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| 1 | M&L for disconnecting carefully electrical connection from both HT/ LT (primary & secondary) sides of the transformer, keeping them at safe side and taking out the transformer/Voltage stabiliser indoor/ outdoor typeof capacity250 to 500 KVA, 11 KV/ 0.433 KV, step down any make for carrying out complete overhauling which shall comprise of the following:-( a) M&L for lifting, transporting, handling, the transformer to workshop and opening top cover of the transformer by unscrewing nuts, bolts, washers etc. including disconnecting core assembly from HT/ LT bushing and lifting the same gently and taking out from the shell (container/ body) of the transformer. ( b) M&L for draining out transformer oil from the above said transformer in the suitable capacity of container /drums and keeping it in safe custody for reuse.(c) M&L for cleaning the transformer body from inside, removing deposited dirt/ sludge/ foreign particles etc. from the bottom/ body of the transformer and drying up the shell from inside before refilling of the transformer oil. (d) M&L for cleaning and washing thoroughly core and windings of the transformer by hosing down with clean dry oil conforming to IS 335/1983, removing deposited dirt/sludge/foreign particles from the windings/ core, thorough inspection of windings, providing insulations to leads and terminals, heating/ drying/ baking complete carefully and thoroughly inside the heating chamber at suitable temperature to obtain required value of insulation resistance etc. all as directed by Engr-in- charge. ( e) Lifting and refixing core assembly inside the transformer shell gently and carefully, connecting primary/ secondary/ Neutral connections to the bushings assembly, fixing of tap change over including tightening of nuts, bolts, washers of the coreto reduce humming noise all as directed.(f) Refilling the filtered transformer oil in the shell of transformer complete.(g) Refixing the top cover including replacement of cork sheet/ gasket 8mm thick, tightening of nuts/ bolts/ washers etc. and replacement of breather with silica gel crystal type all as directed by Engr-in charge . ( h) Lifting/ shifting to the place from where removed or to any location as directed and re-installing the transformer including connecting primary/ secondary/ neutral connections etc. all as directed by Engr-in-Charge.(j) The inspection of transformer shall involve:-i) Checking of all clamps, nuts, bolts including core bolts & cover fixing bolts.Ii) Checking all brazings, joints, tap heads and connection joints.iii) Checking all jumpers, terminations/ connections inside the transformer.iv) Checking the Buchholtz relay/ conservator etcif any v) Painting of transformer complete with two coats of synthetic enamel paint externally transformer shell complete all as directed by Engr-in-Charge.(vi) Inspection of tap changer, checking the moving and fixed contacts for contact wear and connection to winding. |
| 2 | (k) Conducting the tests on core and windings as per IS like ratio, magnetic imbalance, short circuit etc. in presence of Engr-in-Charge and test results shall be signed both by the contractor and Engineer -in-Charge and kept on record.Note:- (i)Any damage to insulators/ bushes/ windings etc. while in the custody of the contractor shall be made good at no extra cost to Department. The serviceability of the transformer shall be checked and confirmed by the contractor before taking into his custody.(ii) The quoted rate deemed to be inclusive of provision of alternate stand by transformer of suitable capacity (on rental basis) from workshop till repairs to existing transformer and the cost of rent, transportation to and fro, installation & connection also deemed to be included the quoted rate for the same.(iii) M&L for rewinding/ re-insulation of HT/ LT (primary/ secondary) coils, bushes, studs, Transformer oil,cable box, replacement of buchholtz relay if any etc will be measured and paid separately. |
| 3 | All as per Item No. 1 herein before butbuttransformer/Voltage stabiliser indoor/ outdoor typeof capacity 160 kVA to 200 kVA,complete all as specified and directed by the Engineer-in-Charge. |
| 4 | Filtration of transformer oil of transformers installed at various locations to achieve di-electric strength not less than 50 KV at 2.5mm gap as per relevant IS with portable filtration plant, testing of the oil for the di-electric strength before filtration and after filtration, complete all as specified and directed by the Engineer-in-Charge. |
| 5 | Supply and topping up of transformer oil with di-electric strength not less than 50 KV in to the conservator tank/ body tank of the transformer/ OCB etc at various locations, complete all as specified and directed by the Engineer-in-Charge.[Make: Poweroil/ Transol/ Sabitha Chemicals] |
