REPAIR OR MAINT OF 11 KV HT ELECT INSTALLATIONS INCL CONNECTED ITEMS SUCH AS TRANSFORMERS, VCBs, CT OR PT, GOD, DO FUSES, AVR CABLES ETC AT HAFT CHINAR MIL STN UNDER GE 970 EWS

Amount

Excavation in trenches in hard/dense soil, not exc 1.50 mtr wide and not exc 1.50 mtr in depth for foundation of erection of poles, stays, laying of cables etc, complete all as specified and directed.

All as per Ser item No. 1.00 above but depth beyond exc 1.50 mtr and not exc 3.0 mtr.

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

Removing excavated soil to a distance not exc 1.50 mtr above the starting point and deposting where directed at a level not exc 1.50 mtr above, complete all as specified and directed.

M&L for dry river sand, laid in trenches for cable protection, as 15cm thick below the cable and 8cm thick above the cable, complete all as specified and directed. Note :- Punned thickness of sand shall be measured & paid.

Supplying and laying reinforced precast concrete cable cover, class HV, type 2 flat, size 380mm x 180mm x 40mm as in covering protection to the eletric cable, laid dry, flat, transversally along the length of cable on sand cushioning with width equal to length of cable cover, complete all as specified and directed.

M&L for replacement of 80mm bore GI tubing, light grade, laid in trenches, road crossing, cable protection or fixed to walls with clamps, complete all as specified and directed.

All as per Ser item No 7.00 above but 100mm bore pipe.

M&L for PCC 1:4:8, type D-2 (using 40mm graded crushed stone aggregate) as in foundation, mass concrete etc including necessary form work, complete all as specified and directed.

M&L for PCC 1:3:6, type C-1 (using 20mm graded crushed stone aggregate) as in coping etc including necessary form work, complete all as specified and directed.

M&L for 40mm graded coarse aggregate (broken stone or boulders), laying in sub station yard, complete all as specified and directed.

M&L for PCC 1:2:4 type B-1 (using 20mm graded stone crushed stone aggregate) as in coping of pole etc including necessary formwork, complete all as specified and directed.

Dismantling old and unserviceable prestressed concrete / steel poles of any type including breaking cement concrete complete and S&F and erection of new steel tubular swaged pole with cast iron base plate finial tapper plug, bolts, nuts and screws and specified type 410-SP-55 (11mtr long) in truly vertical position, 1.5 mtr length of pole above ground level shall be painted with two coats of synthetic enamel paint in strips of 30cm width, black and yellow alternatively and painting with two coats of aluminum paint over a coat of red oxide primer on rest part of pole and its connected parts, complete all as specified and directed. Note :- Earth work and PCC shall be measured and paid seperately under respective items of BOQ.

Dismantling of existing old unserviceable ACSR conductor (weasel type) of any size and any description and S&F new ACSR conductor including stringing through existing RCC/ steel poles, fixing in insulators, jumpers with polythene pipe, aluminium binding wire etc complete of different sizes, complete all as specified and directed.

S&F in repairs mild steel cross arms minimum 3 mtr for 2/3/4 pole structure, 'C' channel, bracings, supports, clamps and back plates, fabricated from structural steel, sections including nuts, bolts, washers etc and cutting to required length, bent to shape, drilling holes for bolts, fixed on poles or jointed by means of electric welding complete including painting with two coats of aluminium paint over a coat of red oxide zinc chrome primer after prepration of surface, complete all as specified and directed.

S&F in replacement disc type insulator, porcelain vitreous, brown or white, suitable for 11 KV HT working pressure of size 150mm height x 150mm dia including one galvanised mild steel spindle, two galvanised iron washer and one GI nut, complete all as specified and directed.

S&F in replacement pin type porcelain vitreous, brown of white insulator, suitable for 11 KV HT of working pressure of size 150mm height, 100mm dia including one galvanised mild steel spindle, two galvanised iron washer and one GI nut, complete all as specified and directed.

S&F in repairs cable jointing kit for 11 KV grade cable for outdoor termination, heat shrink type joint, complete with jointing material and accessories, suitable for size 3 core XLPE armoured aluminium conductor cable of size 120 to 185 Sqmm, complete all as specified and directed.

