82629/E8 REPAIR AND MAINTENANCE TO TRANSFORMERS,SWITCH GEARS,2/4/6 POLE STRUCTURE AND CONNECTED WORKS AT AF STN THANJAVUR

Supply and laying in trenches, or fixing on walls or passing through cable duct / pipe XLPE insulated, screened, PVC bedded galvanised steel strip or wire armoured electric power cables (heavy-duty) with aluminium conductor, 11000 volts grade (earthed cable) having cross sectional area 3 core 185 sqmm including taking down old cable complete all as specified and as directed.

All as per Item No. 01 here-in-before but for cable of size 3 core 120 sqmm.

All as per Item No. 01 here-in-before but for cable of size 3 core 95 sqmm.

All as per Item No. 01 here-in-before but for cable of size 3 core 300 sqmm.

Supply and fixing/laying 100 mm bore GI tube light grade with all fittings, fixing along the electric cable in trenches or to pole / wall for protection of cable etc including taking down or up old pipe complete all as specified and as directed.

Supply and fixing/laying 80 mm bore GI tube light grade with all fittings, fixing along the electric cable in trenches or to pole / wall for protection of cable etc including taking down or up old pipe complete all as specified and as directed.

M&L for finding the HT 11 KV under ground high tension cable fault location (in any location) and marking the exact location of fault using HT fault locating equipment with route tracer complete all as specified and directed Note :- (i) The rate quoted by the contractor shall include the rate for cleaning the route for cable fault tracing, earth work and excavation with necessary T&P etc including cost of digging out the cable at the place of fault for confirmation of fault. (ii) The faults found within 50 meters of the cable length shall be measured as one fault and the rate shall be deemed to be quoted accordingly.

M&L for finding the LT under ground high tension cable fault location (in any location) and marking the exact location of fault using LT fault locating equipment with route tracer complete all as specified and directed Note :- (i) The rate quoted by the contractor shall include the rate for cleaning the route for cable fault tracing, earth work and excavation with necessary T&P etc including cost of digging out the cable at the place of fault for confirmation of fault. (ii) The faults found within 50 meters of the cable length shall be measured as one fault and the rate shall be deemed to be quoted accordingly.

M&L for cable jointing kit for 11 KV (earthed) grade cable for outdoor termination heat shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured conductor cable of size 50 to 95 Sqmm.

M&L for cable jointing kit for 11 KV (earthed) grade cable for outdoor termination heat shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured conductor cable of size 120 Sqmm to 300 Sqmm.

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 conductor cable of size 50 Sqmm to 95 Sqmm.

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 conductor cable of size 240 Sqmm to 400 Sqmm.

Material and labour for painting of HT 11 KV 2 Pole structure complete with 2 coats of aluminium paint over the existing surface after preparation of surface by scraping, scratching using wire brush and writing feeder In & Out complete all as directed.

Material and labour for painting of HT 11 KV 4 Pole structure complete with 2 coats of aluminium paint over the existing surface after preparation of surface by scraping, scratching using wire brush and writing feeder In & Out complete all as directed.

Material and labour for painting of HT 11 KV 6 Pole structure complete with 2 coats of aluminium paint over the existing surface after preparation of surface by scraping, scratching using wire brush and writing feeder In & Out complete all as directed.

S&F ACSR conductor on poles, insulators, LA including, binding wires, jointing sleeves, aluminium tap and PG clamp, aluminium thimbles etc complete work as directed and including taking out old unserviceable ACSR conductor complete all as specified and as directed.

Material and labour for Air break switch / Gang Operated Device horizontal / vertical type, triple pole, mechanically operated, mounted on nine FRP insulators and steel frame, with operating mechanism worked from ground level, with operating rod 25mm dia light grade GI pipe, suitable for current rating upto 200 Amps, HT 11 KV including taking out old unserviceable one and connecting up with all cables complete with locking arrangement all as directed .?5
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硅慣慶楴湯椠牴湥档

es in soft/loose soil not exc. 1.5 metre wide and not exc. 1.5 metre in depth and getting out for taking up / laying under ground electric cable or for pole etc complete all as specified and as directed. Note :- Mechanical excavation is not allowed in this Station only manual excavation allowed.ð
Returning and filling in two parts ie. using riddled soil obtain from excavated soil upto depth of 30 cm (8 cm below cable and remaining above cable) for cushioning of cable and refilling the remaining depth with normal excavated soil all as specified and directed. Note:- Excavated soil shall be riddled by using sieve to separate composite particles etc as per IS 1255 1983 and refilling in trenches as in cable cushioning. For measurement only bricks volume shall be deducted in this account-:Öì

