CWE/CHM(U)-132/2025-26 COMPREHENSIVE MAINT OF 2 MW SOLAR POWER PLANT AT CHANDIMANDIR MILITARY STATION UNDER AGE EM-I OF GE (U) CHNADIMANDIR

S&F in replacement of solar photo voltaic module panels 330 Wp, rated voltage 37.67 V, rated current 8.79 Amp, crystalline silicon PV modules with spare parts required for smooth functioning, tightenining of electric connection complete and assembling and reconnecting including taking down old broken/ unserviceable module all as per site requirment complete all as specified and directed by Engineer-In-Charge.

Repair/ Servicing of On grid inverter outdoor type including replacement of unserviceable parts, IP-65 protection, 60 KW capacity, AC nominal rating (array to inverter ratio 1:1), 3 P, 50 HZ, AC power string inverter on three phase side output voltage 415 V (+12.5%, 20% VAC) maximum current ripple 4% PP, Reactive power 0.95, inductive to 0.95 capacity, harmonic distortion less than 3%, over all efficiency of not less than 98% and above at full load with all protection (IEC-61683), Operating temperature range 20 Degree Celcius to 60 Degree Celcius including making connection as per existing complete all as per site requirment all as specified and directed by Engineer-In- Charge. Note: The cost of replacement of unserviceable parts shall be measured separately under item no. 2.01 to 2.04 here-in-after.

DC Relay

Boosting Capacitor

EMI Filter

Trimming of Tree branches along the solar panels and fencing, maintaining minimum clearance of 3 Metre from Panels at a height of 2.5 mtr above ground level upto tree height and ensuring no shadow falls on panel from 0800 Hours to 1900 Hours complete all as specified and as directed by Engineer-in-Charge.

Supply and fixing in replacement MCCB, TPN, 125 Amps, 415 Volts, 16 KA, Ics=100% Icu, with adjustable thermal and adjustable magnetic release including complete connection all as specified and as directed by Engineer-in-Charge.

Supply and fix in replacement of on grid inverter outdoor type, IP 65, with minimum 60.00 KW (matching with PV panels output) AC nominal rating (Array to Inverter Ratio 1:1), 3P, 50Hz AC power string inverter on three phase side: - Output voltage 415 (+12.5%, -20% VAC), frequency 50Hz (+3 Hz, -3Hz) Maximum current ripple 4% PP, Reactive power 0.95 inductive to 0.95 capacity, total harmonic distortion: less than 3% with overall efficiency of not less than 98% and above at full load. (IEC-61683) with all protection and controlling as per specification including suitable communication portal with SCADA for monitoring all parameter like P, PF, V, I etc (with in built or external data logging device and on line portal log-in ID and password) complete all as specified and as directed by Engineer-in-Charge.

Excavation in trenches not exceeding 1.5 metre wide and not exceeding 1.5 metre in depth for foundation, shafts, man holes, for under ground cable/ erection of poles, stays, locating fault of LT cable and stay assembly etc not exceeding 10 square metre on plan and getting out in any type of soil including dressing/ trimming of sides and levelling, grading and ramming of bottom of excavation complete all as specified and as directed by Engineer-in-charge.

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

Removing excavated material/ soil 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 specified and as directed by Engineer-in-charge.

Material and labour for providing dry river sand as in sand cushioning to cable with a layer of sand 8 cm deep before laying the cable and 15 cms deep after laying the cable (punned down to 18 cms depth after laying and stretching of cable) complete all as specified and as directed. Note: Only punned thickness of sand will be measured and paid.

Supply and laying well burnt bricks sub class "B" old size for cable protection laid flat lengthwise perpendicular to the axis of cable complete all as specified and direted by Engineer-in-Charge.

All as per serial item No 13.00 here-in-before but of cross sectional area 16 Sqmm, 4 core.

All as per serial item No 13.00 here-in-before but of cross sectional area 35 Sqmm, 3.5 core.

All as per serial item No 13.00 here-in-before but of cross sectional area 95 Sqmm, 3.5 core.

All as per serial item No 13.00 here-in-before but of cross sectional area 150 Sqmm, 3.5 core.

All as per serial item No 13.00 here-in-before but of cross sectional area 400 Sqmm, 4 core.

Providing crane/ hydra/ excavators/ tractors/ trolley etc as required at site for shifting of heavy items/ excavation/ cleaning areas etc complete all as specified and as directed by Engineer-in-charge.

Material and labour for spraying herbicide (Round up) on area to remove unwanted vegitation/ grass at various locations as directed by Engr-in-Charge. Note:- 1. there should be no vegitation growth in the sprayed area within 30 days of spraying. 2. contrator shall repeat the spray with no extra cost to government, if vegitation growth is seen on the sprayed area within 30 days.

Supply Only PVC braided hose pipe size 01 Inch complete all as specified and as directed.

supply and fixing GI Steel water tubes, of size 20 mm bore, ISI marked, medium grade with all fittings such as bends, elbows tees, pieces, connections, back nuts, diminishing pieces caps, plugs and unions etc, laid in trenches or in floors complete including taking out of old unserviceable GI pipes complete all as spcified and as directed by Engineer-in-charge.

All as per Serial Item No 22.00 here-in-before but of size 25 mm bore.

All as per serial Item No 22.00 here-in-before but of size 50 mm bore.

