CA NO. CWE/AMB/UTILITY/T-09 OF 2021-22 REPAIR/ MAINT OF POWER TRANSFORMER AND EHV NETWORK SYSTEM AT 66 KV MRS UNDER GE (UTILITY) AMBALA CANTT

Amount

Supply and fixing in replacement of UNSV 11KV rotating type Air Break Isolating switch 400 Amps, Horizontal mounting triple pole mechanically operated horizontal type 12 insulators with galvanised frame, operated from ground level including operating rod, handle locking mechanism current carrying capacity 400 Amps,11000 volt fixed on existing channel with nuts, bolts and washers including taking down of old unservicable isolator from steel structure complete all as specified and directed.

Supply, installation ,testing and commissioning of 66 KV class station heavy duty metal oxide gapless type LA with use of effective ground neutral system with insulating base including surge monitors for 66 KV with all accessories to meet the requirement as under including taking down of old complete all as specified and directed:- (a) Nominal system voltage – 66 KV (rms) (b) Highest system voltage – 72.5 KV (rms) (c) MCOV 52 KV (d) Nominal discharge current – 10 KAP (e) Line discharge – Class3 (f) High current withstand – 100 KAP (g) Max residual voltage- 165 KVp at 01 KAP

Material and labour scraping of old bubbled paint from Isolator box approximate size 2.50 x 2.50x 1.50m at 66 KV sub station including preparation of surface and re-painting with spray gun with one coat of synthetic enamel grey paint and one coat of black paint to the angle iron frame after prepration of old steel surface etc complete all as specified and directed.

Material and labour taking down by scraping and preparation the surface from the CTs & PTs tower steel structures approximate size 9 x 2.2' x 2.2' at 66 KV sub station including repainting one coat of super quality of aluminium paint with spray gun, etc complete all as specified and directed.

Dismantling and taking down old unsv conductor incl zebra conductor from 66 KV sub station and material and labour aluminium conductor steel reinforced (ACSR) weasel/Zebra for 66 KV sub station including fixing, stretching on Steel structures and proper noseling with binding wire with insulator of any size as required at site complete all as specified and as directed.

Material and labour servicing of 3 Phase 0.35 HP motor installed in automatic functioning of EHV isolator 66 KV, including greasing and complete maint of motor, switches, contactors and other acessories installed in isolator box complete, including taking down and replacement of defective spare as per existing complete all as specified and directed. Note-Automatic testing of isolators shall be carried out by contractor infront of Engr-in-charge and the cost of testing included in the quoted rate by the contractor.

Material and labour in replacement potential transformer (PT) as in repair draw out type of ratio 66KV/3/110V/3V, VA Burden = 100 VA CL:1:0, 50VA CL:3P including suitable capacity of HT fuses. The voltage transformer set as suitable for 66KV incoming feeder (suitable as with same model and capacity installed at 66KV MRS) including re-wiring and testing complete all as specified and directed.

Supply, install, testing and commissioning of 72.5 KV outdoor incomer CT transformer 150/75/ 1-1-1-0.5773 for metering and operation Oil cooled insulation level 140 KV/325 KVp short time current rating 50 KA / 1 second, 6 core dia class 60 VA / 0.2 class with oil as per IEC 60044.10 including taking down of existing unservicable CT complete all as specified and directed.

Supply and fixing in repair/replacement Bimettallic Clamp or T clamp or CT Clamp or Cross Clamps for connection of Zebra conductor with Cable end, CTs, NCTs, Transformer HT Bushes complete all as specified and directed. Note : Each clamp will be considered as one item of work.

Supply and fixing in repair/replacement of switch Air break gang operated triple pole mechanically operated vertical type 12 insulators and with galvanized frame, operated from ground level including operating rod, handle locking mechanism, current carrying capacity 400 Amps 11000 Volt fixed on existing channel with nut bolt and washers, incl taking down of old unsv GOD from pole structures complete all as specified and as directed.

Material and labour in replacement of structural mild steel channel, angle iron, flat iron and brackets etc for cross arms, bracings, supports, D-clamps, stiffeners, eye hooks, pole clamps, stay clamps, and back plates including nuts, bolts and washers, welding, bending cold or hot, drilling holes for bolts in any shape or size as indicated or directed and inclusive of one coat of red oxide primer ,one under coat and one finishing coat of aluminum paint complete, all as specified and directed. Note: Insulators to be measured and paid for separately.

