Military Engineer Services Tender

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Military Engineer Services - MES Tender

Works
Electrical and Electronics
Electrical Works
Eprocure
Opening Date21 Sep 2024
Closing Date21 Oct 2024
Tender AmountRefer Documents 
Notes
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Costs

Description

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Documents
SPECIAL REPAIR OF OLD DAMAGED/UNSERVICEABLE HT U/G CABLE FROM 33/11 KV MRS SHIVAJI LINE TO 509 ASC BN SUB STATION UNDER GE (U) E/M MEERUT CANTT
Financial Bid Schedule A
Particular Specifications and Key Specification
General Conditions of Contract and Schedule of Minimum Wages
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BOQ Items

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(ii) Voltage variation on supply side : ±10 %

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(iii) Corresponding Highest System Voltage: 12kV.

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(iv) Frequency : 50 Hz with ± 3 % tolerance

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(v) Transient condition : -20 % or + 10 % combined variation of Voltage and frequency.

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(vi) Number of Phase : 3 Phases.

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(vii) Neutral earthling : Solidly earthed.

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(viii) Fault level (minimum) kA /Sec : 21/3).

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(ix) Lightning Impulse Withstand Voltage (kVp) : 75

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(x) One minute dry/wet power frequency withstand voltage primary (kV rms) : 28KV

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(xi) Rated Dynamic Withstand Current for 1 second duration (kAp) : 52.5KA

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(B) Applicable Standards for this RMU scope of work

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(i) The design, manufacture and performance of the Ring Main Units shall comply with all currently applicable statutes, regulations and safety codes. Nothing in this specification shall be construed to relieve the bidder off his responsibilities.

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(ii) Unless otherwise specified, the Ring Main Units shall conform to the latest applicable, IEC 62271-100, IEC 62271-200.

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(iii) All live parts, bus bars, shall preferably be enclosed in one tank to avoid multiple inter connections & sealed for life robotically welded non magnetic and non ferrite grade stainless steel tank Grade SS304 of minimum 2.5 mm thickness.The RMU shall be type tested for internal arc test of 21KA/1 sec AFLR as per IEC62271-200. The outer enclosure shall cover the full length of the switch gear, to ensure IP54 protection for full door covering of complete switchgear. The protection relay shall be for 3 O/C + 1E/F (IDMT Type) Self powered numerical protection relay with low and high set of over current and earth fault , MODBUS communication along with Rs 485 Port .

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(iv) No additional plate/ accessories to be add to achieve Internal Arc of the Cable of 21kA-1sec, in the cable box chamber. RMUs shall be manufactured, inspected and invoiced from the OEM factory only; no licensee partner manufactered RMU is acceptable.

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(v) The SF6 gas filled 11 kV, 630 Amps, extensible type, Outdoor, SCADA compatible Motorized Ring Main Unit with Vacuum Circuit Breaker to be supplied against this specification shall be suitable for satisfactory continuous operation under the following tropical conditions, design ambient temperature (Degree C) 40 as per IEC.

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(C) The unit shall include the following with all necessary standard fitting as required at site:

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(i) Digital multimeter, Cl-1.0 complete set (Make : Elmeasure / conzerv /Rishabh)

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(ii) Power bank suitable for RMU

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(iii) Auxiliary relay for OTI, WTI, bucholz for out going transformer complete as per site requirment

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(iv) Auxiliary Transformer stepdown 11kv to 230V of capacity 500 VA for battery charger.

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v) Load Break Switch 12kV 630Amps 21kA-3sec with copper bus Bar and earth switch fitted with fixed type voltage indicator device and fault passes indicator (FPI) will be provided on each load break switch as per IEC.

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(vi) Vacuum Circuit Breaker 12kV 630Amps 21kA-3sec and fault making type Earthing Switch with micro-processor based selfpowered 3O/C + 1E/F relay fitted with fixed type voltage indicator device as per IEC 61958. Protection CTs suitable ratio 2.5VA burden (CT ratio shall be confirmed at time of drawing approval).-for all VCBs of RMUs

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Note: Standard mano meter -01 for each tank, Operating handle - 01, cable clamping provision (standard)-01/for every cable entry suitable for 1RX3C cable upto 300Sqmm, Operation and maintenance manual - 01, RMU Foundation (Earth Work and PCC works) for placing RMU on plinth is deemed to be included in the cost quoted. Height of plinth should not be less than 0.5 mtrs from ground level.

