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| 1 | Supply, installation, testing, and commissioning of Power Transformer step down, out door type of capacity 5000 KVA, HT 33 KV/11 KV, 3 phase, 50 cycles AC with On Load Tap Changing arrangements with remote control panel operation on 33 KV sides to vary secondary voltage from (+) 10% to (-) 10% in steps of 1.25%. % impedance should not be less than 6.50% at normal / common tap No. 7 including suitable marshalling box and HV terminals 3 Nos outdoor bare bushings with socket and LV terminal connectors of copper to connect the transformer with HT XLPE Power cable of size 120 sqmm x 3 core with aluminum conductor and LV side additional Neutral with one No. solid porcelain type out door bushings with sockets on the transformer lid for earthing purpose complete in all respects with standard accessories and fittings conforming to IS-2026, HV (Primary) side delta and LV (Secondary) side star connected including control panel of Transformer. The salient features of the transformer shall be as under :- (a) (i) Transformer shall be Dyn - 11 vector group oil immersed naturally cooled, double wound copper winding core type, Radiator cooled MS tank complete with first fill of transformer oil as per IS -335 with ONAN cooling system. The temperature of oil shall not rise 50˚c to ambient 55˚c of winding. Transformer shall be painted with two coats of synthetic enamel paint with two coats of expoxy paint as per IS -632. |
| 2 | Standard Fittings :-(i) Rating and diagram plate alongwith levels where ever necessary. (ii) Earthing terminals - 2 Nos.(iii) Lifting lugs.(iv) Thermometer pocket with thermometer.(v) Air release hole with plug.(vi) Oil filling hole with plug on & incl. Conservator tank with drain valve and plug.(vii) Prismatic type oil indicator on one side of conservator tank with minimum and maximum oil level marking.(viii) Dehydrating breather - 01 No(ix) Oil conservator with drain valve and plug.(x) Sampling valves, top and bottom.(xi) Under base with flat treaded bi-directional rollers.(xii) Drain cum bottom filter valve with plug.(xiii) Top filter valve with plug.(xiv) Explosion vent with diaphragm and equalizer pipe (pressure release valve).(xv) Jacking lugs and hauling holes.(xvi) Inspection cover.(xvii) Detachable radiators with shut off valves between radiators and tank.(xviii) Radiator with air release hole and plug. Oil drain hole with plug and lifting eye all as per manufacturer's standards. |
| 3 | (xix) 150mm dia oil temperature indicator stems type.(xx) Double float Bucholtz relay with two sets of contacts and isolating valves.(xxi) 150mm dia winding temperature indicator with maximum indicating pointer and resetting device.(xxii) 100mm dia magnetic oil level gauge with low level alarm.(xxiii) Terminal arrangements(xxiv) Suitable wheels (width /distance should be as per Broad Gauge rails).(xxv) Marshalling box.(xxvi) Indoor type Remote Tap Changer Control Panel (RTCC) with Automatic Voltage regulator and necessary indications.(b) On Load Tap Changer(OLTC), out door design weather proof, oil immersed, high speed, non inductive transition type employing, snap switches combining both selector and diverter duties housed in a self contained single compartment and mounting externally on transformer at suitable place. On load tap changer shall have following components :- |
| 4 | (i) High torque electric motor suitable for 415V 3 phase 50 cycles AC supply including connected cabling.(ii) Motor drive and energy accumulator.(iii) Motor isolating device with over load protection.(iv) Raise , lower control for local operation.(v) Local / remote control selector switch.(vi) Raise / low limit switch.(vii) Retainer switch.(viii) Stepping Relay.(ix) Anti - condensation heater with switch.(x) Inter locking between manual and electric operation with and including followings :-(a) Handle for manual operation (b) Auxiliary Transformer(xi) Main isolating switch with set of fuses.(xii) Insulated terminal board (with connector) for transformer tap leads.(xiii) Mechanical tap position indicator with handle.(xiv) Tap changing operation counter,(xv) Rating plate.(xvi) Driving mechanism chamber locking arrangement.(xvii) Un -drilled gland plate for cable entry.(xviii) Terminal strips.(xix) Drain cum filter valves.(xx) Stoppers to prevent over travelling of mechanism. |