| 6 | M&L for rewinding of distribution (HT/LT)transformers of capacity ( 50 KVA to 400 KVA)/ typeby winding the defective coils with new copper wire as per I.S. of same gauge and existing size together with new insulated materials/ bracings before placing in to the transformer and assembling the coil with new insulation and fitting the coils in the chamber, testing and commissioning the transformer and recording the test results, complete all as specified and directed by the Engineer-in-Charge.[Note: M&L for re-insulation of serviceable coils will be measured & paid separately under relevant items.] |
| 7 | M&L for re-insulating windings of HT/ LT distribution transformers of capacity ( 50 KVA to 400 KVA) /size/ type by strip opening of HT/ LT coils(i.e. Primary/ secondary coils) from core assembly safely, unwinding the HT/ LT coils (i.e. Primary/ secondary coils) complete, removing the old defective insulation paper and replacing with newDPC insulation to the copper conductor, re-varnishing of the windings with super varnish including heating/ drying/ backing complete carefully and thoroughly inside the heating chamber at suitable temperature to obtain required value of insulation resistance etc. all as per IS 1986-87 and complete all as specified and directed by the Engineer-in-Charge. |
| 8 | M&L for replacement of silica gel breather of assembly for HT/ LT distribution transformers of the following capacity including dismantling old one |
| 9 | (a) 250 to 500 KVA |
| 10 | (b) 100 to 200 KVA |
| 11 | M&L for replacement gun metal drain valves of transformers of following capacities sizeas per site including dismantling old one:- |
| 12 | (a) 250 to 500 KVA |
| 13 | (b) 100 to 200 KVA |
| 14 | M&L for replacement of the LT porcelain bushingscomplete of following capacity distribution transformers of existing transformer make/ size/ type all as directed including dismantling old one. |
| 15 | (a)50 to 500 KVA |
| 16 | M&L for replacement of the HT porcelain bushings complete of following capacity distribution transformers of existing transformer make/ size/ type all as directed including dismantling old one. |
| 17 | (a)50 to 500 KVA |
| 18 | M&L for replacement of the LT bushing rod made out of gun metal with threading & of suitable length/ size all as per existing including metal rings/ bolts/ washers/ rubber rings etc. complete of following capacity distributiontransformers of any make/ size/ type all as directed including dismantling old one. |
| 19 | (a) 250 to 500 KVA |
| 20 | (b) 100 to 200 KVA |
| 21 | (c) 50 to 500 KVA |
| 22 | M&L for replacement of (OTI) Oil Temperature indicator of following distribution transformers including dismantling old one. |
| 23 | (a) 160 to 500 KVA |
| 24 | M&L for preparation of old painted surfaces of transformers with coarse cloth/ brush and painting throughout externally on exposed surfaces with two coats of smoke grey colour synthetic enamel paint or as approved colour including writing of transformer details on plinth in white enamel painton black enamel paint back ground complete including one coat of white wash for base foundation , complete all as specified and directed by the Engineer-in-Charge for the following capacity in-door/ out-door type transformer:- |
| 25 | (a) 400 KVA to 500 KVA |
| 26 | (b) 250 to 315 KVA |
| 27 | (c) 100 to 200 KVA |
| 28 | M&L for disconnecting carefully electrical connection from both HT/ LT (primary & secondary) sides of the transformer, keeping them at safe side and taking out the transformer/Voltage stabiliser indoor/ outdoor typeof capacity 50 to 315 KVA, 11 KV/ 0.433 KV, step down , including lifting/ shifting , transporting, handling to the place from where removed or to any location as directed and re-installing the transformer carefully including connecting primary/ secondary/ neutral connections etc. , complete all as specified and directed by the Engineer-in-Charge. |
| 29 | Excavation in trenches n.exc 1.5mtr wide and not exc 1.5mtr depth and getting out insoft/loose soil, complete all as specified and directed by the Engineer-in-Charge. |
| 30 | All as per item No 15 here in before but exc 1.5 mtr or part there of in depth beyond 1.5 mtr depth. |
| 31 | Returning and filling in of excavated soil including spreading,levelling,watering and well ramming in layers not exceeding 25 cm each, complete all as specified and directed by the Engineer-in-Charge. |
| 32 | Removal of surplus soil not exceeding 50 mtr and depositing where directed at a level not exceeding 1.5 mtr above the starting point, complete all as specified and directed by the Engineer-in-Charge. |
