Military Engineer Services Tender

NOTE (Applicable for all items):- The bidders/contractors are advised to read tender document & all corrigendum/ amendments and General conditions of contracts before entrying/quoting the rates. SCHEDULE 'A'

Supply, installation, testing & commissioning of 33KV 630Amps 25kA-3sec Indoor type floor mounted compact SF6 Gas Insulated Switchgear with internal copper bus bars, consisting of with two Nos. motorized Load Break Switch as incomer and two nos motorised Vacuum Circuit Breaker as outgoings along with Bus connect Air Insulated PT Panel. All live parts, bus bars, LBS & VCBs connections, ON-OFF offload switch, Earth switch of feeder should be enclosed in one tank sealed for life robotically welded non magnetic and non ferrite grade stainless steel tank Grade 304 of minimum 2 mm thick having IP67 degree of protection filled with SF6 gas as insulation with leakage rate less than 0.1% per year tested as per IEC 62271-200. SF6 Gas Tank and cable chamber should be tested for an internal arc fault of 25kA for 1 sec with AFLR classification. All four modules LBS and VCB should be enclosed in one SF6 tank to avoid multiple connections. The unit shall have front cable entry for ease of installation and shall have site replaceable bushings for ease of troubleshooting during breakdown at site (to avoid dismantling of SWG and rectification at OEM factory for minor gas leakage issues due to bushing breakage). The Gas Insulated switchgear should be complete with all accessories and should be suitable to connect cable upto 1RX3Cx400sqmm. VPIS, cable supports, all front cable terminations, mechanical indications for VCB, OFF load switch & Earth switch, Manometer as per with IEC standards 62271-1, 100, 200. Altitude of installation up to 1500m as per IEC 60120. The unit shall include the following with all necessary standard fitting required at site. Product from License partner / Authorized Integrators are not accepted.

VACUUM CIRCUIT BREAKER feeder 630A VCB module for making & breaking of fault current alongwith Earth Switch of full making capacity-2 Nos. Motor operated 630 A Vacuum circuit breaker having spring stored mechanism. ON-OFF off load switch and earthing switch downstream vacuum circuit-breaker. Menometer per tank per feeder. “Live Cable” LED Indicators thru Capacitor Voltage Dividers mounted on the bushings. Short time breaking current - 25KA/ 3 sec, Making Capacity - 62.5KA, VCB must confirm operating sequence O-0.3sec-CO-3Min-CO and 10000 mechanical operation., Power frequency withstand voltage - 70KV & Impulse withstand voltage - 170KV Front cover mechanism - IP2X. Green(ON)/Red(OFF) push buttons to operate VCB. Indication Lamp for ON, OFF, TCS, TRIP, SPRING CHARGE etc., Auxiliary powered numerical protection relay having Over Current, erath fault, Over Voltage & Undervoltage with IEC61850 complaint rear RJ45 port with programable 10 DO & 16DI. Multifunction meter with MODBUS communication - 1No. (Each VCB) Cast Resin Ring core CT for metering on cables 100-50/1A, Class: 0.5 2.5 VA - 3 Nos Cast Resin Ring core CT for protection on cables 100-50/1A, 5P10 2.5 VA - 3 Nos Mechanical ON/OFF/EARTH/Spring charge Indication, Cable boxes should be Arc Proof interlocked with respective Earthing Switches. Switchgear VCB, Vaccum Interrupter, Relay must be of same make and SCADA compatible suitable to system