| 1 | Supplying, installing, testing and commissioning of 33kV, 630A, 25KA /3 -sec, IAC, AFLR, Gas-Insulated Panel making arrangement IP 4X Indoor suitable, floor-mounted, complying to IEC 62271-200 for design, manufacturing and type-tested, including Internal Arc for operator safety (IAC 25kA/1-sec), having 01 Bus coupler+with 01 bus raiser as a extension with existing GIS Panel (ABB) all inside Gas-Insulated IP65 (partition class : partition of metal) SS 304 grade SS tank (2.5 mm thickness) copper bus bar, flush-front mechanism having lockable access door with mounted bay-protection and control scheme, including LEDs, mimic etc. as prescribed below , also SCADA complying to IEC 61850 :- | 1.00 | Each Job |
| 2 | (i) Rated voltage/maximum operating voltage - 36 KV, (ii) Rated power frquency withstand voltage 70 KV(RMS) (iii) Rated lighting impulse withstand voltage 170 KV(Peak) (iv) Rated frequency 50 Hz, (v) Rated short circuit making current 62.5 KA, (vi) Rated short time withstand current 25 KA, (vii) Rated duration of short circuit 3 Sec, (viii) Rated opening time 45 m sec, (ix) Rated break time 60 m sec, (x) Rated auxiliary voltage 110 V DC.(xi) GIS vaccum Interruter main numerical relays & meters must be same make for better life cycle optimization. (xii) Each VCB shall comprises of 02 Nos tripping coil. | | |
| 3 | (A) 01 x Bus Coupler 33 KV GIS Panel (i) 33 kV, 630 Amp, 25 KA /3-sec, 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 (110V DC).
(ii) Current Transformers 33 KV 400/200/1-1 amp, Core2: Class 0.5, 5VA, Core1: Class 5P20 - Set of 03 Nos per breaker
(iii) Main Protection Relay shall be a Numerical Drawout IED Relay ( Should be GIS manufacturers own make) communicable on IEC 61850 GOOSE platform over double /Redundant RJ-45/USB/FO port and HSR complaint with programmable min 14 digital input, min 10 digital outputs, 11 front LED ,large dynamic display | | |
| 4 | ,microprocessor based protection scheme for detecting, indicating and tripping the breaker on various faults like (a) over current+ earth fault protection for HT/LT side. The Relay shall have complete bay control features incl. displaying Feeder SLD (position indication), integrated ON/OFF control function, three phase current measurement, disturbance recorder, event log and fault record with non-volatile memory, self-supervision. The relay shall have sufficient binary inputs and outputs to receive and issue external commands as listed separately. However more DI & DO may be provided in order to fulfill the scheme requirement for SCADA compatibilty.The relay shall be fully integrated with the feeder, internally capturing feeder statuses incl. Breaker On/Off/Spring.Chrgd, Line-Current, SF6 Gas Pressure Low (Busbar compartment), SF6 Gas Pressure Low (Breaker Compartment), Master Trip, Trip Circuit Failure (from TCS relay) and display locally on a built-in back-lit LCD screen as a Single-Line-Diagram with parameters as advised (i) Manometer in each gas chamber.
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| 5 | (ii) LED Indications - Breaker ON/OFF/TRIP/Spring-Charged, R-Y-B, Disconnector-ON/OFF/EARTH, DC Available
(iii) 16-Window Annunciator with Ackn/Test/Reset push button and Hooter to indicate following alarms :- (a) SF6 Gas Pressure Low (Busbar compartment), (b) SF6 Gas Pressure Low (Breaker Compartment), (c) Local Master Trip, (d) Trip Circuit Failure,
(iv) Control Equipment incl. 01 x TNC Switch, MCBs for AC/DC isolation as required
(v) Other accessories incl. Space Heater with thermostat for LV panel and cable chamber, 3-Pin socket with switch, LED lamp
(vi) Soft ware for relay and cable. (vii) Panel shall be offered with digital Ammeter and selector switch (viii) Vaccuum interrupter and GIS panel should be of same make.
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