspondence shall be in the English language. Linear measurements shall be in feet and/or inches. Weights shall be in pounds. All angular dimensions shall be in degrees.

5.2. Electronic drawing submittals shall be compatible with AutoDesk Map, AutoCAD

2004, .DWG or .DXF file.

5.3. All submittals shall be in accordance with the requirements of the latest editions of American National Standards Institute (ANSI) drafting standards.

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6. SUBMITTAL REQUIREMENTS

6.1. Unless otherwise specified, each approval submittal shall include one (1) copy of the required technical data (i.e., equipment manuals) and two (2) full size electrostatic drawing copies, and a computer file on CD.

6.2. The final submittal shall include four (4) paper copies of technical data and one (1)

paper copy of each drawing. An electronic copy of the technical data on CD shall be provided in addition to the hard copies of the technical data. Drawings shall be submitted both as a computer file on CD per section 8.2 and a full-size paper print per section 8.

6.3. Each submittal shall include a transmittal letter with the contract number assigned by

the District, the name of the cognizant engineer, project title, and a list of the items in the submittal. Drawings listed in the transmittal letter shall include the document name, revision number and date revised.

6.4. Separate documentation and drawings shall be submitted for each piece of

equipment or functional system provided.

6.5. A copy of each transmittal letter shall be sent to the attention of the District's Contract Administrator in the Supply Chain Department.

6.6. All documentation shall be sent the attention of:

Sacramento Municipal Utility District Engineering Documentation Control, Mail Stop I105, 1708 59th Street Sacramento, California 95819-4628

6.7. Unless specified otherwise by the District’s cognizant engineer, within ten (10)

working days after receipt, the District will return one copy of each submittal marked with a review status. Each item requiring review will have an approval stamp, as shown below, marked with the review status. Approval of submittals does not relieve the Contractor from full compliance with the contract.

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SUBMITTAL REQUIREMENTS (Cont.)

Figure 1. Approval Stamp 7. TECHNICAL DATA REQUIREMENTS

7.1. Technical data such as instruction books, calculations, and test reports shall be bound and include a comprehensive index and separator tabs, identified by index items, separating major components and inserts. The following information shall appear on the front cover and preferably the back spine of each manual: Sacramento Municipal Utility District, the contract number assigned by the District, name/description of the equipment, the manufacturer's name and order number, the serial number of the equipment, and the SMUD installation location (if available). The required technical data, instruction manuals and drawings will be assembled together with one set of all other drawings supplied by the vendor under this contract reduced to size not larger than 11 inches by 17 inches, and be supplied in a loose leaf or bound format with a strong and serviceable cover. The assembled documents and drawings shall be clear and legible for normal reading without magnification.

7.2. All technical data such as calculations, catalog item descriptions, etc., needed for

checking submitted drawings shall be provided with each submittal.

7.3. Instruction books specifically covering equipment supplied by the vendor as a minimum shall contain the following:

TECHNICAL REVIEW.............................. APPROVED - Manufacturing may proceed. APPROVED EXCEPT AS NOTED - Make changes

Resubmit for approval. Manufacturing may proceed as approved.

NOT APPROVED - Correct and resubmit for approval DRAWING QUALITY REVIEW........................ APPROVED NOT APPROVED - Correct and resubmit for approval

DO NOT DELAY DESIGN/MANUFACTURING FINAL DRAWINGS................................. Submit in accordance with the Standard Drawing

Specifications. NOTE: Contract will not be considered complete until drawing approval is given for both technical content and drawing quality and final drawings are submitted to SMUD. Cognizant Engineer.........………………………..........

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7.3.1. Recommended methods for assembly and adjustment of all parts requiring assembly or adjustment, including bearings.

7.3.2. Recommendations on equipment storage (up to one year).

7.3.3. Recommendations on equipment installation, including special precautions

and sequences of work. Rigging and lifting details shall be included for all equipment.

7.3.4. Overall system diagram, process flow sheets and/or process and instrument

drawings.

7.3.5. Complete internal schematic diagrams showing each discrete component in symbolic form along with its connecting points. The schematic diagrams shall also include all test points along with their associated wave shapes and electrical quantities. The wave shapes and electrical quantities may be on sheets separate from but referenced by the schematics.

7.3.6. Wiring diagrams showing internal and external connections to all components

including printed circuit cards and their internal connections.

7.3.7. Physical layout drawings identifying all discrete devices and their internals, including printed circuit cards, valve and pump internals. Each part shall have an individual number.

7.3.8. Components that have a schematic/wiring print in their instruction manual

(typical) shall have a separate drawing submittal (electronic if available) included that is applicable to the part supplied. Examples are; circuit breaker internal wiring, battery charger, and relays that are not mostly microprocessor, etc.

7.3.9. Master bill of materials shall be provided when applicable identifying each

discrete component. The bill of material shall be keyed to the devices shown on the physical layout drawings.

7.3.9.1. The bill of materials shall include the manufacturer's model number, full

part number, and serial number (if applicable).

7.3.9.2. The bill of material shall identify each device by its industry standard designation and the original manufacturer's name and part number. The prime vendor may also include his identifying number for the part.

7.3.9.3. Serial numbers shall be included for major parts (LTC, large motors,

bushings, etc.) and electronic components (relays, temperature monitor, battery changer, etc.) that may be updated (software, firmware, etc.) by the original manufacturer, and for parts that have unique testing data or where the serial number may be required for a warranty issue.

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7.3.10. Detailed operating instructions.

7.3.11. Detailed theory of operation of all circuits and systems.

7.3.12. Recommended maintenance procedures including required test and

calibrating intervals. Include maintenance requirements for equipment placed in storage or not in service.

7.3.13. Test and calibration procedures for all devices including test equipment

connection drawings.

7.3.14. List of required test and calibration equipment.

7.3.15. Complete procedures for programming and troubleshooting the equipment and systems.

7.3.16. Programming software shall be included for settable microprocessor relays,

controllers, etc.

7.3.17. List of recommended spare parts by part number, description, cost and ordering information.

7.3.18. Manufacturer's instruction bulletins, drawings, and instruction manuals for all

transducers, relays, instruments, etc., supplied by manufacturers outside the vendor's own company. If the manufacturers' bulletins do not meet all of the above requirements, the vendor will supply appropriate drawings and instructions. Complete vendor instruction manuals shall be provided as applicable for all relays, controllers, etc. Instruction manuals shall include application, operation, programming and communication capabilities.

