Military Engineer Services Tender
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Costs
EMD
₹ 8,38,000Document Cost
₹ 3,000Tender Fee
Refer Documents
Summary
Replacement Of 02 Nos Old Transformers Upgradation Of 30 Nos, Ht Ocbs With Ht Vcbs Against Ber And Converting Overhead Ht Feeders
Description
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Contact
Tender Id
2025_MES_692029_1Tender No
84019Tender Authority
Military Engineer Services ViewPurchaser Address
-Website
http://http://mes.gov.in/
GEM & Bid Advisory Services
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Documents
REPLACEMENT OF 02 Nos OLD TRANSFORMERS UPGRADATION OF 30 Nos, HT OCBs WITH HT VCBs AGAINST BER AND CONVERTING OVERHEAD HT FEEDERS TO UNDERGROUND CABLES INSIDE TECHNICAL AREA OF DRDL, HYDERABAD
REPLACEMENT OF 02 Nos OLD TRANSFORMERS UPGRADATION OF 30 Nos, HT OCBs WITH HT VCBs AGAINST BER AND CONVERTING OVERHEAD HT FEEDERS TO UNDERGROUND CABLES INSIDE TECHNICAL AREA OF DRDL, HYDERABAD
REPLACEMENT OF 02 Nos OLD TRANSFORMERS UPGRADATION OF 30 Nos, HT OCBs WITH HT VCBs AGAINST BER AND CONVERTING OVERHEAD HT FEEDERS TO UNDERGROUND CABLES INSIDE TECHNICAL AREA OF DRDL, HYDERABAD
BOQ Items
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(xi) Sampling valves, top and bottom.
(xii) Under base with flat treaded bi-directional rollers.
(xiii) Drain cum bottom filter valve with plug.
(xiv) Top filter valve with plug.
(xv) Explosion vent with diaphragm and equalizer pipe (pressure release device).
(xvi) Jacking lugs and hauling holes.
(xvii) Inspection cover.
(xviii) Detachable radiators with shut off valves between radiators and tanks.
(xix) Radiator with air release hole and plug. Oil drain hole with plug and lifting eye all as per manufacturer's standards.
(xx) 150 mm dia oil temperature indicator stem type.
(xxi) Double float Buchholtz relay with two sets of contacts and isolating valves.
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(xxii) 150mm dia winding temperature indicator with maximum indicating pointer and resetting device.
(xxiii) 100mm dia magnetic oil level gauge with low level alarm.
(xiv) Terminal arrangements.
(xxv) Suitable wheels.
(xxvi) Marshalling box.
(xxvii) Neutral grounding Resister suitable for 5000 KVA transformer in out door floor mounted enclosure suitable for 45 Degree centigrade Ambient temperature and temperature rise 90 Degree centigrade all as approved by GE.
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(b) On Load Tap Changer (OLTC), outdoor 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 of Make Easun MR / CTR / CGL.
On load tap changer shall have following components:-
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(i) High torque electric motor suitable for 415 volts, 3 phase 50 Hz, AC including cost of connectting with suitable size of copper 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.
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(vii) Retainer switch.
(viii) Stepping Relay.
(ix) Anti condensation heater with switch.
(x) Inter locking between manual and electric operation.
(a) Handle for manual operation.
(b) Auximaliary 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.
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(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.
(xxi) Indoor floor mounted remote control cubicals (RTCC panel, AVR relay) with rear accessories with wiring.
(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.
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(d) Inside eliminating lamp with door switch.
(e) Supply on signals.
(f) On / Off indicating lamp for individual cooling fans.
(g) Suitable details CTs for 3 core to suit full load on transformer.
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Note: (a) All the routine test including single limb impulse test and heat run test shall be carried out at manufacturers factory or approved laboratory and the rate for the same is deemed to be included in the quoted rate.
(b) Transformer shall be inspected by inspecting officers nominated by Chief Engineer R&D at manufacturers factory and all test as per IS : 2026 shall be carried out.
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(c) Site testing: insulation resistance, oil temperature alarm trip, winding temperature alarm and trip, Bucholtz relay alarm and trip, low oil level alram testing of annunciation systems by auxiliary relay tripping of transformer, Polarity marking and phase sequence, Ratio test, dielectric strength and filtration if required.
(d) All control cables are deemed to be inclusive.
(e) Foundation and civil works as per manufactures recommendation.
(f) Excavation, earth work & PCC are deemed to be inclusive in the quoted rate.
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(g) The stud for neutrals shall be sufficient length to fix 02 Nos strip earthing.
(h) Cost of cable entry box on LV 11 KV side for 3 core XLPE cable shall be deemed to be included in the rate quoted.
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(j) Routine test as per IS 2006 shall be conducted and test certificate shall be furnished.
(k) Unit price quoted shall deemed to be included the cost of connecting of trip contacts of busholtz relay and temperature indicator of windings of oil to the trip coil in panel board.
