PROVN OF 11 KV VCB, SF6 (RMU) AND BUS COUPLER FOR VAIRANGTE STATION AT XXXXX UNDER GE SILCHAR

Supply, installation, testing and commissioning of Indoor arc flash protected Draw-Out with roll on floor type Vacuum Circuit Breaker Panel, rated for 11kV, 800 Amp, 26.3kA/3-sec, comprising of 02 No. Incomer, 01 No. Bus Coupler and 02 Nos. Outgoing VCB Panels and floor-mounted/ top mounted Bus PTs for each bus section, confirming to IEC 62271-200, Internal Arc Classified IAC AFLR – 26.3kA for 1sec, Accessibility Class LSC2B-PM Class, comprising of 800 Amp, continuous rated Copper busbars and droppers in all bus / breaker/ adaptor and cable chambers, 02 nos. Rack-In-Rack-Out Handles, structure made from AluZinc/GI sheets to prevent corrosion and rusting.The complete panel including HT and LT chamber with FRLS wiring and acessories shall be manufactured by approved OEM at its own mancufacturing in house facility, and same will be verified via stage/final inspection. System house integrator / channel partner products will not be accepted .

(a) Directional over-current or earth-fault in any of the three phases, (b) Synchronism and Energizing Check before breaker closing to prevent un-syncronized mixing of supplies (c) circuit-breaker-failure alarm, (d) interpanel tripping/blocking signals via GOOSE based peer-to-peer communication, on IEC61850 protocol. (e) Integrted arc flash protection with current and light sensing. The relay shall be communicable on IEC 61850 GOOSE platform over RJ-45/USB/FO port, and fully integrated with the feeder, internally capturing feeder statuses incl. various status, Line-Current, Line-Voltage, Breaker On/Off/Spring.Chrgd, Trip Circuit Failure (from TCS relay), AC Supply Fail, PT Fuse failure relay, Local-Remote etc. and display locally on a built-in back-lit LCD screen with mimic as a Single-Line-Diagram with power & frequency measurements and suitably labelled status LEDs. Relay setting should be possible through inbuilt software or through addtional software supplied by the relay manufacturer.

(v) Metering Equipment comprising of following:- (a) 01 x Digital Voltmeter (Acc.Cl.0.5), 01 x Digital Ammeter (Acc.Cl.0.5), (b) 01 No. Multi-Function-Meter (Acc.Cl.0.5) shall be provided with LCD display for measuring current, voltage, power, power-factor and energy-parameters, Total Harmonic Distortion and Max. Demand Indication, same shall be communicable on ModBus via RS485 port. (vi) LED Indications :- (a) Breaker ON/OFF/TRIP/Spring-Charged, (b) R-Y-B, (c) DC Available LED with push-button (d) AC Supply Fail (e) Trip Circuit Healthy (vii) 08-Window Annunciator with Hooter to indicate following alarms :- (a) OC Trip, (b) EF Trip (c) Trip Circuit Failure, (d) Inter-Tripping Fault, (e) Synchro-Check. (f) PT Fuse Failure The Annunciator will be complete with required Acknowledge/Test buttons as required

(viii) Control Equipment comprising the following :- (a) 01 x TNC Switch, (b) 01 x Local/Remote Switch, (c) 01 x Emergency Trip Push Button, (d) MCBs for AC (e) MCBs for DC (f) Heater Switch with Thermostat - 01no. (g) 3-pin socket with ON/OFF switch - 01no. (h) LED Lamp with ON/OFF switch - 01no. (ix) Flush mounted Auxillary Protection Relays comprising the following:- (a) Trip Circuit Supervision Relay, (b) Master trip Relay, (c) PT Fuse failure relay. (d) DC Supervision Scheme (x) Suitable Disconnecting Link type terminal arrangement shall be provided for interfacing PS-Class CTs installed in the panel for achieving the required protection. (B) 01 x Bus Coupler Panel, comprising of following:- (i) 11kV, 800 Amp, 26.3KA/3-sec, Draw-Out Vacuum Circuit Breaker as per IEC-62271-100 with roll on floor type Vacuum Circuit Breaker having 03 nos. vacuum bottles of same make as of circuit breaker and panel, motorized spring charging mechanism (230VAC) with integral spring charging handle for manual charging, associated push-buttons, anti-pumping feature, and associated Shunt Trip/Close Coils (24V DC).

(ii) Current Transformers 11kV, 400-200/1A-1A Core1: Class 5P10, 5VA, Core2: Class 0.5, 5VA, Core3: Class PS-X - Set of 03 Nos per breaker (iii) Main Protection Relay shall be numerical IED Relay confirming to IEC60255, having 04PT Inputs with microprocessor based protection scheme for tripping the breaker on various faults like (a) Synchronism and Energizing Check before bus-coupler closing to prevent un-syncronized mixing of supplies (b) circuit-breaker-failure alarm. (c) circuit-breaker-failures and interpanel tripping/blocking signals via GOOSE based peer-to-peer communication, on IEC61850 protocol. The relay shall be fully integrated with the feeder, internally capturing feeder statuses incl. various status, Bus-Voltage and display the same locally on a built-in back-lit LCD screen with mimic as a Single-Line-Diagram with power & frequency measurements and suitably labelled status LEDs. Relay setting should be possible through inbuilt software or through addtional software supplied by the relay manufacturer. (iv) LED Indications - (a) Breaker ON/OFF/TRIP/Spring-Charged, (b) R-Y-B, (c) DC Available LED with push-button (d) AC Supply Fail