| 5 | (xxi) Indoor floor mounted remote control cubicals (RTCC Panel , AVR relay) with rear accessories on HV side to vary secondary voitage as mentionrd above with wiring and followings :-(a) Remote tap position indicating meter digital type.(b) Tap change in progress signal lamps with belt(c) Raise / lower push buttons for remote operation(d) Inside illuminating lamp with door switch.(e) Supply on signals.(f) Suitable class CTs for 3 core to suit full load on transformer.NOTE :-(a) Copy of test report for impuse test and heat Run Test for similar rating or highr rating carried out at approved laboratory shall be submitted by OEM before despatch of transformer.(b) Transformer shall be inspected by inspecting officers nominated by Accepting Officer at manufacturers premises and all desired test shall be carried out in accordance to IS: 2026. The Manufacture in house testing lab must be NABL accridited.(c) Site testing : Insulation resistance ,oil temperature alarm trip, Winding temperature alarm and trip, Bucholtz relay alarm and trip, Low oil level alarm, testing of annunciation systems by auxiliary relay triping of transformer, Polarity marking and phase sequence, Ratio test, vector group, magnetising current, dielectric strength and filtration if required should be carried out. |
| 6 | (d) Armoured control copper conductor cables of required size , length and core for making connections and functioning of all controll devices / panels / accessories shall be provided by firm all as required at site. The cost of the same are deemed to be included in the rate quoted by the Contractor.(e) Foundation and civil works as per manufacture's recommendation shall be provided at 'NO' extra cost to the dept.(f) Earthing shall be measured and paid separtely.(g) The stud for neutrals shall be of sufficient length to fix 2 Nos strip earthing.(h) Cost of cable entry box on 11 KV side for 1 run of 95 Sqmm , 3 core HT XLPE cable (E) deemed to be included in the item rate.(j) Routine test as per IS 2026 shall be conducted and test certificate shall be furnished.(k) The quoted price shall deemed to be inclusive of connecting of trip contacts of bucholtz relay and temperature indicator of windings & oil to the trip coil in panel board.(l) Cost of initial oil filing with Transformer oil having dielectric strength not less than 70 KV at 2.5mm gap deemed to be included in the item rate. |
| 7 | (m) RTCC and AV shall be suitable for automatic voltage regulation with master follower scheme with tap position indicator as per tap indication in the OLTC mechanism, RTCC should also be provided with contol gear in respect of fan ON/OFF indication, auto and manual control switch AC supply on and tap changer in progress indication lamp tap struck indication and alarm.(n) The erection of the transformer shall be done under the supervision of manufacturers authorized representative. Certificate in this regard shall be sumitted by the contractor duly signed by authorized representative of manufacturer and Engineer-in-Charge.(o) The design of transformer shall be in accordance to relevant clauses specified in PS . The accessories /devices not mentioned here but necessary to provide as per relevant standard , shall be provided by the firm without any extra cost. No Load Losses should be 5.0 KW (Max.) full load losses should be 36.0KW (Max.) |
| 8 | Supply, installation, testing and commissioning of 33 KV, 1250A, 25 KA Outdoor Porcelain Clad Vacuum Circuit Breaker (PCVCB) panel with Manual/230V AC Motor Operated Spring Charging Mechanism with 110V DC Closing /Opening Shunt trip coils, Aux. Switch, Mechanical On/Off Push Button, and mechanical Operating Counter and with hot dip galvanized Base Frame complete all as specified and directed.(i) Rated Voltage: 36 KV (ii) Operating Voltage: 33 KV (iii) Rated power frequency withstand Voltage: 70 KV (iv) Rated lighting impulse withstand Voltage: 170 KV (v) Rated frequency: 50 Hz (vi) Rated current : 1250 A (vii) Rated short time withstand current: 25 KA for 3 Sec. This item will include . (a) Supply, installation, testing and commissioning of Current Transformer: Outdoor Type 33KV, 150/5+5A. Core1: Cl.1.0, 15vA, Core2: Cl.5P10, 15vA and with hot dip galvanized Base Frame (3 Nos) complete all as specified and directed. (b) Supply, installation, testing and commissioning of 33 KV Potential transformer, oil cooled Outdoor Type 33KV/ 110V, Cl.1.0, 50VA and with hot dip galvanized Base Frame (3 Nos) complete all as specified and directed. |
