CWE/GGN/FT-35/2021-22 REPAIR/MAINT OF OLD UG HT CABLE, FAULT RECTIFICATION AND SERVICING OF HT EQUIPMENT IN TECH AREA AND OFFICER MESS MCC BASANT NAGAR UNDER GE (AF) FARIDABAD

Amount

Comprehensive maintainance of transformer of capacity 125 KVA by isolating ,disconnecting of input/ output, supply cable, opening of top of transformer, detecting of fault, u/s component etc, cleaning of serviceable parts/ components, including replacement of worn out spare parts etc if required, complete all as specified and directed. Note : The replacement spare parts shall be measured and paid seperately.

Repair maintainance of Package type substation transformer capcity 630 KVA by isolating, disconnecting of input/output, supply cable, opening of top of transformer, detecting of fault, including relay setting, u/s component etc, cleaning of serviceable parts/ components ,including replacement of worn out spare parts etc if required, complete all as specified and as directed. Note : The replacement spare parts shall be measured and paid seperately.

Supply only spare parts of transformer of capacity 400/630 KVA as per existing make as follows:-

Synthetic gasket sheet for fixing top cover as per site requirement

LV Brass metal part complete with porcelain bushing 1.1 KV for 400 KVA transformer

LV Brass metal part complete with porcelain bushing 1.1 KV for 630 KVA transformer

Temprtaure Guage 0-100 degree celcius suitable for distribution transformer 11/.433 KVA

Silica Gel filled in breather cup of transformer upto 630 KVA

M&L for Dehydration including filteration and cleaning of transformer oil by centifugal dehydration machine till to achieve Di-electric strength 55 KV at 2.5 mm gap testing of sample before and after dehydration and filteration complete all as specified and as directed. Note:- Contractor has to arrange the dehydration machine and testing kit without any extra cost to the deptt. Test report to be submitted after completion of job.

Supply & Filling /pouring of transformer oil of low viscosity having dielectric strength not less than 60 KV complete all as specified and as directed. Note:- Dielectric strength test shall be carried out at site before poring/filling in transformers in the presence of Engr-in-Charge on the site.

Repair maintenance of HT VCB panel, deltection of defective components, replacement of worn out parts and servicing/cleaning of mechanical components by the representative of authorized service centre of VCB manufacturer, re installation of trolley in HT panel, including calibration test, relay test and testing for smooth operation all as specified and directed. Note : Worn out parts shall be measured and paid seperately as supply only under relevant items.

Supply and fix unserviceble spart part of HT VCB 800 Amp of Make L&T as following:-

Isolating Contact Assembly 800 Amp

Vaccum interruptor 2.4" dia

Spring Charging Motor with motor & operating coils

Repair maintainance of oil cooled servo voltage stablizer of capacity 400 KVA, 3 Phase by isolating ,disconnecting of input/output ,supply cable,opening of top of voltage stablizer,detecting of fault ,u/s component in control panel /dimmerstat /PCB etc,cleaning of serviceable parts /component ,including replacement of worn out spare parts etc, if required complete all as specified and as directed. Note : Worn out parts shall be measured and paid seperately as supply only under relevant items.

Repair maintainance of oil cooled servo voltage stablizer of capacity 630 KVA, 3 Phase by isolating ,disconnecting of input/output ,supply cable,opening of top of voltage stablizer,detecting of fault ,u/s component in control panel /dimmerstat /PCB etc,cleaning of serviceable parts /component ,including replacement of worn out spare parts etc, if required complete all as specified and as directed. Note : Worn out parts shall be measured and paid seperately as supply only under relevant items.

Supply only spare parts of the Voltage stablizer 400/630 KVA as followings:-

RC Network

AC Synchronous Motor 10 Kg

Spring loaded finger

Microprocessor based electronic control board

Auto Transformer 125 Amp 3 Phase, 400 KVA

Auto Transformer 150 Amp 3 Phase, 630 KVA

S&F in replacement Copper strip 20 x 3.15mm fixed with top of insulator/saddles, fixing with screws, washer etc with help of drill machine for roof conductors and down conductors above ground and and making good disturbed surfaces of walls, floors, etc complete all as specified and as directed.

M&L for Test point terminal block made of gun metal or phosphorus bronze size 75x75x25 mm drilled and screwed including 3 nos. 8mm dia 25mm long hex. head screw complete all as specified and as directed.

Supply, installation, testing and commissioning of copper chemical earthing as per IS 3043 with size 40x6x100 mm, 3 meter long, 50mm dia outer pipe of thickness 2mm filled with highly conducting metellic compounds in gel foam and both end sealed ,eletrolytic copper earthing electrodes.The earth pits shall be filled with sufficient quantity ultra high conductive backfill compound with neccessary accessories like lockable pit cover etc complete as required as per standard practices and specifications complete all as specified and as directed. Note : The concrete pit shall be PCC 1:3:6 type C-1 40 mm thick pre cast cover slab of RCC(1:2:4) type B-1 using 20 mm graded stone aggregate reinforced with 8 mm TMT bars @ 10 cm C/C on both sides with suitable cast iron handle shall be provided in liew of cost iron cover shown in the electrical plate No.3 of MES SSR Part -1.

Supply and fixed in repair MCCB 250 Amp , 3 pole,microprocessor based ,36 KA including under voltage/over voltage relay,adjustable overload setting and short circuit setting all as specified and directed.

Supply, laying, jointing and testing XLPE insulated, PVC outer sheathed, galvanised steel strips armoured, heavy duty power cable with aluminium conductor suitable for rated voltage of 1100 Volts grade earthed system and conforming to IS : 7098 of 1995 and of size 3.5 core X 300 Sqmm and laid in trenches/ducts/pipe or on poles complete all as specified and directed.

M&L for Cable jointing kit for 11 KV (Earthed) grade cable for indoor termination heat shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 95 sqmm complete all as specified and as directed.

Supply and laying in repair XLPE insulated, screened, PVC bedded, galvanised steel strip or wire armoured, electric power cables (heavy duty) with aluminium conductor, 11000 volts, grade cross sectional area 95 sq mm 3 core complete all as specified and as directed.

M&L for fault location of HT 11 KV cable laid in trenches /ducts fault with the help of eletronic fault locating machine comprising of surge generator pulse ,ECHO fault locator with freqency distance calculator etc.Excavation in normal alluvial starta exposing the cable fault removal of deteriorated portion of the cable treating of cable of size up to 95 sqmm 3 core complete all as specified and directed.

M&L for Cable jointing kit for 11 KV (Earthed) grade cable for straight through heat shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 95 sqmm complete all as specified and directed.

Excavation in trenches not exc 1.5m wide and not exc. 1.5 depth for laying of cable/ pole or foundation and getting out in soft and loose soil complete all as specified and as directed.

Returning, filling in trenches including spreading, levelling, watering and well ramming in layers, each layer thickness not exceeding 25 cm with available and approved soil/earth complete all as specified and as directed

Removal of excavated soil to a distance not exc 50m and depositing where directed at a level not exceeding 1.5 metre above the starting point complete all as directed.

M&L sand cushioning for under ground cable 8 cm layer below the cable and 15 cm layer above the cable complete all as specified and directed by Engr-in-Charge.

Supply and Laying precast concrete cover class HV type 1 flat size 300mmx180mmx40mm laid in trenches for cable protection complete all as specified and directed.

Net Contract Sum will be after deducting Sch of Credit of Rs 39856.00

BLUE HILL ELECTRICAL AND ELECTRONICS