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PRINTOUT MAY NOT BE UP-TO-DATE; REFER TO METRO INTRANET FOR THE LATEST VERSION
Engineering Specification
Electrical Networks
MESP 000003-06 SUBSTATION EQUIPMENT, DEVICE AND WIRE
NAMING AND NUMBERING
Version: 1
Issued: February 2017
Owner: Head of Engineering - Electrical
Approved By:
Andrew Russack
Head of Engineering - Electrical
ELECTRICAL SPECIFICATION SUBSTATION EQUIPMENT, DEVICE AND WIRE
NAMING AND NUMBERING
MESP 000003-06 Version: 1 Effective from: 21st February 2017
L1-CHE-SPE-199
Approving Manager: Head of Engineering - Electrical Approval Date: 21/02/2017 Next Review Date: 21/02/2020 PRINTOUT MAY NOT BE UP-TO-DATE; REFER TO METRO INTRANET FOR THE LATEST VERSION Page 2 of 44
Approval
Amendment Record
Approval Date Version Description
21/02/2017 1 Initial issue.
ELECTRICAL SPECIFICATION SUBSTATION EQUIPMENT, DEVICE AND WIRE
NAMING AND NUMBERING
MESP 000003-06 Version: 1 Effective from: 21st February 2017
L1-CHE-SPE-199
Approving Manager: Head of Engineering - Electrical Approval Date: 21/02/2017 Next Review Date: 21/02/2020 PRINTOUT MAY NOT BE UP-TO-DATE; REFER TO METRO INTRANET FOR THE LATEST VERSION Page 3 of 44
Table of Contents 1 Purpose ........................................................................................................................... 4
2 Scope ............................................................................................................................... 4
3 Abbreviations .................................................................................................................. 4
4 Definitions ....................................................................................................................... 4
5 References ...................................................................................................................... 5
5.1 Related Documents .......................................................................................................... 5
5.2 References ........................................................................................................................ 5
5.3 Latest Issues and Amendments ....................................................................................... 5
6 Principle .......................................................................................................................... 5
7 Substation Equipment Naming ...................................................................................... 5
7.1 General ............................................................................................................................. 5
7.2 Conventions ...................................................................................................................... 6
7.2.1 HV AC Switchgear .......................................................................................... 6 7.2.2 Rectifier Units .................................................................................................. 6 7.2.3 1500V DC Switchgear..................................................................................... 6 7.2.4 Signal & Essential Services Switchgear ......................................................... 7 7.2.5 Buses .............................................................................................................. 7 7.2.6 Transformers and UPS units .......................................................................... 7 7.2.7 Other ............................................................................................................... 8
8 Device and Component Numbering .............................................................................. 8
8.1 Background ....................................................................................................................... 8 8.2 Requirements .................................................................................................................... 8
9 Wire and Cable Numbering ............................................................................................ 9
9.1 Background ....................................................................................................................... 9 9.2 Principles .......................................................................................................................... 9
9.3 Preferred Wire Numbering ................................................................................................ 9
9.4 Manufacturer Wire Numbering ........................................................................................ 10
9.5 Cable Numbering ............................................................................................................ 10
9.5.1 SCADA Cable Numbers................................................................................ 11 9.5.2 Non-SCADA Cable Numbers ........................................................................ 12
9.6 Labelling .......................................................................................................................... 12
Appendix 1: MTM Device Numbers ............................................................................................ 13
Appendix 2: Device and Wire Numbering Example – Rectifier Control Circuit ...................... 24
Appendix 3: Historical Device Numbers .................................................................................... 26
ELECTRICAL SPECIFICATION SUBSTATION EQUIPMENT, DEVICE AND WIRE
NAMING AND NUMBERING
MESP 000003-06 Version: 1 Effective from: 21st February 2017
L1-CHE-SPE-199
Approving Manager: Head of Engineering - Electrical Approval Date: 21/02/2017 Next Review Date: 21/02/2020 PRINTOUT MAY NOT BE UP-TO-DATE; REFER TO METRO INTRANET FOR THE LATEST VERSION Page 4 of 44
1 Purpose This document sets out requirements and conventions for the naming and numbering of equipment, devices and control wiring in all High Voltage Installations on the MTM network to ensure consistency and accuracy for the safe operation and maintenance of all equipment.
It is imperative that labels are applied to enable the naming convention to be utilised in the field, and that these labels are appropriate. Information on labelling can be found within MESP 000003-04 Substation Signage and Labelling.
2 Scope This document applies to all traction substations, tie stations, switching stations, signal power supplies, industrial substations and other high voltage installations maintained by the MTM Electrical Networks Department. It need not be applied to power installations maintained by the Structures and Facilities Department.
3 Abbreviations ACCB – Alternating Current Circuit Breaker (HV)
CT – Current Transformer
DCCB – Direct Current Circuit Breaker
HV – High Voltage
MCB – Miniature Circuit Breaker (LV)
MTM – Metro Trains Melbourne
VT – Voltage Transformer
4 Definitions Device Means an active component of a control system, including relays,
switches, pushbuttons, etc. Items such as fuses, resistors and transformers are not included in this definition.
Equipment Includes High Voltage Switchgear, Transformers, Rectifiers and associated items.
High Voltage Means a nominal voltage of 650V or greater.
Shall Is used as the descriptive word to express a requirement that is mandatory to achieve conformance to the standard.
Should Is used as the descriptive word to express a requirement that is recommended in order to achieve compliance to the standard. Should can also be used if a requirement is a design goal but not a mandatory requirement.
ELECTRICAL SPECIFICATION SUBSTATION EQUIPMENT, DEVICE AND WIRE
NAMING AND NUMBERING
MESP 000003-06 Version: 1 Effective from: 21st February 2017
L1-CHE-SPE-199
Approving Manager: Head of Engineering - Electrical Approval Date: 21/02/2017 Next Review Date: 21/02/2020 PRINTOUT MAY NOT BE UP-TO-DATE; REFER TO METRO INTRANET FOR THE LATEST VERSION Page 5 of 44
Substation For the purpose of this document refers to a high voltage installation maintained by the MTM Electrical Networks Department, including traction substations, tie stations, switching stations, signal power supplies and industrial substations.
5 References
5.1 Related Documents MESP 000003-04(1) Substation Signage and Labelling
5.2 References The following standards are provided as informative references. Requirements for compliance with standards are described throughout the document.
AS 2067 Substations and high voltage installations exceeding 1 kV a.c.
ANSI / IEEE C37.2 Standard for Electrical Power System Device Function Numbers, Acronyms and Contact Designations
5.3 Latest Issues and Amendments Reference to all standards shall be read as a reference to the latest edition of that standard and amendments available at the time of tendering.
6 Principle Each individual device in a substation has a unique number identifying the type of device it is, and each piece of equipment a unique name within that substation. Thus, each piece of equipment can be identified easily and unambiguously by operators and maintainers.
7 Substation Equipment Naming
7.1 General Each piece of substation equipment shall be uniquely named within that particular substation.
The name of the equipment shall, by following the convention below, allow for easy identification of the type, purpose and in some cases, voltage of the equipment.
ELECTRICAL SPECIFICATION SUBSTATION EQUIPMENT, DEVICE AND WIRE
NAMING AND NUMBERING
MESP 000003-06 Version: 1 Effective from: 21st February 2017
L1-CHE-SPE-199
Approving Manager: Head of Engineering - Electrical Approval Date: 21/02/2017 Next Review Date: 21/02/2020 PRINTOUT MAY NOT BE UP-TO-DATE; REFER TO METRO INTRANET FOR THE LATEST VERSION Page 6 of 44
7.2 Conventions
7.2.1 HV AC Switchgear For HV AC switchgear, including isolators, switches, fuses, ACCBs, and earth switches, naming shall be in the format “AA/B C”, where:
• AA is the voltage in kV, truncated (not rounded) to a whole number (e.g. 22, 11 or 6)
• B designates the equipment connected to the bus by this switchgear:
o Rx – Rectifier x, matching the name of the Rectifier Assembly.
o xx – MTM Feeder AA/xx, e.g. “22/61”
o Power company feeder number, e.g. “FGY 6”
o For any other equipment, the name of the connected equipment.
• C is the type of switchgear:
o Switch
o Fuse Isolator (or Fuse Isol.)
o Isolator
o ACCB
o Earth Switch
Where an HV feeder is connected to a bus by an isolator, then an ACCB, then a second isolator; the isolator directly connected to the bus shall be named “AA/xx Bus Isolator”
Bus tie ACCBs should be named “AA/Bus Tie x&y” where x is the number of the bus on the supply side of the ACCB and y is the number of the bus on the line side (with the bus riser connected to it).
7.2.2 Rectifier Units For Rectifier Assemblies, each unit shall be named “Rx” where x is a number, different for each rectifier unit at the substation. This shall apply regardless of whether there is more than one rectifier unit at the substation.
For Rectifier Control Systems, naming shall be “Rx Control” where Rx is the name of the Rectifier Assembly being controlled.
Rectifier Transformers shall be named “RTx” where x is a number and Rx is the name of the corresponding Rectifier Assembly.
7.2.3 1500V DC Switchgear 1500V DC Switchgear (DCCBs and Isolators) shall be named:
• For Section DCCBs, the number of the section, e.g. “431”
• For Rectifier DCCBs, “Rx DCCB” where Rx is the name of the connected Rectifier Assembly.
ELECTRICAL SPECIFICATION SUBSTATION EQUIPMENT, DEVICE AND WIRE
NAMING AND NUMBERING
MESP 000003-06 Version: 1 Effective from: 21st February 2017
L1-CHE-SPE-199
Approving Manager: Head of Engineering - Electrical Approval Date: 21/02/2017 Next Review Date: 21/02/2020 PRINTOUT MAY NOT BE UP-TO-DATE; REFER TO METRO INTRANET FOR THE LATEST VERSION Page 7 of 44
• For Rectifier Isolators “Rx DC Isolator” where Rx is the name of the connected Rectifier Assembly
• For Bus Tie DCCBs, “Bus Tie x & y DCCB” where x is the number of the bus which contains the Bus Tie DCCB and y is the number of the connected bus.
• For Bus Tie Isolators, “Bus Tie x & y Isolator” where x is the number of the bus which contains the Bus Tie DCCB and y is the number of the connected bus.