Supply & Fixing in replacement Insulator pin type, porcelain, vitreous, white, brown or green 150mm height and 150mm dia including one galvanized mild steel spindle, two galvanized iron washers and one galvanized iron nut for 11000 volts grade complete, all as specified and directed.

Supply & Fixing in replacement disc type insulator porcelain vitreous brown 145 mm height and 255 mm dia ball & socket type white, brown or green single disc assembly for tension with tension clamp for conductor working pressure 11000 volts grade complete all as directed.

Material and labour taking down by scraping of old bubbled paint from the 66 KV transformer including preparation of surface and re-painting with spray gun with one coat of synthetic enamel grey paint and one coat of black paint to chassis, rollers, frame work and plate form etc. complete all as specified and directed.

Supply, Laying, connecting including testing XLPE insulated, screened, PVC bedded galvanised steel strip or wire armoured, electric power cables (heavy duty) and over all sheathed with aluminium conductor heavy duty 185 Sqmm 3 Core, 11000 volts grade laid in trenches, floors, ducts passing through pipe for road crossing, Including taking down of old unserviceable UG cable from trenches etc complete, all as specified and directed. (Excavation, earth work, brick protection sand cushioning and GI pipe etc shall be measured & paid for separately).

Supply, Laying, connecting including testing XLPE insulated, screened, PVC bedded galvanised steel strip or wire armoured, electric power cables (heavy duty) and over all sheathed with aluminium conductor heavy duty 400 Sqmm 3 Core, 11000 volts grade laid in trenches, floors, ducts passing through pipe for road crossing Incl taking down of old unsv UG cable from trenches etc complete, all as specified and directed. (Excavation, earth work, brick protection sand cushioning and GI pipe etc shall be measured & paid for separately).

Material and labour chemical earthing with Copper earth plate 90cmx60cmx5mm thick surrounded by charcoal and salt, buried directly in ground vertically in a pit of depth not less than 2.25m below ground level with top edge of the earth plate not less than 1.5m below normal ground level, connected to copper earth strip 50x6mm by means of bolts, nuts, checks nut and washers made out of galvanized iron or steel, earth wire protected by galvanized steel pipe 80mm bore (light grade) and connected to main switch or main control board all as shown in electrical plate No.3 of SSR Part-I and including necessary excavation and earth work. The rate also include charcoal and salt in alternative layers 15 cm each layer upto top of electrode plate, 20mm dia GI pipe (light grade) for watering, protection pipe, funnel, wire mesh, RCC cover, etc including testing on completion and taking down of old earthing as existing complete all as specified and directed. Note : (i) The rates for earth work, GI protection pipe, funnel, wire wesh, RCC cover, etc shall be deemed to be including in quoted rates. RCC cover shall be 50mm thick in 1:2:4 type B-1 using 8mm bars @10cm c/c both way. (ii) Test result of earth resistance of connected chemical earth pits shall be less than 0.5 ohms.(iii) The copper plate and copper strip shall be brazed and never be fastened using nuts and bolts.(iv) Alternate layers of charcol and saly, five layers each upto top of copper plate after which a 50mm layer of magnesium sulphate to be laid at top and balance volume to be filled with soil. These three items shall not be mixed and laid in layers.

Supply and fixing in repair Fiber cable top cover as on existing cable duct (anti corrosive type) of size not less than 450mm wide and 5mm thick including making drilling, fixing on existing channel with support angle and providing suitable size of steel screws and washers complete, all as specified and directed.

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 etc not exceeding 10 Square metre on plan and getting out in soft/loose soil complete all as specified and as directed.

Returning, filling in, including spreading, levelling, watering and well ramming in layers not exceeding 25 cm thick in soil of any description, complete all as specified and as directed..

Removing excavated soil to a distance not exceeding 50 metre and deposited where directed at a level not exceeding 1.5m above the starting point complete, all as specified and directed.

Supplying and laying un-reinforced precast cement concrete cable cover, class HVP, Type 1 with peak, size 300mm x 180 mm x 40 mm, complete, all as specified and directed.

