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| 1 | Supply, installation, testing and commissioning of transformer, outdoor type step down 11/0.433 KV, HT with 3 phase and LT with 3 Phase, 4-wire system double copper wound with Off Circuit Tap Changer arrangement on HT side for a variation of secondary voltage with tapping range + 5% to -10% in steps of 2.5 % continuous rating of 200 KVA (Energy efficient not less than Level-II) conforming to IS: 1180 (Part 1) : 2014 & other latest IS codes, Oil - IS: 335: 1993 including first fill of Oil, making incoming and outgoing connection to Transformer with copper conductor with lugs & glands complete, mounting on existing plinth complete all as specified and directed.Make:- Ref List of manufacturer.The quoted rates shall deemed to include the following :- |
| 2 | Temp rise in Oil [Degree C] : as per IS, by resistance [Degree C.] : as per IS, Ambient temperature: as per IS, Winding Material: Double wound CopperType of Cooling : ONAN, Class of Insulation : Class “A”, Vector Group : Dyn11, Frequency [Hz] : 50, Phase : 3,Insulation Level [kV/Kvp] H.V: 28kV, L.V : 3kV, Primary Connection [HV]: Delta, Primary Volts: 11000V, Primary Phases : 3Primary Wires: 3, Primary rated current: Approx 10.5 Amps,Secondary Connection [LV]: Star, Secondary Volts: 433V, Secondary Phases: 3, Secondary Wires: 4, Secondary rated current: 278 Amps (Approx),Taps on Primary /Secondary Winding for : +5% to –10% in steps of 2.5%, Primary /Secondary Voltage Variation Off Circuit Tap Changer, No of switch positions : 7 NosTerminal Arrangement H.V: Bare Bushings / Cable box, L.V: Bare bushings / Cable Box,Load Losses (Level-II)At 50% Loading : As per IS in Watts (Max.)At 100% Loading : As per IS in Watts (Max.)Impedance (Z) [Percentage]HV - LV: As per IS Standards.No Load Current (% of Rated Current): As per IS |
| 3 | Weights & Dimensions (Approx.)1) Core & Windings with clamps (Untanking Weight): As per IS Specifications2) Tank & Fittings: As per IS Specifications 3) Oil : As per IS Specifications4) Total Weight : As per IS SpecificationsOverall dimensions of the transformer (mm)Length : width : As per IS SpecificationsHeight : As per IS SpecificationsHV - LV Orientation : 180 deg.Bushing - as per latest ISPorcelainBushings HV : 3Epoxy Bushing LV : 4Painting [Finish] : PU Light GreyShade No. 631 – IS: 5 |
| 4 | TESTS - Routine Tests as per IS: 1180 (Part 1) : 20141) Ratio test2) Polarity3) Phase angle error measurement4) IR Values5) Winding resistance6) Open circuit test7) Short circuit & Impedance test8) Separate source voltage test9) Induced over voltage test10) Vector group test11) BDV of Oil like etc.. |
| 5 | STANDARD FITTINGS AND ACCESSORIES:1) Rating & Terminal Marking Plate - One2) Earthing Terminals- Two3) Lifting Lugs -Two4) Drain Valve with blanking plate - One5) Filter Valve with blanking plate - One6) Conservator - One7) Conservator Oil filling hole with cap - One8) Oil Level indicator with min. marking - One9) Dehydrating Breather filled with silica gel- One10) Conservator Drain Plug - One11) Air Release Device - One12) Thermometer Pocket - One13) Pressure relief valve - One14) Roller Uni directional - Four15) Radiators As per IS16) Bare Bushings/Cable box HV -As per IS17) Bare Bushings/Cable box LV - As per IS18) Separate Neutral Terminal -One19) Off Circuit Tap Changer - One20) Thermometer - One21) Buchholz relay-One |
| 6 | Note:- (i) The Studs for neutral & body shall be sufficiently long to fix 2 Nos GI strip for earthing.(ii) Cost of Cable entry boxes / bare bushing on both sides shall be deemed to be included in quoted rates. |
