CWE/CHM(U)-93/2024-25 REPAIR/ MAINT WORKS OF HT 11 KV DISTRIBUTION NETWORK AND CONNECTED ITEMS AT OTM ACCN UNDER GE(U) CHANDIMANDIR AT CHANDIMANDIR MIL STN

Amount

M&L for servicing of the outdoor type HT 11 KV 200 amps/ 400 amps capacity gang operated air break switch mounted on HT two pole/ four pole structure by properly adjusting the mountings for ON/ OFF operation by working from ground level, adjusting the length of operation rod, lubricating the moving parts, tightening of all nuts/ bolts, checking of all jumper connections for proper contact of male/ female contacts, replacing worn out spares and testing for proper working complete all as specified and as directed by Engineer-in-Charge. Note:- Spare parts will be measured and paid separately, as supply only.

Supply only moving contact blade (male contact) suitable for 200 amps 11 KV outdoor GOAB switch complete all as specified.

Supply only spring loaded fixed contacts (female contact jaw) suitable for 200 amps 11 KV outdoor GOAB switch complete all as specified.

Supply only post insulators suitable for 200 amps 11 KV outdoor GOAB switch complete all as specified.

Supply only tinned copper flexible wires woven connecting jumper suitable for 200 amps 11 KV outdoor GOAB switch complete all as specified.

Supply only MS jumper carrier for 200 amps 11 KV outdoor GOAB switch complete all as specified.

Supply only moving contact blade (male contact) suitable for 400 amps 11 KV outdoor GOAB switch complete all as specified.

Supply only spring loaded fixed contacts (female contact jaw) suitable for 400 amps 11 KV outdoor GOAB switch complete all as specified.

Supply only post insulators suitable for 400 amps 11 KV outdoor GOAB switch complete all as specified.

Supply only tinned copper flexible wires woven connecting jumper suitable for 400 amps 11 KV outdoor GOAB switch complete all as specified.

Supply only MS jumper carrier for 400 amps 11 KV outdoor GOAB switch complete all as specified.

Taking down old rusted cross arms/ anti climbing devices including clamps, nuts/ bolts etc complete all as specifed and as directed by Engineer-in-Charge.

Taking down old unserviceable HT insulators of any size and type complete all as specifed and as directed by Engineer-in-Charge.

Disconnecting and taking out LT Panel of any type and size complete all as specifed and as directed by Engineer-in-Charge.

Taking down old burnt HT jumpers of any size/ type complete all as specifed and as directed by Engineer-in-Charge.

Taking down old unserviceable HT GOD of any size/ type complete all as specifed and as directed by Engineer-in-Charge.

Taking out old unserviceable rubber mats of any size and type complete all as specifed and as directed by Engineer-in-Charge.

Taking down old broken cable route indicator of any size/type complete all as specifed and as directed by Engineer-in-Charge.

Taking down old unserviceable HT lightening arrestors of any size/ type complete all as specifed and as directed by Engineer-in-Charge.

Taking out old damaged PCC pole of any size incl breaking PCC foundation and clearing the site complete all as specifed and as directed by Engineer-in-Charge.

Excavation in trenches in soft/ loose soil not exceeding 1.5 metre deep and not exceeding 1.5 mtr wide and getting out soil for laying cables/ fixing of poles etc. including removing cable protection PCC covers/ bricks and disposal of unserviceable covers within 50 m complete all as specified and directed by Engineer-in-Charge.

Note : (i) Excavation shall be made carefully in order to avoid damage of existing cables and protection covers.

Excavation in trenches in hard/ dense soil, not exceeding 1.50 metre wide, exceeding 1.5 metre and not exeeding 3.0 metre in depth, for erection of poles etc. and getting out complete all as specifed and as directed by Engineer-in-Charge.

Returning filling in, including spreading, levelling, watering and well ramming in layers not exceeding 25 cm thick each complete all as specifed and as directed by Engineer-in-Charge.

Removing excavated spoil to a distance not exceeding 50 metre and depositing where directed at a level not exceeding 1.5 metre above the starting point complete all as specifed and as directed by Engineer-in-Charge.