| 33 | Dismantling damaged /unserviceable concrete poles/ struts, any size , complete all as specified and directed by the Engineer-in-Charge. |
| 34 | Supply and erectionin vertical position Steel tubular swaged poles complete with cast iron base plate, finial taper plug, bolts, nuts and screws, type 410 SP-55 (11.0 metres long) all as specifiedduly factory painted withtwo coats ofblack bituminouspaint internally through out and externaly forembeded portion and painting with one coat of red oxide primer, applyingtwo coatsof synthetic enamel aluminium painton remainingexposed surfaces after errection complete, painting with synthetic enamel paint of colours black and yellow alternate strips of 30cmwidth upto 1.5 mtr from the top of coping complete including making suitable holes where required, complete all as specified and directed by the Engineer-in-Charge. Note : PCC in foundation, coping,Earth work ( Excavation, Returning & refilling and removal)willbe measured and paid separately under relative items of Sch \"A\". |
| 35 | M&L for Plain cement concrete (1:4:8) type D-2 (Using 40 mm graded crushed stone aggregate) as in foundation for poles mass concretes or in any indicated positions etc, complete all as specified and directed by the Engineer-in-Charge. |
| 36 | Plain cement concrete (1:2:4) type B-1 (Using 20 mm graded stone aggregate) for coping of pole, complete all as specified and directed by the Engineer-in-Charge. |
| 37 | Dismantling unserviceable cross arms including clamps, bolts, nuts, washers etc from pole, complete all as specified and directed by the Engineer-in-Charge. |
| 38 | Supply, fabricate and fix cross arms any size along with, brackets, clamps, bolts, nuts, washers, bracers etc including drilling holes, cold/hot complete and fixed to pole including one primer coat and one under and finishing coat of paint, complete all as specified and directed by the Engineer-in-Charge. |
| 39 | Dismantling air break gang operated switches triple pole vertical/ horizontal mounted including isulators and opretaing mechanism forreplacment, complete all as specified and directed by the Engineer-in-Charge. |
| 40 | Supply , install, testing and commissioning of HT 11 KV Switch air break, gang operated, triple pole , mechanically operated, mounted on insulators and MS channel frame, with operating mechanism made out of 25 mm dia GI medium grade pipesuitable for operation from ground level with locking arrangement complete for current rating 200 Amps, complete all as specified and directed by Engr-in-charge. |
| 41 | Supply ,laying , testing & commissioning ofHT UG cable, XLPE insulated screened PVC bedded, galvanised steel strip or wire armoured, electric power cable(heavy duty) with stranded aluminium conductor,6.35/11 KV grade (Earthed system cable) as per IS 7098 Part-II, of following sizesall as directed including dismantling old one.Note:- (a) Earth work ( Excavation, Returning & refilling and removal), sand cushioning, concrete cable covers,GI pipe protection for road crossings, HT termination jointswill be measured and paid separately. |
| 42 | (a) 3 Core 95 Sqmm |
| 43 | M&L cable jointing kit for11 KV (Earthed) grade XLPE cable for outdoor end termination cold shrinkable type joint complete with jointing material and accessories suitable forfollowing sizes including testing after jointing, complete all as specified and directed by the Engineer-in-Charge. Note:- Earth work ( Excavation, Returning & refilling and removal), sand cushioning, concrete cable covers,GI pipe protection will be measured and paid separately. |
| 44 | a) 3 Core 50 sqmm to 95 sqmm |
| 45 | M&L cable jointing kit for11 KV (Earthed) grade XLPE cable for indoor end termination cold shrinkable type joint complete with jointing material and accessories suitable forfollowing sizes including testing after jointing , complete all as specified and directed by the Engineer-in-Charge.Note:- Earth work ( Excavation, Returning & refilling and removal), sand cushioning, concrete cable covers,GI pipe protection will be measured and paid separately. |
| 46 | a) 3 Core 50 sqmm to 95 sqmm |
| 47 | M&L cable jointing kit for11 KV (Earthed) grade XLPE cable for straigth throught cold shrinkable type joint complete with jointing material and accessories suitable forfollowing sizes including testing after jointing , complete all as specified and directed by the Engineer-in-Charge. Note:- Earth work ( Excavation, Returning & refilling and removal), sand cushioning, concrete cable covers,GI pipe protection will be measured and paid separately. |
| 48 | a) 3 Core 50 sqmm to 95 sqmm |
