CWE/GGN/FT-11/2024-25 REPAIR/MAINT OF HT DISTRIBUTION NETWORK, ISOLATORS, 11 KV BUS BAR, PANEL, AVR AND OTHER CONNECTED WORKS AT AF STN NARAINA AND BASANT NAGAR UNDER GE (AF) FARIDABAD

Amount

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 not exceeding 25 cm 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 08 cm layer below the cable and 15 cm layer above the cable complete all as specified and directed by Engr-in-Charge. Note: Sand Cushioning thickness will be considered 15 cm duly compacted for the payment purpose.

Supply and Laying precast concrete cover class HV type 1 flat size 300mm x180mm x40mm laid in trenches for cable protection complete all as specified and 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 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 120 sq. mm 3 core all as specified and as directed.

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

M&L Cable jointing kit for 11 KV (Earthed) grade cable for indoor termination Cold shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 120 Sqmm to 185 Sqmm.

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

M&L Cable jointing kit for 11 KV (Earthed) grade cable for straight through Cold shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 120 Sqmm to 185 Sqmm.

M&L Cable jointing kit for 11 KV (Earthed) grade cable for outdoor termination cold shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 70 to 95 Sqmm

M&L Cable jointing kit for 11 KV (Earthed) grade cable for outdoor termination Cold shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 120 Sqmm to 185 Sqmm.

Repair maintainance of transformer of capacity 125 to 160 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/ component ,including replacement of worn out spare parts etc, if required all as specified and directed. Note:- The replacement spare parts shall be measured and paid separately.

Repair maintainance of Package type substation of 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/ component ,including replacement of worn out spare parts etc, if required all as specified and directed. Note:- The replacement spare parts shall be measured and paid separately.

M&L for Disconnecting all the electrical connections from H.T. and L.T. side of unserviceable transformer of cap upto 250 to 630 KVA i.e. Jumpers/cable from the cable end box or bushings & earthing terminal of the transformers including taking down, loading, unloading of transformer & transportation by vehicle from substation to the repairing workshop including reinstallation, commissioning and testing complete.

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

Supply only Synthetic gasket sheet for fixing top cover as per site requirement

Supply only LV brass metal part complete with porcelain bushing 1.1 KV for upto 160 KVA transformer set of 04 nos

Supply only LV brass metal part complete with porcelain bushing 1.1 KV for above 160 to 630 KVA transformer set of 04 nos

Supply only Tempertaure gauge 0-100 degree celcius suitable for distribution transformer 11/.433 KVA

Supply only Silica gel filled in breather cup assembly of transformer above 100 KVA and upto 630 KVA

M&L for Dehydration including filteration and cleaning of transformer oil by centifugal dehydration machine till to achieve Di-electric strength 50 KV at 2.5 mm gap testing of sample before and after dehydration and filteration all as specified and 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 maintainance of HT VCB panel, upto 1000 Amps capacity detection of defective components, replacement of worn out parts and servicing/ cleaning of mechanical components, by the representative of authorized service contre of VCB Mfr's, Re insertion of trolly in HT panel, including calibration test ,relay test and testing for smooth operation all as specifiedand as directed. Note:- Worn out parts shall be measured & paid separately as supply only under relevant items.

Supply only spare part of HT VCB 800 Amp to 1000 Amps of as following:-

Supply only Isolating Contact Assembly 800 Amp to 1000 Amps

Supply only Vaccum interruptor 2.4" dia

Supply only Spring Charging Motor with motor & operating coils

Motor Cut limit Switch

TNC switch

Auxillary switch ( 7 NO +7 NC)

Repair maintainance of oil cooled servo voltage stablizer of capacity 400 KVA to 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 all as specified and directed. Note:- The replacement spare parts shall be measured and paid separately.

RC Network

AC Synchronous Motor 10 Kg

Spring loaded finger

Microproccessor Based eletronic control board

Auto Transformer 125 Amp 3 Phase ,400 KVA

Auto Transformer 150 Amp 3 Phase ,630 KVA

Supply and fixed in repair,ACB 1250 Amp ,3 pole adjustable type 36 KA including under voltage/over voltage relay,adjustable overload setting and short circuit setting all as specified and directed.

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

M&L for detecting of fault in HT UG cable any size with fault locator equipment to locate the fault in HT cable of length not less than 50 RM . Note :- (a) The fault which is detected through cable fault locater will only be paid under this item (b) Charges of cable fault locator and DG set including transportation charges deemed to be included in the quoted rate. (c) Earth fault locator will be provided by the contractor for even single fault and no dealy on this account will be acceptable otherwise penality will levied Rs 1000/- per day. (d) Necessary testing of cable after making joint will be deemed to be including in the cost of relevent item. However necessary earth work cable cutting , joint making Joint will be paid under relevant item.