Supplying and laying un-reinforced precast concrete cable cover, class HV, type 1 flat, of size 300 mm x 180 mm x 40 mm complete all as specifed and as directed by Engineer-in-Charge.

Supplying and laying un-reinforced precast concrete cable cover, class LV, type 1 flat, size 250 mm x 150 mm x 40 mm complete all as specifed and as directed by Engineer-in-Charge.

M&L for Sand cushioning to UG cable 8 cm thick before laying the cable and 15 cm above the cable as specified in SSR Part-I to under ground cable including punning down of sand in layer complete all as specified and as directed by Engineer-in-charge. Note:(i) Consolidated/ Punned sand thickness shall be considered for purpose of payment. (ii) Sand shall be same as specified for plastering work.

Supply and Fixing GI tubes 100 mm bore, 'light grade' for cable protection on poles/ walls/ under road/ culvert etc complete all as specifed and as directed by Engineer-in-Charge.

Supply and laying 100 mm outer dia, double walled corrugated HDPE duct pipe of approved colour conforming to IS-14930 Part-II with antirodent and non flame propoggating properties complete with fitings for cable protection complete all as specifed and as directed by Engineer-in-Charge.

Disconnecting and taking out existing defective HT cable of any size complete including joints/ protection pipes etc from trenches/ ducts/ poles etc complete all as specifed and as directed by Engineer-in-Charge.

S&F in trenches, ducts or fixing along the poles or passing through pipes or laid under floors etc and testing XLPE insulated, screened PVC bedded, galvanised steel strip armoured, heavy duty HT electric power cables, ISI marked with aluminium conductor, 11000 volts grade of cross sectional area 95 sqmm 3 core, earthed, complete all as specifed and as directed by Engineer-in-Charge.

All as per Serial Item No 31.00 here-in-before but 120 Sqmm 3 core

All as per Serial Item No 31.00 here-in-before but 150 Sqmm 3 core

All as per Serial Item No 31.00 here-in-before but 185 Sqmm 3 core

All as per Serial Item No 31.00 here-in-before but 240 Sqmm 3 core

Disconnecting and taking out existing defective LT cable of any size complete including joints/protection pipes etc from trenches/ ducts/ poles etc complete all as specifed and as directed by Engineer-in-Charge.

Supply, laying, jointing and testing LT underground cable, XLPE insulated , PVC sheathed, armoured heavy duty and 1100 volts grade with multistranded aluminium conductor of size 400 sqmm 3.5 core in trenches/ ducts/ through pipes/ under culverts etc complete all as specifed and as directed by Engineer-in-Charge.

M&L for PCC 1:4:8, type D-2 (using 40 mm graded crushed stone aggregates) as in pole foundations etc complete all as specifed and as directed by Engineer-in-Charge.

M&L for PCC 1:3:6, type C-2 (using 40 mm graded crushed stone aggregates) as in foundation filling & mass concrete for poles/ struts etc including provision of necessary form work complete all as specifed and as directed by Engineer-in-Charge.

M&L for PCC 1:2:4, type B-1 (using 20 mm graded crushed stone aggregates) as in pole/ strut coping including provision of necessary form work complete all as specifed and as directed by Engineer-in-Charge.

S&F in replacement operating handle for outdoor type HT 11 KV GOD switches complete all as specifed and as directed by Engineer-in-Charge.

S&F gang operated air break switches with vertical isolation complete with drop out fuse unit assembly, triple pole, 12 insulator type, manually operated, mounted on insulators and steel frame with operating mechanism worked from ground level for capacity 400 Amps, 11 KV complete with GI operating pipe of heavy duty grade of suitable length complete all as specifed and as directed by Engineer-in-Charge.

All as per Serial Item no. 42.00 here-in-before but of rating 200 Amps.

S&F route indicator for HT cable, disc type of size 150 mm dia CI, 8 mm thickness embossed with "MES HT CABLE" and fixed on angle iron 35 x 35 x 5 mm, 600 mm long and painted in anti corrosive brown color paint including PCC 1:2:4, type B-1 (using 20 mm graded stone aggregates) foundation block of size 300 x 300 x 300 mm, duly fixed in ground complete all as specifed and as directed by Engineer-in-Charge.