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Supply, installation, testing and commissioning of transformer, outdoor type oil immersed step down 11/0.433 KV, HT with 3 phase and LT with 3 Phase, 4 - wire system double copper wound with off load 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 1000 KVA (Level-II) conforming to IS: 1180 (Part 1) : 2014 Amendment No. 4 Mar 2021 Oil - IS: 335:1993 including first fill of Easter oil, making incoming and outgoing connection to transformer with copper conductor with lugs & glands complete all as specified and directed.
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Note: The rate quoted shall deemed to include the following: -
Temp. Rise in oil [Degree C.] : 40, By Resistance [Degree C.] : 45, Ambient temperature : 50, Winding Material : Copper.
Type of Cooling : ONAN.
Class of Insulation : Class “F”.
Vector Group : Dyn11.
Frequency [Hz.] : 50, Phase : 3.
Insulation Level [kV/Kvp] H.V. : 28/75, L.V. : 3/---.
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Primary Connection [HV] : Delta, Primary Volts : 11000V, Primary Phases : 3.
Primary Wires : 3, Primary rated current : 52.49 A.
Secondary connection [LV] : Star, Secondary Volts : 433V, Secondary Phases: 3, Secondary Wires : 4, Secondary rated current : 1333.42A.
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Taps on Primary Winding for : +5% to -10% in steps of 2.5%.
Primary Voltage Variation Off Circuit Tap Changer.
No. of switch positions : 7.
Terminal Arrangement H.V. : Bare Bushings, L.V : Cable Box.
Load Losses (Level-II).
At 50% Loading : 2620 Watts (Max.).
At 100% Loading : 7000 Watts (Max.).
Impedance (Z) [Percentage].
HV - LV : 4.50%.
No Load Current (% of Rated Current) : Less than 1.5%.
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SUBJECT TO IS: 1180 Level 2 TOLERANCE
a) Core & windings with clamps.
b) Tank & fittings.
c) Oil : Easter oil as per IS.
HV - LV Orientation : 180 deg.
Bushing - IS: 2099 & IS: 3347.
Porcelain bushings HV : 3.
Epoxy bushing LV : 4.
Painting [Finish] : PU Light Grey.
Shade No. 631 - IS: 5.
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TESTS - Routine tests as per IS: 1180 (Part 1): 2014.
(a) Ratio test.
(b) Polarity.
(c) Phase angle error measurement.
(d) I R Values.
(e) Winding resistance.
(f) Open circuit test.
(g) Short circuit & Impedance test.
(h) Separate source voltage test.
(j) Induced over voltage test.
(k) Pressure test.
(l) Oil leakage test.
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STANDARD FITTINGS AND ACCESSORIES:
(a) Rating & terminal marking plate one.
(b) Earthing terminals two.
(c) Lifting lugs two.
(d) Drain valve with blanking plate one.
(e) Filter valve with blanking plate one.
(f) Conservator one.
(g) Conservator oil filling hole with cap one.
(h) Oil Level indicator with min. marking one.
(j) Dehydrating breather one.
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(k) Conservator drain plug one.
(l) Air release device one.
(m) Thermometer pocket one.
(n) Pressure relief valve one.
(o) Roller uni directional four.
(p) Radiators (weld able type) two.
(q) Bare bushings HV three.
(r) Cable box LV one.
(s) Separate neutral terminal one.
(t) Off circuit tap changer one.
(u) 100 mm dia stem type thermometer one.
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Note: (i) The stud for neutral shall be sufficiently long to fix 02 Nos GI strip for earthing.
(ii) Cost of cable entry box on both sides i.e. HV and LV shall be deemed to be included in quoted rates.
(iii) Cost of foundation of transformer shall be deemed to be included in quoted rates.
(iv) Disconnection of HT/LT connections from existing transformer complete including dismantling old transformer and shifting to E/M store and the rate deemed to be included in the quoted rates.
(V) For shifting of transformer, transpotation like vehicle, crane / labour / Forke lift deemed to be included in the quoted rates.
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All as per Sl item No. 2 above, but transformer capacity of 750 KVA.
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All as per Sl item No. 2 above, but transformer capacity of 500 KVA.
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All as per Sl item No. 2 above, but transformer capacity of 400 KVA.
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All as per Sl item No. 2 above, but transformer capacity of 200 KVA.
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All as per Sl item No. 2 above, but transformer capacity of 160 KVA.
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Supplying, installing, commissioning & testing HT 11 KV, 3 Phase 50 Hz, rupturing capacity minimum 250 MVA, indoor type, totally metal clad with-drawout type Vacuum Circuit Breaker outgoing panels with copper bus bar of suitable rating horizontal isolation type VCB as per IEC 62271-100-200. The switchgear panel shall be of sheet steel construction with ALUZINC not less than 2.5 mm thickness for load bearing section and not less than 2 mm thickness for non-load bearing section and shall be totally dust and vermin proof.
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The panel shall be tested for IEC level 25 kA No of operation of Vacuum Interrupter Bottles for better performance
(i) Mechanical life - 30,000 cycles.