1500V DC short circuit switches shall be known by the number of the section or subsection to which they are connected, e.g. “Section 431 Short Circuit Switch”
7.2.4 Signal & Essential Services Switchgear Signal switchgear shall be named in accordance with the naming convention outlined in L1-CHE-INS-028 Design Practice Note - Signalling and High Voltage Equipment Enclosure Nomenclature Requirements, i.e. xAyyy where x is the number of the device on the bus, A is a letter indicating the line on which the bus is located, and yyy the distance in hundreds of feet from Flinders Street Station.
Generally the lower number on the bus (x) will be on the western end in accordance with existing practice. At a typical location, devices 1 and 3 will be track feeders and device 2 connected to the transformer.
7.2.5 Buses Buses shall be named:
• In the case of only one bus, the voltage of the bus, AC or DC, and the word “Bus”, e.g. “1500V DC Bus” or “22kV AC Bus”
• In the case of multiple buses, the voltage of the bus, AC or DC, and the words “Bus No. x” where x is a number, e.g. “1500V DC Bus No. 1” or “22kV AC Bus No. 2”
7.2.6 Transformers and UPS units Essential Services and Auxiliary Transformers shall be named “ESATx” where x is a number, regardless of whether there is more than one such transformer at the substation.
Essential Services UPS units shall be named “UPSx” where x is a number which corresponds to the number of the ESAT to which it is connected.
Essential Services Step Up Transformers, where not integral to the UPS, shall be named “ESTx”, where x corresponds to the number of the UPS to which it is connected, as far as possible.
Transformers used exclusively for signal power supply shall be named “STx” where x is a number, regardless of whether there is more than one Signal Transformer at the substation.
Transformers used exclusively for substation auxiliary services shall be named “ATx” where x is a number, regardless of whether there is more than one Auxiliary Transformer at the substation.
ELECTRICAL SPECIFICATION SUBSTATION EQUIPMENT, DEVICE AND WIRE
NAMING AND NUMBERING
MESP 000003-06 Version: 1 Effective from: 21st February 2017
L1-CHE-SPE-199
Approving Manager: Head of Engineering - Electrical Approval Date: 21/02/2017 Next Review Date: 21/02/2020 PRINTOUT MAY NOT BE UP-TO-DATE; REFER TO METRO INTRANET FOR THE LATEST VERSION Page 8 of 44
Isolating Transformers shall be named “xxx Isolating Transformer” where xxx is the name of the equipment being isolated.
Transformers within industrial substations, or for stepping up from 11kV to 22kV may be named in the format “Tx” where x is a number, regardless of whether there is more than one such transformer at the substation.
Other transformers shall be named in the format “aTx” where a is up to three letters describing the transformer’s purpose, and x is a number, e.g. “MBT1” for a transformer supplying a train maintenance building.
7.2.7 Other All other equipment shall be named uniquely in a way which succinctly describes its purpose and the type of equipment which it is.
8 Device and Component Numbering
8.1 Background Device numbering was introduced with automatic (unmanned) substations in the 1920s-30s. A system of unique device numbers then developed based on the ANSI/IEEE Standard C37.2 and its predecessors.
Due to technology change over time, there are now over 500 device numbers which have been used, many of which are now obsolete and no longer relevant to the MTM network. A list of all known used device numbers is provided in Appendix 2 for reference.
All new designs shall utilise the system of device numbering described in Appendix 1, which is largely compliant with the IEEE Std C37.2-2008.
A conversion table for typical device numbers used prior to the issue of this document has been provided in Appendix 3 for reference in relation to existing installations.
8.2 Requirements All devices which feature on control circuit drawings shall be allocated a unique device number which shall be marked on the relevant engineering drawings and on the device itself in accordance with MESP 000003-04 Substation Signage and Labelling. The drawings shall include a listing of device numbers and their descriptions.
A list of current device numbers expected is located in Appendix 1. Devices shall be allocated a number from this list where one is provided.
If the device type is not listed in Appendix 1, a new device number shall be created by the Office of the Chief Engineer and added to the listing. New device numbers should not have been used for any previous devices as listed in Appendix 2 which are likely to still be in service. They should, where possible, align with ANSI/IEEE Standard C37.2, and if this is not possible, should be a number not used in ANSI/IEEE Standard C37.2.
Components such as resistors, diodes, capacitors, inductors, transformers, fuses, links and MCBs shall be uniquely named in the format “Axxx” where A is a letter shown below and xxx is a two or three digit number. The numbers used shall be listed and described on the relevant engineering drawings.
ELECTRICAL SPECIFICATION SUBSTATION EQUIPMENT, DEVICE AND WIRE
NAMING AND NUMBERING
MESP 000003-06 Version: 1 Effective from: 21st February 2017
L1-CHE-SPE-199
Approving Manager: Head of Engineering - Electrical Approval Date: 21/02/2017 Next Review Date: 21/02/2020 PRINTOUT MAY NOT BE UP-TO-DATE; REFER TO METRO INTRANET FOR THE LATEST VERSION Page 9 of 44
The changeover switch, rectifier control switch/MCB, and supervisory control switch on the LV AC switchboard shall be given device numbers.
Table 1: Component Designations
C Capacitors D Diodes F Fuses H Lamps L Links Q MCBs T Transformers
9 Wire and Cable Numbering
9.1 Background Historically, wire numbers within railway substations were assigned in accordance with prescriptive Australian standards. More recently, wire numbers have been left to the discretion of manufacturers and designers, with the effect that there are many differing schemes in use.
9.2 Principles Wiring belongs to a control system (e.g. Rectifier Control System, Bus Protection System etc.), not to equipment. All wiring within that control system should utilise a consistent numbering format.
Every branch of any connection should bear the same identification mark. That is, a wire number should only change when passing through a coil, contact, removable link, fuse or circuit breaker etc.
9.3 Preferred Wire Numbering Where a switchgear manufacturer provides drawings which utilise a different numbering system this may be retained (refer section 9.4). Where a design is completed specifically for MTM, the following principles are to be applied for the naming of wires (in accordance with Appendix E of AS 2067:2016):
• Wires should be numbered according to their function as shown in Table 2. This number consists of a single letter code identifying the function and a suffix number of one or more digits as required.
• Where a number of similar wires from separate equipment are taken to a common panel (such as bus protection), a suffix letter should be added to distinguish them.
• Where more than one function is covered by a wire, the first of the appropriate function letters shall be used.
• Coils and contacts of relays should not necessarily utilise the same function letter
ELECTRICAL SPECIFICATION SUBSTATION EQUIPMENT, DEVICE AND WIRE
NAMING AND NUMBERING
MESP 000003-06 Version: 1 Effective from: 21st February 2017
L1-CHE-SPE-199
Approving Manager: Head of Engineering - Electrical Approval Date: 21/02/2017 Next Review Date: 21/02/2020 PRINTOUT MAY NOT BE UP-TO-DATE; REFER TO METRO INTRANET FOR THE LATEST VERSION Page 10 of 44
Table 2: Wire Functions Letter Circuit Function Wire Numbers
B CTs for bus protection 10-29 Red phase 30-49 White phase 50-69 Blue phase 70-89 Residual and neutral CTs 90 Earth wires directly connected to the earth bar 91-99 Test windings, normally inoperative.
C CTs for feeder, transformer or rectifier protection
D CTs for instruments and metering
E Reference voltage for instruments, metering and protection
G Reference voltage for synchronising
H AC supplies 1-69 Switchgear 70-99 Transformers J DC supplies (odd numbers positive, even
numbers negative) K Closing and tripping control circuits Any number L Alarms and indications, not for SCADA Any number
M Auxiliary and control motor devices 1-19 Switchgear 70-99 Transformers
R Interlock circuits Any number
T Pilot conductors for pilot wire protection or intertripping Any number
U Spare cores and connections to spare contacts Any number W Connections to and from interposing relays Any number X Connections to and from SCADA Any number
9.4 Manufacturer Wire Numbering Where a manufacturer provides equipment which includes the complete control system (aside from various indicating contacts), the manufacturer’s wire numbering system is acceptable. Examples include switchgear assemblies, except where a separate rectifier control system is utilised.
Where a manufacturer provided wire number connects to a contact of another device, it should retain its manufacturer provided number. Any additional wires should be named in accordance with section 9.2.
A wire shall not change number moving from one piece of equipment to another. The primary equipment’s wire number shall be retained and the wire number altered within the secondary equipment.
9.5 Cable Numbering Cables, shown on the Equipment Interconnections Diagram, shall be assigned a unique number within the substation.
ELECTRICAL SPECIFICATION SUBSTATION EQUIPMENT, DEVICE AND WIRE
NAMING AND NUMBERING
MESP 000003-06 Version: 1 Effective from: 21st February 2017
L1-CHE-SPE-199
Approving Manager: Head of Engineering - Electrical Approval Date: 21/02/2017 Next Review Date: 21/02/2020 PRINTOUT MAY NOT BE UP-TO-DATE; REFER TO METRO INTRANET FOR THE LATEST VERSION Page 11 of 44
9.5.1 SCADA Cable Numbers Cables connected from equipment to the SCADA RTU shall be utilised in accordance with MESP 081000-01. Each cable shall be numbered according to its function and the RTU to which it is connected in accordance with the following format: SxxyZ where xx is the equipment as listed in Table 3, y is the function of that equipment listed in Table 4 and Z is a letter (A, B or C) representing the RTU.
