82268/E8 AUGMENTATION/UPGRADATION OF E/M INFRASTRUCTURE AND CONNECTED MISC E/M WORKS IN TECH AREA AT AFS, SULUR

A. Load Break Switch:- (a) Three position load break with dis-connector and earthing Switch, offload (connected in series with VCB) (b) Operating mechanism with two separate shafts for load break switch function and earthing function. (c) Switch position indication for load break switch and earthing switch. (d) Pad lock provision in LBS. (e) Cable bushings horizontal/vertical provision. (f) Rated voltage not less than 12 kV (g) Rated Current : 630 Amps (h) Rated Short Circuit making current lma : 52.5kA (i) Manual operation of three position switch (TPS ON/OFF, E/SW ON/OFF) (j) SF6 gas pressure monitoring- Ready for service indicator with Red-Green Zone(Auxiliary contacts) (k) No of gas monitoring Device : 1 Nos per SFG6 Vessel. (l) Provn of indication lamp for LBS ON/ OFF, LBS E/S ON/ OFF 230V AC. in two incomings and one outgoing etc (m) “Live Cable” LED Indicators thru Capacitor Voltage Dividers mounted on the bushings in two incomings and one outgoing etc (n) Short time breaking current - 21KA/ 3 sec (o) Auxiliary contacts - 1NO + 1NC (p) Power frequency withstand voltage - 28KV, Impulse withstand voltage - 75KV ® Nominal operating gas pressure - as per IS. (q) Green(ON)/Red(OFF) push buttons to operate

B. Vacuum Circuit Breaker:- (a) Rated Feeder Current : 630 A (b) Insulation Medium : SF6 Gas (c) Arc Quenching Medium : Vacuum (d) Two position double spring mechanism for vacuum circuit breaker. (e) Three position dis-connector with earth switch provisioned at down stream of circuit breakers. (f) interlocking between VCB and dis-connector with earth switch. (g) Switch position of indication for vacuum circuit breaker and dis-connector with earth switch. (h) Rated short time withstand current lk: as per IEC/IS (i) Rated Peak withstand current lp : as per IEC/IS (j) Rated short circuit breaking current Isc : as per IEC/IS (k) Rated short Circuit making current lma : as per IEC/IS (m) VCB opening time : as per IEC/IS (n) Arcing time : as per IEC/IS (o) Breaking Time : as per IEC/IS (p) Hand operated Spring Charging Motor (q) Green and Red coloured switched for VCB ON & OFF position. (r) " Live cable" indicators (s) Including all internal control wiring and accessories connected up to metering module. (t) Self powered electronic protection relay with dual core Cuts and PTs in all phases, with trip coil for tripping closing coil for closing. (u) cable cushioning horizontal/Vertical provision (v) Pad locks

(xv) Strip heater, thermostat or with switch for space heating (xvi) Provision 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) Annuiceator complete with showing type of fault, accept and reset button with OEM recommended windows. (xix) VCB on/off switches, along with position indicators in panel, rotary also shall be provided for trip, off, on in panel for VCB. (xx) Hand crank precision shall be provided for VCB motor if power fails VCB motor shall be charges through hand crank, necessary tools shall provide for hand crank, draw out/in and On/OFF, (xxi) quoted rated deemed to be inclusive of pack foundation , coping and white wash etc.

Supply and laying in trenches / through pipes or bore in road crossings / paths / drains / ducts / floors /along poles/ equipments/ trenches etc. Cable Under ground, cross linked poly-ethylene (XLPE) insulated, screened, PVC bedded, galvanised steel strip armoured, electric power cables with aluminium conductor, earthed,11 KV grade, of cross sectional area 185 Sqmm x 3 core laid including all necessary end terminations, all cable glands, nuts bolts as required complete all as specified and as directed.

Supply and fix 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, Al conductor cable of size 3 core 185 sqmm complete all as specified and as directed.

