PROVN OF RMU IN LIEU OF 4 POLE/ 2 POLE STRUCTURE UNDER GE(WEST) JABALPUR

EXTERNAL ELECTRIC SUPPLY

Item No. 01 : Supply, installation, commissioning and testing of 12 kV SF6 Ring Main Unit, compact, out door type, 630 Amps, rated capacity 21 kA for 1 sec having 1 vacuum circuit breaker (VCB) insulated in SF6, two load break switch (LBS) insulated in SF6 and one Bus PT panel extensible to right side RMU/ Outdoor, motorised having metering panel and copper bus bar of suitable ampere ratings complete with and including the followings:- Notes: (i) Brief description of this item is "12 kV, SF6 Ring Main Unit complete with 1 Vacuum Circuit Breaker + 2 LBS+ 1 Bus PT Panel (Right side extensible / OUTDOOR). FBX-RE/12-21/ M+CT2T2 /OUTDOOR - MOTORIZED". (ii) As per manufacturer's design, cost of making of platform shall be deemed to be included in unit quoted rates. (iii) All necessary arrangements for performance testing of RMU shall be made by contractor without any extra cost to the Government.

(A) HT COMPARTMENT: VACUUM CIRCUIT BREAKER - Each module (Vacuum circuit breaker) enclosed in SF6 -01 Nos. (a) The function unit shall consist of a three position switch. The three position switch shall fulfil the operation of the disconnector function and the earthing function. The circuit breaker unit T2 shall be equipped with an over current time release for the protection of distribution transformer. (b) Vacuum circuit breaker shall be of 12kV, 630 Amps, 21 kA for one sec enclosed in SF6. (c) Spring assisted closing with stored energy tripping mechanism for T2-motorised operation with integrated earthing switch. (d ) Having auxiliary contacts on load break switch 1 NO+2 NC & auxiliary contacts on earth switch 1 NO+1 NC - 01 No. (e) Self powered electronic numerical protection relay providing 3 over current & 1 earth fault protection - 01 No. (f) Tape wounded protection CT shall be 100/5, 10P5, 2.5VA - 03 Nos. (g) Tape wounded metering CT shall be 100/5, Class-1.0, 2.5 VA - 03 Nos. (h) Shunt trip Coil - 24 V DC - 01 No. (j) Capacitive voltage indication fixed type (LED display) - 01 No. (k) On/ Off/ TRIP mechanical indication on the front mimic of the panel-01 Set. (l) Cable box for termination of XLPE cable of size 3 core 95 sqmm to 185 sqmm aluminium conductor as suitable for site connection - 01 No. (m) Cable cover standard - 01 No. (n) Emergency trip push button- 01 No. (o) Set of 12 kV cable termination boots - 1 Set (p) Ammeter of suitable capacity/ class -01 No. (q) Rated frequency - 50 Hz

(r ) Rated Power frequency withstand voltage directly earthed -28 kV (s) Level of insulation for the SF6, rated lightening impulse withstand voltage - 75 kV (t) Level of insulation for the SF6, rated power frequency withstand voltage - 28 kV (u) Level of insulation of the sectionalized distance for the cable test energized busbar, maximum AC feeder test voltage - 18 kV (v) Rated current busbar C-R-RE functions - 630 Amps (w) Rated current busbar SB functions - 630 Amps (x) Rated current outgoing feeder- 630 Amps (y) Rated short time current, main electrical circuit for 1 Sec - 21kA (z) Rated short time current, earthing circuit for 1 Sec - 21kA (aa) Rated network load and closed loop breaking current - 630 Amps (ab) Rated no load cable breaking current -160 Amps (ac) Rated breaking current under earth fault conditions - 630 Amps (ad) Rated no-load cable breaking current under earth fault conditions - 277 Amps (B) HT COMPARTMENT: LOAD BREAK SWITCH- C, 12 kV, 21 kA, 630 Amps - EACH MODULE (LBS) enclosed in SF6 -02 No. (a) The switching unit shall be so designed as a three position switch. The three position switch combines the functions of switch disconnector and earthing switch. The switch disconnector as well as the earthing switch shall be equipped with a separate drive unit. (b) Cable switch 11 kV, 630 A, 21 kA for 1 sec - 01 No. (c ) Spring assisted mechanisim for C-manual operation with integrated earthing switch - 01 No. (d) Cable bushing 630 Amps, Standard C-bushings - 01 No.