7.3.19. Two (2) instruction books shall be required not later than 14 days prior to

delivery of equipment. Concurrent with the receipt of equipment, two(2) additional instruction books and one (1) set of full size reproducible masters for all drawings depicting the "As Built" configuration shall be delivered.

7.3.20. Any future major modifications on the part of the vendor concerning the

equipment or systems covered by this contract shall be accompanied by updates to literature and drawings meeting all the above requirements.

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8. DRAWING REQUIREMENTS

8.1. Lettering 8.1.1. All lettering shall be upper case except where lowercase is used as an industry

standard.

8.1.2. Minimum lettering height shall be as shown in Table 1.

8.2. Drawing sizes, noted in Table 1, shall be the final plotted drawing size. 8.3. All drawings shall be submitted without errors of any type.

Drawing Size Paper Size Minimum Height

A Size 8 1/2" x 11" 0.100"

B Size 12” x 18” 0.100"

C Size 18” x 24” 0.100"

D Size 24” x 36” 0.100”

E Size 36” x 48” 0.100”

TABLE 1 Minimum Lettering Height

8.4. Computer Generated Drawings

8.4.1. All electronic drawing files shall be submitted to the District on compact disk CD.

8.4.2. The District will supply an electronic file (AutoCAD block) of the District’s

standard drawing format with title block and layers at contractors request.

8.4.3. Drawing border and title block shall be on the Border layer in accordance with Attachment 9.1.

8.4.4. All pen assignments in the drawing plot shall be in accordance with

Attachment 9.1.

8.4.5. All entity colors in the drawing shall be in accordance with Attachment 9.1.

8.4.6. All colors shall be by layer.

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8.4.7. All dimensions shall be associative and placed on the drawing in accordance with Attachment 9.1.

8.4.8. All drawing layers shall be in accordance with Attachment 9.1 for electrical

drawings and Attachment 9.2 for Civil/Mechanical drawings. 8.4.9. All symbols, devices, North Arrows, elevation/section cutting planes, etc. shall

be blocks and placed on the appropriate layer as specified in Attachment 9.1 and 9.2.

8.4.10. All drawing line types shall be in accordance with Attachment 9.3.

8.4.11. All line types shall be by layer.

8.4.12. All text styles shall be in accordance with Attachment 9.4.

8.4.13. All lines shall be defined by two end points. These end points shall meet

exactly.

8.4.14. Polylines shall be made up of connected vectors.

8.4.15. All arcs and circles shall have a center point and radius.

8.4.16. All points are to be "snapped" using a snap of 0.05.

8.4.17. All text shall be in drawing format. Vectorized text is not acceptable.

8.4.18. All text to the right of an associated object shall be left justified.

8.4.19. All text to the left of an associated object shall be right justified.

8.4.20. All text above or below an associated object shall be center justified.

8.4.21. All symbols shall be "snapped" to connecting lines.

8.4.22. Symbols may have one or more attributes.

8.4.23. Some symbol attributes may be visible and some may be invisible.

8.4.24. All drawing units shall be Architectural or Engineering as approved by the responsible District engineer.

8.4.25. All drawing plot files shall be in accordance with the HPGL format.

8.4.26. Non dimensioned drawings:

8.4.26.1. All non dimensioned drawings such as One Lines, Schematics, Wiring

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Diagrams and Schedules shall be drawn in model space.

8.4.26.2. All title blocks on non dimensioned drawings shall be in model space and shall be scaled full size (one to one) to the drawing paper size.

8.4.27. Dimensioned drawings:

8.4.27.1. All dimensioned drawings of physical equipment shall be drawn in model

space and be scaled full size (one to one) and be displayed in viewports in a title block drawn in paper space.

8.4.27.2. All title blocks on dimensioned drawings shall be in paper space and

shall be scaled full size (one to one) to the drawing paper size.

8.4.27.3. All physical equipment shall be displayed in viewports to a specific scale. The scale shall be specified on the drawing.

8.4.27.4. Each paper space drawing may display multiple viewports. Each view

port may be displayed at a different scale. The displayed scale should be identified on the drawing.

9. ATTACHMENTS

9.1. Standard Layers: ELECTRICAL 9.2. Standard Layers: CIVIL/MECHANICAL

9.3. Standard Line Types

9.4. Standard Font Styles

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ATTACHMENT 9.1

STANDARD LAYERS: ELECTRICAL

NAME COLOR PEN NO. LINE TYPE DESCRIPTION

EXT PRO

0 WHITE(7) 1 7 CONTINUOUS USED FOR THE CREATION OF BLOCKS. IT IS NOT USED FOR REGULAR ENTITITES

BORDER MAGENTA(6) 4 4 CONTINUOUS DRAWING BORDER.

CONNEC GREEN(3) 3 7 CONTINUOUS ALL INTERNAL WIRING CONNECTION LINES BETWEEN DEVICES.

DEVICE CYAN(4) 3 7 CONTINUOUS ELECTRICAL DEVICES.

DASHED WHITE(7) 1 7 DASHED MECHANICAL LINKAGE.

DIM WHITE(7) 1 7 CONTINUOUS ALL DIMENSIONS.

HIDDEN WHITE 1 7 HIDDEN MULTI-CONDUCTOR FIELD CABLES.

PHANTOM WHITE 1 7 PHANTOM DEFINE EQUIPMENT SECTIONS.

REVISION MAGENTA(6) 4 4 CONTINUOUS IDENTIFY ADD CLOUDS AND DELETIONS.

TEXT YELLOW 3 7 CONTINUOUS ALL DRAWING TEXT, EXCEPT DIMENSIONS.