| 49 | M & L for good quality dry sand cushioning to under ground electric cable on layer of 8 cm thick before laying the cable and second layer of 15 cm thick after laying the cable all as specified in clause 19.75 of MES Schedule part-I (2009), complete all as specified and directed by the Engineer-in-Charge.Note :Sand shall be fined sand as specifed and punned thickness shall be measured and paid. |
| 50 | Supply and laying sub class \"B\" bricks of old size (230x115x75 mm) or of size locally available ,laid along alignment of cable as protection to cable in trenches, complete all as specified and directed by Engineer-in-Charge |
| 51 | Supply and lay GI tubes light grade galvanised with all fittings laid in trenches etc for protection of cable of following sizes:- |
| 52 | a) 80 mm dia bore |
| 53 | Supplying and laying un-reinforced precast concrete cable cover factory made as per IS 5820-1970, class HV, type 1 , size 300mm x 180mm x 40mm.(Qty as per site) |
| 54 | M/L for strip opening the metering cubicle of HT panel of rating 11 KV, 3 phase comprising of following repairs, inspecting, overhauling and servicing/ re-fixing of the spares etc, complete all as specified and directed by the Engineer-in-Charge.:- (a) Dismantling the complete instrument chamber/ HV cable box/LV cable box .Decarbonising/ cleaning the complete HT 11 KV 3 phase independent bus bar, bus bar chamber of HT panel and inspecting the bus bar insulators. (b) Checking, inspecting the Numeric/ microprocessor/IDMT relays, multifunction meters/energymeters, ammeters and voltmeters for their serviceability and functionality etc complete. (c) Checking complete electrical tripping circuit of HT panel including control wiring from secondary system rotary to tripping coil, auxiliary switch male and female housing cut out, etc. and wiring including replacement of damaged wire at places including operation on DC system, testing and commissioning complete all as directed. (d) Inspection of CTs and PTs if any. Replacing the defective CT/PTs incl accuracy in checking of the CT wiring including identification to the base and connecting links to main switch,, complete all as specified and directed by the Engineer-in-Charge.(e) Inspecting of indicating lamps, rotary switches/selector switches, toggle switches etc complete.Notes: (i) The rate quoted shall be deemed to include for necessary T&P, minor spares like nuts, bolts, washers, gasket, insulation tape, lugs, compound etc. to put in to the HT metering cubicles /panels in serviceable condition, testing and commissioning all as specified and as directed by the Engineer-in-Charge.(ii) Major spares like CTs, PTs, relays, ammeters, voltmeters, multifunction meters, energymeters, indicator lamps, control wiring, rotary/selector & toggle switches, calibration of relays etc shall be measured and paid separately under relevant items of Schedule \"A\" . However the rate quoted shall be deemed to include for any other minor spares require replacement. |
| 55 | S&F in replacement of HT bus bar of size 1.5 mx1.2 mx0.60 m outdoor type with canopy , protection class IP -65 , factory fabricated duly painted with two coat of enammel paint, pedestal type made out of mild steel sheet 3.15mm thick, factory made,using angle iron 40mm x 40mm x 6mm and 500mm high, front opening double shutter waether proof , rust proof, dust proof with provision of rubber gasket and locking arrangement including following fixtures and necessary earth work:-(a)HT bush insulator color code - 03 Nos(b)Making connection with suitable size of thimbles, nuts, bolts and washers etc. |
| 56 | Disconnect and taking out the Numeric/ Microprocessor based relay/IDMT relay of any type of any Make from 11 KV HT panel, cleaning the contacts, calibrating the relay by conducting secondary injection tests, checking of current transformer, rectification of defects in control wiring for proper tripping of circuit breakers through CTs and relay and tripping coils, adjustment/setting to plug and time multiplier settings of the relay to achieve the descrimination in tripping, tune/synchronise upstream breaker relay settings, re-installation of relay, testing & commissioningetc complete all as specified and as directed. Note: The Contractor has to arrange necessary testing Kits, testing equipments, tools etc and shall also submit detailed test reports, panel wise, duly spiral bound. Rental rates for the testing/calibration kits & connected equipments are deemed to be included in the quoted rate. Testing & tuning shall be carried out in the presence of representative of the Department, to the satisfaction of the Department. |
| 57 | S&F in repair Master Trip Relay suitable for 11 KV HT panel for protection system . |
| 58 | S&F in repair DC SupervisionRelay suitable for 11 KV HT panel for protection system . |
| 59 | S&F in repair Auxiliary Relay suitable for 11 KV HT panel for protection system . |