(e) Aux switch for load break (ON & OFF) - 01 No. (f) Cable Cover standard - 01 No. (g) Capacitive voltage indication fixed type (LED display) - 01 No. (h) On/ Off/ EARTH indication on the front mimic of the panel - 01 Set. (j) Cable box for termination of XLPE cable of size 3 core 95 sqmm to 185 sqmm aluminium conductor as suitable for site connection - 01 No. (k) Operation counter - 01 No. (l) Cable boot suitable for 11 kV - 01 Set, cable entry shall be provided from front bottom (m) Rated frequency - 50 Hz (n ) Rated power frequency withstand voltage directly earthed -28 kV (o) Level of insulation for the SF6, rated lightening impulse withstand voltage - 75 kV (p) Level of insulation for the SF6, rated power frequency withstand voltage - 28 kV (q) Level of insulation of the sectionalized distance for the cable test energized busbar, maximum AC feeder test voltage - 18 kV (r) Rated current busbar C-R-RE functions - 630 Amps (s) Rated current busbar SB functions - 630 Amps (t) Rated current outgoing feeder- 630 Amps (u) Rated short time current, main electrical circuit for 1 sec - 21kA (v) Rated short time current, earthing circuit for 1 sec - 21kA (w) Rated network load and closed loop breaking current - 630 Amps (x) Rated no load cable breaking current - 160 Amps (y) Rated breaking current current under earth fault conditions - 630 Amps (z) Rated no-load cable breaking current under earth fault conditions - 277 Amps

(C) BUS METERING PANEL (a) 03 Single phase PT 11 kV/ RT3/ 110V/RT3, 100 VA, class -1.0 (b) 01 Space heater (c ) RYB indication - one set (d) 01 No. Voltmeter (e) Microprocessor based three phase electronic tamper proof HT energy meter with optical communication port, accuracy class 0.5 rating 3 X 110 V, 1/5 A conforming to IS : 13779. (f) 24 V DC battery and battery charger - 01 Set

Item No. 02 : Supply, installation, commissioning and testing of 12 kV SF6 Ring Main Unit, compact, out door type, 630 Amps, rated capacity 21 kA for 1 sec having 2 vacuum circuit breaker (VCB) insulated in SF6, one load break switch (LBS) insulated in SF6 and one Bus PT panel extensible to right side RMU/ Outdoor, motorised having metering panel and copper bus bar of suitable ampere ratings complete with and including the followings:- Notes: (i) Brief description of this item is "12 kV, SF6 Ring Main Unit complete with 2 Vacuum Circuit Breaker + 1 LBS+ 1 Bus PT Panel (Right side extensible / OUTDOOR). FBX-RE/12-21/ M+CT2T2 /OUTDOOR - MOTORIZED". (ii) As per manufacturer's design, cost of making of platform shall be deemed to be included in unit quoted rates. (iii) All necessary arrangements for performance testing of RMU shall be made by contractor without any extra cost to the Government.