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All as per item No 1 above but RMU (Ring Main Unit) 3-way comprising of 02 Nos motorized operated load breaker switches and 01 Nos 630 Amps fixed type motorized spring charging VCB.

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Excavation in trenches in soft/loose soil not exc. 1.5 m wide and not exc. 1.5 m depth and getting out, including trimming the sides and forming bottom surface to required levels for fixing pole/stay assembly and laying/taking out cables complete all as specified and directed.

395

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Returning, filling in, including spreading, levelling, watering and well ramming in layer not exceeding 25 cm thick in soft/loose soil complete all as specified and directed.

306

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Removing of excavated material (soils) to a distance not exceeding 50m and dispositing where directed at a level not exceeding 1.50 m above the starting point complete all as specified and directed.

120

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M&L Sand cushioning to UG cables (8cm deep before laying of cable and 15 cm deep over the cable) completed all as specified and directed. Note:- Punned thickness only will be considered for payment.

79

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Supplying and laying un-reinforced precast concrete cable covers class HV, Type I, flat, size 300mm x 180mm x 40mm, ISI marked complete all as specified and directed.

4875

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Supply and fixing cable jointing kit for HT 11KV grade cable for straight through joint suitable for XLPE armoured aluminium conductor cable of 120 to 185 Sqmm size, 3 core complete with jointing material (Heat shrink type) with accessories and testing after jointing complete all as specified and directed. Make:- Raychem/M-Seal/Cab-Seal

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Supply and fixing cable jointing kit termination indoor type for HT 11KV grade cable for end termination joint suitable for XLPE armoured aluminium conductor cable of 120 to 185 Sqmm size, 3 core complete with jointing material (Heat shrink type) with accessories and testing after jointing complete all as specified and directed. Make:- Raychem/M-Seal/Cab-Seal

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Supply, laying & testing cable XLPE insulated, screened, PVC bedded, galvanized steel strip or wire armoured, electric power cables (heavy duty)with stranded aluminium conductor, 11000 volts grade, of size 3 core 120 sq mm. Make; KEI,Havells,Grandlay

1464

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Supply & fixing or laying galvanised steel tubing light grade (ISI marked) of 100mm bore for protection of under ground cable on poles/ walls/under road crossing etc including suitable size iron clamps with nuts, bolts & washers for proper fixing of pipe complete all as specified and directed.

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M&L for boring in any type of soil by convential method under road 1.5 Mtr below the top surface of road complete for passing through 100mm dia GI pipe and filling earth after laying of pipe including disposal of surplus soil complete all as specified and directed. NOTE:- Pipe will be measured and paid for separately. Any damage to existing cables of any type & road will made good by the tenderer without any extra payment.

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Earthing complete with galvanised MS earth plate of size 600 x 600 x 6mm thick burried directly in ground not less than 2.25 Mtr below ground level, earth plate paced on all side with charcoal mixed with salt to a thickness of 150mm in layers, connected g, soldered and revetted to earth plate galvanized strip 32x6mm by means of bolts, nuts , check nuts and washers of galvanised iron or steel. GI earth wire will be protected by using 40mm bore GI pipe (light grade) from test point to main board. The earthing includes PCC pit chamber, RCC pit cover and frame, watering pipe 20mm bore, funnel with wire mess with necessary earth work including disposal of surplus soil to a distance not less than 50 Mtr etc complete all as specified and shown in electrical plate No 3 of SSR Part-I.

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Supply & fixing HT PCC cable route indicator of size 175mm x 150mm thick, 75 cm long and upper front side each indicator shall be embracing 4mm deep with words "HT CABLE" and two coats of synthetic enamel yellow and red paint along HT cable trench after every 100Mtr and corner & on any turnning, road crossing etc including planting in ground with PCC (1:3:6) type C-1 complete all as specified and directed.

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Dismantling steel poles/PCC pole/ struts, any size from ground after necessary excavation etc and removing including making good disturbed ground complete all as specified and directed.

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Dismantling of ACSR or AAC complete all as specified and directed.

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Dismantling air break gang operated switches vertical/horizontal mounted including insulators and operating mechanism complete all as specified and directed.

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Dismantling cross-arms of M.S. channel or angle sections etc. complete and setting aside for re-use with in 50m complete all as specified and directed.

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Dismantling insulators any type, any size complete all as specified and directed.

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Dismantling stay assembly complete all as specified and directed.

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