Material and labour for 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:- Punned thickness 18cm shall be measured for payment purposes.

Material and labour for Cable jointing kit for 11 KV (Earthed) grade cable for outdoor end termination heat shrinkable type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 185 sq mm including joint testing and taking down of old joint as existing complete all as specified and directed.

Material and labour for Cable jointing kit for 11 KV (Earthed) grade cable for outdoor end termination heat shrinkable type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 400 sq mm including joint testing and taking down of old joint as existing complete all as specified and directed.

Supply and fixing in replacement differential relay of 66 KV/11 KV transformer control panel, 3 phase, in-1A, F=50 Hz, EL=24-240 Volts, incl dismantling of old unseviciable differential relay and necessary setting of new relay with all connected tripping mechanism/power transformer control relays and submit necessary test report complete all as specified and directed.Make:- Model No RET 615 of ABB or equivalent of makes as specified in Appx attached.

Supply and fixing in replacement of Pole assembly complete set with vacum bottle Article No IVYN400901-LA suitable for VD-4 Breaker including servicing of complete breaker and testing to the entire satisfaction of Engr-in-Charge complete all as specified and directed.

Supply and fixing Tulip contacts as in repair (12 fingers) Article No GCE8385888R0102 suitable for VD 4 Breaker including taking down of old contact and complete all as specified and directed.

Supply and fixing TEK LED Lamp 110 V DC Red as in repair Cat Part No IVYN452291-007 of ABB or other makes given in Appendix 'B' including taking down of old lamp and complete all as specified and directed.

Supply and fixing TEK LED Lamp 110 V DC Amber as in repair Cat Part No IVYN452291-008 of ABB or other makes given in Appendix 'B' including taking down of old lamp and complete all as specified and directed.

Supply and fixing TEK LED Lamp 110 V DC Blue as in repair Cat Part No IVYN452291-009 of ABB or other makes given in Appendix 'B' including taking down of old lamp and complete all as specified and directed.

Supply and fixing TEK LED Lamp 110 V DC Green as in repair Cat Part No IVYN452291-010 of ABB or other makes given in Appendix 'B' including taking down of old lamp and complete all as specified and directed.

Supply and fixing TEK LED Lamp 110 V DC White as in repair Cat Part No IVYN452291-011 of ABB or other makes given in Appendix 'B' including taking down of old lamp and complete all as specified and directed.

Supply and fixing in replacement closing Coil 110 V AC/DC as in repair Cat Part No 1VCR004291 G0001 of ABB or other makes given in Appendix 'B' including taking down of old coil and complete all as specified and directed.

Supply and fixing in replacement tripping Coil 110 V AC/DC as in repair Cat Part No 1VCR004289 G0001 of ABB or other makes given in Appendix 'B' including taking down of old coil and complete all as specified and directed.

Supply and fixing as in repair Racking Mechanism complete set Suitable for VD4 Breaker complete all as specified and directed.

Material and labour in replacement for differential current transformer, rating 750/0.577A, Frequency 50 Hz, Class PS, including taking down of old unserviceable CTs and necessary wiring, setting installation, testing, checking of new CT, complete all as specified and directed.

Supply and fixing as in repair Gear motor assembly 24V DC Motor + Motor Kit, Article No NHP201491R2 suitable for Safe Plus Breaker complete all as specified and directed.

Supply and fixing as in repair Tulip contacts (4 fingers) suitable for ZN1 breaker complete all as specified and directed.

Material and labour heating, filtration and dehydration of transformer oil as per IS : 10028 (Part-III) 1981, Para 5.2 (obtained from 66KVA transformer installed at various sites) with dehydration/ filtration plant to achieve desired dielectric strength complete, all as specified and directed. Note:- (a) The cost of dehydration machine and other tools and plants required for heating, filtration and dehydration of transformer oil shall be included in the quoted rate . (b) The contractor shall arrange electric supply to run the dehydration machine and cost of the same shall be borne by the contractor and cost included in the quoted rate. (c) The contractor shall inform the Eng-in-charge in writing, two day in advance for Schedule of dehydration / repair of transformer in order to plan shut down. (d) The contractor shall arrange labour, tools and plants and other stores in a manner to restore the electric supply within stipulated time i.e maximum within 08 hrs time period. (e) Dehydration and topping up of oil shall be carried out in front of concerned executives and necessary test report be submitted duly signed by the contractor and Engr-in-charge (f) Any loss of transformer oil during the process of dehydration, shall be made good by the contractor at his own expenses.