(ii) Rated electrical operations - 10,000 cycles.
(iii) Rated short circuit current - as per IEC 62271-100-200. All the main components like VI / VCB / Relays / Meters shall be of same make as per Panel VCB parameters are as below:
(i) Rated voltage level / PF withstand voltage / Impulse level 12KV / 28KV / 75 KVp.
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(ii) Continuous current rating minimum 630 Amps.
(iii) Short circuit withstand current rating 26.3 KA for 3 seconds.
(iv) 01 No. minimum 630 Amps horizontal draw out type vacuum circuit breaker in 12 KV metal clad floor mounted panel complete with following: -
(a) Manually & motor operated (230V AC, 50 Hz) spring charged type, manually and electrically open (electrical (220VDC / AC operation type, incorporating mechanical as well as electrical ON/OFF indication “OFF’ push button, test / service position limit switches, with minimum 6NO+6NC breaker auxiliary contacts in C5 service position.
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(b) Epoxy cast copper wound current transformer (CT) 11 KV, 400-100/5-5A, core 2: class 1, 15 VA for 3 phase, core 2 5P10, 15VA burden class with metering and protection core including necessary wiring.
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(c) Manual charging of breaker should be done without opening the front door.
(d) Cast resin potential transformer 11KV / √3 / 110V / V / 110V / √3, 50VA, class 1.0 Class 3P and HT fuse at the primary end and 04 pole MCB at the secondary end of the PT (Conforming related IS specification)
(A) Protection arrangements for the breaker shall comprise of the following: -
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(i) E/F, O/C & S/C numerical relay.
(ii) Complete with Master Trip / Anti pumping relay.
(iii) Auxiliary Relay Alarm / Trip OTI / WTI.
(iv) Under voltage protection / Cut outer. All relays shall belong to a common platform and shall be of Electronic & nummerical relays.
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(b) The following meters, indications and accessories are to be provided with the panel:
(i) Digital Voltmeter / Ammeter range of applicable range with built in selector switch dual graduated scale 96 x 96 mm dia with shrouded terminal.
(ii) Necessary DC supply with battery backup, healthy indication lamp & switch.
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(iii) Control: (a) TNC (Trip, Neutral & close) breaker control switch with indicating arrangement.
(b) Local / Remote selector switch for breaker open / close operations.
(iv) Multi-function meter for all incomer / outgoing / buscoupler.
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Note: (i) The arrangement of New VCBs will be decided by Engineer-in-Charge at the time of approval of drawing. The arrangement of the VCBs are as per site requirement in 33/11 KV MRS the set of VCBs shall be pre-approved. New VCBs be installed in continuation with existing VCBs / in seprate panels with bus coupler in single configration and shall be connected with copper bus bars of rating 1200 Amps, expenditure on this account for dummy breaker & bus bar chamber shall be deemed to be included in the quoted rate.
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(c) Energy meter 3 phase, 3 wire, 2 elements, suitable CT ratio flush mounting 01 No on each unit.
(d) Semaphore indicator 48mm dia 110V DC - 03 Nos.
(e) Semaphore indicator 63 mm dia, 110 V DC - 01 No.
(f) Breaker control switch with lost motion device - 01 No.
(g) Transformer differential relay type DTH 31, suitable for 1A, Aux, supply 110 V DC size 3 DV.
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(h) Over current cum earth fault relay numerical type relay with 03 Nos O/C elements with suitable setting range, 01 No E/F element with suitable setting range.
(j) High speed trip relay type suitable for 110 V DC - 01 No.
(k) Bell suitable for 240 V, AC - 01 No.
(l) DP MCB 10 A, 4A - 02 Nos.
(m) 240 V,100 W space heater with thermostat and toggle switch - 01 Set.
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(n) 20 watts LED light with door switch -01 set.
(o) Aux plug in type relay with change over contacts and 11 pin socket suitable for 110 V DC - 07 Nos.
(p) Aux plug in type relay with change over contacts and 11 pin socket suitable for 240 V AC.
(q) Test terminal block 3 phase, 3 wire, suitable for rear connections - 01 No.
(r) 3 way Ammeter selector switch - 01 No.
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(s) 3 way voltmeter selector switch - 01 No.
(t) Indicating lamps 110 V DC, 22.5mm dia suitable for 110 V DC - 01 No.
(v) Indication lamps 110 V DC 22.5mm dia suitable for 240 V AC - 01 No.
(u) Trip Ckt, supervision relay type suitable for 110 V DC - 01 No.
(w) CT for operation of differential relay on HV/LV in MRS panel.
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Note: (i) All control cable required at site including civil work for fixing of VCB shall be provide by the contractor as per manufacturer instructions. Including cost of making good the disturbed surface i.e. PCC, plastering / filling putty alongwith matching with the existin colour with MES of approved make of distemper without any extra cost.
(ii) Pre-dispatch inspection of VCB shall be carried out by representative of Accepting Officer. All arrangements for the same shall be made by the contractor within overall quoted cost.