Table 3: SCADA Wire Numbers - Equipment Equipment
(x) Meaning 00 Miscellaneous 01 Incomer 1 ACCB 02 Incomer 2 ACCB 03 Rail Feeder 1 ACCB 04 Rail Feeder 2 ACCB 05 Bus Tie ACCB 06 Battery Charger 07 AT LV CB 08 AT ACCB 09 Thyristor Drainage Unit 10 ST ACCB 11 Signal/Essential Services CB 1 12 Signal/Essential Services CB 2 13 Signal/Essential Services CB 3 14 Signal/Essential Services CB 4 15 Signal/Essential Services CB 5 16 Signal/Essential Services CB 6 17 18 R1 ACCB 19 R2 ACCB 20 Feeder 1 DCCB 21 Feeder 2 DCCB 22 Feeder 3 DCCB 23 Feeder 4 DCCB 24 Feeder 5 DCCB 25 Feeder 6 DCCB 26 Feeder 7 DCCB 27 Feeder 8 DCCB 28 Bus Tie DCCB
30-50 Other equipment 52 Essential Services UPS
ELECTRICAL SPECIFICATION SUBSTATION EQUIPMENT, DEVICE AND WIRE
NAMING AND NUMBERING
MESP 000003-06 Version: 1 Effective from: 21st February 2017
L1-CHE-SPE-199
Approving Manager: Head of Engineering - Electrical Approval Date: 21/02/2017 Next Review Date: 21/02/2020 PRINTOUT MAY NOT BE UP-TO-DATE; REFER TO METRO INTRANET FOR THE LATEST VERSION Page 12 of 44
Table 4: SCADA Wire Numbers - Function Function
(y) Meaning 0 CB/Switch Control and Indication 1 Feeder Alive OR Under Voltage 2 Lock Out 3 Watchdog Indication 4 Earth Switch Indication 5 Arc Fault Detector Watchdog Indication 6 Earth Fault 1 7 Earth Fault 2 OR Surge 8 Trip circuit supervision 9 Protection & Control Supply
For example, the lockout indication for R1, connected to RTU A would utilise cable S182A.
Since multiple unit substations also include multiple RTUs, there are standard numbers provided only for the maximum expected number of items of each type for a single unit substation. That is, ST2 would be connected to RTU B, and thus the ACCB would use cable number S100B.
9.5.2 Non-SCADA Cable Numbers Control cables not connected to the SCADA RTU shall be assigned any two or three digit number not already used within the substation. All cables assigned a number should be shown on the Equipment Interconnections Diagram.
9.6 Labelling Each wire shall be labelled adjacent to each termination using a sleeved marker.
The label should contain only the wire number, or if part of a cable, both the cable number and wire number in the format xxx/yyy where xxx is the cable number and yyy the wire number (e.g. 187/K41 for wire K41 in cable 187). The same number format should be utilised on Equipment Interconnection Drawings.
ELECTRICAL SPECIFICATION SUBSTATION EQUIPMENT, DEVICE AND WIRE NAMING AND NUMBERING
MESP 000003-06 Version: 1 Effective from: 21st February 2017
L1-CHE-SPE-199
Approving Manager: Head of Engineering - Electrical Approval Date: 21/02/2017 Next Review Date: 21/02/2020 PRINTOUT MAY NOT BE UP-TO-DATE; REFER TO METRO INTRANET FOR THE LATEST VERSION Page 13 of 44
Appendix 1: MTM Device Numbers Device numbers are to be formed by combining a root number with a suffix if required.
The suffix X may be added to any device number to indicate an auxiliary relay for that device.
Where multiples of the same device occur within a circuit, they may be differentiated in one of two ways:
• A hyphen and a number may be added to the end of the device number (e.g. 52BF-1, 52BF-2, AFD-1, AFD-2 in a bus protection tripping circuit) o The number should match the panel number of the switchgear assembly if this is applicable for the equipment in question
• A hyphen and designation of the device (e.g. 52BF-R1, 52BF-AT1, AFD-R1, AFD-AT1 in a bus tripping circuit) o No slashes may be used in this designation (hence the removal of the 22/ in the above example).
Root Device Device Number Description Usage Notes Historically Used Device
Numbers
Multifunction Device (Expression of functions not to
standard)
11 Digital Protection Relay Use for any digital device with at least two functions. For DC protection relays, refer device 76
51C, 162C, 262C, 362C
11{xx} Where xx is another device number, that element of the multifunction device
Used for output contacts of digital devices, e.g. 11{50N/51N} for Earth Fault contact. Where the manufacturer has a name for the contact used, that is appended to the function, e.g. 11{50N/51N-RL2}
11{WD} Watchdog contact Where the manufacturer has a name for the contact used, that is appended to the function
11{TP} Combined trip output Where the manufacturer has a name for the contact used, that is appended, e.g. 11{TP-RL1}
ELECTRICAL SPECIFICATION SUBSTATION EQUIPMENT, DEVICE AND WIRE NAMING AND NUMBERING
MESP 000003-06 Version: 1 Effective from: 21st February 2017
L1-CHE-SPE-199
Approving Manager: Head of Engineering - Electrical Approval Date: 21/02/2017 Next Review Date: 21/02/2020 PRINTOUT MAY NOT BE UP-TO-DATE; REFER TO METRO INTRANET FOR THE LATEST VERSION Page 14 of 44
Root Device Device Number Description Usage Notes Historically Used Device
Numbers
Frequency Matching Device
15 UPS Load Bus Synchronisation Used to denote the input terminals to the UPS which allow synchronisation of the UPS to an external signal
15S Relay selecting synchronisation source More than one of this device would be used in a circuit, designated 15S-1, 15S-2 etc.
Communication Networking Device
16 Communication networking device to be numbered in accordance with Annex B or IEEE Std C37.2-2008
16ES Ethernet Switch
Temperature Control Device 23 Thermostat Used for control of device 125 23
Undervoltage relay 27 Undervoltage or supply/bus alive relay 27
27T Time delayed undervoltage relay 27T
Annunciator relay
30 Flag Relay Where a function is not described below, flag relays should be notated 30/1, 30/2 and so on.
30A AC Earth Leakage 30A
30B DC Earth Leakage 30B
30DC Rectifier DCCB initiated ACCB trip Indicates that the Rectifier DCCB has tripped automatically, causing lockout of the rectifier unit. 30DC
30J Undervoltage 30J
Position Switch 33 Microswitch Used for indicating closed/ open position of items without device numbers (refer also 52TOC)
ELECTRICAL SPECIFICATION SUBSTATION EQUIPMENT, DEVICE AND WIRE NAMING AND NUMBERING
MESP 000003-06 Version: 1 Effective from: 21st February 2017
L1-CHE-SPE-199
Approving Manager: Head of Engineering - Electrical Approval Date: 21/02/2017 Next Review Date: 21/02/2020 PRINTOUT MAY NOT BE UP-TO-DATE; REFER TO METRO INTRANET FOR THE LATEST VERSION Page 15 of 44
Root Device Device Number Description Usage Notes Historically Used Device
Numbers
Atmospheric Condition Monitor 45 Oxygen or SF6 detection relay
Machine / Transformer Thermal Overload Relay
49 Over temperature relay Temperature monitoring of transformers etc.
49C Critical over temperature relay Contact/device used to cause tripping of circuit breaker
49WD Temperature monitoring relay watchdog contact
49W Warning over temperature relay Contact/device used for indication only
Instantaneous Overcurrent Relay
50 Definite time Phase Overcurrent Relay 51, 51T, 176I
50B Definite time Bus Summation Relay 163
50BF Current Monitoring CB Fail
50N Neutral Overcurrent Relay Utilises residual current from star connected CTs 64
Time delay Overcurrent Relay
51 Inverse Time Phase Overcurrent Relay 51T, 51TH, 176
51B Inverse Time Bus Summation Relay 163
51N Inverse Time Neutral Overcurrent Relay Utilises residual current from star connected CTs
AC Circuit Breaker
52 AC Circuit Breaker Used for all HV ACCBs 52
52BF Circuit Breaker Failure Relay Detects failure of the CB to open when tripped.
52CC Closing Coil 52CC
52CS Control Switch Located on control panel, switch to open and close circuit breaker locally in normal operation. 52CS
ELECTRICAL SPECIFICATION SUBSTATION EQUIPMENT, DEVICE AND WIRE NAMING AND NUMBERING
MESP 000003-06 Version: 1 Effective from: 21st February 2017
L1-CHE-SPE-199
Approving Manager: Head of Engineering - Electrical Approval Date: 21/02/2017 Next Review Date: 21/02/2020 PRINTOUT MAY NOT BE UP-TO-DATE; REFER TO METRO INTRANET FOR THE LATEST VERSION Page 16 of 44
Root Device Device Number Description Usage Notes Historically Used Device
Numbers
52DOC Door Operated Contact Limit switch on ACCB compartment door
52DL Door locking coil Allows opening of the ACCB compartment door when coil energised
52DR Door release switch/pushbutton Allows opening of ACCB compartment door when pressed/actuated
52KI Key Interlock Electrical key interlocking. Typically used to ensure the circuit breaker trips if the key is removed to enable the earth switch to be closed
52KI
52LR Local/Remote Switch
Isolates all forms of remote control, including relays and remote control panels at the substation – the circuit breaker is only operable using device 52TS. Usage of this device in control circuits is applicable only where remote control panels exist within the substation, otherwise refer to device 230. Indications must also be isolated using this switch to ensure tripping is not accidental
52LR
52M Spring Rewind Motor 52M
52MX Spring Rewind Motor Contactor Used to control device 52M 52MX
52RL Racking mechanism locking coil Allows racking of the circuit breaker when energised
52S Spring Limit Switch Indicates that the operating spring is fully wound 52S, 52LS
52TC Trip Coil Trips the circuit breaker 52TC
52TCM Trip Circuit Monitoring Function of relay monitoring continuity of trip circuit
ELECTRICAL SPECIFICATION SUBSTATION EQUIPMENT, DEVICE AND WIRE NAMING AND NUMBERING
MESP 000003-06 Version: 1 Effective from: 21st February 2017
L1-CHE-SPE-199
Approving Manager: Head of Engineering - Electrical Approval Date: 21/02/2017 Next Review Date: 21/02/2020 PRINTOUT MAY NOT BE UP-TO-DATE; REFER TO METRO INTRANET FOR THE LATEST VERSION Page 17 of 44
Root Device Device Number Description Usage Notes Historically Used Device
Numbers
52TCS Trip Coil Supervision Relay Relay to check continuity of wiring to trip coil
52TI Trip In (Closing) Relay Relay to close the circuit breaker via spring or magnetic actuators, or contactor to supply closing coil.
52TI
52TO Trip Out (Opening) Relay Relay to trip the circuit breaker via spring or magnetic actuators, or contactor to supply trip coil. 52TO
52TOC Truck Operated Contacts (Racking position auxiliary contacts) Shown in CB connected position
52TS Test Switch Provides local control at the circuit breaker when 52LR is in the Local position. Used during maintenance.