S&F in repairs cable jointing kit for 11 KV grade cable for outdoor termination, heat shrink type joint, complete with jointing material and accessories, suitable for size 3 core XLPE armoured aluminium conductor cable of size 95 to 120 Sqmm, complete all as specified and directed.

S&F in repairs cable jointing kit for 11 KV grade cable for indoor termination, heat shrink type joint, complete with jointing material and accessories, suitable for size 3 core XLPE armoured aluminium conductor cable of size 120 to 185 Sqmm, complete all as specified and directed.

S&F in repairs cable jointing kit for 11 KV grade cable for indoor termination, heat shrink type joint, complete with jointing material and accessories, suitable for size 3 core XLPE armoured aluminium conductor cable of size 95 to 120 Sqmm, complete all as specified and directed.

S&F in repairs cable jointing kit for 11 KV grade cable for straight through joint, heat shrink type complete with jointing material and accessories, suitable for size 3 core XLPE armoured aluminium conductor cable of size 120 to 185 Sqmm, complete all as specified and directed.

S&F in repairs cable jointing kit for 11 KV grade cable for straight through joint, heat shrink type complete with jointing material and accessories, suitable for size 3 core XLPE armoured aluminium conductor cable of size 95 to 120 Sqmm, complete all as specified and directed.

M&L for painting of VCB / 11 KV AVR of any description with one coat of synthetic enamel paint of standard colour code by using spray gun over the existing painted surfaces after preparing the old painted surfaces, complete all as specified and directed.

Supply, laying, testing and commissioning XLPE HT cable, PVC insulated, screened PVC bedded galvanised steel strip or wire armoured electric power cable, heavy duty with aluminium conductor, 11000 Volts grade (earthed) of size 3 Core 95 Sqmm, laid in trenches / floor / duct / fixed on poles through GI tubing, complete all as specified and directed.

Supply, laying, testing and commissioning XLPE HT cable, PVC insulated, screened PVC bedded galvanised steel strip or wire armoured electric power cable, heavy duty with aluminium conductor, 11000 Volts grade (earthed) of size 3 Core 120 Sqmm, laid in trenches / floor / duct / fixed on poles through GI tubing, complete all as specified and directed.

Restringing only existing HT 11 KV OH line / Jumpers including dismantling of existing old binding wire for tightening, complete all as specified and directed. Note :- Restringing of each wire / span shall be measured as in RM.

S&F in replacement drop out (DO) fuse unit expulsion type, outdoor, three pole, 200 Amps, suitable for HT 11 KV, comprising of insulators, steel base mounting frame, GI nuts, bolts etc with 30A, HT barrel type fuse, complete all as specified and directed.

S&F in replacement including testing and commissioning of gang operated type air break isolating switch horizontal / vertical type mounting complete, double break and operation rod of suitable length, 400 Amps capacity and suitable for 11 KV HT supply, complete all as specified and directed.

Removing of vegitation, grass, scrubs and bushes growing in sub station yard along with fencing by manually / mechanically and keep the sub station yard neat and clean, complete all as specified and directed. Notes :- (a) Unit rates quoted deemed to be included to keep the installation neat and clean through out the period of contract and each cleaning will be measured and paid separately. (b) Neccesary tools shall be arrange by the contractor without any extra cost to Govt.

M&L for cutting and trimming of tree branches of girth 25mm to 75mm to 3 mtr all around of any size, which is obstructing illumination of street light and touching LT/ HT over head line, by using required tools and plants including removing trimmed tree branches from site, complete all as specified and directed by Engineer-in-Charge. Note :- Each cleaning will be measured and paid.

S&F in replacement of synthetic insulating rubber mat, ISI Marked of size 1 mtr x 2 mtr x 2.5mm thick, suitable for 11 KV, complete all as specified and directed

S&F PVC sleeves, suitable for LT / HT ACSR conductor / jumper in any type, in R Y B colours, superior quality, inserted over the existing ACSR, complete all as specified and directed.