(A) HT COMPARTMENT: VACUUM CIRCUIT BREAKER - Each module (Vacuum circuit breaker) enclosed in SF6 -02 Nos. (a) The function unit shall consist of a three position switch. The three position switch shall fulfil the operation of the disconnector function and the earthing function. The circuit breaker unit T2 shall be equipped with an over current time release for the protection of distribution transformer. (b) Vacuum circuit breaker shall be of 12kV, 630 Amps, 21 kA for one sec enclosed in SF6. (c) Spring assisted closing with stored energy tripping mechanism for T2-motorised operation with integrated earthing switch. (d ) Having auxiliary contacts on load break switch 1 NO+2 NC & auxiliary contacts on earth switch 1 NO+1 NC - 01 No. (e) Self powered electronic numerical protection relay providing 3 over current & 1 earth fault protection - 01 No. (f) Tape wounded protection CT shall be 100/5, 10P5, 2.5VA - 03 Nos. (g) Tape wounded metering CT shall be 100/5, Class-1.0, 2.5 VA - 03 Nos. (h) Shunt trip Coil - 24 V DC - 01 No. (j) Capacitive voltage indication fixed type (LED display) - 01 No. (k) On/ Off/ TRIP mechanical indication on the front mimic of the panel-01 Set. (l) Cable box for termination of XLPE cable of size 3 core 95 sqmm to 185 sqmm aluminium conductor as suitable for site connection - 01 No. (m) Cable cover standard - 01 No. (n) Emergency trip push button- 01 No. (o) Set of 12 kV cable termination boots - 1 Set (p) Ammeter of suitable capacity/ class -01 No. (q) Rated frequency - 50 Hz

(r ) Rated Power frequency withstand voltage directly earthed -28 kV (s) Level of insulation for the SF6, rated lightening impulse withstand voltage - 75 kV (t) Level of insulation for the SF6, rated power frequency withstand voltage - 28 kV (u) Level of insulation of the sectionalized distance for the cable test energized busbar, maximum AC feeder test voltage - 18 kV (v) Rated current busbar C-R-RE functions - 630 Amps (w) Rated current busbar SB functions - 630 Amps (x) Rated current outgoing feeder- 630 Amps (y) Rated short time current, main electrical circuit for 1 Sec - 21kA (z) Rated short time current, earthing circuit for 1 Sec - 21kA (aa) Rated network load and closed loop breaking current - 630 Amps (ab) Rated no load cable breaking current -160 Amps (ac) Rated breaking current under earth fault conditions - 630 Amps (ad) Rated no-load cable breaking current under earth fault conditions - 277 Amps (B) HT COMPARTMENT: LOAD BREAK SWITCH- C, 12 kV, 21 kA, 630 Amps - EACH MODULE (LBS) enclosed in SF6 -01 No. (a) The switching unit shall be so designed as a three position switch. The three position switch combines the functions of switch disconnector and earthing switch. The switch disconnector as well as the earthing switch shall be equipped with a separate drive unit. (b) Cable switch 11 kV, 630 A, 21 kA for 1 sec - 01 No. (c ) Spring assisted mechanisim for C-manual operation with integrated earthing switch - 01 No. (d) Cable bushing 630 Amps, Standard C-bushings - 01 No.

(e) Aux switch for load break (ON & OFF) - 01 No. (f) Cable Cover standard - 01 No. (g) Capacitive voltage indication fixed type (LED display) - 01 No. (h) On/ Off/ EARTH indication on the front mimic of the panel - 01 Set. (j) Cable box for termination of XLPE cable of size 3 core 95 sqmm to 185 sqmm aluminium conductor as suitable for site connection - 01 No. (k) Operation counter - 01 No. (l) Cable boot suitable for 11 kV - 01 Set, cable entry shall be provided from front bottom (m) Rated frequency - 50 Hz (n ) Rated power frequency withstand voltage directly earthed -28 kV (o) Level of insulation for the SF6, rated lightening impulse withstand voltage - 75 kV (p) Level of insulation for the SF6, rated power frequency withstand voltage - 28 kV (q) Level of insulation of the sectionalized distance for the cable test energized busbar, maximum AC feeder test voltage - 18 kV (r) Rated current busbar C-R-RE functions - 630 Amps (s) Rated current busbar SB functions - 630 Amps (t) Rated current outgoing feeder- 630 Amps (u) Rated short time current, main electrical circuit for 1 sec - 21kA (v) Rated short time current, earthing circuit for 1 sec - 21kA (w) Rated network load and closed loop breaking current - 630 Amps (x) Rated no load cable breaking current - 160 Amps (y) Rated breaking current current under earth fault conditions - 630 Amps (z) Rated no-load cable breaking current under earth fault conditions - 277 Amps