| 7 | Supply, installation, testing and commissioning of transformer, outdoor type step down 11/0.433 KV, HT with 3 phase and LT with 3 Phase, 4-wire system double copper wound with Off Circuit Tap Changer arrangement on HT side for a variation of secondary voltage with tapping range + 5% to -10% in steps of 2.5 % continuous rating of 100 KVA (Energy efficient not less than Level-II) confirming to IS: 1180 (Part 1) : 2014& other latest IS codes, Oil - IS: 335: 1993 including first fill of Oil, making incoming and outgoing connection toTransformer with copper conductor with lugs & glands complete, mounting on existing plinth complete all as specified and directed.Make:- Ref List of manufacturerThe quoted rates shall deemed to include the following :- |
| 8 | Temp. Rise in Oil [Degree C.] : as per IS, By Resistance [Degree C.] : as per IS, Ambient temperature : as per IS, Winding Material : Double wound CopperType of Cooling : ONAN, Class of Insulation : Class “A”, Vector Group : Dyn11, Frequency [Hz.] : 50, Phase : 3,Insulation Level [kV/Kvp] H.V. : 28kV, L.V : 3kV, Primary Connection [HV] : Delta, Primary Volts : 11000V, Primary Phases : 3Primary Wires : 3, Primary rated current : 5.2 Amps Approx,Secondary Connection [LV] : Star, Secondary Volts: 433V, Secondary Phases: 3, Secondary Wires: 4, Secondary rated current: 138 Amps Approx,Taps on Primary /Secondary Winding for : +5% to –10% in steps of 2.5%, Primary /Secondary Voltage Variation Off Circuit Tap Changer, No. of switch positions: 7 NosTerminal Arrangement H.V. : Bare Bushings / Cable box, L.V : Bare bushings / Cable Box, Load Losses (Level-II)At 50% Loading : As per IS in Watts (Max.)At 100% Loading : As per IS in Watts (Max.)Impedance (Z) [Percentage]HV - LV: As per IS StandardsNo Load Current (% of Rated Current): As per IS |
| 9 | Weights & Dimensions (Approx.)1) Core & Windings with clamps (Untanking Weight) : As per IS Specifications2) Tank & Fittings: As per IS Specifications 3) Oil : As per IS Specifications4) Total Weight : As per IS SpecificationsOverall dimensions of the transformer (mm)Length & width : As per IS SpecificationsHeight : As per IS SpecificationsHV - LV Orientation : 180 deg.Bushing - as per latest ISPorcelainBushings HV : 3Epoxy Bushing LV : 4Painting [Finish] : PU Light GreyShade No. 631 – IS: 5 |
| 10 | TESTS - Routine Tests as per IS: 1180 (Part 1):20141) Ratio test2) Polarity3) Phase angle error measurement4) IR Values5) Winding resistance6) Open circuit test7) Short circuit & Impedance test8) Separate source voltage test9) Induced over voltage test10) Vector group test11) BDV of Oil like etc.. |
| 11 | STANDARD FITTINGS AND ACCESSORIES:1) Rating & Terminal Marking Plate - One2) Earthing Terminals- Two3) Lifting Lugs -Two4) Drain Valve with blanking plate - One5) Filter Valve with blanking plate - One6) Conservator - One7) Conservator Oil filling hole with cap - One8) Oil Level indicator with min. marking - One9) Dehydrating Breatherfilled with silica gel- One10) Conservator Drain Plug - One11) Air Release Device - One12) Thermometer Pocket - One13) Pressure relief valve - One14) Roller Uni directional - Four15) Radiators As per IS16) Bare Bushings/Cable box HV -As per IS17) Bare Bushings/Cable box LV - As per IS18) Separate Neutral Terminal -One19) Off Circuit Tap Changer - One20) Thermometer - One |
| 12 | Note :- (i) The Studs for neutral & body shall be sufficiently long to fix 2 Nos GI strip for earthing.(ii) Cost of Cable entry boxes / Bare bushingon both sides shall be deemed to be included in quoted rates. |
| 13 | Supply, install, commissioning and testing the following outdoor type vacuum circuit breakers 11kV, 3-ph 50Hz, totally enclosed metal clad switch gear type tested composite panel confirming to IS, factory made powder coated board with vacuum circuit breaker floor mounted with common bus bar complete all as specified A) Incoming VCB panel each consisting of the following equipment - 01 Nos:-(a) One Nos 630 Amps capacity triple pole metal clad HT control panel totally enclosed pattern air insulatedmetal clad housing, floor mounting vertically isolated, vermin proof, fully interlocked horizontal draw out type having double isolation features & control device with grounded neutral system and equipped with the following accessories.(i) One set of 3-ph 630Amps air insulated bus bar with insulated colour coding.