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ATTACHMENT 9.2

STANDARD LAYERS: CIVIL / MECHANICAL

NAME COLOR PEN NO. LINE TYPE DESCRIPTION

EXT PRO

0 WHITE(7) 1 7 CONTINUOUS USED FOR CREATION OF BLOCKS. NOT USED FOR REGULAR ENTITITES.

BLDG YELLOW(2) 3 7 CONTINUOUS OUTLINE OF BUILDINGS

BORDER MAGENTA(6) 4 4 CONTINUOUS DRAWING BORDER

CENTER WHITE(7) 1 7 CENTER CENTER LINE OF AN ENTITY

CONCRETE RED(1) 3 3 CONTINUOUS FOOTINGS, SLABS

CONDUIT CYAN(4) 3 7 CONTINUOUS CONDUIT

CONTOUR 8 3 7 CONTINUOUS CONTOUR LINES

DIM WHITE(7) 3 7 CONTINUOUS DIMENSIONS & LEADERS

EASEMENT WHITE(7) 3 7 CONTINUOUS R.O.W.’s, P.U.E.’S, SETBACKS

EQUIPMENT YELLOW(2) 3 7 CONTINUOUS EQUIPMENT

FENCE YELLOW(2) 3 7 CONTINUOUS FENCE & GATE

GNDING GREEN(3) 3 7 *DASH3 GROUNDING

HATCH WHITE(7) 1 7 CONTINUOUS HATCH PATTERNS

LANDSCP WHITE(7) 3 7 CONTINUOUS LANDSCAPE ENTITIES

MASONRY MAGENTA(6) 4 4 CONTINUOUS MASONRY WALLS

OVERLAY 8 N/A ATTACHED IMAGE

PIPING BLUE(5) 3 7 CONTINUOUS DRAINS & DRAIN INLETS

POLES BLUE(5) 3 7 CONTINUOUS UTILITY POLES

PRLINE MAGENTA(6) 4 4 *PRL PROPERTY LINES

PULLBOX RED(1) 3 3 CONTINUOUS PULL BOXES & CUBICLES

REBAR GREEN(3) 3 7 CONTINUOUS REBAR

ROAD BLUE(5) 3 3 CONTINUOUS ROADS, SIDEWALKS, CURBS

SCREENED 252 ANY SCREENED ENTITIES

STEEL MAGENTA(6) 4 4 CONTINUOUS STEEL STRUCTURES

TEXT YELLOW(2) 3 7 CONTINUOUS TEXT

TREADPLATE CYAN(4) 3 7 CONTINUOUS TREAD PLATES

UTILITY WHITE(7) 1 7 HIDDEN SEWER, WATER, IRRIGATION, FIBER, TELEPHONE, FLOW LINE, RR

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ATTACHMENT 9.3

STANDARD LINE TYPES

___________________ CONTINUOUS ____ _ ____ _ ____ _ CENTER __ __ __ __ __ __ __ DASHED _____ _____ _____ DASH3 _ _ _ _ _ _ _ _ _ _ HIDDEN ____ _ _ ____ _ _ PHANTOM ___ ___ ___ ___ ___ DASH2

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ATTACHMENT 9.4

STANDARD STYLES

NAME FONT ANGLE DESCRIPTION

STANDARD TXT 0° STYLE STANDARD IS AUTOCAD'S START-UP STYLE. IT IS NOT TO BE USED FOR STANDARD TEXT

T1 ROMANS 0° STYLE T1 TO BE USED FOAR ALL STANDARD TEXT.

T2 ROMAND 0° STYLE T2 TO BE USED WHEN TEXT SHOULD BE BOLDER THAN STANDARD TEXT.

T3 ROMANS 20° STYLE T3 TO BE USED WHEN A 20° ANGLE IS DESIRED FOR STANDARD TEXT.

T4 ARIAL BLACK 0° STYLE T4 TO BE USED FOR VERY BOLD TEXT.


No. S001

CATEGORY: SERVICES

REV. 1 DATE: 9/25/93

SUBJECT:

FIELD ENGINEERING SERVICES REQUIREMENTS

0 Original Issue 2/1/93 1 Corrected typos: REQUIREMENTS was REQUIRMENTS (heading page 1 & 2)

, the field engineer was he (3rd paragraph 2nd sentence of section 2 SCOPE)

job site was jobsite. 9/25/93

Paul Lau (Signed Original) 9/28/93 John McColligan(Signed Original)12/15/93

STANDARDS ENGINEER DATE SUPERVISOR DISTRIBUTION DESIGN DATE

DePaul (Signed Original) 9/30/93 Val Lewis (Signed Original) 10/4/93

SUPERVISOR ELECTRICAL DESIGN DATE SUPERVISOR CIVIL & MECH. DESIGN DATE

F Sheehan (Signed Original) 12/15/93

SUPERVISOR ENGINEERING DESIGN DATE Page i of i


No. S001

CATEGORY: SERVICES

REV. 1 DATE: 9/25/93

SUBJECT:

FIELD ENGINEERING SERVICES REQUIREMENTS

TABLE OF CONTENTS 1 PURPOSE................................................................................................................. 2 2 SCOPE...................................................................................................................... 2 3 REFERENCES ......................................................................................................... 2 4 DEFINITIONS ........................................................................................................... 3 5 SERVICE REQUIREMENTS.................................................................................... 3 5.1 PROVISION OF TOOLS.................................................................... 3 5.2 INSTRUCTION OF DISTRICT PERSONNEL................................... 3 5.3 ENGLISH LANGUAGE ..................................................................... 3 5.4 SAFETY ............................................................................................. 3 5.5 SCHEDULING.................................................................................... 3 5.6 SATISFACTORY PERSONNEL ............................................ 4 5.7 EMPLOYEES OF THE CONTRACTOR ........................................... 4 5.8 COMPENSATION.............................................................................. 5

Page 1 of 6


No. S001

CATEGORY: SERVICES

REV. 1 DATE: 9/25/93

1 PURPOSE This specification provides the terms and requirements for providing field

engineering services to direct the installation and start-up of equipment. The technical specification specifying the equipment supply will specify that the Contractor provides for the District to activate the option of these field engineering services by referencing this District Field Engineering Service Requirements specification S001. Typically equipment supplies purchased by the District where the option for field engineering services have been utilized include: power transformers, power circuit breakers, air disconnect switches, etc.

Prices for field engineering services shall be shown as separate bid item(s) where

indicated in the Bidding Schedule. Such services shall be bid in accordance with this District Field Engineering Service Requirements specification S001.

2 SCOPE This specifies services, terms and conditions of a qualified and competent field

engineer. The field engineer shall supervise and be responsible for the technical direction of erecting the equipment, as well the starting and operation of the apparatus.

Specific additional field engineering service requirements may be defined in the

equipment supply Technical Specification for the specific equipment purchased. In case of conflict between the field engineering service requirements specified in this District Field Engineering Service Requirements specification S001 and those specified in the equipment supply Technical Specification the equipment supply Technical Specification shall govern.

