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1/10

Q1: Load break switch Q2: Earthing switch

Q3: Load break switch with fuses EFI: Earth Fault Indicator ()

H1: Hygrostate H2: Heater

T1: Single pole potential transformer T2: Current transformer

P1: Voltmeter P2: kWh meter + kVARh meter (*)

S1: Voltmeter selector switch F1: H.R.C fuse

X1: Mechanical interlock

LBS X2: Mechanical interlock

LBS LBS

c.d

Capacitor divider unit with neon lamp )*( by electricity company

( 1-1)( :)

*

) ( :

11/1

() . 22 ): 2-1 (

GNIOGTUO GNIOGTUO GNIMOCNI RELPUOC - SUB

) ( :

21/1

resiR suB :

() . 22 ): 2-1 (

RESIR - SUB GNIMOCNI GNIOGTUO GNIOGTUO

) ( :

31/1

): 3-1 (

: ( )

1/14

PART LIST DESCRIPTION SYMB.

SF6 OR VACUUM CIRCUIT BREAKER WTHDRAWABLE / DRAWOUT TYPE COMPLETE WITH:

SPRING CHARGING MOTOR 110 VDC

SHUNT CLOSING COIL 110 VDC

SHUNT TRIPPING COIL 110 VDC

BLOCKING COIL 110 DVC

PRESSURE SWITCH

4-POLE AUXILIARY SWITCH

RATED VOLTAGE 24 KV

RATED CURRENT 1250A

BREAKING CAPACITY 25KA

Q1

EARTHING SWITCH Q4 CURRENT TRANSFORMER (400-800/5/5)A

CORE 1-15VA CL. 0.5M5

CORE 2-20VA CL. 5P10

1TH = 25 KA, 24 KV

T1

CURRENT TRANSFORMER (100-200/5/5)A & (200-400/5/5) A

CORE 1-10VA CL. 0.5M5

CORE 2-15VA CL. 5P10

1TH = 25 KA, 24 KV

T2

DITTO BUT WITH SCALE: (400-800/5/5)A T3 WITHDRAWABLE SINGLE PHASE POTENTIAL

TRANSFORMER WITH PROTECTION FUSE (MAY BUILT IN FUSE) WITH

SUITABLE RATING

V3

110/

3

110/

3

22000

CL. (0.5-3P) & (50-100) VA

T10

3 PH. OVER CURRENT

SHORT CIRCUIT & E.F RELAY

RATED CURRENT 5A

AUX. VOLTAGE : 110 VDC

F 50/51/51N

FEEDER TERMINAL UNIT FOR PROTECTION FUNCTIONS:

- DIRECTIONAL OVER CURRENT

- DIRECTIONAL EARTH FAULT

- NON-DIRECTIONAL OVER CURRENT

- NON-DIRECTIONAL EARTH FAULT

AUX. VOLTAGE : 110 VDC

F67/67N/50/51N (*)

AMMETER WITH SCALE : (0-400/1200) A

RATIO (400-800/5) A P1 AMMETER WITH SCALE : (0-200/600) A

& (0-100/300) A

RATIO (100-200/5) A & (100-200/5) A P2

DITTO BUT SCALE : (0-400/1200) A

RATIO (400-800/5) A P3 VOLTMETER WITH SCALE (0-24) KV

RATIO = 22000/110 V P10 3PH. 4WIRE DIGITAL KW.H & KVAR.H METER

CLASS 1 : KW.H , CLASS 2 : KVAR.H P13 * / 2

/ 4 . ( F50/51/51N.)

: ( )

1/15

DESCRIPTION SYMB. PUSH BUTTON FOR C.B CLOSING S 1 PUSH BUTTON FOR C.B OPENING S 2 MUSHROOM PUSH BUTTON FOR HORN S 30 VOLTMETER SELECTOR SWITCH S 10 INDICATION LAMP FOR C.B CLOSED H1 INDICATION LAMP FOR C.B OPENING H2 INDICATION LAMP FOR C.B TRIPPED H3 PROGRAMMABLE ALARM ANNUNCIATOR UNIT WITH 16 ALARM CHANNEL

FOR LOW GAS & INSUFFICENT GAS ALARM), DC LOSS, 220V AC LOSS & ANY

PROTECTION RELAY TRIP H4

LEFT SECTION H5

RIGHT SECTION POSITION INDICATOR FOR C.B. H6 POSITION INDICATOR FOR E.S. H7 FLAG RELAY FOR DC LOSS

110VDC TYPE MR 21 H8 FLAG RELAY FOR AC LOSS MR 21 - 110 VAC H9 HORN 220 V AC or 110 V DC IF AVAILABLE H30 SPACE HEATER 220 VAC , WATTAGE AS SPECIFIED H10 HYGROSTAT H20 MIMIC DIAGRAM MD SET OF CAPACITOR DIVIDER WITH LAMPS Cd SURGE ARRESTOR 24 kV - 10 kA SA

)(

) ( :

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. . , 6002/6881 -31 .5002/8881 -41 5002/10-2810 -51

.: 1 057/054 5002/20-2810 -61

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5002/10-123 -14 .: 1

5002/20-123 -24 .: 3

5002/30-123 -34 .: 3

5002/8340 -44 .