Supply and installation of Earthing with Galvanised Earth Plate Electrode 600x600x 6mm thick buried directly in Ground (Earth Pit not less than 2.25 Metre below Ground Level) with Top edge of the Plate not less than 1.50 Metre below Ground Level, connected with Galvanised Earth Strip of size 32x6 mm (upto 7.50mm length) by means of Bolts, Nuts, Check Nuts and Washers of GI or Steel and connected Earthing Testing Point/Bus-bar including GI 40mm bore light grade Protection Pipe, Earth Plate surrounded by a packed thickness of Char Coal or Coke Dust mixed with Common Salt, Magnesium Sulphate (1 : 1 : 0.5) in alternate layers of not exc 150mm thick, PCC Pit in Cement Concrete 1:3:6 (20mm graded stone aggregate) and Pre-cast RCC Cover Slab of size 350x350x50 mm in Cement Concrete 1:2:4 (20mm graded stone aggregate), reinforced with 10mm dia TMT Bars @ 100mm Centre to Centre in both ways, GI Wire Mesh, Funnel with GI Watering Pipe 20mm bore medium grade including necessary Excavation in any type of soil, Returning, Filling and Removal of surplus Spoil disposal to out side MD land and all as shown in Electrical Plate No. 3 of MES Schedule Part-I and Testing on Completion including taking down old unserviceable one, complete all as specified and as directed.

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ÊSupply, install, testing and commissioning of 11KV outdoor type non-motorized Ring main unit with internal copper bus bars, consisting of 2 Nos incomer Load break switch and 02 Nos of VCBs . fixed type non draw out Vacuum Circuit Breaker module Air insulated metering module and earthing, capacity of 630 Amps, All live parts, bus bars, connections of RMU shall preferably be enclosed having IP54 degree of protection filled with SF6 gas insulation with metering, with leakage rate less than 0.1% per year tested as per IEC 62271-200. The unit shall have front cable entry for ease of installation and shall have site replaceable bushings for ease of troubleshooting during breakdown. RMU should be complete with all accessories such as Terminal boots, VPIS, cable supports, all front cable terminations, mechanical indications for Load break switch ON/OFF, Manometer as per with latest IEC standards. Bushings bolted type top mounted outside the tank for connection of external bus bar. Also, the outer enclosure shall cover the full length of the switchgear to ensure IP54 protection for cable boxes including provision making of PCC plinth and foundation as recommended by OEM with comprising the followingcomplete :- .\,
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œNote for Item No 7:- (a) All Joints should be joined by tight nut/bolts. (b) After completion of work earthing shall be tested by the contractor in presence of JE/ Engineer-in-Charge, User and proper record shall be maintained duly signed by all concerned. (c) Earth resistance tester shall be provided by the contractor. It should be calibrated from authorized company/ lab. (d) After testing if desired earth resistance of less than 5 Ohm is not obtained, the earthing will be redone at no extra cost to Govt till desired result is obtained. (e) GI strip 32X6mm upto 7.5m shall be included in quoted rates and beyond 7.5 m shall be measured and paid separately.¼Supply, 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 Level III 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. The quoted rates shall deemed to include for the following :-3VK
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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 Copper Type 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 : 3 Primary Wires : 3,Primary rated current : Approx 5.25 Amps, Secondary Connection [LV] : Star, Secondary Volts : 433V,Secondary Phases : 3, þSupply and Installation of factory made stand alone 11 KV Load break switch with 200 Amp drop out (DO) set and earth switch, 3 phase, 50Hz,C22 25 KA for 1 sec factory made, out door type cubicle fabricated out of CRCA sheet 3mm thick weather, dust and vermin proof, epoxy powder coated of IP-55 protection class with self contained air insulated compartment for bus bars and cable boxes with necessary support and 630A rated aluminium bus bar including cable galleries and provision of following switch gears including earthing switch, all pre-wiring with PVC copper conductor cable of suitable size including taking down of the unserviceable panel and provn of PCC foundation as necessary all as specified and as directed as per the below details :- (a) Manually operated air break, load break switch along with earth switch and fuse trip mechanism of HT HRC fuse - 50A, 230 V AC, Trip Coil and Aux Contact 2 No + 2NC. (b) Space heater with ON/ OFF switch 10A, 230V AC. (c) Emergency trip push bottom - 01 (d) Cubical illumination lamp with holder - 01 (e) Door limit switch, 230V AC. (f) Provn of MCB, DP, 10A for control wiring. (g) Provn of surge arrester 9 KV, 10 KA. (h) Provn of thermostat (j) Provn of indication lamp for LBS ON/ OFF, LBS E/S ON/ OFF 230V AC. '(}‹Ž­º
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