52TS
52Z One shot / Single close relay Ensures single attempt to close per command 52Z
Short circuiting or earthing switch
57 Earthing Switch
57KI Key Interlock Key interlocking on earth switch or short circuit switch
57SC Short Circuiting Switch (DC Traction)
ELECTRICAL SPECIFICATION SUBSTATION EQUIPMENT, DEVICE AND WIRE NAMING AND NUMBERING
MESP 000003-06 Version: 1 Effective from: 21st February 2017
L1-CHE-SPE-199
Approving Manager: Head of Engineering - Electrical Approval Date: 21/02/2017 Next Review Date: 21/02/2020 PRINTOUT MAY NOT BE UP-TO-DATE; REFER TO METRO INTRANET FOR THE LATEST VERSION Page 18 of 44
Root Device Device Number Description Usage Notes Historically Used Device
Numbers
Ground Protective Relay
64 Frame Leakage relay Number formerly used for Earth Fault (refer 50N, 51N)
64/R Red Phase Earthed Relay Indicates one wire of unearthed signal power distribution is faulted. 64/R
64/W White Phase Earthed Relay Indicates one wire of unearthed signal power distribution is faulted. 64/W
64A DC Frame leakage relay 64A
Directional Overcurrent Relay 67 Directional Overcurrent Relay
DC Circuit Breaker
72 Traction DC Circuit Breaker 54, 154, 254
72CC Closing Coil
72CS Control Switch
72HC Holding Coil
72X Closing coil auxiliary contactor
72TOC Truck Operated Contacts (Racking position auxiliary contacts)
72Z One shot / Single close relay 194
DC Overcurrent Relay 76 DC Protection Relay
Used to include all DC protection functions. Multipurpose DC protection relay may be considered device 76.
ELECTRICAL SPECIFICATION SUBSTATION EQUIPMENT, DEVICE AND WIRE NAMING AND NUMBERING
MESP 000003-06 Version: 1 Effective from: 21st February 2017
L1-CHE-SPE-199
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Root Device Device Number Description Usage Notes Historically Used Device
Numbers
Locking-out relay 86 Lockout Relay Manually reset latching relay which prevents closing of a circuit breaker after particular types of fault such as frame leakage.
86
Differential Protective Relay
87B Bus current differential relay
87L Line current differential relay
Line Switch (Disconnector / Isolator)
89 Rectifier DC Isolator
89B Bus Isolator
89BT Bus Tie Isolator
89L Line Isolator
Tripping relay or Trip-free relay
94 Intertrip setup
94A Rectifier DCCB/ACCB Intertrip Relay 94A
94B Rectifier ACCB/Section DCCBs Tripping Relay 94B
94MT Bus Master Trip Relay Used on AC buses to trip all ACCBs due to bus protection or circuit breaker failure 170
Cubicle Heater 123 Cubicle/Cabinet Heater 25,125
123CS Cubicle/Cabinet Heater Switch 26
Voltmeter 136 Voltmeter 36, 136
Voltage Transformer 141 Voltage Transformer
Measurement Shunt 157 Shunt
ELECTRICAL SPECIFICATION SUBSTATION EQUIPMENT, DEVICE AND WIRE NAMING AND NUMBERING
MESP 000003-06 Version: 1 Effective from: 21st February 2017
L1-CHE-SPE-199
Approving Manager: Head of Engineering - Electrical Approval Date: 21/02/2017 Next Review Date: 21/02/2020 PRINTOUT MAY NOT BE UP-TO-DATE; REFER TO METRO INTRANET FOR THE LATEST VERSION Page 20 of 44
Root Device Device Number Description Usage Notes Historically Used Device
Numbers
157R Rectifier Shunt
157SS Substation Shunt
Ammeter 158 Ammeter 58
Electrolysis drainage contactor isolating switch
159 59
Electrolysis drainage contactor 160 60
Indicating light switch
166 Indicating light switch 66, 166
166TS Lamp Test Switch/Button
Cubicle light switch 168 Cubicle/inspection light switch 68
168T Cubicle/inspection light timer
Fuse Failure 172 Fuse Failure Contacts Indicates when a fuse has operated 72
Current Transformer
193A Transformer/Rectifier/Feeder Protection CT
193B Bus Protection CT
193C Power Company Protection CT
193D Power Company Metering CT
Supervisory Interposing Relays 206 Supervisory ‘ON’ Interposing Relay –
400V CB Used for all 400V remotely controlled circuit breakers
ELECTRICAL SPECIFICATION SUBSTATION EQUIPMENT, DEVICE AND WIRE NAMING AND NUMBERING
MESP 000003-06 Version: 1 Effective from: 21st February 2017
L1-CHE-SPE-199
Approving Manager: Head of Engineering - Electrical Approval Date: 21/02/2017 Next Review Date: 21/02/2020 PRINTOUT MAY NOT BE UP-TO-DATE; REFER TO METRO INTRANET FOR THE LATEST VERSION Page 21 of 44
Root Device Device Number Description Usage Notes Historically Used Device
Numbers
206L 400V remotely controlled CB latching relay
207 Supervisory ‘OFF’ Interposing Relay – 400V CB
208 Supervisory ‘ON’ Interposing Relay – Electrolysis Mitigation
Used for control of Electrolysis TDU
209 Supervisory ‘OFF’ Interposing Relay – Electrolysis Mitigation
210 Supervisory ‘START’ Interposing Relay – Rectifier
Used for control of Rectifier units
211 Supervisory ‘STOP’ Interposing Relay – Rectifier
212 Supervisory ‘CLOSE’ Interposing Relay – Section/Feeder DCCB (Control voltage holding)
Used to remotely close DCCBs where the holding coil is supplied from the substation control voltage
212BL Supervisory ‘CLOSE’ Interposing Relay – Section/Feeder DCCB (Bus or Line holding)
Used to remotely close DCCBs where the holding coil is supplied from either the bus or line side of the DCCB
212BLX Latching auxiliary relay for 212BL, tripped by 213BL
212L Supervisory ‘CLOSE’ Interposing Relay – Section/Feeder DCCB (Line holding)
Used to remotely close DCCBs where the holding coil is supplied from the line side of the DCCB only
ELECTRICAL SPECIFICATION SUBSTATION EQUIPMENT, DEVICE AND WIRE NAMING AND NUMBERING
MESP 000003-06 Version: 1 Effective from: 21st February 2017
L1-CHE-SPE-199
Approving Manager: Head of Engineering - Electrical Approval Date: 21/02/2017 Next Review Date: 21/02/2020 PRINTOUT MAY NOT BE UP-TO-DATE; REFER TO METRO INTRANET FOR THE LATEST VERSION Page 22 of 44
Root Device Device Number Description Usage Notes Historically Used Device
Numbers
213 Supervisory ‘OPEN’ Interposing Relay – Section/Feeder DCCB (Control voltage holding)
Used to remotely open DCCBs where the holding coil is supplied from the substation control voltage
213BL Supervisory ‘OPEN’ Interposing Relay – Section/Feeder DCCB (Bus or Line holding)
Used to remotely open DCCBs where the holding coil is supplied from either the bus or line side of the DCCB
213L Supervisory ‘OPEN’ Interposing Relay – Section/Feeder DCCB (Line holding)
Used to remotely open DCCBs where the holding coil is supplied from the line side of the DCCB only
214 Supervisory ‘CLOSE’ Interposing Relay – Feeder ACCB
Used for control of feeder ACCBs
215 Supervisory ‘OPEN’ Interposing Relay – Feeder ACCB
216 Supervisory ‘CLOSE’ Interposing Relay – Signal/Essential Services CB Used for control of Signal or Essential Services
circuit breakers
217 Supervisory ‘OPEN’ Interposing Relay – Signal/Essential Services CB
218 Supervisory ‘CLOSE’ Interposing Relay – 230V CB
Used for all 230V remotely controlled circuit breakers
219 Supervisory ‘OPEN’ Interposing Relay – 230V CB
220 Supervisory ‘CLOSE’ Interposing Relay – Bus Tie ACCB Used for control of bus tie ACCBs
ELECTRICAL SPECIFICATION SUBSTATION EQUIPMENT, DEVICE AND WIRE NAMING AND NUMBERING
MESP 000003-06 Version: 1 Effective from: 21st February 2017
L1-CHE-SPE-199
Approving Manager: Head of Engineering - Electrical Approval Date: 21/02/2017 Next Review Date: 21/02/2020 PRINTOUT MAY NOT BE UP-TO-DATE; REFER TO METRO INTRANET FOR THE LATEST VERSION Page 23 of 44
Root Device Device Number Description Usage Notes Historically Used Device
Numbers
221 Supervisory ‘OPEN’ Interposing Relay – Bus Tie ACCB
Supervisory Isolating Switch 230 C&I Isolating Switch
Yellow two position switch with positions labelled “Normal” and “Isolated”. Isolates remote control and main indication of a device by interrupting the commons.