M&L danger notice board/plate of 1.6mm thick mild steel sheet vitreous enameled white with letter, figures and conventional skull and bones in signal red colour and fixed with MS clamps, nuts and bolts of approved size of HT 25 x 20 cm size.

Replacement of breather assembly complete with silica gel for transformer upto 630 KVA of any make, type and capacity as directed by Engg-in-charge.

Replacement of unserviceable oil level indicator, including replacing necessary nuts, bolts and gasket complete for transformer of capacity 400 KVA all as per existing and havig level marking 1/4, 1/2, 3/4 and full all as specified and directed

Repairing/welding of leaking fins/body of transformer and making the same leak proof by proper welding all as directed by Engineer-in-Charge

Supply & fixing LT bushings 433V of suitable size for outdoor/ indoor type transformer of the capacity as under:-

(a) Above 100 KVA upto 250 KVA

(b) Above 250 KVA upto 630 KVA

Supply & fixing HT bushings 11KV of suitable size for outdoor type transformer of capacities as under:-

(a) Above 100 KVA upto 250 KVA

(b) Above 250 KVA upto 630 KVA

Supply & fixing brass stud (for LT 433V side) of suitable size complete with one check nut, two nuts, washers and rubber seal, all as per sample for outdoor/indoor type transformer of the capacity as under:-

(a) Above 100 KVA upto 250 KVA

(b) Above 250 KVA upto 630 KVA

Supply & fixing brass stud (for HT 11KV side) of suitable size complete with one check nut, two nuts, washers and rubber seal, all as per sample for outdoor/indoor type transformer of the capacity as under:-

(a) Above 100 KVA upto 250 KVA

(b) Above 250 KVA upto 630 KVA

M&L for Chemical earthing , Design development supply commissioning and testing EHCC certified ground terminal earthing system hollow tube solid bar CCPRI tested for sensitive signal/Electrical equipments highly anti corrosive long life severe wear conditions in the earth pit and of standard size ISI marked copper tube out side secondary conductor of 50mm dia and main primary conductor inside 25mm dia 3000mm length ready to install with suitable connecting terminal confirming to IS:3043 1987 specification highly conducive packing material to be filled in earth pits for providing uniform low resistivity anti corrosive hygroscopic medium around the earth system for improving the efficency of current dissipation 20 Kg per bag (3 bag per kit) min or sufficeient quantities required as per site complete incl PCC pits of inside dimension 0.5x0.5x0.5m and suitable cover complete all as specified and directed. Note: (i) Rate of Earth work, Earthing electrode, all connections, nut-bolts, washers, complete labour, testing, Earth lead/strip upto 7.5 mtr, char coal dust, common salt, porcelain insulator,PCC earth Pit, CI frame ,RCC cover, funnel with wire mesh are incl in quoted rate and watering pipe, earth lead protection pipe, test poit, and earth lead exceeding 7.5 mtr are measured and paid separately.

M&L for earthing complete with galvanized steel plate earth electrode 60cmx60cmx6mm thick surrounded by char coal and salt buried directly in ground vertically in pit of depth not less then 2.25 mtr below ground level with top edge of the earth plate at depth of not less then 1.5 mtr 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 4.0mm dia at two points by means of GI nuts bolts, check nuts and washers and connected to earthling test point drawn through GI pipe for protection of earth lead wire and arrangement of watering pipe incl 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 and dismantling ,taking down old unser earthing all as directed by Engr-In-Charge. Note: (i) Rate of Earth work, Earthing electrode, all connections, nut-bolts, washers, complete labour, testing, Earth lead upto 7.5 mtr, char coal dust, common salt, porcelain insulator, PCC earth Pit, CI frame ,RCC cover, funnel with wire mesh are incl in quoted rate and watering pipe, earth lead protection pipe, test poit, earth lead exceeding 7.5 mt are measured and paid separately.

Supply and fixing in repair of Earth continuity strip or main earthing lead fixed to wall on batten or recess or chases or buried in ground or drawn in conduit/pipe or fixed to poles or fixed on wall with porcelain insulator or any other indicated situation for loop earthing etc. as required 20x3.15 mm copper strip complete all as directed by Engr-in-Charge.

Supply and fixing in repair of Earth continuity strip or main earthing lead fixed to wall on batten or recess or chases or buried in ground or drawn in conduit/pipe or fixed to poles or fixed on wall with porcelain insulator or any other indicated situation for loop earthing etc. as required 25x4 mm GI strip complete all as directed by Engr-in-Charge.