Taking down carefully existing 11 KV / 433 Volts distribution transformer of capacity 25 KVA to 100 KVA by disconnecting HT overhead connection / underground cables and earth strips etc. from any substation / locations (as directed by Engineer-in-Charge) using suitable capacity of crane or by any other mechanical method irrespective of type of approach available, loading in vehicle, transportation to workshop for repair and unloading carefully. Reloading the tranformer after repair and testing, transport to site and unloading including placing at given / existing position and re-commissioning the same, complete all as specified and directed. Note :- All required T&P for disonnection, connection, loading and loading including necessary petty items such as bolts, nuts etc. will be arranged by the contractor and rates for the same shall be deemed to includ in the quoted rates.

Taking down carefully existing 11 KV / 433 Volts distribution transformer of capacity 160 KVA to 500 KVA by disconnecting HT overhead connection / underground cables and earth strips etc. from any substation / locations (as directed by Engineer-in-Charge) using suitable capacity of crane or by any other mechanical method irrespective of type of approach available, loading in vehicle, transportation to workshop for repair and unloading carefully. Reloading the tranformer after repair and testing, transport to site and unloading including placing at given / existing position and re-commissioning the same, complete all as specified and directed. Note :- All required T&P for disonnection, connection, loading and loading including necessary petty items such as bolts, nuts etc. will be arranged by the contractor and rates for the same shall be deemed to includ in the quoted rates.

M&L for repair to transformer step down 11 KV / 0.433 KV of any type of capacity 25 KVA to 100 KVA, after dismantling the transformer body carefully, opening the top cover of transformer for inspection / repair, drain out the transformer oil from the tank complete, taking out the core and winding assy by disconnecting the internal connections, removing the carbon/ sludge deposit in transformer housing core, renewal/ replacement of unsv rubber bushes and washers, replacement of tap changer winding and thimbles, replacement of silica gel, replacement of top cover gasket set including pasting with pasting material, replacement of worn out nuts and bolts, replacement of unserviceable LT & HT bushes, cutting the burnt out winding and re-winding the same with suitable size of super enamelled copper wire as per existing guage, insulating the winding connection by using fire proof sleeve and fire proof tape, warnishing the coil, keeping the coils in electric oven chamber for 24 hrs to remove the moisture, painting of complete transformer body from outside and inside by weather proof type using spray gun, marking of MES/SM Number etc, replacement of conservator tank glass, re-installing the core and winding inside properly, making the all connection with suitable copper lugs, re-filling of dehydrated transformer oil including dehydration, re-installing the top cover after cleaning and painting of housing, conservator tank, expulsion vent etc, meggering the LT and HT side of the transformer and testing, complete all as specified and directed. Note :- Winding wire for making of coils and LT/HT bushes shall be measured & paid separately under respective item of this BOQ.

M&L for repair to transformer step down 11KV / 0.433 KV of any type, of capacity 160 KVA to 500 KVA, after dismantling the transformer body carefully, opening the top cover of transformer for inspection / repair, drain out the transformer oil from the tank complete, taking out the core and winding assy by disconnecting the internal connections, removing the carbon/ sludge deposit in transformer housing core, renewal/replacement of unsv rubber bushes and washers, replacement of top cover gasket set including pasting with pasting material, replacement of worn out nuts and bolts, warnishing the coil, keeping the coils in electric oven chamber for 24 hrs to remove the moisture, painting of complete transformer body from outside and inside by weather proof type using spray gun, marking of MES/SM Number etc, replacement of conservator tank glass, reinstalling the core and winding inside properly, making the all connection with suitable copper lugs, refilling of dehydrated transformer oil including dehydration, re-installing the top cover after cleaning and painting of housing, conservator tank, expulsion vent etc, meggering the LT and HT side of the transformer and testing, complete all as specified and directed. Note :- Winding wire for making of coils and LT/HT bushes will be measured & paid seperately under respective item of this BOQ.

Supply and filling of fresh transformer power oil of BDV not less than 60 KV for topping up of reduced level of transformer due to evaporation/ leakage/ losses due to dehydration in distribution transformer for replacement complete including draining of old unservicable transformer oil, complete all as specified and directed.