Substation Auxiliary Power Switches
275 Supervisory 230V Supply Switch Main Switch for substation RTU 230V supply
317 Rectifier AC Control Supply Switch Main Switch for Rectifier Control Supply from substation auxiliary transformer
328 Substation Auxiliary Power Changeover Switch
Three position device to connect substation auxiliary loads to auxiliary transformer, portable generator (white or blue-white phase only), or isolate supply
376 Section DCCB Control Supply Switch Switch controlling 50V supply to a DC Zone or DCCB
Arc Flash Detector
AFD Arc Flash Detector Detects arc flashes
AFDB Arc Flash Detector (Bus Compartment) Detects arc flashes within main busbar compartment
AFDC Arc Flash Detector (Cable Compartment) Detects arc flashes within cable termination compartment
AFDS Arc Flash Detector (Switchgear Compartment)
Detects arc flashes within circuit breaker compartment
Clock or Timing Source CLK Clock GPS clock used for modern line current differential
relays
ELECTRICAL SPECIFICATION SUBSTATION EQUIPMENT, DEVICE AND WIRE NAMING AND NUMBERING
MESP 000003-06 Version: 1 Effective from: 21st February 2017
L1-CHE-SPE-199
Approving Manager: Head of Engineering - Electrical Approval Date: 21/02/2017 Next Review Date: 21/02/2020 PRINTOUT MAY NOT BE UP-TO-DATE; REFER TO METRO INTRANET FOR THE LATEST VERSION Page 24 of 44
Appendix 2: Device and Wire Numbering Example – Rectifier Control Circuit
ELECTRICAL SPECIFICATION SUBSTATION EQUIPMENT, DEVICE AND WIRE NAMING AND NUMBERING
MESP 000003-06 Version: 1 Effective from: 21st February 2017
L1-CHE-SPE-199
Approving Manager: Head of Engineering - Electrical Approval Date: 21/02/2017 Next Review Date: 21/02/2020 PRINTOUT MAY NOT BE UP-TO-DATE; REFER TO METRO INTRANET FOR THE LATEST VERSION Page 25 of 44
ELECTRICAL SPECIFICATION SUBSTATION EQUIPMENT, DEVICE AND WIRE
NAMING AND NUMBERING
MESP 000003-06 Version: 1 Effective from: 21st February 2017
L1-CHE-SPE-199
Approving Manager: Head of Engineering - Electrical Approval Date: 21/02/2017 Next Review Date: 21/02/2020 PRINTOUT MAY NOT BE UP-TO-DATE; REFER TO METRO INTRANET FOR THE LATEST VERSION Page 26 of 44
Appendix 3: Historical Device Numbers The table below lists all the device numbers known to be previously used in substations on the MTM network. It is provided for reference, and to avoid new equipment conflicting with existing definitions.
Old Device
Number Device Description
Current Device Number
-66 Reset Switch for Lock-Out Relay
2 Rectifier AC Isolator
3 22kV 3 Phase Earthing Switch (3 gang) 57
4 Master Contactor
5 50V DC Isolating Switch
6 Excitation Contactor
6T Excitation Thermostat
6X Auxiliary Relay for Device 6
7 Rectifier Cubicle Heater 123
8 Rectifier Control Supply Isolator
9 Rectifier Cubicle Thermostat 23
11 “Bus Alive” Auxiliary Transformer for Device 27
11GB Grid Blocking Transformer
12 Insulating Transformer for Auxiliary Relays
13A Insulating Transformer – Ignition Excitation & Grid
13B Insulating Transformer – Tank thermostat
13C Insulating Transformer – Excitation Establishment Relay
14 Frequency Tripling Transformer
14X, 14Y, 14Z Flag Indicator & Interposing Relays for Device 45
15 Main Rectifier Transformer
15LO Main Rectifier Transformer, Low Oil Level
16 Excitation and Fan Supply Transformer
17 Fan Choke
18 Time Delay Closing Relay for Rectifier DCCB
18M Motor for Device 18
18X Auxiliary Relay for Device 18
ELECTRICAL SPECIFICATION SUBSTATION EQUIPMENT, DEVICE AND WIRE
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MESP 000003-06 Version: 1 Effective from: 21st February 2017
L1-CHE-SPE-199
Approving Manager: Head of Engineering - Electrical Approval Date: 21/02/2017 Next Review Date: 21/02/2020 PRINTOUT MAY NOT BE UP-TO-DATE; REFER TO METRO INTRANET FOR THE LATEST VERSION Page 27 of 44
Old Device
Number Device Description
Current Device Number
19 Primary Fuses for Auxiliary Transformer
20 Mercury Arc Rectifier Tank
21 ACCB Closing Coil Supply Transformer
22 ACCB Closing Coil Supply Rectifier
24 ACCB Cabinet Heater Thermostat 23
25 ACCB Cabinet Heater 123
25C ACCB Cabinet Heater Contactor
25T ACCB Cabinet Heater Thermostat 23
26 ACCB Cabinet Heater Switch 123CS
27 AC Under Voltage Relay 27
27T AC Under Voltage Time Delay Relay 27T
27TR Rectifier for AC Under Voltage Time Delay Relay
27X Auxiliary Relay for Device 27 27X
27/1 AC Under Voltage Timing Relay
27/2 Low Voltage Relay
29 Resonant Shunt Isolator
29A Auxiliary Transformer 22kV 3 gang isolator
29B Wave Filter
29BX Wave Filter Fuses Failure Indication Relay
30 Regulating Transformer for ACCB Cabinet Heater Thermostat
30/2 Indicating Relay – AC Earth Leakage
30A Flag Indicating Relay – AC Earth Leakage 30A
30A/D Flag Indicating Relay – AC Earth Leakage Down Line
30A/U Flag Indicating Relay – AC Earth Leakage Up Line
30B Flag Indicating Relay – DC Earth Leakage 30B
30C Flag Indicating Relay – Fan Overload
30D Flag Indicating Relay – Anode Fuse Trip Indicators OR Rectifier Air Flow Indicator
30E Flag Indicating Relay – Frequency Tripling Transformer Fuse
30F Flag Indicating Relay – First Diode Failure
30G Flag Indicating Relay – Second Diode Failure
ELECTRICAL SPECIFICATION SUBSTATION EQUIPMENT, DEVICE AND WIRE
NAMING AND NUMBERING
MESP 000003-06 Version: 1 Effective from: 21st February 2017
L1-CHE-SPE-199
Approving Manager: Head of Engineering - Electrical Approval Date: 21/02/2017 Next Review Date: 21/02/2020 PRINTOUT MAY NOT BE UP-TO-DATE; REFER TO METRO INTRANET FOR THE LATEST VERSION Page 28 of 44
Old Device
Number Device Description
Current Device Number
30H Flag Indicating Relay – AC & DC Surges (Resonant Shunt)
30I Flag Indicating Relay – AC Overload (Instantaneous)
30J Flag Indicating Relay – Under Voltage 30J
30K Flag Indicating Relay – Thermal Overload
30L Flag Indicating Relay – Alternator Temperature Low Setting
30M Flag Indicating Relay – Alternator Temperature High Setting
30N Flag Indicating Relay – Motor Temperature Low Setting
30P Flag Indicating Relay – Motor Temperature High Setting
30R Flag Indicating Relay – Alternator Thermostats
30S Flag Indicating Relay – Transformer Low Oil Level
30T Flag Indicating Relay – Over Temperature
30TH Flag Indicating Relay – AC Overload
30/1 Indicating Relay – AC Overload
30/3 Indicating Relay – DC Frame Leakage 30B
30/4 Indicating Relay – Screen Leakage
30/5 Indicating Relay – Incomplete Sequence
30/6 Indicating Relay – Auxiliary Circuits
30/7 Indicating Relay – Excitation Failure
30/8 Indicating Relay – Under Voltage 30J
32 Voltmeter Selector Switch
36 Voltmeter 136?
40X Exciter Failure Alarm Relay (Or Excitation Auxiliary Relay)
40Y Auxiliary Relay for Device 40X
40Z Timing Relay for Device 40X
40ZX Contact Multiplier for Device 40Z
41 Frequency Changer
41AB Alternator Bearing Temperature Contact for Device 41
41AT Alternator Thermistor Relay for Device 41
41ER Excessive Run Up Flag Relay for Device 41
41MB Motor Bearing Temperature Controls for Device 41
41R Motor Starter Running Contactor for Device 41
ELECTRICAL SPECIFICATION SUBSTATION EQUIPMENT, DEVICE AND WIRE
NAMING AND NUMBERING
MESP 000003-06 Version: 1 Effective from: 21st February 2017
L1-CHE-SPE-199
Approving Manager: Head of Engineering - Electrical Approval Date: 21/02/2017 Next Review Date: 21/02/2020 PRINTOUT MAY NOT BE UP-TO-DATE; REFER TO METRO INTRANET FOR THE LATEST VERSION Page 29 of 44
Old Device
Number Device Description
Current Device Number
41RT Excessive Run Up Timing Relay for Device 41
41S Motor Starter Star Point Contactor for Device 41
44 Frequency Changer Starting Relay
44Z One Shot Relay for Device 44
45 Wind Vane Relay – Rectifier Cooling Air
45T Wind Vane Timer Relay – Rectifier Cooling Air
46 Arc Back Indicator and Reverse Current Relay
46X Auxiliary Relay for Device 46
46Y Arc Back Counting Relay
47 1500V Control Fuse
48 Starting Sequence Relay
49 Overheat Thermostat
49I Rectifier Fan Thermometer and Thermostat
49R Fan Control Resistor
49T Frequency Changer Starting Auto Transformer Thermostat
49TX Auxiliary Relay for Device 49T
49X Thermocouple for Device 49I
49X Thermostat Auxiliary Relay (for Device 49)
50 Thermostat Insulating Transformer (Tanks 1 & 2)
51 AC Overcurrent Relay – Rectifier – Instantaneous 50
51 Aux. Auxiliary Supply Overload Cut-Out
51BU AC Overcurrent Relay – Backup Protection 50
51C Combined AC O/C, Inverse Time and Earth Leakage Relay 11
51EX Excitations Supply Overcurrent Cut-Out
51F Fan Overcurrent Relay (Tanks 1 & 2) 50
51FS Ventilating Fan Overload Relay
51FX Auxiliary Relay for Device 51F
51GRID Grid Transformer Supply Overload Cut-Out
51IE AC Instantaneous Overload Element
51Ign. Ign & Grid Blocking Transformer Supply Overload Cut-Out
51IT AC Overcurrent Relay (Inverse Time) 51
ELECTRICAL SPECIFICATION SUBSTATION EQUIPMENT, DEVICE AND WIRE
NAMING AND NUMBERING
MESP 000003-06 Version: 1 Effective from: 21st February 2017
L1-CHE-SPE-199
Approving Manager: Head of Engineering - Electrical Approval Date: 21/02/2017 Next Review Date: 21/02/2020 PRINTOUT MAY NOT BE UP-TO-DATE; REFER TO METRO INTRANET FOR THE LATEST VERSION Page 30 of 44
Old Device
Number Device Description
Current Device Number
51MT Rectifier Protection Matching Transformer
51T AC Overcurrent Time Delay Relay 51
51TH AC Overcurrent Relay (Thermal) 51
51TX AC Overload Timer Auxiliary Rleay (Flag Indicating)
52 Rectifier ACCB 52
52A Rectifier ACCB Anti-Pumping Relay OR Auxiliary Relay 52Z
52CC Rectifier ACCB Closing Coil 52CC
52CS Rectifier ACCB Control Switch 52CS
52H Rectifier ACCB Limit Switch on Truck Handle
52IS Rectifier ACCB Control Supply Isolating Switch
52LC Rectifier ACCB Latch Check
52LR Rectifier ACCB Local/Remote Switch 52LR
52LS Limit Switch for Rectifier ACCB Spring Rewind Motor 52S
52M Rectifier ACCB Spring Rewind Motor 52M
52MX Contactor for Rectifier ACCB Spring Rewind Motor 52MX
52RV Rectifier Relief Valve for Pump Unit
52S Rectifier ACCB Closing Spring Limit Switch 52S
52T Rectifier ACCB Time Delay Relay
52TC Rectifier ACCB Trip Coil 52TC
52TCX Rectifier ACCB Trip Coil Auxiliary Relay
52TI Rectifier ACCB Trip In Relay 52TI
52TL Rectifier ACCB Truck Limit Device 52TOC
52TO Rectifier ACCB Trip Out Relay 52TO
52TS Rectifier ACCB Test Switch 52TS
52TSI Rectifier ACCB Test Switch Isolator
52W Rectifier ACCB Motor Isolating Switch (When Winding Handle Inserted)
52X Rectifier ACCB Closing Coil Contactor
52Y Rectifier ACCB Rectifier Contactor
52YX Auxiliary Relay for Device 52Y
52Z Rectifier ACCB Single Close Relay
ELECTRICAL SPECIFICATION SUBSTATION EQUIPMENT, DEVICE AND WIRE
NAMING AND NUMBERING
MESP 000003-06 Version: 1 Effective from: 21st February 2017
L1-CHE-SPE-199
Approving Manager: Head of Engineering - Electrical Approval Date: 21/02/2017 Next Review Date: 21/02/2020 PRINTOUT MAY NOT BE UP-TO-DATE; REFER TO METRO INTRANET FOR THE LATEST VERSION Page 31 of 44