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All as per Sl item No. 8 above, but in configuration of
(i) Incomer VCB 800 A - 03 Nos.
(ii) Bus coupler VCB 800A - 03 Nos.
(iii) Out going / Spare VCB 630 Amps-16 Nos.
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Supply & fabrication of moduler LT Panel Board IEC-61439 cubical type made of 3.15 mm thick sheet steel indoor type with IP 43 grade of protection CRCA sheet powder coated with support of angle iron of 50 x 50 x 6 mm with double hinged front openable shutters of each feeder control unit with locking arrangement in front and back openable inspection doors PVC sleeved aluminium bus bar of 1200 Amps, 415V capacity for each phases and neutral fixed on suitable insulator all housed in suitable bus bar chamber and cable alley and provision and fixing of LED digital Voltmeter, Ammeter with built in selector switch, CTs of suitable ratio, and pilot indication lamps connecting incoming and out going cables with suitable cable glands etc with suitable PCC foundations complete testing and commissioning complete and consisting the following against BER panels of different locations: -
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4 pole, 415 V, Microprocessor based MCCB, 630 Amps, (as incoming)
Outgoing:-
MCCB, 4P, 320 Amps, 36 KA - 01 No (Microprocessor based)
MCCB, 4P, 500 Amps, 36 KA - 01 No (Microprocessor based)
MCCB, 4P, 400 Amps, 36 KA - 01 No (Microprocessor based)
MCCB, 4P, 100 Amps, 25 KA - 04 Nos (Microprocessor based)
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Supply, laying & testing, cable XLPE insulated, screened, PVC bedded, galvanized steel strip or wire armoured, earthed electric power cables (heavy duty) with stranded aluminium conductor, 11000 volts grade of size 3 core 240 sq mm complete all as specified and directed.
350
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Supply, fixing, commissioning & testing of NGR (Neutral and Ground Resister) comprising of pumched stainless steel grids (AISI-304) assembled and mounted on mica insulated MS hardware, housed in epoxy powder coated 2mm thick CRCA enclosure, with naturally air cooled with the following technical specification: -
MVA rating: 5 MVA, Ref standard : IEEE32, Rated voltage 11/root3 KV, Rated current 262.1 Amp, Resistance : 24.2 Ohm, Temp rise above ambiant : 50 degree centigrade, Duty cycle : 10 Sec all as specified and directed by Engineer-in-Charge.
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Supply, laying & testing, cable XLPE insulated, screened, PVC bedded, galvanized steel strip or wire armoured, earthed electric power cables (heavy duty) with stranded aluminum conductor, 11000 volts grade of size 3 core 185 sq mm complete all as specified and directed.
7180
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Supply, laying & testing, cable XLPE insulated, screened, PVC bedded, galvanized steel strip or wire armoured, earthed electric power cables (heavy duty) with stranded aluminum conductor, 11000 volts grade of size 3 core 120 sq mm complete all as specified and directed.
590
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Supply, laying & testing, cable XLPE insulated, screened, PVC bedded, galvanized steel strip or wire armoured, earthed, electric power cables (heavy duty) with stranded aluminum conductor, 11000 volts grade of size 3 core 95 sq mm complete all as specified and directed.
585
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Excavation in trenches n.exc. 1.5 m wide and n.exc. 1.5 m deep for foundation of poles / stay / cable trenches etc, including getting out in any type of soil complete all as specified and directed by Engineer-in-Charge.
2000
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Excavation in trenches exc. 1.5m but n.exc. 3 m deep and getting out in any type of soil for pole foundation laying of cable complete all as specified and directed by Engineer-in-Charge.
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Returning, filling in soils including spreading, levelling, watering and well ramming in layers n.exc. 25cm thick complete all as specified and directed by Engineer-in-Charge.
1100
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Removing surplus soil to a distance n.exc 50m and deposited where directed at a level n.exc 1.50 m above the starting point complete all as specified and directed by Engineer-in-Charge.
900
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M&L for sand cushioning for underground cables 8cm thick before laying cable and 15cm thick after lying and streching the cable complete and punning the sand cushioning to 18cm thick all as specified and directed by Engineer-in-Charge.
Note: For payment purpose punned thickness shall be measured and paid seprately.
600
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Supplying & laying unreinforced precast concrete cable cover, class HV, type 2, flat, size 450mm x 180mm x 40mm complete all as specified and directed by Engineer-in-Charge.
36000
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M&L for servicing and calibration of Tap Changer panels with new power transformer including replacement of wornout parts as well as complete wiring if required upto the power transformer and testing and commissioning the tap changer panel with full satisfaction of Engineer-in-Charge.
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M&L for calibration of existing SCADA system with RTU panels with new VCBs and new power transformer including testing and commissioining all as per satisfaction of Engineer-in-Charge.
