PROVN OF 33 KV GIS HT BUS COUPLER PANEL AT HQ NSB-II SUB STN AND AUGMENTATION OF EXISTING 33 KV NETWORK WITH CONNECTED ITEMS UNDER GE(U) ELECT SUPPLY DELHI CANTT -10

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 :-

(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.

(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

,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.

(ix) Metering Equipment incl. 01 x Digital Ammeter (Acc.Cl.0.5), 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

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

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 x Incomming 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) coppeer bus bar 630 amp 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 :-

(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 02 Nos tripping coil.

(i) 33 kV, 630 Amp, 25KA /3 -sec,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 (110V DC).

(ii) Current Transformers 33 KV 200/1-1 amp, Core2: Class 0.5, 5VA, Core2: Class PS-X - Set of 03 nos per breaker

(iii) Touch proof Potential Transformers for easy maintenance, 33kV/rt3:110V/rt3, 50VA, Core1.0.5 & Core2 3P with MCBs for LT isolation - Set of 03 Nos.

(iv) Aux. Protections incl. Trip Circuit Supervision, Circuit Breaker Failure protection, master trip etc. (v) Main, Numerical, Drawout Protection Relay ( Line Differential ) with large LED displaying mimic bay for ON/OFF control and monitoring of feeder parameters listed below and built in disturbance recorder cycle. The relay shall be fully integrated with the feeder, internally capturing feeder statuses incl. Breaker On,Off,Spring.Charged, three position Disconnector (On,Off,Earth), Line-Current/Line-Voltage, Trip Circuit Healthy, Gas-Pressure Low in Breaker Chamber, Gas-Pressure Low in Busbar Chamber, AC Supply Fail, Local-Remote switch The relay shall have built-in back-lit LCD screen to show Single-Line-Diagram and other relevant parameters.

The relay shall be communicable on IEC 61850 GOOSE platform over double /Redundant RJ-45/USB/FO port, having required protection functions including (a) The Line Differential scheme will be implemented using Single Mode Fibre Optic protection communication link between local and remote relay. Suitable blocking arrangement shall be available to prevent nuisance tripping due to loss of connection, (b) Over current and earth fault protection (c) Phase discontinuity protection, (d) Synchro-check between Incomer-01 and Incomer-02

(vi) Flush mounted Aux. Protection Relays incl. (a) Trip Circuit Supervision Relay, (b) Master trip Relay (vii) Metering Equipment incl. 01 x Digital Voltmeter (Acc.Cl.0.5), 01 x Digital Ammeter (Acc.Cl.0.5), 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 (viii) LED Indications - Breaker ON/OFF/TRIP/Spring-Charged, R-Y-B, Disconnector-ON/OFF/EARTH, DC Available, AC Supply Fail

(xi) Other accessories incl. Space Heater with thermostat for LV panel and cable chamber, 3-Pin socket with switch, LED lamp. (xii) Suitable terminal arrangement along with Light Interface Unit, Patch-cord and associated port for spliced connection with external armoured fibre-optic cable shall be provided for achieving pilot-wire (OFC) connection (line-differential).

(xvi) Transformer feeder shall have transformer differential protection in built in relay. (xvii) Each gas filled compartment shall have Manometer. (xviii) Self powered wirelwss thermal sensor to be provided on cable termination. Note: (i) The make of GIS Panel and relay shall be of the same make/OEM (ii) New GIS Panel (01 x Incomming) will be installed with existing GIS Panel (ABB) on right side in all respect i.e. cable termination kit supply, installation, commissionig, testing, calibration properly with existing 33 KV GIS Panel scheme wiring addition alteration etc for smooth execution and coupling with the help of OEM Service team complete all as directed and specified. (iii) All rates quoted shall be include the modification of all technical/software/relay configuration to existing 33 KV GIS panel calibration with existing system to the UP system and down stream grids for discrimination chat/tripping against faults/over currents/earth faults/OFC based differential protection etc. (iv) Rate quoted include the cost of necessary modification to the existing floor/cable trenches/civil work for installation of 33 KV GIS panel

M&L for Earthing of machinery/equipments for 33 KV GIS Panel, with galvanized steel earth plate electrode of size 60cm x 60cm x 6 mm thick, buried directly in ground (earth pit not less than 2.10 m below normal ground level) with top edge of earth plate not less than 1.5m below normal ground level, connected to galvanized iron strip 32 x 6mm by means of bolts, nuts, check nuts and washers of galvanised iron or steel as shown in electrical plate No 3 of SSR Part I, connected to earth test point and the equipment on the other nuts and washers of galvanised ironside complete all as specified, including testing and commissioning complete all as specified and directed.

Excavation in trenches in soft and loose soil n.exc 1.5 mtr wide and n.exc. 1.5 mtr depth for laying of electric power cable all as specified and directed.

M&L for returing filling in, including spreading, levelling, watering and well ramming in layers not exc 25 cm in soft/loose soil complete all as directed and specified.

M&L for removing of excavated material n exc. 50m and depostiting where directed at a level n exc. 1.5m in soils complete all as specified and directed.

M & L for sand as in sand cushioning to underground XLPE HT cable incl punning down of sand layer complete all as specified and directed.

Supply & laying reinforced precast concrete cable cover class EHV type 1 with peak size 450 mm x230mmx50mm in trenches for protection to under ground cable complete all as specified and directed.

Supply laying jointing testing and commissioning of 33 KV (E) grade of size 400 sqmm 3 core (Heavy duty)with stranded compacted circular aluminum conductor, conductor screened with extruded semi-conducting compound, XLPE insulated, Insulation screened with extruded semi-conducting compound in combination with Copper tape, cores laid up, inner sheath of Thermoplastic tape, PVC bedded, galvanized steel strip armoured and over all FRLS PVC Sheated conforming to IS-7098, part -II with latest amendments laid in Cable Ducts/ trays/ trenches/encased in GI pipes/RCC / DWC HDPE pipes complete all as specified and directed.

Supply, Fixing indoor termination joint suitable for 33kV XLPE cable 3CX400Sqmm ,as per recommonded make of 36kV SF6 Insulated switchgear supplier. Screen Connectors should be terminated in 36kV CSG by "certified jointer" only duly certififed by Switchgear Manufacturer or supplier of Screen Connector.Touchproof Cable termination Kit.

Supply and fix Cable jointing kit for 33 KV (Earthed) grade cable for straight through heat shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 400 Sqmm.all as specified and directed.