S&F GI strip 32 x 6 mm and connecting from earth test point to lightening arrestor installed on top of 11 metre long poles (four pole/ two pole structures) complete all as specifed and as directed by Engineer-in-Charge.

M&L for anti climbing devices, spikes type, fabricated out of M.S. bars (round, square and flat) including nuts, bolts, Washers and clamps made to shape to suit the size of the pole complete all as specifed and as directed by Engineer-in-Charge.

Supply and fixing cable jointing kit for 11 KV (Earthed) grade cable for Outdoor end termination Heat shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 50 sqmm to 95 sqmm complete all as specified and as directed by Engineer-in-charge.

All as per Serial Item No 47.00 here-in-before but of size 120 to 185 Sqmm.

All as per Serial Item No 47.00 here-in-before but of size 240 Sqmm.

Supply and fixing cable jointing kit for 11 KV (Earthed) grade cable for indoor end termination Heat shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 50 sqmm to 95 sqmm complete all as specified and as directed by Engineer-in-charge.

All as per item No 50.00 here-in-before but of size 120 to 185 Sqmm.

All as per Serial Item No 50.00 here-in-before but of size 240 Sqmm.

Supply and fixing cable jointing kit for 11 KV (Earthed) grade cable for straight through, heat shrinkable type joint complete with jointing material and accessories suitable for 3 core XLPE armored aluminium conductor cable of size 50 to 95 Sqmm complete all as specified and as directed by Engineer-in-charge.

All as per item No 53.00 here-in-before but of size 120 to 185 Sqmm.

All as per Serial Item No 53.00 here-in-before but of size 240 Sqmm.

M&L for cross arms, supports, clamps etc fabricated from structural steel section including nuts, bolts, washers, welding, bending (cold or hot), drilling holes for bolts, bent to any shape or size as indicated or directed inclusive of one coat of primer, one under coat and one finishing coat of aluminium paint complete all as specified and as directed by Engineer-in-charge.

Supply, installation, commissioning and testing of outdoor type, floor mounting double door panel fabricated out of 3.15 mm thick CRCA sheet and MC 75 for base channel, 04 nos legs 750 mm long made from 50 x 50 x 6 mm angle iron, duly powder coated, dust/ water and weather proof, grouted in PCC 1:2:4, type B-1 (using 20 mm graded stone aggregates) foundation, suitable for 415 volts, 3 phase, 4 wire, 50 Hz complete of suitable size with and including of the following:-

[a] Aluminium strip bus bar TPN sleeve insulated mounted on epoxy insulators of capacity 1000 amps - 01 set.

[b] ACB FP 800 Amps, fixed type, 415 volts, 50 Hz- 01 No (Incoming)

[c] MCCB TP 400 Amps, 415 volts, 50 Hz, 35 KA with adjustable thermal and magnetic release and Ics=100% of Icu - 02 No (including 01 No. spare) and MCCB TP 250 Amps, 415 volts, 50 Hz, 35 KA with adjustable thermal and magnetic release and Ics=100% of Icu - 02 No (Outgoing)

[d] Digital multifunction meter of size 96 x 96 mm flush mounting type - 01 No, LT CTs of suitable ration - 03 Nos, LED RYB indicators- Set of three, control wiring with single core copper cable FRLS wire of suitable size incl MCB for each circuit complete.

[e] Earthing terminals - 02 Nos and danger notice plate - 01 No.

S&F of pin type insulator porcelain, vitreous white/ brown including one galvanised MS spindle nut and two GI washers of size 150 mm height, 150 mm dia for 11 KV complete all as specified and as directed by Engineer-in-charge.

S&F of single disc porcelain, vitreous white/ brown insulator 255 mm dia and 145 mm height assembly for tension with tension clamps for conductor working pressure 11000 volts complete all as specified and as directed by Engineer-in-charge.

