NAME OF WORK:PROVISION OF BUS COUPLER SYSTEM AT MRS AT MASIMPUR MILITARY STATION UNDER GE SILCHAR
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Item Description
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Supply, installation, testing and commisioning of 11 KV, 800A, 26.3KA/3SEC Bus Coupler consisting of the following specifications:-
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NOTES:-(A) MOVING PORTION:-(i)VCB (Easypact) 11 KV, 800A, 25 KA, for 3 Sec horizontal drawout/horizontal isolation VCB fitted with motor operated mechanism with 230V AC Motor, 1 No Shunt Trip 110 V DC closing 110V DC and aux contact 4CO mechanical ON/OFF, Indicator Push Button mechanical operation counter with inbuilt mechanism anti pumping feature, handle set for rack in/out spring charge and ON/OFF - 01 Set (Make Schneider)(ii) Aux contactor for VCB contact multiplication - 01 No (Make: SIEMENS/L&T/SCHNEIDER)(iii) VCB enclosure + connection - 01 No(iv) PVC Sleeved Aluminium Busbar - 01 No(v) BusTrunking + Connection -01 No(B) BREAKER PANEL INDICATION LAMP:-(i) Breaker ON/OFF/Trip Circuit healthy/Spring Charges - 06 Nos (Make: SUMO/SUPAFLEX/ESBEE/EQV)(ii) Breaker Test/Breaker Service(C) SWTCHGEARS AND OTHER ACCESSORIES:-(i) 2P, 16A, AC Switch - 01 No (Make: RECOM/KAYCEE/L&T/EQV)(ii) 3P, 16A, DC Switch - 01 No (Make: RECOM/KAYCEE/L&T/EQV)(iii) Heater with heater switch & Thermostat - 01 No (Make:INDIAN ANCELLERY/ZODIAC & EXPO/BAIECO)(iv) Cubical illumination lamp - 01 No (Make: PHILIPS/BAJAJ/CROMPTON GREAVES)(v) 15A, 230V AC, 3 Pin Plug with Plug socket - 01 No (Make: ANCHOR/HAVELLS/RICHA)(vi) Breaker Control switch (close-Neutral_Trip) - 01 No (Make: RECOM/KAYCEE/L&T/EQV)
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(D) RELAYS:-(i) Auxiliary Relay for Anti-pumping - 01 No (Make: PLA/KAYCEE)(ii) Control Fuse - 06 Nos (Make: BUSSMAN/STS/EQV)(iii) Emergency Trip Push Button - 01 No (Make: STS/L&T/SCHNEIDER)(iv) T.C Healthy Check Push Button - 01 No (Make: STS/L&T/SCHNEIDER)
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Materials and labour for earthing complete with galvanised iron earth plate electrode 600 mm x 600 mm x 6 mm thick, burried directly and preferably vertically in ground, earth pit not less than 2.25 Mtr deep below ground level with top edge of the plate not less than 1.5 m below ground level connetced with galvanised wire of 4mm diaby means of nuts, bolts, check nuts and washers made of galvanised iron or steel earthing lead to be protected by galvanised iron pipe of 15mm bore (light grade) and other end connected to earthing test point or lightening arrestor or main controlling switch as directed including providing funnel with 20mm bore galvanised iron pipe (medium grade), wire mesh, charcoal or coke and common salt in alternate layer of 15cm (compacted thickness) all round the earth electrode, concrete earth pit in PCC (1:3:6) type C-1 (with 20mm graded aggregate), 50mm thick precast RCC (1:2:4) cover slab (re-inforced with 8mm dia TMT bar @ 15 cm C/C bothways and suitable handle made of 10mm dia) including necessary earth work in excavation, returning filling and removal of surplus earth upto a distance not exceeding 50 m etc all as shown on electrical plate No. 3 of MES Schedule Part-I(2009) complete including testing on completion including taking down old unserviciable earthing set all as specified and as directed.Notes:-(i) Main earthing strip from earth plate electrode to rest point upto length of 7.5 meters length shall deemed to be included in the unit rate quoted against this item. (ii) On testing after completion if the desired resistenance is not obtained the contractor shall redo the earthing without any extra cost to the department.
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