S&F in replacement Gun metal globe or gate valves of size 20 mm bore, ISI Marked, with iron wheel head, screwed both ends for iron pipe complete all as spcified and as directed by Engineer-in-charge.

All as per Serial Item No 25.00 here-in-before but of size 25 mm bore.

All as per Serial Item No 25.00 here-in-before but of size 50 mm bore.

S&F Rotational moulded PVC, Triple layered, water storage tanks of capacity 2000 litre (cylindrical vertical with closed top), ISI Marked, hoisted and fixed in position all as specified in SSR Part I, including all fitting such as connection pieces with GI tank nipple for inlet, outlet, washout and overflow etc and including 20 mm size Ball valves high pressure of PTMT with epoxy coated aluminium rod & high density plastic ball screwed for iron pipe including dismantling of existing water tank and removing from site complete all as specified and as directed by Engineer-in-Charge.

Material and labour in replacement of broken earth pit of size 300 x 300 x 300 mm made of PCC 1:2:4 type B-1 (using 20 mm graded crushed stone aggregates), and earth pit cover made out of RCC 1:2:4 type B-1, cover reinforced with 8 mm dia TMT bars @ 100 mm centre to centre both ways with handle made out of 8 mm dia bar, watering arrangement with funnel and wire mesh and including reconnecting of earth lead of any type with new nuts, bolts and washers as required at site with testing result all as specified and as directed by Engineer-in-Charge.

Supply and fixing in replacement of Surge protection Device (SPD), DC 1000 Volt in DC Distribution box in Solar Inverter complete all as specified and directed by Engineer-in-charge.

Supply and fixing in replacement of DC Fuse, 15 Amp in Surge protection Device (SPD), DC 1000 Volt in DC Distribution box in Solar Inverter complete all as specified and directed by Engineer-in-charge.

Supply and fixing in replacement of Surge protection Device (SPD), AC in AC Distribution box in Solar Inverter complete all as specified and directed by Engineer-in-charge.

Supply and fixing in replacement of PVC insulated Solar DC cable, copper conductor, 6 sqmm, 1.8 KV, DC volt for solar plant complete all as per specified and as directed by Engineer-in-Charge.

Supply and fixing in replacement of cable connector for Solar DC cable, 6 sqmm, 1.8 KV, DC volt for solar plant complete all as per specified and as directed by Engineer-in-Charge.

Material and labour for Earthing complete with galvanized steel plate earth electrode 60 cm x 60 cm x 6 mm thick surrounded by char coal and salt buried directly in ground vertically in pit of depth not less then 2.25 metre below ground level with top edge of the earth plate at depth of not less than 1.5 metre below ground level surrounded from all sides by char coal dust and common salt in alternate layers of 15 cm depth and earth plate electrode connected to 25 x 4 mm galvanised earth lead strip by means of GI nuts bolts, check nuts and washers and connected to earthing test point drawn through 40 mm bore GI pipe light grade for protection of GI earth lead wire including 20 mm bore GI pipe medium grade for watering, GI funnel, PCC earth pit (1:3:6) type C-2 with CI frame and RCC cover all as shown in electrical Plate No 3 on SSR Part - I including testing on completion including taking down old u/s earthing complete all as specified and directed by Engineer-in-charge.

Material and labour for Earthing complete with galvanized steel plate earth electrode 60cm x 60cm x 6mm thick surrounded by char coal and salt buried directly in ground vertically in pit of depth not less then 2.25 metre below ground level with top edge of the earth plate at depth of not less than 1.5 metre below ground level surrounded from all sides by char coal dust and common salt in alternate layers of 15 cm depth and earth plate electrode connected to galvanised earth lead wire of 4.0 mm dia by means of GI nuts bolts, check nuts and washers and connected to earthing test point drawn through 15 mm bore GI pipe light grade for protection of GI earth lead wire including 20 mm bore GI pipe medium grade for watering GI funnel PCC earth pit (1:3:6) type C-2 with CI frame and RCC cover all as shown in electrical Plate No 3 on SSR Part - I including testing including taking down old u/s earthing complete all as specified and directed by Engineer-in-charge.

Earthing complete with copper earth plate 600 mm x 600 mmx 3.15 mm thick surrounded by charcoal and salt, buried directly in ground vertically in a pit of depth not less than 2.25 metre below ground level with top edge of the earth plate not less than 1.5 metre below normal ground level, connected to 20 x 3 mm Copper strip earth lead by means of GI nuts bolts, check nuts and washers and connected to earthing test point drawn through 40 mm bore GI pipe light grade for protection of GI earth lead wire including 20 mm bore GI pipe medium grade for watering, GI funnel, PCC earth pit (1:3:6) type C-2 with CI frame and RCC cover all as shown in electrical Plate No 3 on SSR Part - I including testing on completion including taking down old u/s earthing complete all as specified and directed by Engineer-in-charge.

Supply and fixing in replacement Copper strip 20 x 3 mm from earth electrode to test point complete all as per specified and as directed by Engineer-in-Charge.

Supply and fixing in replacement GI earth strip 25 x 4 mm from earth electrode to test point complete all as per specified and as directed by Engineer-in-Charge.

Supply only Telescopic Wiper 9 metre long for cleaning of solar panels complete all as per specified and as directed by Engineer-in-Charge.

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