| 9 | (c ) Supply, installation, testing and commissioning Indoor type Control and Relay Panel for 33KV Porcelain Clad Vacuum Circuit Breaker PCVCB made of MS steel enclosure made up of MS sheet with suitable thickness including the following:(a) MeteringDigital Ammeter with selector switch - 1 No.Digital Volt Meter with selector Switch - 1 No.(b) Protection2 OC+ 1 EF Relay (Micro Processed based Non-Directional IDMT) - 1 No.Master Trip Relay Model No. - AVAJH - 13 -1 No.8 Window Annunciator Model No. SI-801 - 2 Nos.(c) Indication LampsVCB off / on /auto trip/ Trip circuit healthy/spring charge indication - 1 set(d) Buzzer - 1 No.(e) Breaker control switch (T-N-C) - 1 No.(f) Local Remote Switch - 1 No.(g) Power pack -230V AC-110V DC -1 No.(h) Control Wiring with appropriate colours - 1 Lot(j) Space Heater with ON/OFF Switch and Thermostat, Single phase switch with socket, |
| 10 | LT Cubical illumination Lamp with Door Limit switch and MCB's for AC/DC Control - 1set(k) Earth Bar Aluminium - 40x6mm: 1 set. Note : (i) Contractor shall submit the drawings of VCB for approval of GE. (ii) Contractor shall visit the site before quoting the rates. (iii) Factory inspection shall be carried out by Rep deputed by Accepting officer at the factory premises prior to dispatch. (iv) Necessary arrangements for pre-commissioning inspection by SEl shall be done by the contractor. The cost for all above is deemed to be included in the rate quoted by the Contractor. |
| 11 | Supply and fixing of new Air break gang operated switch, triple pole, mechanically operated out door with all fitting/ accessories mounted on and including 9 Nos. 33 KV porcelain insulator and steel channel frame GI operating rod 25 mm dia of suitable length with operating mechanism worked from ground level horizontally operated rotating type with copper isolator as per site requirement including locking arrangement for operating handle complete suitable for current rating upto 400 Amps 33 KV complete all as specified and directed by Engr in charge. |
| 12 | Supplying and fix Lightning arresters suitable for 11 KV expulsion type complete with all fittings, transmission class, discharge capacity 65 kilo amp complete all as specified and directed by Engr in charge. |
| 13 | Supply, laying & testing cable XLPE insulated screened PVC bedded, galvanized steel strip or wire armoured, electric power cables (heavy duty) with stranded aluminium conductor, 33000 volts grade, of size 3 core 240 sq mm complete all as specified and directed by Engr in charge. |
| 14 | Cross arms, bracings, supports, clamps and back plates fabricated from structural steel sections including nuts, bolts, washers, welding, bending cold or hot, drilling holes for bolts, in any shape or size as indicated or directed and inclusive of one primer coat, one under coat and one finishing coat of paint complete all as specified and directed by Engr in charge. |
| 15 | Roof trusses (framed), trussed, purlins, crane gantries, rails and fastenings and heavy bracket framing (Beam, tee, angle, channel or flat sections) including distance pieces, cleats etc (Fe-290 (Gde E-165)) for 33 KV gantries yard complete all as specified and directed. |
| 16 | Supply, fixing and stretching new ACSR conductors for 33 KV gantry yard of any size and type for over head HT poles including binding at site to insulator with suitable size of binding wire etc complete all as specified and directed by Engr in charge. |
| 17 | Supply and fixing of new pin type polymer, vitreous, white/ brown/ green insulator 150mm high and 150mm dia including one galvanised mils steel spindle, two galvanised iron washers and one galvanised iron nut, suitable for HT 33000 volts complete all as specified and directed. |
| 18 | Supply and fixing of new disc type insulator, polymer, vitreous white/ brown/ green 145mm high and 225mm dia ball & socket type single disc assembly for tension with GI tension clamps for conductors for working pressure of 33000 volts complete all as specified and directed. |
| 19 | Supply &Fixing post type polymer insulator suitable for 33 KV complete all as specified and directed. |
| 20 | Supply and fix cable jointing kit for 33 KV grade cable for Outdoor termination cold shrink type joint complete with jointing material and accessories suitable for 3 core XLPE, armoured ,Al conductor cable of size 240 sqmm. |
| 21 | Supply and fix cable jointing kit for 11 KV grade cable for Outdoor termination cold shrink type joint complete with jointing material and accessories suitable for 3 core XLPE, armoured ,Al conductor cable of size 120 sqmm complete all as specified and directed by Engr in charge. |
