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| 1 | Annual Comprehensive Preventive maintenance of 3Nos HT 33 KV, VCB Breaker, Panel 630 Amp with all accessories ABB make &2 Nos 1600 KVA 33/0.433 KV ONAN Transformer Kirloskar make I/c minimum one visit in a month by OEM Engineer attending complaints for rectification of defects during any breakdown with in 12 Hrs of its occurance or as and when required i/c testing & other works for routine periodic preventive maintenance atleast afterevery months as per checkedlist below through authoriszed service centre of Kirloskar make transformers (02Nos)& ABB make HT Panel/VCB Breakers (03Nos) (A)Complete servicing (Twice in a year or as per direction of Engineer-in-charge) |
| 2 | (1) Complete relay testing mounted in HTVCB panels and transformers i/c chekcing of tripping system(2) Mechanical adjustment of breakers(3) Checking of T&C switch operation tesing (4) Checking of all hardware for its tightneess for all equipments(5) Busbar tightness(6) Checked of all WTI & oil temperature indoor system other safeties (7) Checking of all controlling circuit/equipment make in order(8) Cleaning of transformers & HTVCB panel and OLTC panel etc (9)complete Servicing of transformers (10) In case traansformer unserviciable, repairby new copper winding. (10) Remove of dust particles (11) Checking of voltage ratio test (12) Checking of insulation resistance test [HV to Body; LV to Body & HV to LV ] (13) Checking of MBT (14) Checking of vector group test(15) Checking of WTI/OTI scanner programming & servicing etc i/c servicing of relay |
| 3 | (16) Servicing,repair, gressing, testing and calibration of OLTC Panel(17) Testing checking and making it in order of transformers, OLTC, HT VCB Panels, Meters & other equipments(18) Any all other activities related to preventive maintenance of ONAN type transformer, OLTC & 33 KV HT VCB Panel.as per instruction of Engineer Incharge i/c complete repair & testing of svstem (19) Supply/replacement of all type of major/minor spare parts ,disassembling , complete cleaning of the components, decarbonizing the arcing chambers, rewinding of transformer coils, replacement of core,relay, indication lamp,CT,PT, control wiring,replacement of unserviciable Batteries, charger etc(B) Work mandatory during every periodic check every month or and as when required keeping the whole HT system in order |
| 4 | (1) During monthly preventive maintenance visits which includes cleaning of VCB Breaker, servicing of complete VCB breaker, removal of dust, checking of all hardwares for its tightness, checking of OC/EF primary injection test, checking/Testing of insulation resistance test, checking of CRM testing, Checking of secondary injection test, Checking of Timing testing, scanner programming and servicing etc., (2) During monthly preventive maintenance visits complete checking of the 1600 KVA, 33 KV/.433 kV transformers for oil leakages, holes in the radiator fins, flapper valve packings, top cover plates, threaded fittings, flapper flanges, radiator flanges, electrical bushing leaks, and stopping leakage by providing necessary sealants, gaskets, rubber washers, chemical cleaning agents, or any other consumables, including the opening of the top cover and draining out the oil to repair leakage (if required), to ensure zero leakage, etc. and complete cleaning of outer surfacethe transformer as required. |
| 5 | (C). Dehydration and filtration (once in a year) of transformer oil by high vacuum machine,intransformers of 1600 KVA, 33 KV/.433 kV,ratings to free the oil from any impurities, sludge and moisture to get the desired level of BDV value as per relevant IS standard, including breakdown Voltage strength test before and after dehydration at site including submission of test report complete etc. as required. [All necessary tools, machinery spares, consumables excluding transformer oil required for top up , to be provided by the contractor.Note:The work will be done through the OEM or OEM-authorized dealer. All consumables & defective parts of VCB & Transformer during maintenance period will be replaced with OEM genuine parts by agency free of cost, rates are inclusive. |
| 6 | Providing and top-uptransformer oilin existing transformers after filteration and Breakdown-Voltage strength test as per actual requirement of each transformer etc as required [All necessary tools, machinery spares, consumables to be provided by the contractor] |
| 7 | Servicing and maintenance of the Air Circuit breaker/bus coupler of following ratings 3p/4p, 415V, 50 Hz from the MV Panel, cleaning the same, disassemling, decarbonizing the arching contacts & arcing chutes completely, cleaning the fixed and moving contacts with ctc, checking the control wiring for continuity, tightening the connections, replacement of minor parts like spring, nut bolts and washers, setting right the mechanism, lubricating the moving mechanical parts, measuring the contact resistance of fixed and moving contacts with Micro ohm meter, and rectification of faults and replacement of defective parts (If any), reassemling the ACB, checking and testing the tripping system and releases with the help of secondary injection test kit at minimum three settings of over current, earth fault current, reinstallation the ACB in MV Panel, commissioning i/c dismantling & disconnection etc as reqd. (Any major spares, if required, will be supplied by the department.) [All consumables & defective parts of Air Circuit Breaker during maintenance period will be replaced with OEM genuine parts by agency free of cost, rates are inclusive.] Above 800A and Upto 2500Amps |