(e) Trip Circuit Healthy (v) Control Equipment incl. :- (a) 01 x TNC Switch, (b) 01 x Local/Remote Switch, (c) 01 x Emergency Trip Push Button, (d) MCBs for AC (e) MCBs for DC (f) Heater Switch with Thermostat - 01 No. (g) 3-pin socket with ON/OFF switch - 01 No. (h) LED Lamp with ON/OFF switch - 01 No. (vi) Flush mounted Auxillary Protection Relays incl. (a) Trip Circuit Supervision Relay, (b) Master trip Relay, (vii) 08-Window Annunciator with Hooter to indicate following alarms :- (a) Trip Circuit Failure, (b) Inter-Tripping Fault, (c) Synchro-Check. (d) PT Fuse Failure The Annunciator will be complete with required Acknowledge/Test buttons as required (C) 02 x Outgoing Panel, each comprising of following:-

(C) 02 x Outgoing Panel, each comprising of following :- (i) 11kV, 630 Amp, 26.3KA/3-sec, Draw-Out Vacuum Circuit Breaker as per IEC-62271-100. Vacuum Circuit Breaker having 03nos. vacuum bottles of same make as of circuit breaker and panel, motorized spring charging mechanism (230VAC) with integral spring charging handle for manual charging, associated push-buttons, anti-pumping feature, and associated Shunt Trip/Close Coils (24V DC). (ii) Current Transformers 11kV, 200-100/1A-1A for 1 outgoing, 250-125/1A-1A for 2 outgoing, Core1: Class 5P10, 10VA, Core2: Class 0.5, 10VA - Set of 03 Nos. Per breaker (iii) Main Protection Relay shall be numerical IED Relay confirming to IEC60255, having 04CT Inputs with microprocessor based protection scheme for tripping the breaker on various faults as under:- (a) over-current or earth-fault in any of the three phases, (b) circuit-breaker-failure alarm, (c) interpanel tripping/blocking signals via GOOSE based peer-to-peer communication, on IEC61850 protocol. (d) Integrated arc flash protection with current and light sensing.

(e) Tranformer protection (Marshalling Box and Buchhloz relay). The relay shall be communicable on IEC 61850 GOOSE platform over RJ-45/USB/FO port, and fully integrated with the feeder, internally capturing feeder statuses incl. various status, Line-Current, Breaker On/Off/Spring.Chrgd, Trip Circuit Failure (from TCS relay), Local-Remote etc. and display locally on a built-in back-lit LCD screen with mimic as a Single-Line-Diagram with current measurements and suitably labelled status LEDs. Relay setting should be possible through inbuilt software or through addtional software supplied by the relay manufacturer. (iv) Metering Equipment comprising the following:- (a) 01 x Digital Voltmeter (Acc.Cl.0.5), 01 x Digital Ammeter (Acc.Cl.0.5), (b) 01no. Multi-Function-Meter (Acc.Cl.0.5) shall be provided with LCD display for measuring current, voltage, power, power-factor and energy-parameters, Total Harmonic Distortion and Max. Demand Indication, same shall be communicable on ModBus via RS485 port. (v) LED Indications - (a) Breaker ON/OFF/TRIP/Spring-Charged, (b) R-Y-B, (c) DC Available LED with push-button (d) AC Supply Fail (e) Trip Circuit Healthy

(vi) 08-Window Annunciator with Hooter to indicate following alarms :- (a) OC Trip, (b) EF Trip (c) Trip Circuit Failure, (d) Inter-Tripping Fault, The Annunciator will be complete with required Acknowledge/Test buttons as required (vii) Control Equipment comprising the following. (a) 01 x TNC Switch, (b) 01 x Emergency Trip Push Button, (c) 01 x Local/Remote Switch, (d) MCBs for AC/DC isolation (e) Heater Switch with Thermostat - 01no. (f) 3-pin socket with ON/OFF switch - 01no. (g) LEDLamp with ON/OFF switch - 01no. (viii) Flush mounted Auxillary Protection Relays comprising the following. (a) Trip Circuit Supervision Relay, (b) Master trip Relay, (c) DC Supervision Scheme (ix) Transformer protection each comprising of following :- (a) Oil Temperature high. (b) Winding Temperature high. (c ) Tank oil level low. (d) Buchhloz relay trip or sudden gas and sudden oil pressure relay trip. (e) Pressure relief.

Supplying, installation, testing and commissioning of 11 KV, 630 Amps having short circuit capacity 21KA/1-sec, Outdoor (IP54), RMU (Ring main unit) 4 way, comprising of 02 Nos motorized operated Load Break Switch and 02 Nos 630 Amp Fixed-Type motorized spring-charging VCB electrolytic grade copper busbars all inside single, SF-6 gas-filled, robotically welded stainless steel 304 (Non Ferrite Non Megnetic Grade) tank with min. thickness min 2.5 mm, IP 67 Degree of Protection, internal-arc classified 21kA/1sec, on-site-repairable with site replacable bushing/ coupling /mechanism, gas refilling etc. The enclosure shall have padlockable double-door access with anti-theft higes, fully covering the front facia and cable boxes to ensure fail-safe anti-theft protection. The unit alongwith Bus-connected, fixed-type Auxiliary transformer shall include the following along with all necessary accessories and fittings as required at site. (A) 02 Nos, Incoming Load Break Switch module each consisting of following accessories :- (i) Each switching-unit is designed as a three position switch. This three function switch combines the functions of switch-disconnector and earthing switch.