çM&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 conductor cable of size 120 Sqmm to 185 Sqmm.@gÒæËDe-hydration/ filtration of transformer oil of transformers / stabilizers (in different location) by employing on line filtration plant to achieve di-electric strength not less than minimum 60 KV at 4mm gap including following work services :- (a) Removal of all suspended particles such as dust, rust, scales, collided Carbon oxidation sludge, etc upto < 1 micron. (b) De-hydration of transformer oil under vacuum. (c) Circulation of heated oil and filling of treated oil in transformer tank. (d) Top up the transformer oil upto the level NOTE:- (i) Contractor shall use the vehicle mounted filtration plant with new suitable size heavy duty hose pipe. (ii) The transformer oil required for replacing/top up shall be measured and paid separately as "Supply only" (iii) Conducting field testing of di-electric strength of the transformer oil before and after filtration (iv) Checking the megger/earth resistance values with battery operated megger of 5 KV,)/»Supply only Transformer oil having low viscosity of approved make as per IS 355 of 1992 and di-electric strength not less than 60 KV all as specified and directed by Engineer-in-Charge½M&L for cleaning of complete body of transformer / Voltage Stabilizer of capacity 50 to 160 KVA and painting with two coats of dark BS Grey painting complete all as specified and directed0R_ÒServicing & maintenance of HT 11 KV VCBs / RMUs with all service checks as recommended by the manufacturer including opening and taking out unserviceable VCBs /RMUs panel units any capacity and way at different locations in the area of responsibility falls under GE (AF) Thanjavur and carried out repair work to make functional including carrying out following maintenance, repair & servicing work :- (i) Open VCB (taking out trolley) / RMU front & back and remove all dirt, dust & carbon particles by air blower and Cleaning of all moving & fixed contacts with dry cloth & CRC solution and greasing of moving contacts & gears. (ii) Checking and setting of ON/OFF operation mechanism. (iii) Checking leakage in vacuum interrupter by Hi-Pot test (iv) Checking, tightness & replacement of all unserviceable / burnt control wiring to make functional. (v) Checking of insulation values of all contacts. (vi) Sealing cable In & out hole/ duct of VCB/ RMU by any sealing product. Note for item No-45 :- (i) The service of VCBs are to be carried out through authorised service engineer/dealers. (ii) Contractor is liable for conducting inspection/maintenance/repair on call basis if required other than normal servicing during whole contract period and charges deemed to be included in quoted rate. On call contractor is required to attend the complaint within 24 hrs. If not attended the complaint within 24 hrs contractor is liable to pay a penalty Rs 1500/- per day. (iii) Replacement of major spare parts as given in item here-in-after will be measured and paid separately.(iv) Upto 3 way RMU considered as one job.
M&L for cleaning surrounding area of 4/6 Pole structure / HT sub Station of area not exceeding 50 Sqm complete with use of suitable tools etc including disposal the debris outside MD land / burning in low lying area complete all as specified and as directed. ªM&L for disconnecting and opening both end of the faulty / burnt / IR value testing of HT electric cable of any size from the VCB / RMU/LBS / Transformer / GOD etc. end including taking out loop both ends as required for testing including necessary earth work upto loop and repair the electric cable as required by cutting out the damaged portion with joint kit as per suitable size and re-connect all cables with testing and seal the cable entry point with suitable packing material complete all as specified and as directed. Note : (i) Additional spare parts such as Cable , cable joint kit , will be measured & Paid separately under relevant item of Sch 'A' as supply & fixing (ii) During the work contractor will be responsible for replacement of burnt HT fuse as per rating any affected area and operate GOD with direction of JE/MCM during the testing of work etc. and the rate shall be deemed to be included in unit job.A
Material and shifting of existing VCB / LBS/ transformer of any rating to sub station within Air force station area by disconnection of HT & LT cables, earthing etc. and reinstallation and re-connection as at directed location complete shifting work and connected items complete installation as specified and directed.¶
M& L for Boring of holes under road, pavement, hard standing by trenchless technology using by necessary Eqpt /machine for crossing of electric cable including pipe not less than 100 mm dia suitable for 0.4 mpa working pressure and vertical depth n, exc. 2 mtr and horizontal dia n. exc. 200mm and including getting out excavated surplus soil to a distance not exceeding 50 mtr and depositing whereas directed complete all as specified.@U?BASIC RATE In Figures To be entered by the Bidder Rs. P +13=¬Supply and laying Bricks, sub class 'B' old size bricks, laid flat dry with width of the bricks laid across the axis of the cable complete all as specified and as directed.·Removing surplus soils to a distance not exceeding 50 mtr and depositing where directed at a level not exc. 1.5 mtr above the starting point complete all as specified and as directed.ÇM&L for providing PCC (1:2:4) type B-1 using 20 mm graded stone aggregate as in coping and finishing the surface even and smooth without using extra cement complete all as specified and as directed.PV$M&L Replacement of burnt defective HT/LT copper coil of different type / capacity winding with superior quality enamelled copper winding wire/strips of approved of suitable size/gauge and Nos of turns matching with the existing impendence and insulated including all allied materials such as cork sheets, fiver glass insulation/paper insulation cotton, empire tape, varnish and wooden, bolts, nuts and washer (Brass) soldering and other packing material etc required for entire winding of coils all as specified and directed by Engineer- in-Charge.°Shifting of standby trolley mounted transformer of capacity up to 750 KVA including its HT / LT cable from one location to another location and back to original site or to MES store yard inside the Air Force Station Thanjavur by using towing vehicle and crane if necessary by dismantling the HT/LT connection of the existing faulty transformer, connecting the HT / LT cable of the trolley mounted transformer with the existing load, connecting the transformer with body and neutral earth with existing earth lead and testing with load. NOTE:- (i) The works includes the removal and refixing of all connection, cable, etc of both transformers. (ii) Contractor shall shift and connect the trolley mounted transformer immediately within four hrs when AGE E&M / JE E&M inform through mobile message (iii) If contractor fails to shift the trolley mounted transformer within four hrs, a penalty of Rs.3000.00 p