| 60 | Taking down /Repairing HT switch gear (Vacuum circuit breaker ) of capacity11 KV 250/350 MVAcomprising of following repairs, overhauling, servicing and refixing the same after repairs/ overhauling:(a)Tripping off the breaker, lowering the breaker with raising/lowering handle and pulling out the breaker complete from the panel along with the trolley for servicing/inspection/overhauling. (b)Servicing/Inspecting/checking of automatic safety shutter operation for serviceability and replacement of spares if required. (c) Servicing/Inspecting/checking ofcircuit spoutand cicuit spout connections for RYB phases and replacement of spares if required. (d) Dismantling and checking of cross bar assembly, fixed contacts and current carrying parts of the breaker, trolley, insulated assembly and checking lamination with clamps, epoxy spout, isolator assembly etc.(e)Setting, reassembling, cleaning, adjustment of fixed contacts, main contact, arcing contacts and chamber baffle pot assembly, moving contact for proper setting of auxiliary contacts operating mechanism. (f)Servicing/Inspecting/checking ofsecondary sockets/busbar earthing plugs/earthing sockets and replacement of spares if required. (f)Servicing/Inspecting/checking ofsecondary sockets/busbar earthing plugs/earthing sockets and replacement of spares if required. (g)Checking, setting and adjustment of lowering and raising operation of the breaker trolley. (h) Lubrication and greasing of all moving parts of the trolley, stopper bolt for proper operating and closing of shutter gear, isolation resistance of trolley of with vacuum interrupter assembly.(j) The inspection of HT switch gear shall involve:-(i) Inspection of truck & hoist assembly.(ii) Inspection of tank assembly & barriers.(iii) Inspection of assembly & components of solenoid assembly.(iv) Inspection of assembly & components of dependent mechanism.(v)Inspection of assembly & components of spring box mechanism.(vi)Inspection of motor mechanism spring charge assembly (vii)Inspection of assembly of trip unit & related components |
| 61 | Notes: (i) The rate quoted shall be deemed to include for necessary T&P, nuts, bolts, washers, gasket, insulation tape, compound, painting of VCB panels with approved colour all as per exisitngetc. to put in to the VCBs and panels in serviceable condition, testing and commissioning, complete all as specified and directed by the Engineer-in-Charge.(ii) Major spares like Breaker bushings, vaccum interrupture assly, busbar spout, busbar spout connections, circuit spout/circuit spout connections/buffer fixed contacts, moving contacts, tank assly/barriers, solenoid spares, dependent/spring mechainsm/ motor mechanism, trip unit etc will be measured and paid separately under relevant items of Schedule \"A\". However the rate quoted shall be deemed to include for any other minor spares require replacement.(ii) the servicing shall be carried out by Auhtorised service centre as approved by GE |
| 62 | Supply & Fix the following spares suitable for 250 MVA to 450 MVA HT switch gear VCBs and 11 KV HT panel repair of make: Kirloskar/ABB/Alstom/CG work under relevant Schedule |
| 63 | Supply& Fix1.5 sqmm flexible PVC stranded copper conductor cable, unshethed, 1100 V grade for control wiring. |
| 64 | Supply& Fix2.5 sqmm flexible PVC stranded copper conductor cable, unshethed, 1100 V grade for control wiring. |
| 65 | Supply& Fix LED Indication Lamps |
| 66 | Supply& Fix LED type push button actuators |
| 67 | Supply& Fix 3 phase selector switch |
| 68 | Supply& FixShunt trip coil30 V DC/110 V DC |
| 69 | Supply& Fix CTs epoxy cast wound primary CTs with minimum primary current 60 to 400 A, single/ double ratio, double core (Protection core-5P10 & Metering core- Class 0.5/1.0), 18/21/25 KA for 1 sec of 15 VA Burden. |
| 70 | Supply& Fix Breaker control switch |
| 71 | Supply& Fix Breaker bushing contact |
| 72 | Supply& FixBusbar Spout |
| 73 | Supply& Fix Circuit spout |
| 74 | Supply& Fix Control circuit fuses 2 A to 63 A |
| 75 | Supply& Fix HRC fuse (PT HT side) |
| 76 | Supply& Fix PT plug contact |
| 77 | Supply& Fix Spring charging motor with gear assembly. Make: Bosch or as per OEM make |
| 78 | Supply& Fix Ammeter 240 deg 144 sq mm. Make: AE/ MECO/ Schneider /L&T/HPL (SOCOMEC). |
| 79 | Supply& Fix Voltmeter 240 deg 144 sq mm . Make: AE/ MECO/ Schneider/L&T/HPL (SOCOMEC). |
| 80 | Supply& Fix Multifunction meter, Digital type (Displaying A, V, PF, Hz, KVA, KW, KVAR, KWh, KVARh etc.) Class 0.5 with RS485 port for communication in Modbus protocol.Make : L&T, Conzerve, HPL (SOCOMEC), CG. |
| 81 | Notes :The Schedule of Credit amount shall be deducted from the total of this schedule (BoQ) to arrive at Contract Sum. |