M&L for conducting oil filtration by stream line / vacuum type filter machine to remove the moisture / carbon particles to improve required BDV of oil 50 to 60 KV for 1 min for power transformer and as BDV of oil 40 to 50 KV for 1 min for distribution transformer including routine testing after filtration for any capacity of transformers / AVR / CT / PT units, complete all as specified and directed. Note :- The contractor shall be change the filter assy before starting the filtration of power / distribution transformer of any capacity in presence of Engineer-in-Charge.

Supply and replacing silica gel breather clear view type including first fill of good quality silica gel of capacity suitable for 25 KVA to 63 KVA transformer, complete all as specified and directed.

Supply and replacing silica gel breather clear view type including first fill of good quality silica gel of capacity suitable for 100 KVA to 500 KVA transformer, complete all as specified and directed.

M&L for painting the outer surface of the transformer with one coat of weather proof paint after preparing the surface dust and oil free and cleaning the bushes, name plate etc, paint free after painting including writing the MES/SM Number with white synthetic enamelled paint, for capacity of transformer 25 KVA to 500 KVA (indoor/ outdoor type), complete all as specified and directed.

M&L for earthing complete with GI earth plate of size 60cm x 60cm x 6mm thick electrode, burried directly in ground (earth pit not less then 2.25 metres deep below ground level) with top edge of the plate not less then 1.5 metre below normal ground level, conneceted to GI strip of size 32x6mm as earth lead by means of bolts, nuts, check nuts and washers of galvanised iron or steel all as shown in electrical plate No. 3 and including earth work, PCC pit and RCC cover, watering pipe 20mm dia light grade, funnel, wire mesh, charcoal dust, 40mm dia light grade protection pipe and salt etc. and connected to earthing test point and testing after completion, complete all as specified and directed.

S&F in replacement off load tap changer for distribution transformer of any make and capacity from 100-500 KVA, complete all as specified and directed.

M&L for super enamelled copper conductor wire of suitable gauge and size as per requirement for rewinding the LT transformer of any capacity and any make, complete all as specified and directed.

S&F in replacement of bush type insulator white/ brown/ green, working pressure 11000 Volts HT side, complete all as specified and directed.

S&F in replacement of bush type insulator white/ brown/ green, working pressure 433 Volts LT side, complete all as specified and directed.

M&L for servicing of 11 KV VCB / bus coupler by dismantling, cleaning, greasing the complete VCB with attached relays bus bar etc. insulation testing, setting the contact gap by measuring as required, re-assembling the VCB and re-installing back to its original position, checking and repairing the current circuit panel wiring, replacement of new spares as required complete including operational testing and commissioning, complete all as specified and directed. Note :- New spares parts shall be measured and paid separately under respective items of BOQ.

M&L for carrying out primary & secondary injection test of 11 KV indoor / outdoor type current transformer of VCB's by using standard injection test method and checking the electrical circuits for fault condition, all relay testing and proper functioning including submitting the test report, complete all as specified and directed. Note :- PIT/SIT for VCB will be carried out in 6 months intervals and each primary & secondary injection test will be measured and paid and considered as one unit.

S&F in replacement the following spares for indoor VCB 11 KV 650 A 25 KA 350 MVA as approved by GE :-

Closing coil 24/30V DC.

Tripping coil 24/30V DC.

Antipumping device 24/30V DC.

Earth fault and over current relay, L&T any model (As reqd at site).

Digital/ Analogue type power factor indicator meter.

Digital / Analogue type Voltmeter / Ammeter, 96mm x 96mm size.

LED type indicator lamp assembly.

Spout incoming side.

Spout outgoing side.

Gear system assy complete with handle for charging / discharging of VCBs.

Spring charging motor for VCBs.

Over current protection relay of ERL Model No 8431H32403 18-135V DC.

Metering and protection current transformer epoxy/resin filled of 11 KV grade of ratio 100-50/5 class = 5P, 10/1 25 VA draw out type with necessary mounting and connected items.

Vaccum incapculated bottle

Notes :- An amount of Rs. 1,29,831.00 on account of Credit Schedule for Schedule 'A' Part-II shall be deducted from total quoted amount of BOQ to arrive at the contract sum.

M/S RAJ ENGINEERS (BID ID -3154858)

M/S Noor Mohammad Shalla (BID ID -3149025)

M/s Nasir Rasool Dar (BID ID -3147712)