Supply and fixing in repair/replacement of Battery 2V,100Ah dry cell type for breaker relays of 66/11 KV HT SF6 & VCBs including standardized stand rack for batteries and fixing in switch room floor complete, all as specified and directed.

Supply and pouring new transformer oil as per IS : 335 (1993) for transformers installed at various site for topping up after dehydration to achieve the di electric strength 60 KV at 4 mm gap including draining of old oil complete all as specified and directed. Note : Transformer oil shall be brought at site in sealed container from the original manufacturer and shall be opened in front of Engr-in-charge, Container shall be deposited by the contractor to the deptt, which will be returned after completion of conract.

Supply and Fixing in replacement of UNSV 72.5 KV rotating type Air Break Isolating switch 400 Amps, Horizontal mounting, 66 KV, input voltage, 72.5 KV rated peak with stand capacity 79KA, overall height 770mm having the following specifications complete all as specified and directed:- [a] EC Copper Contact Element - [b] MS Flat 'U" - 50 x 6 mm [c] EC Copper Flat terminal (Bent at 110) 1-1/2" x 1/4" [d] Aluminium connector as per drg No 454/79 [e] MS Flat "L" - 100 x 6mm [f] MS Angle - 50 x 50 x 6mm [g] EC Copper blade 1-12" x 1/4"x40-1/2" [h] Bearing assembly as per drg [j] MS Flat - 100 x 6mm x 10" long [k] MS Angle top - 400 x 40 x 60mm size [l] MS Channel - 100 x 50 [m] 72.5 KV post insulator like HTIF - 3031

Material and labour for straight through cable joint (heat shrinkable) suitable for 3 core ,11 KV (Earthed) Under ground, XLPE cable of size 185 to 400 sq mm including joint testing and taking down old UNSV HT joint, complete, all as specified and as directed.

Material and labour highly HT insulating opaque red coloured ANTI TRACK COMPOUND SPRAY 320 of MOSIL LUBRICANTS that forms flexible chemical resistance coating to class H winding for chemical apparutus in 500ml spray bottle to protect HT equipment complete, all as specified and as directed.

Supply and fixing in replacement of spout of VCB panel for ABB VD4 model from HT panel of 66 KV / 11 KV substations complete all as specified and directed..

Supply and fixing in replacement of strip heaters 80 watt from HT panel of 66 KV / 11 KV substations complete complete all as specified and directed..

Material and labour spraying chemical (Round up) on area to remove unwanted vegitation/grass at various location as directed. Note: All equipment required in the spray of chemical included in the quoted rate in the item.

Supply and fixing in replacement potential transformer of rating 11000/110V size and model as suitable for existing PTs installed at 66 KV MRS complete, all as specified and as directed.

Supply and fixing in replacement current transformer of rating 500-250/5A size and model as suitable for existing PTs installed at 11 KV MRS complete, all as specified and as directed.

Supply and fixing in repair PT bushing of capacity 11KV suitable for existing PTs installed at 11 KV incommer VCBs at 66 KV MRS complete, all as specified and as directed.

Supply and fixing in repair PT fuse of capacity 11KV suitable for existing PTs installed at 11 KV incommer VCBs at 66 KV MRS complete, all as specified and as directed.

Supply and fixing in replacement of master tripping relay of auxillery voltage 24V/110V AC/DC of make ABB including fixing in HT panels of 66KV MRS and 11 KV sub stations with connection as per drawing of OEM complete, all as specified and as directed.

Supply and fixing in replacement of supervision relay of including fixing in HT panels of 66KV MRS and 11 KV sub stations with connection as per drawing of OEM complete, all as specified and as directed.

Note:- Amount of credit of Rs. 99430.00 for retrieved materials is mentioned in Schedule of Credit Page Nos. 18R of tender documents in pdf form which will be deducted offline while acceptance of tender.

Raman Electric Trading Co

R D Bansal