Old Device
Number Device Description
Current Device Number
54 Rectifier DCCB 72
54A Rectifier DCCB Holding Coil Contactor 72X
54B Auxiliary Relay for Rectifier DCCB
54CC Rectifier DCCB Closing Coil 72CC
54CS Rectifier DCCB Control Switch 72CS
54HC Rectifier DCCB Holding Coil 72HC
54X Rectifier DCCB Closing Coil Contactor 72X
54Y Rectifier DCCB Auxiliary Contactor for Device 54X
54Z Rectifier DCCB Single Close Relay 72Z
54ZA Auxiliary Relay for Device 54Z
55 Rectifier DCCB Control Fuse (1500V)
57 Rectifier Unit Ammeter Shunt 157R?
58 Rectifier Unit Ammeter 158?
59 Electrolysis Drainage Contactor Isolating Switch 159
60 Electrolysis Drainage Contactor 160
61 Tripling Transformer Rectifier Fans Contactor
62BU Backup Protection Timing Relay
63/1, 63/2 Air Flow Monitor
63A Air Flow Relay – Fan No 1
63B Air Flow Relay – Fan No 2
63T Air Flow Failure Timer Relay
64 AC Earth Leakage Relay 50N
64A DC Earth Leakage Relay 64A
64AX Auxiliary Relay for Device 64A
64B DC Earth Leakage – Interposing Relay
64BU AC Earth Leakage Backup Protection Relay
64C Screen Leakage Relay 64
64D AC Earth Leakage Relay – Down Line
64R Resistance for Device 64
64S DC Earth Leakage Relay Shunt
ELECTRICAL SPECIFICATION SUBSTATION EQUIPMENT, DEVICE AND WIRE
NAMING AND NUMBERING
MESP 000003-06 Version: 1 Effective from: 21st February 2017
L1-CHE-SPE-199
Approving Manager: Head of Engineering - Electrical Approval Date: 21/02/2017 Next Review Date: 21/02/2020 PRINTOUT MAY NOT BE UP-TO-DATE; REFER TO METRO INTRANET FOR THE LATEST VERSION Page 32 of 44
Old Device
Number Device Description
Current Device Number
64U AC Earth Leakage Relay – Up Line
65 Grid Resistors
65C Grid Capacitor
65GT Grid Transformer
65R Grid Resistors
65RI Grid Loading Resistors
66 Indicating Light Switch
67 Rectifier Control (HT) Cubicle Light Switch 168
68 Rectifier Control (LT) Cubicle Light Switch 168
68A Rectifier Thermostat Silicon Rectifier 23
68B Rectifier Thermostat
68TY Over Temperature Trip Relay
69 Excitation Interlock Relay
70 Excitation Transformer (Tanks 1 & 2)
70CH Excitation Chokes
70EX Excitation Transformer
70Ign. Ignition Transformer
71 Surge Fuse Isolating Transformer -
72 Contactor for Rectifier Heater
72 Surge Fuse Auxiliary Relay 172
73 Excitation Choke Coil
73FL Load – Resistor Contactor for Filter Circuit
75 Anode Chokes
76 Current Relay for Fan Failure Alarm
80G Arc Suppression Contactor
81 Isolating Switch (Thermal) for ACCB Motor Mechanism
83 Current Relay for Fan Failure Tripping Circuit
83I Isolating Transformer for Device 83
83RX Shunt Resistor for Device 83
83S Shunt for Device 83
83X Auxiliary Relay for Device 83
ELECTRICAL SPECIFICATION SUBSTATION EQUIPMENT, DEVICE AND WIRE
NAMING AND NUMBERING
MESP 000003-06 Version: 1 Effective from: 21st February 2017
L1-CHE-SPE-199
Approving Manager: Head of Engineering - Electrical Approval Date: 21/02/2017 Next Review Date: 21/02/2020 PRINTOUT MAY NOT BE UP-TO-DATE; REFER TO METRO INTRANET FOR THE LATEST VERSION Page 33 of 44
Old Device
Number Device Description
Current Device Number
85 Frequency Tripling Transformer Fuse Trip Indicator
86 Lock-Out Relay 86
86A Auxiliary Relay for Device 86
86X Supervisory Alarm Indication Relay
87 Anode Fuse Trip Indicator
87A First Diode Failure Relay
87AX First Diode Failure Auxiliary Relay
87B Second Diode Failure Relay
87BX Second Diode Failure Auxiliary Relay
87C Diode Failure Indication Ammeter
87P Diode Failure Indication Reset Push Button
87S Diode Failure Indication Switch
87XT Control Supply Time Delay Relay
88 Rectifier Fan Contactor
88F Fan Motor (Tanks 1 & 2)
88R Fan Motor Fixed Reactor
88S Fan Motor Full Speed Contactor
88T Fan Failure Time Delay Tripping Relay (with Flag)
88Y Rectifier Fan Motor Contactor Control Relay
89 Rectifier DC Isolator 89
90 AC Overload Relay
90L AC Leakage Relay
91 Insulating Transformer
92 1500V Bus Protection Relay
93A Current Transformer – Rectifier Protection 193A
93B Current Transformer – Bus or Feeder Protection 193A/193B
94 Rectifier ACCB Single Close Relay 52Z
94A AC & DCCBs Intertripping Relay 94A
94B Section DCCB Tripping Relay 94B
94C Intertrip Relay – Jolimont-Angliss Feeder
94D Intertrip Relay – HV & LV ACCB (Cremorne) 94
ELECTRICAL SPECIFICATION SUBSTATION EQUIPMENT, DEVICE AND WIRE
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MESP 000003-06 Version: 1 Effective from: 21st February 2017
L1-CHE-SPE-199
Approving Manager: Head of Engineering - Electrical Approval Date: 21/02/2017 Next Review Date: 21/02/2020 PRINTOUT MAY NOT BE UP-TO-DATE; REFER TO METRO INTRANET FOR THE LATEST VERSION Page 34 of 44
Old Device
Number Device Description
Current Device Number
94F Intertrip Relay with Flag
94X Auxiliary Relay for Device 94
95 Series Reactor
96 Grid Control Transformer
96P Phase Shifting Transformer
97 Resonant Shunt (Filter Equipment)
97FF Resonant Shunt Fuse Failure Switch
97R Discharge Resistor for Device 97
98 Anode Surge Arrestors (Tanks 1 & 2)
98A Anode Surge Diverter – Voltage Oscillation Suppression Type
99 Cathode Surge Arrestors (Tanks 1 & 2)
100 DC Surge Arrestor
101 Excitation Surge Arrestor
102 ACCB Feeder Bus Isolator
103 AC Feeder Line Isolator 89L
103BC Solenoid Brake for Power Operated Device 103
103CS Remote Control Switch for Power Operated Device 103
103M Operating Motor for Power Operated Device 103
103MX Closing Relay for Power Operated Device 103
103MY Opening Relay for Power Operated Device 103
103R Series Resistance for Power Operated Device 103BC
104B Feeder DCCB Master Contactor – Bus
104BH Feeder DCCB Master Contactor – Bus (1500V)
104BL Feeder DCCB Master Contactor – Line (1500V)
104L Feeder DCCB Master Contactor – Line
105 Bus Tie ACCB Isolator
108 Feeder ACCB Control Supply Switch
109 Signal Supply 2200V CB or Vacuum Contactor (From Transformer or Frequency Changer)
52
109CC Closing Coil for Device 109 52CC
109CCIS Isolating Switch for Device 109
ELECTRICAL SPECIFICATION SUBSTATION EQUIPMENT, DEVICE AND WIRE
NAMING AND NUMBERING
MESP 000003-06 Version: 1 Effective from: 21st February 2017
L1-CHE-SPE-199
Approving Manager: Head of Engineering - Electrical Approval Date: 21/02/2017 Next Review Date: 21/02/2020 PRINTOUT MAY NOT BE UP-TO-DATE; REFER TO METRO INTRANET FOR THE LATEST VERSION Page 35 of 44
Old Device
Number Device Description
Current Device Number
109CR Circuit Reset Timing Relay for Device 109
109CS Control Switch for Device 109 52CS
109RC Diverter Resistor – 1000 Ohm Closing Coil
109RT Diverter Resistor – 800 Ohm Trip Coil
109SR Synchronising Auxiliary Relay for Device 109
109ST Synchronising Timing Relay for Device 109
109TC Trip Coil for Device 109 52TC
109TI Closing Relay for Device 109 52TI
109TO Tripping Relay for Device 109 52TO
109X Closing Coil Contactor for Device 109
109Z Anti-Pumping Relay for Device 109 52Z
110 Signal Feeder CB (2200V) (From Distribution Bus) 52
110CC Signal Feeder CB (2200V) Closing Coil 52CC
110TC Signal Feeder CB (2200V) Trip Coil 52TC
111 Signal Bus CB (2200V) (Supply from Distribution Bus) 52
112 Signal Bus Tie Isolator (2200V)
113 2200V Earth Leakage Indicator 64/R, 64/W
113R 2200V Earth Leakage Indicator Resistor
114 2200V Signal Supply Voltmeter 136
115 Signal Transformer
117 Isolator for Resonant Shunts
118 Signal Transformer Switch Fuse
120 Series Reactor – Air Cored
121 Surge Diverter
123 AC Bus Link
124 AC Bus Section Isolator
124CS AC Bus Section Isolator Control Switch
124MX Auxiliary Close Relay for Device 124
124MY Auxiliary Open Relay for Device 124
125 Feeder ACCB Heater 123
ELECTRICAL SPECIFICATION SUBSTATION EQUIPMENT, DEVICE AND WIRE
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MESP 000003-06 Version: 1 Effective from: 21st February 2017
L1-CHE-SPE-199
Approving Manager: Head of Engineering - Electrical Approval Date: 21/02/2017 Next Review Date: 21/02/2020 PRINTOUT MAY NOT BE UP-TO-DATE; REFER TO METRO INTRANET FOR THE LATEST VERSION Page 36 of 44
Old Device
Number Device Description
Current Device Number
126 Feeder ACCB Heater Switch 123CS
127 Feeder AC Line Alive Indicating Relay 27
136 AC Feeder Voltmeter 136
140 2200/110V Bus Alive & Phase Earth Indication VT 141
141 AC Feeder VT 141
142 2200/110V Line Earthed & Line Alive Indicating Transformer
149 Substation Fan Thermostat 23
149X Auxiliary Relay for Low-Setting Thermostat
152 Feeder ACCB 52
152CC Feeder ACCB Closing Coil 52CC
152CCR Feeder ACCB Closing Coil Disc……?