The field engineer shall not assume executive charge of work associated with the

erection, start-up, and operation of equipment. However, the field engineer shall provide technical direction to the District personnel performing this work. By following these directions the District shall be relieved from claims by the Contractor that equipment failure is due to improper work during the presence of the Contractor's field engineer.

3 REFERENCES NONE 4 DEFINITIONS

Page 2 of 6


No. S001

CATEGORY: SERVICES

REV. 1 DATE: 9/25/93

FIELD ENGINEER - A person knowledgeable, trained, and experienced in the

erection, installation and start-up of the equipment supplied by the Contractor, and qualified to technically direct others to erect, install, and start that equipment.

5 SERVICE REQUIREMENTS

5.1 PROVISION OF TOOLS The services of this specification shall include the provision and use at the

job site of any special tools that may be required by the field engineer for the proper performance of the work.

5.2 INSTRUCTION OF DISTRICT PERSONNEL

Services of the field engineer shall include expert instruction of the District's

personnel in operation, maintenance, and adjustment of the equipment. 5.3 ENGLISH LANGUAGE The field engineer shall clearly communicate in the English language. 5.4 SAFETY The field engineer shall comply with all accident prevention procedures for

the control and safety of District personnel and the construction contractor's personnel, property, equipment, and persons visiting the job site.

5.5 SCHEDULING 5.5.1 By the District: 5.5.1.1 The District will provide the Contractor notice to provide a field

engineer, at least 14 days in advance, of its requirement for the field engineer to report at the job site. The field engineer shall report on the District designated day to the District's designated foreman at the designated job site.

5.5.1.2 In the event delays occur during assembly erection, or

start-up, in which case the services of the field engineer

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No. S001

CATEGORY: SERVICES

REV. 1 DATE: 9/25/93

are not required, the District may direct the field engineer to return to their home station or remain at the site of the work as stand-by, non-working time, whichever is deemed to be in the best interest of the District.

5.5.2 Hours of Service: Hours of service shall normally be from eight (8) hours to ten (10)

hours per day between 7:00 a.m. and 7:00 p.m., any day of the year, as directed by the District (including Sundays and United States national and other holidays). The field engineers' hours shall correspond to the crew assigned to work on this equipment at the job site. The District crews work a flexible schedule. Generally hours are assigned over two weeks period and are within Monday through Friday and include between eight (8) and ten (10) hours per day.

The Bidder's field engineer price bid in the Bidding Schedule shall be

per day of service. It shall be based on an average eight (8) -hour District workdays. District workdays are Monday through Friday including United States national and other holidays. If the District schedules work on a flexible schedule basis as described in this section, the daily rate shall be prorated on an hourly basis to apply to such a flexible schedule. Overtime rates shall not be paid unless assigned work hours exceed ten (10) per day or eighty (80) hours in a two-week period.

5.6 SATISFACTORY PERSONNEL Service personnel shall be satisfactory to the District and shall be replaced if

not satisfactory to the District. Service personnel shall be experienced on the equipment or material being installed or placed into service.

5.7 EMPLOYEES OF THE CONTRACTOR The field engineer assigned to the Contract shall be considered an employee

of the Contractor. Contractor agrees to indemnify and hold the District and its agents harmless from and against all loss, damage, and expense occasioned by any negligent or willful act or omission of said field engineer or any other employee of the Contractor.

5.8 COMPENSATION

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No. S001

CATEGORY: SERVICES

REV. 1 DATE: 9/25/93

5.8.1 Daily Rates: For the services of the field engineer, on any day in which they are

engaged on-site or on any day when held over (stand-by, non-working day) at the site by the District, the Contractor will be paid respectively the work day or stand-by day amounts per calendar day as shown in the Bidding Schedule. The Contractor will not be paid for time spent in travel to and from the job site, for daily commuting expense, or subsistence or other personal expense except as is included in the daily rate bid in the Bidding Schedule.

When the engineer is assigned to work an average of forty (40) hours

per week, Saturdays and Sundays only may be considered stand-by, non-working day(s) in which the District holds over the field engineer at the site.

5.8.2 Estimated amount of services: The period of time given in the Bidding Schedule is only for estimating

purposes; the periods of time the services will be required may be greater or less.

5.8.3 Travel Expense: The Contractor will not be paid for the time spent in travel to and from

the job site. Besides the daily rate bid in the Bidding Schedule, the Contractor will be paid for travel expense as follows:

If the headquarters/service facility of the field engineer performing the

services as established above is not within the county in which the job site is located, the District will pay such engineer's transportation cost from such headquarters/service facility to the job site and return. If, however, such engineer is at a point other than established headquarters/service facility at the time services are required, the District will pay such engineer's transportation cost from such point to the job site and return, provided the amount is equal to or less than one round trip from the established headquarters/service facility. The District will pay the lesser of the foregoing amounts, not to exceed the amount stated in the Bidding Schedule for transportation cost. NOTE: Transportation to and from the job site while employed on the job will not be paid by the District.

Page 5 of 6


No. S001

CATEGORY: SERVICES

REV. 1 DATE: 9/25/93

"Transportation Cost" as used above, shall be limited to air coach fare, by direct route, or an amount equivalent to such air coach fare if travel is by other means of transportation. The amount of such "Transportation Cost" shall be invoiced by the Contractor and paid by the District as substantiated by a copy of the field engineer's actual air fare ticket.

Page 6 of 6

TECHNICAL PROCEDURE

No. SP1401 Page 1 of 18

REV 1 DATE: 05/10

CATEGORY


SUBJECT

POWER TRANSFORMER RECEIPT AND ACCEPTANCE

TABLE OF CONTENTS

1.PURPOSE 2

2. SCOPE 2

3. REFERENCES 2

4. DEFINITIONS 3

5. RECEIVING INSTRUCTIONS 3

6. RECEIPT INSPECTION 4

7. OFF-LOADING 5

8. IMMEDIATE PREPARATION AFTER OFF-LOADING 6

9. PREPARATION FOR ACCEPTANCE TESTING 7

10. ACCEPTANCE TESTING 8

11. STORAGE 10

12. RECORD KEEPING 11

13. ATTACHMENTS 12

14. TRANSFORMER RECEIVING INSPECTION REPORT 13

15. TRANSFORMER DRESS & TEST INSPECTION REPORT 14

16. TRANSFORMER RECEIPT AND ACCEPTANCE FLOW CHART 17

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1. PURPOSE

1.1 This document defines the receiving, inspection, testing, and storage procedures for new or repaired substation class power transformers delivered to the District.