S&F steel tubular swaged poles complete with mild steel base plate, closed at top as specified, type 410 SP-55 (11 metre long) including painting with two coats of black bitumonous paint externally up to the planted depth and internally through out and remaining external portion with two coats of aluminium paint, over a coat of red oxide primer complete all as specified and as directed by Engineer-in-charge. NOTE: Excavation & earthwork, foundation concrete will be meaured & paid for separately under respective item(s).

S&F of lightening arrestors, expulsion type complete with all fittings, transmission class, discharge capacity 65 KA, 11000 volts complete all as specified and as directed by Engineer-in-charge.

Supplying and laying synthetic Rubber insulated mats 2.5 mm thick for voltage upto 11 KV for electrical purpose as per IS 15652-2006, (superseding IS 5424) suitable for electrical shock safety of sizes 2m x 1m complete all as specified and as directed by Engineer-in-charge.

Finding of fault to 11 KV UG cable with suitable fault locator equipment & pin point the fault in the faulty cable including necessary excavation and earth work for exposing the faulty portion of the UG cable complete all as specified and as directed by Engineer-in-charge.

Cutting wild grass, bushes, shrubs etc and cleaning of area/ yard of sub station buildings complete all as specified and as directed by Engineer-in-charge.

S&F jumpers for HT lines/ connections made from aluminium conductor single core, PVC insulated cable of suitable size complete including winding wires, aluminium tapes etc complete all as specified and as directed by Engineer-in-charge.

Supply and filling for topping up insulating oil, ISI marked with dielectric strength not less than 50 KV complete all as specified and as directed by Engineer-in-charge.

M&L for preparing the surfaces for re-painting by removing dust/ rust etc and painting of old steel tubular poles 11 Mtr long alongwith cross arms/ clamps etc with two coats of aluminium paint over a coat of red oxide primer complete all as specified and as directed by Engineer-in-Charge. Note:- Poles alongwith cross arms fixed as two pole or four pole structures shall also be measured and paid under this item only.

M&L for Earthing complete with galvanised steel earth plate electrode 60 cm x 60 cm x 6 mm thick buried directly in ground (earth pit not less than 2.25 Metre deep below ground level) with top edge of the plate not less than 1.5 Metre below normal ground level, connected to galvanised earth lead strip 32 x 6 mm dia by means of bolts, nuts, check nuts and washers of GI or steel all as shown in electrical plate No. 5 of SSR Part-I connected to earthing test point panel all as specified or indicated and testing on completion as directed by the Engineer-in-Charge including necessary excavation & earth work in any type of soil, funnel, PCC chamber (1 : 3 : 6) type C-1, CI pit cover and frame, charcoal, salt including earth lead protected by 40 mm dia light grade GI pipe and 20mm dia medium grade GI Pipe for watering including taking down old Earthing complete all as specified and as directed by Engineer-in-Charge.

Note :- Earth lead strip 32 x 6 mm and GI 40 mm dia protecion pipe upto 7.5 mtr length will be deemed to include in the unit rate quoted against the item.

Disconnecting the electrical supply, disconnecting incoming/ outgoing cable connections & earhing connections, taking out the existing transformer of capacity 200 KVA to 500 KVA from the sub station building using crane of suitable capacity and shifting the same to another site, reinstalling as directed, making all incoming/ outgoing cable connectios and testing for satisfactory working complete all as specified and as directed by Engineer-in-charge.

Note :- All T&P, vehicle for transportation of the transformer, crane etc shall be arranged by the contractor and unit rate quoted shall be deemed to include the cost of the same.

Surface excavation not exceeding 30 cm deep and averaging 15 cm deep and getting out in hard/ dense soil in the transformer yard complete all as specified and as directed by Engineer-in-charge.

Supply and spread graded coarse aggregates of 63 mm nominal size around outdoor transformer and HT 11 KV two/ four pole structure complete all as specified and as directed by Engineer-in-charge.

HARISH SALES CORPORATION (BID ID -3275926)

SHARMA ELECTRICAL ENGINEERS (BID ID -3272356)

Nirmal Enterprise (BID ID -3271439)

shiv shanker enterprises (BID ID -3264050)

Raman Electric Trading Co (BID ID -3272061)

Bharat Enterprises (BID ID -3264525)

M/S BALWINDER SINGH (BID ID -3263207)