| 22 | Supply and fixing of new pin type porcelain, vitreous, white/ brown/ green insulator 150mm high and 150mm dia including one galvanised mils steel spindle, two galvanised iron washers and one galvanised iron nut, suitable for HT 11000 volts complete all as specified and directed. |
| 23 | M&L for Earthing complete with copper earth plate electrode 600 x 600 x3.15 mm thick buried directly in ground earth pit not less than 2.25mtr deep below normal ground level with top edge of the plate not less than 1.5 mtr below ground level connected to copper strip of size 20x3 mm as earthing lead by mean of nut/bolt and washer of galvanized iron or steel drawn through 40 mm dia light grade GI pipe as shown in electrical plate no 3 of SSR part I of 2009 including necessary excavation and earth work GI pipe 20mm dia medium grade for watering PCC chamber with PCC cover in cement concrete 1:2:4 Type B1(20mm graded aggregate), funnel, wire mesh, charcoal dust, salt etc, connected to Panel board/Tranformer body, APFC Panel, VCBs etc as indicated including testing complete all as specified and as directed.Note :- Earth protection pipe & earthing strip upto and including 7.5 m length is deemed included in unit rate quoted by the contractor. |
| 24 | Supply & fix hollow copper conductor of dia 25mm & 3mm thickness for connection of 33 KV supply network and 33/11 KV supply network including connector,clamp, Tee joints, straight joints etc. complete all as specified and directed by Engr in charge. |
| 25 | 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 etc. as required 20x3 mm copper strip complete all as specified and directed by Engr in charge. |
| 26 | Supply and laying or fixing or passing in trenches/ on pole/ through pipes 11000 volts grade (Earthed) XLPE insulated, screened PVC bedded, galvanised steel strip or wire armoured, electric power cables (heavy duty) with stranded aluminium conductor of cross section area 120 sqmm, 3 core and testing on completion complete all as directed. (Note : Excavation, earthwork, sand cushioning and cable protection will be measured and paid for separately) |
| 27 | Supply, Installation, testing and commissioning HT 11 KV, 3 Phase, 50 Hz, 3 wire, totally enclosed, metal clad, prewired, extensible type, indoor type, floor mounted, Horizontal draw out, horizontal isolation type vaccum circuit breaker (VCB) 630 Amp rating two panel boards, consisting of INCOMER VCB-01 No and OUTGOING VCB-01 No, motor operated, spring charged having rupturing capacity 25 KA , comprising of the followings including provision of suitable foundation and duct under the VCBs for necessary entry for cables with and including the followings in both incoming and outgoing VCB's:- (A) Incoming VCB, 630 Amps, 25 KA - 01 No with and including the followings : (a) Housing for circuit breaker carriage - 1 No (b) Vacuum interupter suitable for 630 Amps-set of 03 (c) Mechanical inter lock and automatic safety shutter gear including padlocking arrangement - 1 No (d) Closing & tripping coil suitable for 24 V DC - 01 Set (e) 4 NO + 4 NC Auxiliary switch - 01 Set (f) Mechanical ON/OFF indicator - 01 Set (g) Mechanical spring charge/discharge indicator-01 Set (h) Breaker Position indicator - 01 Set (j) Mechanical operating counter-01 Set (k) Automatic safety shutters - 01 Set (l) Secondry Plug in contacts-01 Set (m) Anti Pumping relay - 01 Set (n) 11 KV Epoxy Resin Cast current transformer of ratio 200-100/50-5+5A, Core I, Class 1.0 with 15 VA burden for metering core II CL-1.0, 5 P 10 with 15 VA burden for protection, - 03 Nos |
| 28 | (o) 11 KV epoxy resin cast potential transformer of ratio 11/ under root 3/110/under root 3V, 3 phase, draw out type, Core I, Cl1.0 with 100 VA burden for metering & protection-01 No (p) meter misc type 96sqmm ammeter with selector switch - 01 No (q) Meter Misc type 96sqmm voltmeter with selector switch - 01 No (r ) Relay non drawout case type, micro processed based non-direction IDMT - 01 No (s) Master trip relay model No AVAJH-13-01 No (t) Auxilary relay - Model No AVA-23-01 No (u) Trip circuit suspervision relay model No JRV-911-01 No (v) Battery power pack with battery & in built charger for 24V circuit-01 Set (w) KWH meter suitable to record unit consumed-01 No (x) R,Y,B indication lamp- 01 Set (xi) Breaker ON/OFF indicating lamps-01 No (xii) Spring charging indication lamp-01 No (xiii) Auto trip indication lamp-01 No (xiv) Trip circuit healthy indication-01 No (xv) Trip/Neutral/Close switch-01 No (xvi) Trip circuit healthy push button-01 No (xvii) MCB for spring charge motor-01 No (xviii) MCB for AC/DC supply-01 Set (xix) Panel space heater with thermostat-01 No (xx) Panel illumination with switch-01 No (xxi) 5 Amps 3 pin socket with switch-01 No (xxii) Copper Bus bar 630 Amps rating with sleeves R, Y. B-01 Set |