1.2 It also defines the required timeframes for the receiving inspection and acceptance testing to ensure that material meets the District’s specifications and is acceptable for service. If problems are found, then delivery or warranty claims may be made to the manufacturer and repairs made on a timely basis.

1.3 The procedures for storage of the transformers ensure that the warranties remain enforceable for the maximum possible duration of the warranty. The records generated by the inspections, monitoring, and testing are required documents to ensure the warranty can be enforced, if problems are found.

1.4 The objectives of this procedure include:

1.4.1 Ensuring transformer is delivered with all parts.

1.4.2 Verifying that the transformer is usable and meets specifications.

1.4.3 Defining and establishing timeframes for performing the required testing.

1.4.4 Making warranty or shipping damage claims to the manufacturer and having repairs made on a timely basis, if needed.

1.4.5 Storing transformer properly to ensure usability when needed.

1.4.6 Maintaining transformer warranty for maximum period.

2. SCOPE

This procedure applies to all power transformers from the time of their arrival on District property.

3. REFERENCES

3.1 Transformer Purchase Specifications

3.2 Transformer Instruction Manual

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3.3 Transformer Final Drawings

4. DEFINITIONS

4.1 Receiving Inspection – the initial inspection of the transformer and accessories before they are removed from the delivery vehicle.

4.2 TASA – Tapchanger Activity Signature Analysis oil test.

4.3 TCA – Transformer Condition Assessment oil test.

5. RECEIVING INSTRUCTIONS

5.1 The Substation Design Engineer should obtain a copy of the transformer instruction manual or a copy of the manufacturer’s shipment, receiving, and storage instructions prior to the shipment of the transformer.

5.2 It is important that off-loading, dress out, and short and long term storage instructions, as furnished by the manufacturer, shall be strictly followed to maintain the validity of the manufacturer’s warranty. In case of discrepancy or ambiguity between the manufacturer’s instructions and the following procedure, contact the Substation Design Engineer. The intent is to follow the more stringent instructions between the manufacturer and this procedure.

5.3 It is important to note that the District does not take ownership of the transformer or make payment for it until AFTER the transformer is delivered and the final acceptance inspection and testing has been performed. The District has the right to reject non-conforming goods and the right to other remedies, including repairs by the manufacturer, before final acceptance and payment for the transformer is made.

5.4 Key timeframes:

5.4.1 To minimize the time delay between delivery and discovery of problems with the transformer or the accessory equipment, receiving inspections must be made the day of delivery.

5.4.2 Inspections and inventory of the crated accessories must be made within one week of the delivery.

5.4.3 Acceptance testing of the transformer and accessory equipment must be performed in accordance with the contract, but within 30 calendar days after delivery if not otherwise specified.

5.5 The Substation Design Engineer should provide a copy of the transformer instruction manual or a copy of the manufacturer’s shipment, receiving, and

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storage instructions to the substation maintenance representative who will be receiving the transformer. This information should include the maximum acceptable transportation G levels for the impact recorder, and the maximum tilting angle for the transformer. The Substation Design Engineer should also provide a copy of the Manufacturer’s Receiving Inspection Checklist, if available. The Substation Design Engineer should provide the Manufacturer’s Installation Checklist to the crew dressing and testing the transformer. If the manufacturer’s checklists are not available, the checklists included as attachments to this procedure shall be used.

6. RECEIVING INSPECTION

6.1 In order to assure the District that the transformers have been transported and delivered without damage, a receiving inspection must be made, prior to off-loading, upon delivery of the transformer and the transformer accessories. The receiving inspection is intended to ensure all parts have arrived and that they are undamaged. If any discrepancies or problems are found, immediately notify the Substation Design Engineer.

6.2 Visual inspection - Completely walk around the transformer when it is uncovered on the truck. Look for any damage or indications of damage, such as broken seals on boxes, dents in the equipment, oil leakage, scraped paint, broken cribbing, or broken crates.

6.3 Impact Recorder - Prior to unloading the transformer, inspect and record the maximum G level recorded on each axis of each recorder, if visible. This should be done by SMUD in cooperation with the manufacturer’s representative, if present. If the recorder uses magnetic or paper tape, leave the recorder in place. The impact recorder is not to be removed from the transformer until the transformer has been off-loaded from the delivery truck. Send the recorded values to the Electrical Test and Repair Specialist. If the responsible substation maintenance representative at the job site determines that the values are excessive, he will note it on the carrier’s Bill of Lading/ receipt and notify the Substation Design Engineer of the possible damage for communication to Supply Chain and the Manufacturer and Drayage Company.

6.4 Check gas pressure - Observe the gas pressure gauge and record the pressure reading of the gauge on the Transformer Receiving Inspection Report. If the pressure is zero or negative, or if there is no gas pressure gauge installed, notify the Substation Design Engineer. The Substation Design Engineer will notify the manufacturer and Supply Chain of the problem.

6.5 Check oil levels – If the transformer was shipped full of oil, verify the level of the oil in the main and LTC tanks by checking the oil level and the temperature gauges. Record the levels and temperature on the Transformer Receiving

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Inspection Report. If the oil level is below that expected for the oil temperature, notify the Substation Design Engineer of the discrepancy.

6.6 If the transformer is delivered without oil, or if there is a gas space above the oil, perform Dew Point test on the transformer. The measured value upon receipt should be equal or less than the measured value at the factory before shipment. Contact the Substation Design Engineer to verify if the value is acceptable.

6.7 Megger for core ground –Check the insulation resistance between the core and the frame by disconnecting the core ground connection and applying a 500 volt megger between the core ground strap and the ground connection. Contact the Substation Design Engineer if the core ground megger reading is low or zero. The manufacturer’s instruction shall indicate the minimum acceptable value of core ground when measured by megger of specified voltage class.

6.8 Bill of Lading - The delivery driver must present the Bill of Lading to the District substation maintenance representative who will accept the delivery. Inspect the Bill of Lading to ensure the delivery is proper, what is being delivered, and that the quantities being delivered are the amounts specified in the Bill of Lading. If there are discrepancies between the quantities in the delivery and the Bill of Lading, notify the Substation Design Engineer immediately, and do not sign the receipt until directed to do so. Before signing the receipt, note on it any discrepancies in delivery quantities, shipping damage, or evidence of potential shipping damage. Compare the Bill of Lading with the Master Bill of Materials supplied by the manufacturer - note if items on the Master Bill of Materials are backordered and that the delivered items are those specified on the Master Bill of Materials.