152CS Feeder ACCB Local Control Switch 52CS
152H Feeder ACCB Limit Switch on Siemens (Cremorne)
152M Feeder ACCB Spring Rewind Motor 52M
152MX Feeder ACCB Rewind Motor Control/contactor?
152N Neutral-Earth Relay for 22/6.6kV Transformers 64
152S Feeder ACCB Closing Spring Limit Switch 52S
152T Feeder ACCB Time Delay Relay
152TC Feeder ACCB Trip Coil 52TC
152TI Feeder ACCB Trip-in Closing Coil 52TI
152TO Feeder ACCB Trip-out Closing Coil 52TO
152TS Feeder ACCB Test Switch 52TS
152TSI Feeder ACCB Test Switch Isolator
152W Feeder ACCB Limit Switch – Opens when win……………..Siemens
152X Feeder ACCB Closing Coil R….
153 Bus Tie ACCB 52
153CC Bus Tie ACCB Closing Coil 52CC
153CCR Bus Tie ACCB Closing Coil ?????
153CS Bus Tie ACCB Local Control Switch 52CS
153H Bus Tie ACCB Limit Switch on Truck Handle………..Siemens (Cremorne)
ELECTRICAL SPECIFICATION SUBSTATION EQUIPMENT, DEVICE AND WIRE
NAMING AND NUMBERING
MESP 000003-06 Version: 1 Effective from: 21st February 2017
L1-CHE-SPE-199
Approving Manager: Head of Engineering - Electrical Approval Date: 21/02/2017 Next Review Date: 21/02/2020 PRINTOUT MAY NOT BE UP-TO-DATE; REFER TO METRO INTRANET FOR THE LATEST VERSION Page 37 of 44
Old Device
Number Device Description
Current Device Number
153M Bus Tie ACCB Spring Rewind Motor 52M
153S Bus Tie ACCB Closing Spring 52S
153T 11kV Bus Tie / 415V ACCB Intertripping Relay…… Flinders St 94
153TC Bus Tie ACCB Trip Coil 52TC
153TI Bus Tie ACCB Trip-In Closing Coil 52TI
153W Bus Tie ACCB Limit Switch – opens when Wind………Siemens
153X Bus Tie ACCB Closing Coil ??????
153TO Bus Tie ACCB Trip-out Closing Coil 52TO
154 Section DCCB 72
154CC Section DCCB Closing Coil 72CC
154CS Section DCCB Local Control Switch 72CS
154HC Feeder DCCB Holding Coil 72HC
154X Feeder DCCB Closing Coil Contactor 72X
155 Feeder DCCB Zone Control Supply Isolator
156 DC Zone Isolators
157 Rectifier DC Bus Section Isolator
158 AC Feeder Ammeter 158?
159 DC Feeder Bus Isolator 89B
160 DC Feeder Line Isolator 89L
161 AC Feeder Translay Relay 87L
161A AC Feeder Translay Quadrature Transformer
162C AC Feeder Combined Digital Protection Relay 11
162 AC Feeder O.C.I.T.E.R. (3 Relays in 1 Case)
162D Directional Relay 67
162DX Directional Protection Auxiliary Relay
162EL AC Feeder O.C.I.T Relay (Earth Leakage) 51N
162ELA AC Feeder Earth Leakage Relay Shorting Contacts
162ELT AC Feeder O.C.I.T. Relay Earth Leakage Timing Element
162F Overcurrent & Earth Leakage Auxiliary Flag Relay
162HL Feeder Protection High Setting – Lower Setting Changeover Relay (NME)
ELECTRICAL SPECIFICATION SUBSTATION EQUIPMENT, DEVICE AND WIRE
NAMING AND NUMBERING
MESP 000003-06 Version: 1 Effective from: 21st February 2017
L1-CHE-SPE-199
Approving Manager: Head of Engineering - Electrical Approval Date: 21/02/2017 Next Review Date: 21/02/2020 PRINTOUT MAY NOT BE UP-TO-DATE; REFER TO METRO INTRANET FOR THE LATEST VERSION Page 38 of 44
Old Device
Number Device Description
Current Device Number
162IEL Instantaneous Earth Leakage Relay 50N
162IELX Auxiliary Relay for Device 162IEL
162OC AC Feeder O.C.I.T Relay (Overcurrent) 51
162OC/H AC Feeder O.C.I.T. Relay (Overcurrent) High Setting (NME)
162OC/L AC Feeder O.C.I.T. Relay (Overcurrent) Low Setting (NME)
162OCA AC Feeder Overcurrent Relay Shorting Contacts
162X Overcurrent & Earth Leakage Auxiliary Relay
163 AC Bus Protection Overload Relay (Summation) 163
163A AC Bus Overload Relay Shorting Contacts
163R Time Delay Relay for Rectifier Protection O/C Relay
163T Time Delay Relay for Bus Protection O/C Relay
163X Auxiliary relay for Device 163
164 AC Frame Leakage Relay 64
164A AC Frame Leakage Relay Shorting Contacts
164C AC Frame Leakage CT
165 AC Bus Protection Differential Relay 87B
165A AC Bus Residual Differential Protection Relay Shorting Contacts
165EL/1 Earth Leakage Differential Relay on Bus 1
165EL/2 Earth Leakage Differential Relay on Bus 2
165X Auxiliary Relay for Device 165
166 Feeder ACCB Indicating Lamp Switch 166
167 Feeder ACCB Cubicle Light Switch 168
168 Bus tie Isolator Indicating Light Key
169 AC Bus Section Isolator Lockout Contact
170 AC Protection Tripping Relay
171 Control Circuit Isolator – AC Bus Tie Isolator
172 Motor Circuit Isolator – AC Bus Tie Isolator
175 Signal CB Control Supply
176IX 2200V Feeder ACCB Instantaneous Overload Relay (NKT)
176OC 2200V Feeder ACCB Overload Relay (O.C.I.T.) (NKT)
177IOC 2200V Transformer Instantaneous Overload Relay (NKT)
ELECTRICAL SPECIFICATION SUBSTATION EQUIPMENT, DEVICE AND WIRE
NAMING AND NUMBERING
MESP 000003-06 Version: 1 Effective from: 21st February 2017
L1-CHE-SPE-199
Approving Manager: Head of Engineering - Electrical Approval Date: 21/02/2017 Next Review Date: 21/02/2020 PRINTOUT MAY NOT BE UP-TO-DATE; REFER TO METRO INTRANET FOR THE LATEST VERSION Page 39 of 44
Old Device
Number Device Description
Current Device Number
178 2200V Feeder ACCB Blocking Relay (NKT)
183 Protection VT – Feeder ACCB 141
184 Protection VT (Earth Leakage) – Feeder ACCB
188 Substation Fan Motor Contactor
188A Substation Fan Failure Indication Relay
188B Auxiliary Relay for Device 188
188BH Substation Fan Control Auxiliary Relay (High Setting)
188BL Substation Fan Control Auxiliary Relay (Low Setting)
188F Substation Fan Motor
188PS Substation Fan Power Supply Switch
188S Substation Fan Control Supply Switch
193A Feeder Current Transformer (Feeder Protection) 193A
193B Feeder Current Transformer (Bus Protection) 193B
193C Feeder Current Transformer (SEC Protection) 193C
193D Feeder Current Transformer (SEC Metering) 193D
194 Feeder DCCB Single Closing Relay 72Z
194T Feeder DCCB Timing Relay for Device 194
194X Feeder DCCB Auxiliary Relay for Device 194
195 Feeder ACCB Plug Interlock Contact
203 50V DC Supply Check Relay (FSS,SSS)
206 Auxiliary Transformer 415V CB ‘Close’ Interposing Relay 206
207 Auxiliary Transformer 415V CB ‘Open’ Interposing Relay 207
208 Supervisory ‘ON’ Interposing Relay (Electrolysis) 208
209 Supervisory ‘OFF’ Interposing Relay (Electrolysis) 209
210 Supervisory ‘START’ Interposing Relay (Rectifier) 210
211 Supervisory ‘STOP’ Interposing Relay (Rectifier) 211
212 Feeder DCCB ‘CLOSE’ Interposing Relay 212
212B Feeder DCCB ‘CLOSE’ Interposing Relay – Bus 212B
212BL Feeder DCCB ‘CLOSE’ Interposing Relay – Bus or Line 212BL
212BLX Auxiliary Contactor for Device 212BL 212BLX
212L Feeder DCCB ‘CLOSE’ Interposing Relay - Line 212L
ELECTRICAL SPECIFICATION SUBSTATION EQUIPMENT, DEVICE AND WIRE
NAMING AND NUMBERING
MESP 000003-06 Version: 1 Effective from: 21st February 2017
L1-CHE-SPE-199
Approving Manager: Head of Engineering - Electrical Approval Date: 21/02/2017 Next Review Date: 21/02/2020 PRINTOUT MAY NOT BE UP-TO-DATE; REFER TO METRO INTRANET FOR THE LATEST VERSION Page 40 of 44
Old Device
Number Device Description
Current Device Number
213 Feeder DCCB ‘OPEN’ Interposing Relay 213
213B Feeder DCCB ‘OPEN’ Interposing Relay – Bus 213B
213BL Feeder DCCB ‘OPEN’ Interposing Relay – Bus or Line 213BL
213L Feeder DCCB ‘OPEN’ Interposing Relay – Line 213L
214 Feeder ACCB ‘CLOSE’ Interposing Relay 214