| 8 | Testing and checking of Bus bar Trunking including hot air blowing,removal of dust, cleaning, checking of all hardwares for its tightness chekcing of insulation (IR values), loose contacts\" tightning,checking overlapping of segments, loading of mechanical supports (corrections if any) and recording of all parameters etc as required. Up to 800 A |
| 9 | Above 800A and Upto 2500Amps |
| 10 | Location, tracing and pin-pointing of faults in existing 1.1 KV and 11KV grade underground cables, including disconnection of the cable at both ends, finding the route of the cable, excavation at the fault point to make the fault point visible, making temporary joints ( in case of LT cable), testing the cable on load for three hours, including refilling the excavated trench and cleaning the site, etc. as required(Permamnent joints will be paid separately ).Ist Fault |
| 11 | More than Ist fault in same cable |
| 12 | Supplying and Laying of one number aluminium conductor, XLPE Insulated, PVC sheathed, armoured power cable of 1.1 kV grade , confirming to IS : 7098 (Part-1) 1988 of following size direct in ground including excavation,sand cushining and protactive covering and refilling the trench etc as required. 3½ X 300 sq. mm |
| 13 | 3½ X 120sq. Mm |
| 14 | 3½ X 35 sq. mm |
| 15 | 2x16 sq.mm |
| 16 | Supplying and Laying of one number aluminium conductor, XLPE Insulated, PVC sheathed, armoured power cable of 1.1 kV grade , confirming to IS : 7098 (Part-1) 1988 of following size in following size in the existing RCC/ HUME/ METAL pipe as required.3½ X 300 sq. mm |
| 17 | 3½ X 120sq. mm |
| 18 | 3½ X 35 sq. mm |
| 19 | 2x16 sq.mm |
| 20 | Supplying and Laying of one number aluminium conductor, XLPE Insulated, PVC sheathed, armoured power cable of 1.1 kV grade , confirming to IS : 7098 (Part-1) 1988 of following size in the existing masonry open duct/along pole/loose for connections, etc. as required.3½ X 300 sq. mm |
| 21 | 3½ X 120sq. mm |
| 22 | 3½ X 35 sq. mm |
| 23 | 2x16 sq.mm |
| 24 | Providing and fixing following switch gears, meters and accessoriesin existing cubicle panel board including drilling holes in cubicle panel, making connections, etc. as required.Providing and fixing 400 A, 4 pole, 415 V, category AC-23A. On Load Change Over Switch,in Sheet Steel Enclosures including drilling and fixingin cubicle panel, making connections, etc. as required. ( Make:Socomec/L&T/Legrand /ABB /Schneider/ Havells/ Siemen) |
| 25 | 3 ph Multifunction meter for the measurement of parameters voltage, current, power factor, frequency, KW and KWHFlush mounting type.( LT panels only) |
| 26 | LED Indicator Red/Yellow/Blue/Green 240V AC/ 24 DC.(L & T, Siemens, BCH,ABB, Telemecanique, Vaishnav, Legrand/ Kaypee)( LT panels only) |
| 27 | Providing and fixing following switch gears, meters and accessoriesin existing cubicle panel board including drilling holes in cubicle panel, making connections, etc. as required.3Ph LED Ammeter Cl 1 with Inbuilt selector switch for 3 phases. Flush mounting 96 x 96 mm. (Single Function Meters L&T WL131010OOOO or similar in Conzerv, AE, Rishab, Secure)( LT panels only) |
| 28 | Providing and fixing3Ph LED Voltmeter Cl 1 (0-500V) with Inbuilt selector switchfor 3 phases in existing cubicle panel board including drilling holes in cubicle panel, making connections and testing, etc. as required.( LT panels only) 3Ph LED Voltmeter Cl 1 (0-500V) with Inbuilt selector switch for 3 phases. Flush mounting 96 x 96 mm. (Single Function Meters.(L&T WL132010OOOO or similar in Conzerv, AE, Rishab, Secure)( LT panels only) |
| 29 | Supply, Installation, Testing and commissioning of outdoor type totally enclosed, dust and vermin proof, pedestal mounted INSPECTION BOX / JUNCTION BOX of a suitable size but not less than 600 mm wide X 600 mm height X 500 mm (deep) fabricated from 2 mm thick CRCA sheet steel having front and back openable doors with locking arrangement on both sides, tapered top (roof), including detachable cable gland plates made of 3 mm thick CRCA sheet, including pre-paint treatment, phosphating and powder coating by approved Siemens grey paint, consisting of 300 Amps 4 strip aluminium bus bars with heat-shrinkable coloured sleeves and including DMC / SMC bus bar supports at required intervals, etc. as required, suitable for operation on 433 volts, 50 Hz, 3-phase, 4-wire A.C. supply system, the entire panel shall have one common G.I./aluminium bar of size 25 mm x 5 mm at the rear with 2 earth studs or terminals, a danger notice plate fixed, etc., complete as required. The feeder pillar should be complete with a mounting frame made of 50 mm x 50 mm x 6 mm angle iron with 900 mm long legs. The 4 legs of the feeder pillar shall be erected on a suitable size 1:3:6 cement concrete (1:3:6 cement; 3 sand; 6 graded stones of 20 mm size) pedestal having 900mm of depth (600mm below ground and 300mm above ground). |
| 30 | Supplying and making end termination with brass compression gland and aluminium lugs for following size of PVC insulated and PVC sheathed / XLPE aluminium conductor cable of 1.1 KV grade as required. [Make-Comet/Hex/Dowells/Jainson or equivalant] 3½ X 300 sq. mm |
| 31 | 3½ X 120sq. mm |
| 32 | 3½ X 35 sq. mm |
| 33 | 2x16 sq.mm |
| 34 | Supplying and making straight through joint with heat shrinkable kit including ferrules and other jointingmaterials for following size of PVCinsulatedandPVCsheathed/XLPEaluminiumconductor cable of 1.1 KV grade as required. 2 X 16 sq. mm |
| 35 | 3 1/2 X 35 sq. mm |
| 36 | 3 1/2 X 50 sq. mm |
| 37 | 3 1/2 X 120 sq. mm |
| 38 | 3 1/2 X 150 sq. mm or |
| 39 | 3 1/2 X 240 sq. mm |
| 40 | 3 1/2 X 300 sq. mm |