6.9 Count of boxes - Compare the number of boxes to that specified in the Bill of Lading. If the boxes are itemized on the Bill of Lading, compare the boxes to those listed. Label and mark the boxes with the transformer serial number if not already on the box.

6.10 Notify the Substation Design Engineer of any problems or discrepancies for him to communicate to manufacturer and to notify Supply Chain. If there is any question about whether to off-load the transformer, obtain the Substation Design Engineer’s approval before off-loading.

7. OFF-LOADING

7.1 The drayage company is responsible for off-loading the transformer. The Substation Design Engineer should provide a copy of the transformer manual or the manufacturer’s shipment, receiving and storage instructions to the drayage company lead.

7.2 Determine how the drayage company is planning to off-load the transformer from the truck and note if the contractor follows the transformer manufacturer’s

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instructions for the selected method of removal – jacking or crane, spreader bars, etc. In order to minimize the possibility of damaging the transformer, if the drayage company does not appear to be following the off-loading instructions, stop the work, ask them to review the manufacturer’s off-loading instructions, and immediately notify the Substation Design Engineer.

7.3 Notify the Substation Design Engineer if the maximum tilting angle is exceeded. The Substation Design Engineer will notify the manufacturer and drayage company and Supply Chain of the problem.

7.4 When the transformer is placed on the foundation pad, verify that the pad supports the entire base of the transformer. If the transformer cannot be repositioned to be fully supported by the pad, consult the responsible Civil Engineer or Design Engineer and place cribbing material to ensure the transformer is fully supported.

7.5 After placing the transformer, inspect and record the maximum G level recorded on each axis of each impact recorder if there is visible indication. This should be done by SMUD in cooperation with the manufacturer’s representative, if present. If the recorder uses magnetic or paper tape, mark the date and time. Turn off and remove the recorder(s), and give them with the tape(s) to the Electrical Test and Repair Specialist for record keeping and distribution to Maintenance Engineering. If the values registered on the impact recorders are abnormal, the Substation Design Engineer must be notified. The Substation Design Engineer will then confer with the manufacturer to alert them of possible damage, and notify Supply Chain.

8. IMMEDIATE PREPARATION AFTER OFF-LOADING

8.1 Follow the manufacturer’s recommendations for temporary storage if they are more stringent than the following instructions. If no recommendations are made by the manufacturer, then follow the steps below. These steps should be completed on the day of delivery.

8.2 Connect the transformer neutral bushing and tank ground lug to the station ground.

8.3 Check that the required valves, plugs, breathers, and relief valves are installed. Utilize the transformer outline drawing, if available, to locate the parts, valves, gauges, etc.

8.4 Verify that the transformer has a nitrogen pressure regulator/ bleeder system installed. If no nitrogen system is installed on the transformer, contact the Substation Design Engineer immediately.

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8.5 Verify operation of the nitrogen pressure relief system by slowly bringing the nitrogen pressure up to the value specified on the relief device nameplate or transformer nameplate and then slightly above. The pressure relief device should open and reduce the pressure to below the operating value. If the device does not operate, replace it with one of similar specified characteristics and repeat the test. If the device operates correctly, reduce the nitrogen pressure to the value specified by the transformer manufacturer; or, if no pressure specified, set at 0.25 positive pressure.

8.6 Connect station power to energize the transformer control cabinet heater, to reduce the possibility of condensation in the cabinet.

8.7 Place the high voltage bushings in the proper vertical storage position and ensure the bushings cannot topple over.

8.8 Take readings of the ambient air temperature, transformer tank and cylinder pressure and the oil temperature, along with the respective date and time of the reading. These readings must be repeated and logged for two weeks at intervals determined by Substation Maintenance. The readings should be made at approximately the same time each day. If the pressure readings are consistent after two weeks, the readings may be reduced to monthly. Keep the log of the readings in the control cabinet and bring copies of the log to the Substation Maintenance Department.

9. PREPARATION FOR ACCEPTANCE TESTING

9.1 A detailed parts inventory must be completed after receipt of the transformer and accessory equipment.

9.2 Perform the detailed inventory by comparison of the delivered items with the packing lists and Master Bill of Material. Open the crates that the materials are delivered in, and store the uncrated material in a C-Van or other secure storage. Mark the C-Van with the serial number of the associated transformer.

9.3 If transformer was shipped full of oil, take oil samples and perform TCA and TASA tests before opening or dressing the transformer.

9.4 If the transformer nameplate, oil tanker and/or oil containers are not labeled as certified non-PCB (less than 1 ppm), take oil samples and have them tested for Polychlorinated Biphenyls (PCBs).

9.5 Remove any shipping bracing – mark where the bracing was attached before removal.

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9.6 When preparing to dress out the transformer, purge tank with dry air after opening hatch if entry will be required.

9.7 Prior to dressing the transformer with the bushings, perform a detailed inspection of the interior of the transformer, including the tank bottom, with borescope to ensure that all the internal parts were not displaced during transport or unloading. Give special attention to the tap changer and its leads, the current transformers, etc.

9.8 Bushing Installation - Install the bushings and close the access hatch.

9.9 The radiators, surge arrestors, and fuses need not be assembled or attached for the acceptance testing if the transformer is being placed into storage.

9.10 If the transformer was shipped full of oil and no make-up oil is required, skip to step 9.14. If the transformer was shipped without oil, or if make-up oil was shipped with the transformer, perform the following steps on the oil prior to putting it into the transformer. These steps are intended to minimize the possibility of contaminating the transformer with bad oil.

9.11 Oil Delivered in tanker truck – Test the Dielectric strength of the oil (at least 30 kV Per ASTM D877) before filling the transformer. This oil will be processed as the transformer is filled.

9.12 Make-up Oil Delivered in Containers (not tanker truck) – Perform TCA test on the oil before adding it to the transformer.

9.13 Oil Filling - If the transformer is not already filled with oil, fill the transformer with oil per the manufacturer’s instructions.

9.14 Prepare the transformer for testing per the manufacturer’s instructions.

10. ACCEPTANCE TESTING

10.1 This testing must be performed within the schedule identified in Section 5.4.3. If any problems are found, immediately notify the Substation Design Engineer. Send copies of all test results to the Substation Design Engineer, Substation Maintenance, and Maintenance Engineering.