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M&L for earthing complete with Galvanised steel earth plate electrode 60cm x 60cm x 6.3mm, buried directly in ground (earth pit not less than 2.25m deep below ground level) with top edge of the plate not less than 1.5m below ground level connecting to and including GI strip 32 x 6 mm protected with GI medium grade pipe 40mm dia for earth electrode upto test point or upto 7.5m by means of bolts, nuts, check nuts and washers all shown in electrical plate No 3 (of SSR Part-I) connected to earthing test point all as specified or indicated including provision of necessary excavation and earth work of any type of soil, PCC pit, RCC cover, 50mm thick with 8mm dia TMT bar @ 100cm c/c both way, 20mm bore light grade watering pipe, water funnel, common salt, charcoal dust, returning filling, in of soil, removal of soil to a distance of not exceeding of 50m etc, including testing on completion complete.
74
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Supply, fixing & providing, 25 mm x 5 mm G.I. strip in 40 mm dia G.I. pipe from earth electrode including connection with G.I. nut, bolt, spring, washer excavation and re-filling etc, as required complete all as specified and directed.
140
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Supply, install & erect in true vertical postion steel tubular swaged pole type 410 SP-55 of 11.0 mtrs long complete with cast iron base plate finial taper plug, pole cap, bolts, nuts and washers pole made out of MS tubing confirming to IS-2713 Part-II, including drilling of holes painting with two coats of bituminous paint internally and externally embedded portion in ground / concrete and painting to exposed surfaces with two coats aluminium paint and one coat of red oxide primer complete all as specified and directed.
Note: Excavation / earth work in any type of soil / strata PCC foundation, coping of poles, cross arms, clamps shall be measured and paid separately.
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M&L for 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 for two pole structures complete all as specified and directed.
4
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S&F, 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, aluminum conductor cable of size 240 Sqmm outdooor complete all as specified and directed.
10
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S&F, cable jointing kit for 11 KV grade cable for indoor termination, cold shrink type, joint complete with jointing material and accessories suitable for 3 core XLPE, armoured, aluminum conductor cable of size 240 Sqmm indoor complete all as specified and directed.
2
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S&F, cable jointing kit for 11 KV grade cable for outdoor termination, heat shrink type, joint complete with jointing material and accessories suitable for 3 core XLPE, armoured, aluminum conductor cable of size 185 Sqmm outdoor complete all as specified and directed.
48
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S&F, cable jointing kit for 11 KV grade cable for indoor termination, heat shrink type, joint complete with jointing material and accessories suitable for 3 core XLPE, armoured, aluminum conductor cable of size 185 Sqmm indoor complete all as specified and directed.
23
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S&F, cable jointing kit for 11 KV grade cable for outdoor termination, heat shrink type, joint complete with jointing material and accessories suitable for 3 core XLPE, armoured, aluminum conductor cable of size 120 Sqmm outdoor complete all as specified and directed.
22
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S&F, cable jointing kit for 11 KV grade cable for indoor termination, heat shrink type, joint complete with jointing material and accessories suitable for 3 core XLPE, armoured, aluminum conductor cable of size 120 Sqmm indoor complete all as specified and directed.
5
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S&F in replacement lightening arrester expulsion type complete with all fittings, transmission class, discharge capacity 65 kilo Amp rupturing capacity 65 kilo Amps pocelain conforming to IS-3070 Part-I suitable for 11 KV, HT over head line complete including nuts, bolts, clamps, bracket etc and connecting with GI earth wire, discharge capacity 65 kilo Amps complete all specified and directed.
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Supply, installation, connecting, testing & commissioning outdoor type 11 KV, 630 Amps, Extensible Outdoor Fixed Type (IP54), RMU (Ring main unit) 3 -way comprising of 02 Nos, 630 Amps, motor operated Load Break Switch (Comprising two Nos. incomers) & 1 No. motor operated SF-6 insulated Vacuum Circuit Breaker as outgoing, inside robotically / manually / TIG welded stainless steel 304 (Non Ferrite Non Megnetic Grade) filled with SF6 gas at suitable pressure in accordance with the IEC 60298, tank having min. thickness 2.5+0.5 mm having IP 67 Degree of Protection.
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RMU should be provided with internal busbars, as well as earthing busbars should be of copper, padlock provisions & complete with all accessories. The RMU shall be type tested for Internal arc test of 21kA/1 sec as per IEC: 62271-200. RMU shall be equipped with site replaceable bushing. The earthing busbar shall be provided inside each cable compartment for solid earthing of cable.
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Sheilds: The outer enclosure main door should cover entire part of the switchgear including front cover and cable doors for providing complete IP 54 protection including raised foundation of suitable size, minimum 50 cm above and 01 meter below the natural ground levels all as per manufacture's drawing. The unit shall include the following with all necessary standard fitting as required at site.