M&L for Preparation of old painted surfaces and cooling coils/ fins of transformers of following capacities by removing oil marks using chemical or hot blow lamp. Spray painting to prepared surfaces using synthetic enamel paint of superior quality of colour as approved by GE / AGE E/M as per standard engineering practice with two coats, writing SM No, MES No, Make and capacity with white paint having height of each letter not less than 2.5cm and width not less than 1cm all as required and directed by Engr-in-Charge:-

(a) Above 100 KVA upto 250 KVA

(b) Above 250 KVA upto 630 KVA

M&L for Air break gang operated switch outdoor type triple pole mounted on 12 insulators, mechanically operated suitable for vertical installation single break provided with locking arrangement consisting of MS channel, HT post top insulators contacts for copper alloy high pressure, heavy duty contact assembly, operating rod 20mm dia GI pipe medium grade complete incl drop out fuses confirming to IS-818 rated voltage 11KV and for current rating 400 amp incl taking down old GOD of any type any size.

M & L Lightning arresters expulsion type complete with all fittings, transmission class, discharge capacity 65 kilo amp suitable for 11 KV all as specified and directed.

M&L for 80 mm GI tubing light grade galvanized with all fittings for protection to U/G cable along poles, walls, flows, road crossing including necessary cutting of road and making good in original surface where required incl taking down old u/s existing .

M&L for 50 mm GI tubing light grade galvanized with all fittings for protection to U/G cable along poles, walls, flows, road crossing including necessary cutting of road and making good in original surface where required incl taking down old u/s existing.

S&F in Replacement of MCCB 3 Pole, 415 V, with Microprocessor release 630 Amps with breaking capacity 50 KA complete all as spd and directed.

S&F in Replacement of MCCB 3 Pole, 415 V, with Microprocessor release 400 Amps with breaking capacity36 KA complete all as spd and directed.

S&F in Replacement of MCCB 3 Pole, 415 V, with Microprocessor release 315 Amps with breaking capacity36 KA complete all as spd and directed.

M&L for Test point terminal block made of gun metal or phosphorus bronze size 75x75x25mmdrilled and screwed including 3 nos. 8mm dia 25mm long hex. head screw all as specified and as directed .

M&L for defect rectification in HT 11000 volts cable of size 120 Sqmm to 50 Sqmm by locating fault with the help of electronic fault locator machine comprising of surge generator pulse ECHP fault locator with high frequency and distance calculation etc. Excavation and earth work are included in the quoted rate complete all as specified and directed.

M&L sillica gel suitable for transformer 11 KV all as specified and as directed by Engineer-in-charge

S&F in replacement digital type Ampere Meter suitable for 11 KV RMU /VCB panel to Check the outgoing load connections with CTs & taking out old unservicable meter from panel completete all as specified and directed by Engr in Charge.

S&F in repairs of indoor type 3 phase 11KV/110V potential transformer, 12KV, 50 Hz, earthed type, draw-out type with accuracy class 0.5 for metering & protection, rated burden both winding 100VA, hermetically sealed to eliminate breathing and prevent air & moisture, secondary terminal should be partitioned so as to house the metering terminals separately from protection & various terminal connectors providing sufficient earth clearance complete all as specified and directed by Engr-in-charge.

S&F in repairs of 11 KV current transformer, cast resin type, 50 Hz with ratio of 600-400/5 Amps having protection & metering core, 15 VA burden or as matching with existing, class 1.0 of minimum breaking capacity 13.10 KV for 1.0 second complete all as specified and directed by Engr-in-charge.

S&F in repairs of master tripping relay suitable for protection/tripping of HT 11 KV VCBs Panel including carry out necessary modification in existing panel complete all as specified and directed by Engr-in-charge and directed by Eng-in-Charge.

S&F in repairs of electromechanical type over current relay (inverse) type, CDG type with range 2.5 to 10.0 Amps in 7 steps suitable for protection/ tripping of HT 11 KV VCBs/OCBs Panel including carry out necessary modification in existing panel complete all as specified and directed by Engr-in-charge.

S&F in repairs of electromechanical type earth fault relay (inverse) type, CDG type with range 1.0 to 4.0 Amps in 7 steps suitable for protection/ tripping of HT 11 KV VCBs/OCBs Panel including carry out necessary modification in existing panel complete all as specified and directed by Engr-in-charge.

Material and labour for Preparation of old painted surfaces of steel by brushing/ cleaning stain, greasy spots with thinner, applying two coats of synthetic enamel paint by spray machine on all sides of 11 KV VCB panel including writing of MES /SM No and details of feeder as directed by Engr-in-charge on graphic plastic sheet complete all as directed .

Supplying, fixing & testing in replacement PT fuse failure relay , 50/24 Volt DC in control panel including wiring complete as directed at site

Net Contract Sum will be after deducting Sch of Credit of Rs 110321.00

M/S Anand Enterprises (BID ID -3080787)

mayur enterprises (BID ID -3086399)

YASHVI ENGINEERS (BID ID -3090784)

Ridhi engineers and builders (BID ID -3088662)

M P TYAGI ENGINEERS AND CONTRACTORS (BID ID -3090046)