er hour after four hour shall be imposed. (iv) Rent of towing vehicle, labour used, tools used shall deemed to be included in the quoted rate. (v) Contractor shall take care of transformer while shifting, any damage found while shifting will be rectify by the contractor at his own risk.Æás¤ÐS&F in repairs epoxy resin cast current transformer 11 KV indoor type of protection and metering of accuracy class 1, dual core of ratio 100/50/5 amps, 15 VA burden complete all as specified and as directed.§S&F in repairs space heater 100 watt 240 AC 50 HZ AC Supply suitable for VCB panel with replacement of wiring (with new one) complete all as specified and as directed.

Disconnecting HT/LT cable/busbar and Earthing connections of transformer/ voltage Stabilizers of any capacity from pole structure /floor/ foundation and carry out maintenance / servicing in situ complete with following:- (i) Checking leakage from top cover, Gas kits, HT/LT bush assembly and any place. (HT/LT bush assembly shall be measured & paid separately under respective item). (ii) Opening top cover and checking all internal connection, Tap changer, bushing connections, core assembly complete with winding. (iii) Checking compactness of core & tightening the same where required. (iv)Replacement of worn out gaskets & nut/bolts complete. (v)Top-up of oil duly filtered/dehydrated (to be measured & paid separately under respective item).

Testing of tripping mechanism and calibration of over current and earth fault IDMT/Numerical relays of HT 11KV rating VCB/ RMUs complete all as specified.

S&F in repairs of numerical relay suitable for existing VCBs/RMUs tripping system (3OC + 1 EF + 1 REF IDMTL and INST protection) digital type along with high set facility suitable for 11 KV HT VCB/RMU including provisioning blanking sheet to match the existing surface of the VCB and all control wiring connection with setting of relay complete all as directed.

S&F in repairs dry type potential transformer 11 KV/ 110V (or as per existing) 50 HZ, class 0.2, burden - 50VA fixed type, fuses, 3 phase resin cast indoor type complete all as specified and as directed.