(ii) One set of side frame for housing for circuit breaker carriage.(iii) 06 Nos 630 Amps isolator plugs.(iv) One 630 Amps, 3 pole 350MVA rupturing capacity VCB with automatic drop out and manually charged and motor operated spring closed mechanism complete with auxiliary switches draw out, vacuum circuit breaker incorporating mechanical as well electrical on/off indication, mechanical indication ON push button for emergency trip & OEM recommended trip coil shall be provided.(v) One cable box suitable for reception for cable size up to 300 Sqmm of 2 runs, 11kv, XLPE.(vi) One set in all phases of dual core CT of recommended capacity and ratio for metering and protection as recommended by OEM.(vii) One set of indicating LED lamps to indicate ON/OFF/Trip/Charging.(viii) One set in all phases of Dual core PT of recommended capacity and ratio for metering and protection as recommended by OEM. |
| 14 | (ix) CT operated Digital Ammeter, PT operated digital Volt meter scaling as recommended by OEM, Three on/off rotary selector switch.CT Class of accuracy 0.5% and PT Class of accuracy not more than 0.5%(x) Volt coil to trip the VCB on failure of electric supply(xi) One numerical protection relay for Over Current & Earth fault relay power, under/over voltage, directional over current, under/over frequency, CB fault detection, VT/CT supervision, all rms measurement as recommend by OEM.(xii) Master trip electro mechanical relay, Single element high speed tripping relay with hand rest contacts.(xiii) Strip heater, thermostat or with switch for space heating(xiv)Provision of AC/DC voltage source required for tripping system with suitable power back up including provision of siren/horn alarm and accept switch as recommended by OEM. |
| 15 | (xv) Strip heater, thermostat or with switch for space heating(xvi) Provision of AC/DC voltage source required for tripping system with suitable power back up including provision of siren/horn alarm and accept switch as recommended by OEM.(xvii) Provision for charging of spring charge motor with operated voltage as recommended by OEM.(xviii) Annunciator complete with showing type of fault, accept and reset button with OEM recommended windows.(xix) quoted rated deemed to be inclusive of pack foundation, coping and white wash etc.(xx) Provision of vector type three phase energy meter with accuracy class 0.2 |
| 16 | M&L for earthing complete with GI earth plate electrode 600mmx600mmx6mm thick buried in ground vertically to a depth not less than 2.25 mars below ground level with top edge of earth plate not less than 1.5 mars below ground level connected with GI earth strip 32mmx6 mm thick and bolts, nuts, etc. and protected by GI pipe light grade 40mm bore and 20 mm die GI tubing light grade with funnelfor watering, connecting to test point, all as shown in electrical plate No.3 of SSR Part I inch necessary earth work and excavation in any type of soil, PCC earth chamber withRCC cover slab, salt, charcoal and MS hook, and proven of test point complete.NOTE :- GI strip 32X6mm unto 7.5 Mrs shall be included in quoted rates and beyond 7.5 mars shall be measured and paid separately. |
| 17 | Earth continuity conductor 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 any other indicated situation for loop earthing of GI strip 32x6mm complete all as specified and directed. |
| 18 | M&L for disconnecting all electrical and mechanical connections of existing Transformer / DG / OCB and deposit to store yard GE(AF) Sulur complete all as specified and directed. |
