REPAIR AND MAINTENANCE OF LT UG CABLES, SWITCHGEARS AND MISC ITEMS AT 58SU AF STATION CHIMNEY HILLS

Amount

Supply and lay LT under ground cable XLPE insulated armoured 1100V grade with multistranded aluminium conductor confirming to relevant IS in trenches, ducts, through pipes fixed to wall etc all as directed including cable gland, terminal socket and connecting up of size 185 sqmm 3.5 core including dismantling of old U/S cable.

All as per item ser No 1 above but of size 35 sqmm 3.5 core

All as per item ser No 1 above but of size 70 sqmm 3.5 core

All as per item ser No 1 above but of size 50 sqmm 3.5 core

All as per item ser No 1 above but of size 25 sqmm 4 core

All as per item ser No 1 above but of size 16 sqmm 4 core

All as per item ser No 1 above but of size 10 sqmm 2 core

All as per item ser No 1 above but of size 10 sqmm 4 core

Excavation in trenches n.exc 1.5m wide and n.exc 1.5m deep and getting out in hard/dense soil for laying/repair of cable.

Returning filling in including spreading levelling watering and well ramming in layers not exceeding 25cm thick.

Removing excavated materials to a distance n.exc 50m and depositing where directed at a level n.exc 1.5m above the starting point.

M&L for all burnt old size bricks, sub class B brick laid dry flat with width equal to length of whole brick, as cable protection complete all as specified and directed.

Supply and filling fine sand to the full width of trench for cushioning of cable for cable protection including spreading and punning down complete all as specified and directed

S&F Straight heat shrink cable joint kit for LT ug cable of size 25/50 sqmm 3.5 core including excavation,refilling of earth work at undergruond cable fault position and making good surface at the fault position complete all as specified and as directed.

All as per item ser No 14 above but of size 70/120 sqmm3.5 core

All as per item ser No 14 above but of size 10/16 sqmm 4 core

All as per item ser No 14 above but of size 150/185 sqmm 3.5 core

S&F GI tubing light grade, 80mm dia in trenches for road crossing/laid in floors etc

All as per item ser No 18 above but 50mm dia

S&F Silicon rubber insulating tape with 25 mm width ,Weather and corrosion resistant all as specified and directed by engineer in charge .

M&L one coat of grey/half white colour synthetic enamel spray paint after preparation of surfaces of existing LT panels/control switch boxes over 10 cm in width or girth complete all as specified and directed

S/F in repair current transformer coil ratio up to 800/5 Amps Class-1 insulation.

Supply and fix phase LED indicator lamp with toggle switches including taking down of fused indicator lamp.

Supply and fix 0-500 volts Voltmeter including taking down unserviceable voltmeter as directed.

Supply and fix Ammeter 0-400 Amp including taking down unserviceable ammeter .

Servicing, commissioning and testing of LT panel including replacement of burnt out lugs, scraping the bus bar chamber with ewary paper, cleaning the bus bar panel with CTC, remove the burnt out electrical wiring and replacement of bolt, nuts, washer and new wiring for metering eqpt, phase sequence RYB with bus bar insulation tapes, heating with blower, reconnecting, testing and commissioning. Note:- (i)Cost of Lugs,Nuts, bolts, washers, insulation tapes, wiring & other connecting items shall be included in unit rate. (ii)Taking down old MCCB and refixing the same will be included above quoted rate .

