SPECIAL REPAIR TO BER IMPROVEMENT OF HT SWITCHING SYSTEM BY REPLACEMENT AIR BREAK GOD SWITCH WITH AIR BREAK/SF6 BASED LOAD BREAK SWITCH UNIT AT MIL STN GANDHINAGAR

Amount

Excavating in trenches not exceeding 1.5m wide and not exceeding 1.5 m in depth for foundation of pole,laying of cables etc in soft/loose soil and getting out complete all as specified and directed.

Excavation in trenches not exceeding 1.5 m wide and exceeding from 1.5 m to 3 m in depth for including getting out Soft/Loose soil complete all as specified.

Returning filling in including spreading, leveling, watering and well ramming in layer not exc 25 cm complete all as specified and directed.

Removing excavated material not exc 50 mtr and depositing where directed at a level not exc. 1.5 m above the starting point complete all as specified and directed.

Mateial and Labour for providing dry river sand as in sand cushioning to UG cable including punning gently all as directed.

Supplying and laying reinforced precast concrete cable cover, class HV, type 1 flat, size 300mm x 180mm x 40mm for HT cable and laid dry in trenches over underground cables all as specified and directed.

Supply and fix cable jointing kit for 11 KV grade cable for indoor termination Cold Shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured Al conductor cable of size 95 sq mm complete all as specified and directed.

Supply and fix cable jointing kit for 11 KV grade cable for straight through Cold Shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured Al conductor cable of size 95 sq mm complete all as specified and directed.

Supply laying & testing cable XLPE insulated screened PVC bedded, galvanized steel strip or wire armored, electric power cables (heavy duty)with stranded aluminum conductor, 11000 volts grade, of size 3 core 95 sqmm complete all as specified and directed.

Supply, installation, testing & commssioning incl transportation at site HT 12 kV,3Ph,21 kA-3 sec, 50Hz, 2 way non extendable outdoor type totally enclosed metal clad SF6, ring main unit having rupturing capacity upto 630A, with 02 way non extensible, with one direct cable module and one VCB configuration DV, active load-630 A, closed loop-630 A, off load cable charging 135 A, Earth fault-200 A, Earth fault cable charging-115 A, short circuit making capacity 52 A, equipped with external bushings which comply with DIN47636T1 & T2/EDF HN 525-61 for termination of cables, all bushings are situated in the same height from the floor and are protected by the cable cover, installing current transformers. The sheilding is laid back throgh the centre hole and earthed, voltage presence indication, system (VPIS) incl all accessories and mountings provided by the manufacturer with mounting base frame/platformcomplete in all respect, technical approval is required with all technical data and control drawings from accepting officer before incorporation of work. Make: ABB, Siemens, Schneider

Supply, installation, testing & commssioning incl transportation at site HT 12 kV,3Ph,21 kA-3 sec, 50Hz, 3 way non extendable outdoor type totally enclosed metal clad SF6, ring main unit having rupturing capacity upto 630A, with 02 way non extensible, with one direct cable module and two LBS( Load break switch) configuration DCC, active load-630 A, closed loop-630 A, off load cable charging 135 A, Earth fault-200 A, Earth fault cable charging-115 A, short circuit making capacity 52 A, equipped with external bushings which comply with DIN47636T1 & T2/EDF HN 525-61 for termination of cables, all bushings are situated in the same height from the floor and are protected by the cable cover, installing current transformers. The sheilding is laid back throgh the centre hole and earthed, voltage presence indication, system (VPIS) incl all accessories and mountings provided by the manufacturer with mounting base frame/platformcomplete in all respect, technical approval is required with all technical data and control drawings from accepting officer before incorporation of work. Make: ABB, Siemens, Schneider

Earthing complete with galvanised steel earth plate electrode 60×60cm.× 6mm thick, buried directly in ground (earth pit not less than 2.25 metres deep below ground level) with top edge of the plate not less'than 1.5 metres below normal ground level, connected to using galvanised iron strip 32x6 mm as earthing lead by means of bolts, nuts, check nuts and washers of galvanised iron or steel all as shown in electrical plate No. 3 connected to earthing test point all as specified or indicated including testing on completion all as specified and directed .

S and F HT Junction Box, 11 KV , 1200(H) X 900(W) X 500(D) in mm in Size and overall size, CRCA MS Powder Coated, RAL 7035, 2 mm thick, IP 66, Front Door with DC Lock, Base (Ground) Mounted with 2 Nos of 100 x 100 Section Height minimum 900 mm with grouting plate of 10 mm thick of size 250 x 250, 11 KV , 3 Phase Without Neutral, Intra phase partition - FRP sheet of min 3 mm provided between phased Cladding on Door -FRP sheet of min 3 mm provided inside the door, Canopy- CRCA MS powder coated of size 1100 x 700 ( W x D in mm) Complete all as speciified and directed by Engr-in-charge. Note:- (i) HV Testing To be checked at 25 KV by calibrated HV tester (ii) Earthing 2 Nos External and 2 Nos of Internal – M12 Studs welded to body (iii) Blankers for Entries All entries provided by blanker plugs or plates OUTGOING ENTRIES SUITABLE FOR :3 x 95 sq.mm, MINIMUM BUSBAR SECTION OFALUMINIUM:50 x 10 and rating 400 A

Taking out old UNSV 2 pole structure11 KV by excavation and using special T &P hydra, JCB etc incl all GoD, lightening arrestor, channels etc complete all as specified and directed.

Taking out old UNSV 4 pole structure11 KV by excavation and using special T &P hydra, JCB etc incl all GoD, lightening arrestor, channels etc complete all as specified and directed.

Electricals India (BID ID -3312971)

BK CONSTRUCTION (BID ID -3307930)