| 29 | (xxiv) MS cubical with powder coating - 01 Set (y) Rear cable termination, provision for terminating 1x3 core x 95 sqmm XLPE cable -01 No for incoming and side cable termination box arrangement for terminating 1 x 3 core x 95sqmm for outgoing (z) In-built integral earthing (B) Outgoing VCB, 630 Amps 25 KA - 01 Nos with and including the followings for each VCB : (a) Housing for circuit breaker carriage - 1 No (b) Vacuum interupter suitable for 630 Amps-set of 03 (c) Mechanical inter lock and automatic safety shutter gear including padlocking arrangement -1 No (d ) Motor/Manual spring charging mechanism-230 V AC-01 Set (e) Closing & tripping coil suitable for 24 V DC - 01 Set (f) 4 NO + 4 NC Auxiliary switch - 01 Set (g) Mechanical ON/OFF indication - 01 Set (h) Mechanical spring charge/discharge indication-01 Set (j) Breaker Position indicator - 01 Set (k) Mechanical operating counter-01 Set (l) Automatic safety shutters - 01 Set (m) Secondry Plug in contacts-01 Set (n) Anti Pumping relay - 01 Set (o) 11 KV Epoxy Resin Cast current transformer of ratio 200-100/50-5+5A, Core I, Class 1.0 with 15 VA burden for metering core II CL-1.0, 5 P 10 with 15 VA burden for protection, - 03 Nos (p) meter misc type 96sqmm ammeter with selector switch - 01 No |
| 30 | (q) Meter Misc type 96sqmm voltmeter with selector switch - 01 No (r) Relay non drawout case type, micro processed based non-direction IDMT - 01 No (s) Master trip relay model No AVAJH-13-01 No (t) Auxilary relay - Model No AVA-23-01 No (u) Trip circuit superision relay model No JRV-911-01 No (w) KWH meter suitable to record unit consumed-01 No (x) R,Y,B indication lamp- 01 Set (xi) Breaker ON/OFF indicating lamps-01 No (xii) Spring charging indication lamp-01 No (xiii) Auto trip indication lamp-01 No (xiv) Trip circuit healthy indication-01 No (xv) Trip/Neutral/Close switch-01 No (xvi) Trip circuit healthy push button-01 No (xvii) MCB for spring charge motor-01 No (xviii) MCB for AC/DC supply-01 Set (xix) Panel space heater with thermostat-01 No (xx) Panel illumination with switch-01 No (xxi) 5 Amps 3 pin socket with switch-01 No (xxii) Copper Bus bar 630 Amps rating with sleeves R, Y. B-01 Set (xxiii) Control fuses, ferules & wiring complete - 01 Set (xxiv) MS cubical with powder coating - 01 Set (h) Rear cable termination, provision for terminating 1x3 core x 95 sqmm XLPE cable -01 No for incoming and side cable termination box arrangement for terminating 1 x 3 core x 95sqmm for outgoing |
| 31 | Excavation in trenches, not exceeding 1.5m wide and not exceeding 1.5m in depth for foundation, for laying of pipe, cable etc or n. exc.10 Sqm on plan and n. exc. 1.5m in depth for shafts, cesspits, manholes, pier holes, etc and getting out in hard/dense soil complete all as specified and directed. |
| 32 | Returning, filling in excavated approved soil, including spreading, levelling, watering and well ramming in layers not exceeding 25 cm each complete all as specified and directed. |
| 33 | Removing excavated soil not exceeding 50m and depositing where directed at a level not exceeding 1.5m above the starting point including spreading complete all as specified and directed. |
| 34 | Supply and spreading clean and dry fine sand free from sharp materials (unwashed) laying in trenches around the cable for cushioning in trenches, laid to a uniform thickness of 23cm (15cm under the cable & 8cm over the cable) and gently punned down to 18cm thickness complete all as specified and as directed. Note: Only punned sand shall be measured and paid. |
| 35 | Supply and laying un-reinforced precast concrete cable covers, Class HV type 2 with flat size 450 mm x 180 mm x 40 mm, complete all as specified and as directed. |
| 36 | M&L for 80 mm bore GI Tubes in repair of following size, light grade ,galvanised , with clamp of 25x3 flat iron welded to pipe fixed to wall/pole/ceiling or laid in floors or under road etc complete all as specified and as directed. (a) 80mm bore |
| 37 | Drilling (Horizontally) existing road ( Maximum 10 mtr wide) suitable for passing GI tubing upto 80 mm complete all as specified and directed. Please Enable Macros to View BoQ information |