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(a) 02 Nos. Incoming Load Break Switch module should consist of following accessories:
630A Load Break Switch module for making and breaking of fault current alongwith, earth switch of full making capacity, short time current - 21KA / 1 sec, making capacity - 50KA, Auxiliary contacts - 1NO + 1NC, Power frequency withstand voltage - 28KV, Impulse withstand voltage - 75KV, Nominal operating gas pressure - 1.3 (minimum) Bar abs,
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Front cover mechanism - IP2X, Cable covers - 3X, Snap action mechanism for manual operation, Cable box for front termination of the cable suitable upto 3 core 400 Sqmm, 11 KV XLPE cable
Right angle boots (push on type), suitable site replaceable cable bushings, Arc proof cable covers with self interlocking mechanism with earth switch, capacitive voltage indication fixed type system as per IEC61243, Ronis key interlock between both incomers.
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(i) Impulse withstand voltage-75kVP (an attitude1000 m above msl).
(ii) SF6 Gas pressure indicator.
(iii) 230V AC shunt trip coil for external trip signal.
(iv) Live cable indicating LEDs energised through capacitive voltage dividers.
(v) All feeders of RMU shall be provided with multifunction meters having complete range of measurement including maximum demand and shall have serial port for communication.
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(vi) Metering compartment of RMU shall be provided with auxiliary transformer of suitable capacity to supply power to batterry charger.
(vii) Integral earthing switch with making switch.
(viii) Emergency trip push button.
(ix) Transformer card for auxiliary protection.
(x) RMU shall be provided with 3 core metering and protection CTs minimum ratio for protection CTs shall be 400-200-100/5/1, 5P10, 2.5 VA and and for metering CT shall be 200/5/1A Class 1, 2.5 VA.
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(b) Outgoing breaker module should consist of following accessories:
(i) 630A Vaccum Circuit Breaker module for making and breaking of fault current alongwith earth switch of full making capacity. VCB should be capable to bear 40 dead short circuit operation.
(ii) Short time current - 21KA/1 sec.
(iii) Making capacity - 50KA.
(iv) Auxiliary contacts - 1NO + 1NC.
(v) Power frequency withstand voltage - 28KV.
(vi) Impulse withstand voltage - 75KV.
(vii) Nominal operating gas pressure - 1.3 (minimum) Bar abs.
(viii) Front cover mechanism - IP2X.
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(ix) Cable covers - 3X.
(x) Stored enegry mechanism for motor operation - 24VDC.
(xi) Cable box for front termination of the cable suitable upto 3 core 400 Sqmm, 11 KV XLPE cable.
(xii) Right angle boots (push on type).
(xiii) Self powered microprocessor based Relay (3 O/C & E/F) with standard settings.
(xiv) Digital multifunction meter (A, V, KW, KVA, F, PF) with RS 485 port type.
(xvii) Suitable site replaceable cable bushings.
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(xviii) Arc proof cable covers with self interlocking mechanism between doors, earth switch, disconnector & VCB.
(xix) Capacitive voltage indication fixed type system.
(xx) Mechanical indications for breaker ON, OFF, earth, trip, Spring Charged-Discharged.
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(c) Bus connected PT unit - 01 No. for metering consisting of following: -
(i) Type M: Air insulated metering module 12KV, 630A, 21KA for 1 sec - 3 Voltage transformers of the ratio 11kV / √3 / 110 V / √3, 50 VA, Class 1.0 with HT fuses on primary side and MCB on secondary side.
(ii) Microprocessor based IDMT (50, 50N, 51, 51N) relay for overcurrent, short circuit and earth fault protection.
(iii) 1 LED Illumination.
(iv) 1 Space Heater with thermostat.
(v) Each RYB phase indications for 2 incomings and 1 outgoing.
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(vi) 1 Cable support bus bars, standard for 3 way unit.
(vii) 1 set Bushings for external busbar connection along with Busbar cover & Sleeved busbars for coupling.
(viii) 2x12 V Battery with battery charger with suitable burden for motor operation. Input 230 V AC & Output 24 V DC.
(a) Capacitive voltage indication fixed type VPIS 9-15 KV.
(b) Necessay interclocking arrangement for safety and operations.
(c) One No. Operationg Handle for Manual Operation.
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(d) One No. Manometer.
(e) Safety interlocks shall be provided as per relevant IEC/IS standards and manufacturers directions.
(f) Above switchgear shall confirm to all relevant IEC/IS standards.
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(g) Manual operation of Vacuum Circuit Breaker should be possible without dismantling the motor from RMU. The motor should be fitted in such a way that it should not be outside front covers of RMU.
(h) Coupling of RMU and metering module should be with the help of bolted type arrangement, so that the coupling at site shall be easy. Plug-in type bushing shall not be acceptable.
(j) All cable bushing should be replaceable type.
(k) Module should be accommodated as per manufacture's design.
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(l) RMU cable box shall be front accesible type to have easy access to protection and metering CTs. Vaccum interupter should be of same make. Cable box should be arc proof with bolted door and interlocked with respective earthing switchs. Doors should be removable for the ease aceess to terminate cables.
Note: The contractor will submit NABL accredited lab test reports of the RMU's in original and the same shall be produced well before claiming RAR payment of the RMU.