Supply and install in repair MCCB, 4 pole, 415 v, adjustable type, 400 Amp, 50 HZ, 36 KA including spreader links on both sides complete all as specified and directed

All as per item no.28 above but fixed type, 25 to 100 A and 16 KA

All as per item no.28 above but fixed type, 125 A and 16 KA

All as per item no.28 above but adjustable type, 200 A and 36 KA

All as per item no.28 above but adjustable type, 250 A and 36 KA

All as per item no.28 above but adjustable type, 160 A and 36 KA

Supply and install in repair MCCB, 3 pole, 415 v, adjustable type, 400 Amp, 50 HZ, 36 KA including spreader links on both sides complete all as specified and directed

All as per item no.34 above but fixed type, 125 A and 16 KA

All as per item no.34 above but adjustable type, 200 A and 36 KA

All as per item no.34 above but adjustable type, 250 A and 36 KA

All as per item no.34 above but adjustable type, 160 A and 36 KA

M&L earthing complete with galvanized steel earth plate electrode 60cmx60cmx6mm thick buried directly in ground earth pit not less than 2.25m below ground level with top edge of earth plate not less than 1.5m below normal ground level, connected to galvanized iron strip 32x6mm as a earthing lead by means of bolts, nuts, checks nuts, washers etc made of galvanized of steel, earth strip including and protected by galvanized iron pipe(light grade) 40 mm dia from plate to Panel Board, galvanized iron pipe light grade 20mm dia bore and funnel watering including test point necessary excavation ,earth work, concrete pit M-10, CI cover, frame and funnel,Charchol dust,Salt all as specified in plate No 3 of SSR-1991(part-1) complete all as specified and as directed.

S& F On load change over switch 400 Amps,4 Pole in sheet metal enclosure all as specified and directed .

Supply and fixing TPN distribution boards,Vertical type, protection class IP-43, Double door,4 Way, suitable for mounting MCCB Amps as incomer and MCB SP,TP as outgoing with min 160 Amps rating bus bar ,concealed in wall all as specified and directed by engineer in charge .

Taking down unserviceable Aluminium cable lug 120/150/185 sqmm and supply with fixing the same all as directed..

Taking down unserviceable Aluminium cable lug 50/70/95 sqmm and supply with fixing the same all as directed.

Taking down unserviceable Aluminium cable lug 10/16/25/35 sqmm and supply with fixing the same all as directed.

M&L for dismantling / cutting of existing road / path / hard standing cement concrete (unreinforced) in ground floors and pavings n.exc 15 cm thickness (below or above ground level) suitable for laying cable protection pipe 80 / 50 mm dia under the road / path / hard standing complete.

Material and labour for PCC (1:2:4) type B-2 (using 40 mm graded crushed stone aggregate) for making good the disturbed surface of road/path/hard standing by using cement contrete mortar 1:2:4 type B1, using 40 mm graded stone aggregate 0.45 mtr wide and 0.15 mtr thick complete all as specified and directed. including demolition of old PCC and removing the debris from site complete all as specified and as directed at site by the Engr-in-Charge.

M&L for detection of fault through fault locating high voltage mobile machine to locate the fault in LT cable by giving high voltage surge and to find out exact location of fault all as directed at site. Note :- The item includes transportation ,fuel charges ,charging of machine etc for full functioning of machine up to detecting fault at a time.It is soley bidder's responsibility to arrange fault locating machune & he should not expect facilitation from deptt for the same.

M&L repairs & overhauling of LT ACBs of any capacity of any make by removing out the breaker form the respective panels after taking proper electric shut down & disconnecting the breaker, checking it throughly for the defects & tripping system of the ACB and rectifing them, lubricantion of moveing contacts, overhauling of the ACB, replacement of wornout minor spares like springs, washers, levers, nuts & bolts etc reassembling, reinstallation, testing & comissioning of ACB complete all as directed by EIC. Note: (i) Cost of lubricants, cleaning agents, testing tools and minor spares shall be deemed to be including in quoted rates.

M/S SRI BALAJI ENTERPRISES (BID ID -3249362)

devan enterprises (BID ID -3248143)

Aditya Associates (BID ID -3249396)

Maruthi constructions (BID ID -3248958)

M/S AMRITHESH ENTERPRISES (BID ID -3248637)

KUZHIKKAL ENTERPRISES (BID ID -3247569)

ANAND REFRIGERATION (BID ID -3247464)