5002/6432 -54 . ()

5002/7432 -64 .

3991/5042 -74 .

3991/7042 -84 . ) 6002/1-16CEI (

5002/8382 -94 . ()

5002/6992 -05 . 52

5002/4853 -15 .( )

5002/5853 -25 . ) (

5002/8393 -35 .

3002/8393 -45 .

: ( )

1/79

55- 4111/2005 ) ( .

56- IEC 227 (Poly vinyl chloride)-insulated cables of rated voltages up to and

including 450/750 V:

227 -1 Part 1 General requirements 227-2 Part 2 Test methods 227-3 Part 3 Non-sheathed cables for fixed wiring 227-4 Part 4 Sheathed cables for fixed wiring 227-5 Part 5 Flexible cables (cords) 227-6 Part 6 Lift cables and cables for flexible connections

57- IEC 245 Rubber-insulated cables of rated voltages up to and including

450/750 V

245-1 Part 1 General requirements 245-2 Part 2 Test methods 245-3 Part 3 Heat-resisting silicone-insulated cables 245-4 Part 4 Cords and flexible cables 245-5 Part 5 Lift cables 245-6 Part 6 Arc welding electrode cables

58- IEC 502 Extruded solid dielectric insulated power cables for rated voltages

from 1 kV to 30 kV

59- IEC 702 Mineral insulated cables and their terminations with a rated

voltage not exceeding 750 V

702-1 Part 1 Cables 702-2 Part 2 Terminations

60- IEC 173 Colours of the cores of flexible cables and cords

61- IEC 391 Marking of insulated conductors

62- IEC 446 Identification of insulated and bare conductors by colour

63- IEC 60 High voltage test techniques:

60-1 Part 1 General definitions and test requirements 60-2 Part 2 Test procedures 60-3 Part 3 Measuring devices 60-4 Part 4 Application guide for measuring devices

64- IEC 229 Tests on cable oversheaths which have a special protective

function and are applied by extrusion

65- IEC 230 Impulse tests on cables and their accessories

66- IEC 270 Partial discharge measurements

67- IEC 332 Tests on electric cables under fire conditions:

332-1 Part 1 Test on a single vertical insulated wire or cable 332-3 Part 3 Tests on bunched wires or cables

68- IEC 538 Electric cables, wires and cords: methods of test for polyethylene

insulation and sheath

69- IEC 540 Test methods for insulation and sheaths of electric cables and

cords (elastomeric and thermoplastic compounds)

70- IEC 811 Common test methods for insulating and sheathing materials of

electric cables

: ( )

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811-1 Part 1 Methods for general application 811-2 Part 2 Methods specific to elastomeric compounds 811-4 Part 4 Methods specific to polyethylene and polypropylene compounds

(The several parts of IEC 811 are themselves subdivided into

sections, e.g. 811-1-1, 811-1-2, 811-2-1, with certain groups of

test methods in each section. Part 3 is reserved for methods

specific to PVC compounds)

71- IEC 815 Electrical test methods for electric cables

8152 Part 2 Partial discharge tests (When all parts of IEC 811 and IEC 815 have been completed

they will replace IEC 538 and IEC 540)

72- IEC 71 Insulation co-ordination

71-1 Part 1 Terms, definitions, principles and rules 71-2 Part 2 Application guide 71-3 Part 3 Phase-to-phase insulation co-ordination: principles, rules and application guide

73- IEC 287 Calculation of the continuous current rating of cables (100% load

factor)

74- IEC 364 Electrical installations of buildings. This has a number of parts,

which are subdivided into chapters, and sections, of which some

have a bearing on cables; the following, which supersedes IEC

448, is particularly relevant:

364 5 523 Part 5 Selection and erection of electrical equipment

Chapter 52 Wiring systems

Section 523 Current carrying capacities

75- IEC 724 Guide to the short-circuit temperature limits of electric cables

with a rated voltage not exceeding 0.6/1.0 kV