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Supply, installation, connecting, testing & commissioning outdoor type 11 KV, 630 Amps, Extensible Outdoor Fixed Type (IP54), RMU (Ring main unit) 5-way with Bus metering Unit comprising of 02 Nos 630 Amps, manually operated Load Break Switch (Comprising 02 Nos. Incomers) & 02 Nos. motor operated Vacuum Circuit Breaker as Outgoing and 01 No. bus sectionalizer consist of motor operated Load break switch.
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All LBS, VCB and bus sectionalizer shall be enclosed inside robotically / manually / TIG welded stainless steel 304 (Non Ferrite Non Megnetic Grade) filled with SF6 gas at suitable pressure in accordance with the IEC 60298. Tank having min. thickness 2.5+0.5 mm having IP 67 Degree of protection. RMU should be provided with internal busbars, as well as earthing busbars should be of copper, padlock provisions & complete with all accessories. The RMU shall be type tested for Internal arc test of 21kA/3 sec as per IEC62271-200. RMU shall be equipped with site replacable bushing.
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The earthing busbar shall be provided inside each cable compartment for soild earthing of cable sheilds. The outer enclosure main door should cover entire part of the switchgear including front cover and cable doors for providing complete IP 54 protection including raised foundation of suitable size, minimum 50 cm above and 01 m below the natural ground levels and all as per manufacture's drawing. The unit shall include the following with all necessary standard fitting as required at site.
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(a) 02 Nos. Incoming Load Break Switch module should consist of following accessories:
630A Load Break Switch module for making and breaking of fault current alongwith earth swicth of full making capacity, short time current - 21KA/ 1 sec, making capacity - 50KA, Auxiliary contacts - 1NO + 1NC.
Power frequency withstand voltage - 28KV, Impulse withstand voltage - 75KV, Nominal operating gas pressure - 1.3 (minimum) Bar abs, Front cover mechanism - IP2X, Cable covers - 3X
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Snap action mechanism for manual operation. Cable box for front termination of the cable suitable upto 3 core 400 Sqmm, 11 KV XLPE cable, Right angle boots (push on type).
Suitable site replaceable cable bushings. Arc proof cable covers with self interlocking mechanism with earth switch capacitive voltage indication fixed type system as per IEC-61243
(i) Impulse withstand voltage-75kVP (an attitude1000 m above msl).
(ii) SF6 Gas pressure indicator.
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(iii) 230V AC shunt Trip coil for external trip signal.
(vi) Live cable indicating LEDs energised through capacitive voltage dividers.
(v) All feeders of RMU shall be provided with multifunction meters having complete range of measurement including maximum demand and shall have serial port for communication.
(vi) Metering compartment of RMU shall be provided with auxiliary transformer of suitable capacity to supply power to batterry charger.
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(vii) Integral earthing switch with making switch.
(viii) Emergency trip push button.
(ix) Transformer card for auxiliary protection.
(x) RMU shall be provided with 3 core metering and protection CTs minimum ratio for protection CTs shall be 400-200-100/5/1, 5P10, 2.5 VA and for metering CT shall be 200/5/1A Class 1, 2.5 VA.
(b) 01 No. busbar sectionalizer module should consist of following accessories:
Sectionalizer load break switch 12kV, 630A.
Snap action mechanism for manual operation.
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(c) Outgoing breaker module should consist of following accessories:
(i) 630A Vaccum Circuit Breaker module for making and breaking of fault current alongwith earth swicth of full making capacity. VCB should be capable to clear 40 dead short circuit operation.
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(ii) Short time current - 21KA/ 1 sec.
(iii) Making Capacity - 50KA.
(iv) Auxiliary contacts - 1NO + 1NC.
(v) Power frequency withstand voltage - 28KV.
(vi) Impulse withstand voltage - 75KV.
(vii) Nominal operating gas pressure - 1.3 (minimum) Bar abs. (viii) Front cover mechanism - IP2X.
(ix) Cable covers - 3X.
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(x) Stored enegry mechanism for motor operation - 24VDC.
(xi) Cable box for front termination of the cable suitable upto 3 core 400 Sqmm, 11 KV XLPE cable.
(xii) Right angle boots (push on type).
(xiii) Self powered microprocessor based Relay (3 O/C & E/F) with standard settings.
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(xvi) Digital multifunction meter (A, V, KW, KVA, F, PF) with RS 485 port type Rishabh / Elmeasure.
(xvii) Suitable site replaceable cable bushings.
(xviii) Arc proof cable covers with self Interlocking mechanism between doors, earth switch, disconnector & VCB.
(xix) Capacitive voltage indication fixed type system.
(xx) Mechanical indications for breaker ON, OFF, earth, trip, spring Charged-Discharged.
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(d) Bus connected PT unit - 02 Nos. for metering (01 No. metering module for each breaker) consisting of following:-
Type M: Air Insulated metering module 12KV, 630A, 21KA for 3sec.
(i) 3 Voltage transformers of the ratio 11kV/√3 / 110 V/√3, 50 VA, Class 1.0 with HT fuses on primary side and MCB on secondary side.