| 19 | Supply, installing, testing and commissioning, factory assembled silent diesel engine driven generator set, fully wired alternator AC to give an output of 125KVA as per CPCB IV+ norms after derating factor, continuously rating at a power factor 0.8 lagging, 3-ph, 4 wire, 415 volts 50hz supply, 1500rpm directly coupled with diesel engine liquid cooled mounted on common base frame on ground with adequate capacity of fuel tank with fuel inline and accessories, fixing and aligning on ground with vibration pads, control panel and other accessories etc and comprising of following:-(i) Diesel Engine:- Liquid cooled turbo charged with after cooler to deliver suitable BHP after derating factor at 1500rpm under NTP (Normal Temperature and Pressure) conditions as per latest IS/SO with an overload capacity of 10% more for one hour in any 12hours continuous operation with following accessories: Diesel engine of rated speed at full load electric start developing system with radiator, including electronic governor with latest class as per IS, engine control panel, lub oil pumping, water pumping (by gravity or external arrangementas recommended by OEM, fuel tank exhaust piping with silencer and suitable electric start with batteries of adequate capacity and rating of alternator of specified capacity complete with direct / flexible coupling and coupling guard complete. |
| 20 | (a) Radiator with blower fan or heat exchanger with guard.(b) Pipe coupling for engine cooling system piping.(c) Corrosion inhibitor coolant.(d) All type of filters as required and recommended by OEM (e) Fly wheel housing and fly wheel to be suit to the alternator (f) Shut off coil with safeties for LLOP (Low Lube Oil Pressure) /HWT (High Water Temperature) / over speed.(g) Engine bearing mechanism in fly wheel housing.(h) Dry type air cleaners and vacuum indicators, silencers (k) Exhaust flexible bellows.(l) Battery charging alternator/DC dynamo.(m) First fill of oil, coolant and diesel during commissioning of and 12 hours testing.(n) Inter connecting all cables of adequate capacity batteries control and all pipelines.(o) Self starter 12 volts DC or as recommended by OEM of DG set.(p) Electric operated electronic governor with latest class as per IS.(q) Fuel injection pump/Pressure time pump as recommended by OEM of DG set.(r) No of cylinders as recommended by OEM of DG set to achieve desired Output of 125kVA after derating factor. |
| 21 | (s) providing all engine safety features like, water temp, engine temp, engine speed, lub oil pressure, frequency, voltage, safety control, lub oil temp, over speed stoppage(t) Adequate capacity of batteries for self starter .(ii) Fuel tank: Adequate storage capacity fuel tank with mounting brackets factory made of 5mm thick HR/MS sheet with level indicator fuel inlet, outlet, air vent, drain plug etc complete all as specified.(iii) Isolator panel with 200Amp MCCB, 35kA with tripping mechanism(iv) Micro processor based Genset controller or Auto logical controlled Genset controller (as recommended by OEM of DG set) with monitoring features with display like voltage, currents, frequency,kVA, kW, kWH, kVarh, PF, Lub oil pressure, temperatures of engine, lub oil, water etc, RPM, run hours, No of starts, Fuel level, Auto/Manual start/stop, battery voltages and charge condition, compatible AMF features and diagnostic features battery charging failures, over/under speeds, over/under voltages, over kW, Phase sequence, phase missing, mains under/over voltage, earth fault trip, low fuel level, low oil pressure, high engine temperature, low/high battery voltage, over crank protection, routine maintenance indicator, gen set facility. |
| 22 | (v) Alternator: Suitable capacity Alternator for rated out put of 125 kVA capacity after derating factor, PF-0.8 lagging, 415volts, 3-ph, 4-wire, 50Hz at 1500rpm, self excited and self regulated with AVR brushless, screen protected, drip proof, insulation of class-H, IP, voltage regulation grade latest, self ventilated confirming to latest BIS standards.(vi) Acoustic enclosure: M&L for above capacity DG set i.e 125kVA DG set to reduce noise level to 75dB measured at 1.0 meter distance as per guidelines CPCB IV+(vii) Base frame: Sturdy, fabricated welded construction, channel iron base frame(duly painted) for mounting of engine and alternator i.e complete DG setas per manufacturer design along with AVM pads, other necessary accessories complete as required. |