10.2 The acceptance testing is to ensure that the equipment meets the minimum requirements of the specification, and that no hidden damage occurred during shipment.

10.3 The acceptance testing will be done with the transformer dressed out with the high and low voltage bushings.

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10.4 Nitrogen pressure – Verify and record the transformer nitrogen pressure.

10.5 Oil temperature – Verify and record the ambient air temperature, transformer oil temperature and oil level(s).

10.6 Oil Test – Take oil samples from the transformer and perform a TCA test on the main tank and a TASA test on the LTC.

10.7 Oil Test – Take a Dissolved Gas Analysis (DGA) oil sample and have the sample tested. The results should be compared with the factory DGA as baseline data and future trending. The Substation Design Engineer should be contacted for acceptance of the oil. If the Substation Design Engineer determines there is a significant difference between the oil tests, a second DGA oil test will be taken and the Substation Design Engineer will notify the Manufacturer and Supply Chain of the possible problem .

10.8 Insulation Power Factor (DOBLE)– Perform Overall, Bushing C1, Bushing C2, Bushing Hot Collar (as applicable), Oil Sample, and Excitation DOBLE tests. The Excitation test must be first performed on all five No-Load tap positions with the LTC on Neutral and again with the No-Load tap in the middle position and test LTC taps from 16L through Neutral and 1R. If any discrepancy is found, test LTC taps 2R through 16R.

10.9 Ratio (TTR) – Compare the ratios for all steps and that the ratios match the nameplate within the IEEE tolerance.

10.10 Winding Resistance (Micro-ohm) – Check the resistance of all windings with primary winding in each tap position. Compare the winding resistance values with those on the transformer test report. The winding resistance should be within 1% of the factory test, when temperature corrected

10.11 Insulation Resistance (Megger)– Check that the insulation value, Hi to Low & Ground and Low to Hi & Ground, meet or exceed the specified values for the voltage class.

10.12 Polarization Index – Check that the values meet or exceed the specified values for the voltage class. Perform PI tests for, Hi to Low & Ground and Low to Hi & Ground

10.13 Sweep Frequency Response Analysis (SFRA) – Perform SFRA test for field baseline and comparison with factory test.

10.14 If Current Transformers are installed in the transformer or bushings – Perform the Primary ratio and polarity tests, the CT saturation test, and megger the CTs.

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10.15 If Potential Transformers and/or station power transformers are installed on the transformer – Perform the TTR test and Megger the PT and/or the station power transformer.

10.16 If temperature devices are installed on the transformer, test the operation of the devices.

10.17 Test the operation of the LTC control relay and back up LTC Control.

10.18 DGA Oil Test – Take DGA oil samples after the completion of the testing and compare to the pre-test oil tests.

10.19 DOBLE the Surge Arrestors

10.20 Megger the Surge Arrestors

10.21 If any abnormalities are found during any of the tests, immediately notify the Substation Design Engineer.

11. STORAGE

11.1 Once the transformer has successfully completed the acceptance testing, the transformer will be prepared for storage based upon the expected storage duration. If the duration is unknown, then the transformer will be prepared for long term storage.

11.2 If the transformer is located at the location where it is to be placed into service, do not re-install the shipping bracing. If the transformer must be relocated to a different substation for use, reinstall the shipping bracing, if any. Record in the transformer records kept with the transformer (in the control cabinet) that the bracing was reinstalled and the location(s) of the bracing.

11.3 If the bracing installation requires draining the transformer, the transformer may be stored without oil and pressurized with dry air

11.4 Depending on the transformer and bushing height, the bushings may be left on the transformer or may be removed to facilitate transporting the transformer to its final location when removed from storage.

or nitrogen only if storage duration is short term (less than 90 days). If storage duration may be long term, vacuum fill with oil.

11.5 Connect temporary shorting and grounding wires to all bushing terminals, if bushings are installed on transformer.

11.6 If the bushings have been removed, or the transformer oil was drained, perform a pressure test to ensure that the blind flanges are not leaking.

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11.7 Once the tank is verified sealed, install a system to maintain a positive nitrogen pressure on the tank to prevent breathing, if a leak should occur. The positive pressure nitrogen system is required for storage with, or without, oil filling. Perform a Dew Point test and record the result to verify that moisture has not entered tank during dressing and preparation for storage. (This step is not applicable for conservator-type transformers when oil filled and conservator is installed.)

11.8 If the bushings are removed, replace them in the transportation crates and ensure the bushings are upright, or at an angle greater than or equal to the minimum angle specified by the manufacturer. If the bushings are not removed, install protective covers over the bushings to minimize the risk of damage to the bushings.

11.9 Follow all the manufacturer’s instructions for storage.

11.10 Take readings of the ambient air temperature, transformer tank and cylinder pressure and the oil temperature, along with the respective date and time of the reading. These readings must be repeated and logged for two weeks at intervals determined by Substation Maintenance. The readings should be made at approximately the same time each day. If the pressure readings are consistent after two weeks, the readings may be reduced to monthly. Keep the log of the readings in the control cabinet and bring copies of the log to the Substation Maintenance Department.

11.11 If storage is short-term (less than 90 days) and the transformer is not oil filled, post a laminated sign on the transformer indicating that the transformer is in short term storage. The sign shall include the date the transformer was placed in short term storage and a statement the transformer must be vacuum oil filled by a date 90 days from the date it was placed in storage. The sign must be visible on the side of the transformer.

11.12 If storage is long-term as a spare, the Substation Design Engineer shall assign a spare location (Z) code, and label and store the transformer drawings and manuals for future use through the DCN procedure.

12. RECORD KEEPING

12.1 Record all of the information on the transformer nameplate(s); all bushing nameplates; and accessory equipment nameplates, including, but not limited to, surge arrestors, pumps, motors, valves, fans, pressure relief valves, pressure regulators, counters, relays, and fuses.