(ii) Microprocessor based IDMT (50, 50N, 51, 51N) relay for overcurrent, short circuit and earth fault protection.
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(iii) 1 LED Illumination.
(iv) 2 Space Heater with thermostat.
(v) Each RYB phase indications for 2 incomers and 2 outgoings.
(vi) 1 Cable support bus bars, standard for 5 way unit.
(vii) 1 set Bushings for external busbar connection alongwith busbar cover & sleeved busbars for coupling.
(viii) 2 x 12 V battery with battery charger with suitable burden for motor operation. Input 230 V AC & Output 24 V DC.
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(a) Capacitive voltage indication fixed type VPIS 9-15 kV.
(b) Necessay interclocking arrangement for safety and operations.
(c) One No. Operationg Handle for Manual Operation.
(d) One No. Manometer.
(e) Safety interlocks shall be provided as per relevant IEC/IS standards and manufacturers directions.
(f) Above switchgear shall confirm to all relevant IEC/IS Standards.
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(g) Manual operation of circuit breaker should be possible without dismantling the motor from RMU. The motor should be fitted in such a way that it should not be outside front covers of RMU.
(h) Coupling of RMU and metering module should be with the help of bolted type arrangement, so that the coupling at site shall be easy. Plug-in type bushing shall not be acceptable.
(j) All cable bushing should be replaceable type.
(k) Module should accommodate as per manufacture's design.
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(l) RMU cable box shall be front accesible type to have easy access to protection and metering CTs. Vaccum interupter should be of same make. Cable box should be arc proof with bolted door and interlocked with respective earthing switchs. Doors should be removable for the ease aceess to terminate cables.
Note: (i) The contractor will submit NABL accredited lab test reports of the RMU's in original and the same shall be produced well before claiming RAR payment of the RMU.
(ii) Pre-despatch inspection shall be carried out by Rep of Accepting Officer. All arrangement for the same shall be provided by the contractor and shall be considered within quoted rates.
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M&L for provision of 02 Nos of RCC piller at the both side of the power transformer of size 60cm x 45cm upto a height of 3mtr above the ground and 1 mtr below the ground for fixing of 02 Nos of industrial type heavy duty fan of 650mm sweep for cooling of the transformers in peak summer incuding the control wiring from the substation n.exc a distance of 500mtrs all as specified and directed by Engineer-in-Charge.
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M&L for fixing cable route indicators made of PCC (1:3:6) including CI part indicator brown colored of circular shape of dia 150mm fixed on angle iron of size 40 x 40 x 4mm not less than 0.3mtr of height over the PCC duly engraved "HT cable / HT cable joint" PCC block size 150 x 150 x 900mm fixed on 300mm below ground level complete all as specified and directed.
80
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M&L for dismantling and shifting of existing unserviceable transformer of different capacity (100 KVA to 5000 KVA) to the location given to the contractor not more than 5 Km from the working site and keeping safely where directed including dismantling, loading and transportation and unloading all as specified and directed by Engineer-in-Charge.
14
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M&L for dismantling and shifting of existing unserviceable / serviceable OCB / VCBs of various capacity to the location given to the contractor not more than 5 Km from the working site and keeping safely where directed including dismantling, loading and transportation and unloading and connection at different place or at MES storeyard all as specified and directed by Engineer-in-Charge.
30
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S&F, GI pipe of dia 100mm light grade including necessary GI fittings such as bends, elbows, nipple, sockets, unions, reducers, tees etc complete all as specified and directed.
60
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M&L for cutting existing road / PCC of size 45cm width x 90cm depth for taking out / laying of underground cable and including necessary earth work and making good to match with the existing surface 100mm thick top layer with PCC 1:3:6 type C1 using 20mm graded aggregate complete all as specified and directed by Engineer-in-Charge.
30
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M&L for brick work with sub class 'B' bricks, straight or curved on plan exceeding 6m mean radious built in CM 1:6 complete all as specified and directed.
16
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M&L for preparation of new plastered or unplastered surfaces and applying two coats of cement based paint over a coat of chalk white primer on walls complete all as specified and directed.
120
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M&L for cement concrete 1:2:4 type B2 75mm thick (40mm graded agreegate) in steps, coping, transformer, cable ducts, supports etc slightly rounded or chamfered complete all as specified and directed.
60
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Taking up and re-laying HT cable of any size LT/HT all as specified and directed if in any case falling in the way of HT cable work all as specified and directed by Engineer-in-Charge.
Note: Necessary excavation taking out of brick, sand and stacking properly for reuse, taking out of existing cable and laying the same at a distance n.exc 100mtr as directed by Engineer-in-Charge and reuse the protection cover and sand including refilling and removing the surplus material at a distance n.exc 50mtr all as directed. The quoted rate shall be deemed included cost of all above works.
200
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M&L for boring of holes under road, pavement, hard standing by trenchless technology using ultra sound technic with proper equipment including provision of HDPE pipe heavy duty 150 mm dia wherever required as per direction of Engineer-in-Charge.
40
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