215 Feeder ACCB ‘OPEN’ Interposing Relay 215
216 Signal CB ‘CLOSE’ Interposing Relay 216
217 Signal CB ‘OPEN’ Interposing Relay 217
218 Auxiliary Transformer 230V CB ‘CLOSE’ Interposing Relay 218
219 Auxiliary Transformer 230V CB ‘OPEN’ Interposing Relay 219
220 AC Bus Section Isolator or Bus Tie ACCB ‘CLOSE’ Interposing Relay 220
221 AC Bus Section Isolator or Bus Tie ACCB ‘OPEN’ Interposing Relay 221
223 2200V Supply Alive Indication Interposing Relay
224 20kV Changeover Relay for ST Alive Indication
225 ST1 20kV VT Isolator Switch
226 ST2 20kV VT Isolator Switch
227 Isolator Switch for Battery Charger
228 110V Rectifier ACCB Trip & Close Circuit Supply Check Relay (VPK)
229 Heater Supply Isolator Switch
230 Supervisory Isolator Switch 230
231 Thyristor Fuse Failure Relay
232 Electrolysis Feeder Discontinuity Relay
235 2200V Bus Alive Indication Relay 27
236 SEC Supply Alive Indication Relay 27
252 HV ACCB for Signal Transformer and Frequency Changer 52
252A Auxiliary Relay for Device 252 52X
252BU Backup Protection Relay for Device 252
252CS Control Switch for Device 252 52CS
252LR Local Remote Switch for Device 252 52LR
ELECTRICAL SPECIFICATION SUBSTATION EQUIPMENT, DEVICE AND WIRE
NAMING AND NUMBERING
MESP 000003-06 Version: 1 Effective from: 21st February 2017
L1-CHE-SPE-199
Approving Manager: Head of Engineering - Electrical Approval Date: 21/02/2017 Next Review Date: 21/02/2020 PRINTOUT MAY NOT BE UP-TO-DATE; REFER TO METRO INTRANET FOR THE LATEST VERSION Page 41 of 44
Old Device
Number Device Description
Current Device Number
252TCX Trip Coil Control Relay for Device 252
252TOX Trip Out Control Relay for Device 252
253 2200V Bus Tie CB or Vacuum Contactor 52
253CC 2200V Bus Tie CB or Vacuum Contactor Closing Coil 52CC
253CS 2200V Bus Tie CB or Vacuum Contactor Control Switch 52CS
253RC Diverter Resistor 1000 Ohm Closing Coil
253RT Diverter Resistor 800 Ohm Trip Coil
253TC 2200V Bus Tie CB or Vacuum Contactor Trip Coil 52TC
253X 2200V Bus Tie CB or Vacuum Contactor Closing Coil Contactor
253Z 2200V Bus Tie CB or Vacuum Contactor Anti-Pumping Relay
254 Subsectioning Switch
254CC Subsection Switch Closing Coil
254CS Subsection Switch Local Control Switch
254RCS Subsection Switch Remote Control Switch
254T Subsection Switch Closing Coil Timer
254TC Subsection Switch Trip Coil
254X Trip Coil Contactor
262 Signal Transformer O/C Relay 51
262C Signal Transformer Digital Protection Relay 11
270 Sump Pump
275 Supervisory Supply Switch 275
280 Supervisory Cable Low Pressure Alarm Relay
291 Supervisory Cable Low Pressure Gas Relay
302 Auxiliary Supply Bus Isolator
305 Cubicle Light Supply Switch (also 373)
306 Emergency Light Supply Switch or Relay
308 Auxiliary Supply Isolator for Rectifier Control
311 Auxiliary Transformer 230V CB Closing Supply Switch
315 Auxiliary Transformer
316 Rectifier Control Supply Step-up Transformer
317 Rectifier Control Supply Switch 317
ELECTRICAL SPECIFICATION SUBSTATION EQUIPMENT, DEVICE AND WIRE
NAMING AND NUMBERING
MESP 000003-06 Version: 1 Effective from: 21st February 2017
L1-CHE-SPE-199
Approving Manager: Head of Engineering - Electrical Approval Date: 21/02/2017 Next Review Date: 21/02/2020 PRINTOUT MAY NOT BE UP-TO-DATE; REFER TO METRO INTRANET FOR THE LATEST VERSION Page 42 of 44
Old Device
Number Device Description
Current Device Number
318 Auxiliary Transformer 22kV Switch Fuse
319 Signal Transformer 22kV Switch Fuse
323 Vent Fan Contactor
324 Auxiliary Supply Bus Section Isolator
326 110V Low Battery Voltage Relay
326A Low Battery Voltage Auxiliary Relay
326R 110V Low Battery Voltage Relay Resistor
327 230V Bus – Alive Indication Relay
328 Power & Light Supply Main Switch 328
329 Power & Light Supply Switch
330 Power & Light Supply Switch
331 230V, 3 Phase, Supply Switch
332 415V, 3 Phase, Supply Switch
333 110V Battery Charger Supply Switch
334 50V Battery Charger Supply Switch
335 Burnley Substation Air Compressor Main Switch (Thermal Overload)
336 Air Compressor Control Unit
337 Air Compressor Control Unit Circuit Breaker
338 Air Compressor Motor
339 Air Compressor Relief Valve
340 Air Compressor Counter
341 Air Compressor Pressure Switch
342 Air Compressor Changeover Switch
343 22kV ACCB Closing Coil Supply Switch
344 Air Compressor Supervisory Reset Push Button
345 Air Compressor Trip Coil Release Switch
346 Air Compressor LP & HP Tripping Relay
347 Air Compressor Control Supply Automatic Changeover Relay
349 Ventilation Fan Thermostats
350 Ventilation Fan Control Switch
ELECTRICAL SPECIFICATION SUBSTATION EQUIPMENT, DEVICE AND WIRE
NAMING AND NUMBERING
MESP 000003-06 Version: 1 Effective from: 21st February 2017
L1-CHE-SPE-199
Approving Manager: Head of Engineering - Electrical Approval Date: 21/02/2017 Next Review Date: 21/02/2020 PRINTOUT MAY NOT BE UP-TO-DATE; REFER TO METRO INTRANET FOR THE LATEST VERSION Page 43 of 44
Old Device
Number Device Description
Current Device Number
352 Auxiliary Transformer ACCB 52
352A Auxiliary Transformer ACCB Anti-pumping Relay 52Z
354 Auxiliary Supply 230V Contactor
354CS Device 354 Control Switch
355 Auxiliary Supply 230V Circuit Breaker
355CS Device 355 Control Switch
356 110V Supplies Earth Leakage Test Switch
357 110V Battery Charger Output Changeover Switch
358 Substation Ammeter Shunt
359 110V Standby Battery Charger Plug (230V AC Supply)
360 110V Standby Battery Charger Plug (110V DC Supply)
362C Auxiliary Transformer 22kV Digital Protection Relay 11
362 Auxiliary Transformer 22kV ACCB O.C.I.T.E.R 50/51/50N
371 Auxiliary Transformer 230V CB Control Supply Switch
373 Cubicle Light Supply Switch 168
375 Rectifier DCCB Control Supply Switch
376 Section DCCB Zone Control Supply Switch
377 Rectifier & Feeder DCCB Closing Coil Supply Switch
378 Rectifier & Feeder DCCB Closing Coil Supply Switch
379 Rectifier & Feeder ACCB Control Supply Switch
380 Rectifier & Feeder ACCB Control Supply Switch
390 Commutation Surge Suppressor
401 Thyristor Unit AC Supply Contactor
402 Thyristor Unit Contactor Control Switch
410 50V Rectifier Control Switch
411 Humidity Indication Device
422 2200V Overvoltage Relay
425 Synchrotact Relay
425C Synchrotact Synchronising Contactor
425SS Selector Switch for Device 425
426 2200V 90% Voltage Relay
ELECTRICAL SPECIFICATION SUBSTATION EQUIPMENT, DEVICE AND WIRE
NAMING AND NUMBERING
MESP 000003-06 Version: 1 Effective from: 21st February 2017
L1-CHE-SPE-199
Approving Manager: Head of Engineering - Electrical Approval Date: 21/02/2017 Next Review Date: 21/02/2020 PRINTOUT MAY NOT BE UP-TO-DATE; REFER TO METRO INTRANET FOR THE LATEST VERSION Page 44 of 44
Old Device
Number Device Description
Current Device Number
427 2200V Under Voltage Relay
429 415V Supply Circuit Breaker
430 415V Supply Circuit Breaker Test Switch
451 415V AC Open Circuit Relay for Frequency Changers
454 415V Auxiliary Supply ACCB
454A 415V Auxiliary Supply Auxiliary Relay
454CS 415V Auxiliary Supply Control Switch
454M 415V Auxiliary Supply Closing Motor
454T 415V Auxiliary Supply Control Supply Transformer
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