12.2 Send copies of the equipment nameplate information, and the transformer pressure readings, to the following:

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12.2.1 Supervisor, Substation Design & Construction

12.2.2 Supervisor, Substation Maintenance

12.2.3 Maintenance Engineer

12.2.4 Project Substation Design Engineer

13. ATTACHMENTS

13.1 Transformer Receiving Inspection Report, Section 14.

13.2 Transformer Dress & Test Inspection Report, Section 15.

13.3 Transformer Receipt and Acceptance Flow Chart, Section 16.

14. TRANSFORMER RECEIVING INSPECTION REPORT

Transformer identification_______________________________ Serial #_______________ Manufacturer___________________ MVA______________ Voltages_________________ Location____________________________ Date______________ Time_______________ BEFORE UNLOADING FROM TRUCK OR RAIL CAR: Inspect for visual damage, scrapes, oil leaks, etc. ___________________________________________________________________________________________________________________________________________________________________________________________________________________________ Max. recorded G levels from impact recorder X__________ Y__________ Z__________ Record as found gas pressure (+ or -). ___________________________________ Record as found oil temperature, degrees C. ___________________________________ Record as found oil levels, if shipped with oil – Main Tank _________________________ LTC – If equipped _________________________ Record Dew Point. ____________________________________ Megger Core(s) to Ground ____________________________________ Gas Cylinder / Regulator installed? �Yes �No Bill of Lading verified? �Yes �No AFTER UNLOADING: Record gas pressure as left (+ or -). _______________________________________ Record Oxygen in tank gas _____________________________________% Connect and energize space heater power. �Done Connect tank and neutral grounds. �Done Impact recorders read and removed? �Yes �No Gas Cylinder / Regulator installed? �Yes �No Logbook placed in control cabinet? �Yes �No List any separate accessories, and storage location if not with transformer. (bushings, radiators, support brackets, etc.) ___________________________________________________________________________________________________________________________________________________________________________________________________________________________ PLEASE FORWARD A COPY OF THIS REPORT TO THE SUBSTATION DESIGN ENGINEER IMMEDIATELY. Inspected by: _________________________________ Date: _______________________

15. TRANSFORMER DRESS & TEST INSPECTION REPORT

Transformer identification________________________ Serial #_____________ Manufacturer__________________ MVA____________ Voltages____________ Location______________________ Date____________ Time_______________ 1. If the transformer was shipped with nitrogen, evacuate the tank to remove the

nitrogen and break the vacuum with dry air to obtain at least 19.5 % oxygen content. Relieve any covers or fittings. Was this done?

Yes _____ No______ Remarks ___________________________________

2. Before entering the transformer, verify that the environment’s relative humidity is

below 60%? Record the relative humidity below.

Yes _____ No______ Remarks ___________________________________

3. Bushing leads on some units are secured for shipment to the blind flange covering the bushing opening. Before removing any bushing blind flange, determine where the bushing lead is tied and disconnect it from the shipping support. Was this done?

Yes _____ No______ Remarks ___________________________________

4. Dry air should be admitted to the main transformer tank to maintain the oxygen

content to at least 19.5% and to have a slight positive pressure on the tank. Was this done?

Yes _____ No______ Remarks ___________________________________

5. It is preferable not to open a transformer under adverse weather conditions. However, if weather is threatening, or the situation dictates that the transformer must be entered in foul weather, then a weatherproof enclosure with a double door entrance lock should be built around the transformer so that work can proceed. Was this done?

Yes _____ No______ Remarks ___________________________________

6. If there is evidence of rough handling in transit, an internal inspection should be made to check for shipping damage. If no damage is found, proceed with installation and dress out. If damage is found, contact the Substation Design Engineer who will file a shipping damage claim with the carrier and contact the factory. Report findings of internal inspection. Remarks ______________________________________________________________ ______________________________________________________________

7. The transformer tank and windings should be grounded. Was this done?

Yes _____ No______ Remarks ___________________________________

8. All pipe fittings that are used for air or gas joints up to, and including, one-inch diameter are to be sealed using Teflon tape. Was this done?

Yes _____ No______ Remarks ___________________________________

9. Any valves that were removed for shipping should be installed on the transformer, re-using the same gasket and hardware. Was this done?

Yes _____ No______ Remarks ___________________________________

10. Install bushings per instructions. Bushing gaskets and hardware are to be reused. It is recommended that the middle bushing be installed first and then the ones on the outside. It is also recommended that the largest bushings be installed first and then the next largest down to the smallest bushing supplied. Was this done?

Yes _____ No______ Remarks ___________________________________

11. Before any bushing is internally connected, the tank should be sealed and pressure tested to 6 PSI for four hours to determine that there are no bushing gasket leaks. Was this done?

Yes _____ No______ Remarks ___________________________________

12. The outline drawing will identify pieces removed for shipment and they should be re-installed as per this drawing. Was this done?

Yes _____ No______ Remarks ___________________________________

13. Check current transformer ratio and polarity at the control cabinet. Was this done?

Yes _____ No______ Remarks ___________________________________

14. Check ratio of main transformer on all tap positions before the transformer is closed

for final oil filling. Was this done?

Yes _____ No______ Remarks ___________________________________

15. Remove all packing and other installation material from the interior of the transformer. Have one person make a thorough inspection to determine all internal work is complete and no foreign material is left inside. After this inspection, install all manhole covers and prepare for vacuum treatment and final oil filling. Before pulling vacuum, check that external leads have not been made to bushings, as the connection might restrain the bushings from flexing with the cover, resulting in broken porcelain. Was this done?

Yes _____ No______ Remarks ___________________________________

16. The following tests are to be performed, and a permanent record of the results saved to serve as a basis for comparison with any future tests.

• Oil Sample Tests – TCA, TASA, DGA • DOBLE, Transformer – all positions, Bushings – C1, C2, & Hot Collar, Surge

Arrestors, Excitation • TTR on all tap positions for both No-Load and LTC • Micro ohm – Winding Resistance • MEGGER – Core Ground, Insulation, & Polarization Index • SFRA Test

• CT Saturation and megger tests • CT ratio and polarity tests • PT Tests, if applicable • Megger surge arresters • TRO test of temperature devices • Relay tests of all relays installed on transformer

Forward results of tests to the Substation Design Engineer, Maintenance Engineer, and Supervisor – Substation Maintenance. NAME: ___________________________________________________ DATE: ___________________________________________________ TITLE: ___________________________________________________

16. TRANSFORMER RECEIPT AND ACCEPTANCE FLOW CHART

H:\Leonard's\EDS-E2B-D001-0.dwg, 7/8/2015 3:04:58 PM, Adobe PDF.pc3

no. technical specification - bidnet 2.2 the transformer manufacturer shall provide calculations and...

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