SPECIAL REPAIRS TO HT UG CABLE AND ALLIED WORKS AT RUPA POWER HOUSE AND SPECIAL REPAIRS/REPLACEMENT OF 11 KV LINE CONDUCTOR AND ALLIED WORK AT DAHUNG AREA UNDER GE 859 EWS

Amount

Disconnecting, Servicing and overhauling of 11KV vacuum circuit breaker of 630 Amp capacity including following repair/testings and ensuring smooth functioning of VCB all as directed by Engr-in -charge. Note : Parts to be replaced will be measured and paid separately as "Supply only" against appropriate item(s) of this schedule. However labour cost towards replacement shall be deemed to be included in this item. (a) Checking of HT 11 KV VCB tripping circuit, over current plus earth fault relay, master tripping relay, breaker control remote switch and tripping mechanism, Calibration of IDMT Relays and CTs cap 100 Amps (set of three) through primary and secondary injection method by using relay test kit and other required measuring equipment including resetting the trip values at the numerical relays and auxillary trip relays and ensuring for healthy triping mechanism at the site of 11KV HT VCB Panel and submitting test report. (b) Checking of isolating mechanism and Cleaning of all contacts by petroleum jelly for removing deposited carbon including greasing etc. (c) Checking metering panel for internal wiring, ammeter, volmeter and RYB indicator. (d) Checking of potential transformer by conducting ratio test/meggering for IR Values provided in VCBs 11 KV, including checking of control wiring meters and calibration for the same.

Supply only the following spares of crompton greaves make vacuum circuit breaker (for replacement against item in-before) :- (a) Resin cast current transformer of ratio 50/25/5A-5A dual ratio one for metering of class 1 and other for protection of 5P class suitable for 12KV voltage and rear fixing type. Make :- CG

(b) Big pinion assemble for mechanism

(c) Small pinion assemble for mechanism

(d) Closing coil 110 Volt DC

(e) Tripping coil 110 Volt DC

(f) 110V DC LED lamp

(g) Monoplast tape

(h) Spouch Insulation of incoming and outgoing

(j) Spring charged motor as per the specification. (Type-PMRS, Supply Volt- 230 DC, 150 watt, NLRPM - 10, class- B, Make- M/s DELCO).

(k) Vacuum interrupter 630 Amp, Make- CG

(l) Mono block diode 25A

(m) Trolley iron wheel

(n) Auxilliary Switch suitable for 11 KV VCB, cap 630 Amps.

(o) HRC fuse of rating 2 Amps.

(q) HT digital display ammeter suitable for CT rating 30/5 & 60/5 amps. Make : CONZERN, Model No. DM 3252

(r) HT digital display voltmeter suitable for HT VCB panel 1100/100 volts (auxillary volts). Make : CONZERN, Model No. DM 3251

(s) Breaker control switch code No: Customer Specific

(t) HT digital display ammeter suitable for CT primary current 100 Amps. Make : ALPHA

(u) HT digital display voltmeter suitable for HT VCB panel 11 KV. Make : ALPHA.

(v) Multifunction meter digital display type. Make :- Schneider.

(w) Space Heater 20A, 250V AC only, Make:-Vileco.

Excavation in trenches not exc. 1.5M wide and n.exc. 1.5M in depth in soft/loose soil including black cotton soil and getting out all as specified and directed.

Returning filling in including spreading, watering and well ramming in layers n.exc. 25 cm thick after the cable are laid.

Removal of surplus soil to a distance n. exc. 50 Mtrs and depositing where directed at a lavel n.exc. 1.5 Mtr above the starting point.

Supply and spreading clean dry river sand in trenches around the cable for cushioning all as specified.

Supply and laying in replacement un reinforced precast concrete cable cover, class LV, type 1 flat size 450mmx180mmx40mm complete as in cable protection covering.

M & L for Chemical earthing complete with copper earth plate 900x600x5.0mm and copper earth copper earth strip 32mmx6mm, thick burried directly in ground (earth pit not less than 5.0mtr deep and 1.5mtr wide below normal ground level and complete size of pit 1.6M X1.6 M X 5.0M earth plate connected to copper strip of size 50 x 6 mm by brazing only earth strip protected with light grade GI pipe 80mm dia bore from copper earth plate electrode and upto and including the earth test point made of gunmetal Phosporous bronze of size 75x75x25 mm including 25mm bore water pipe medium grade GI tubing including GI Funnel , wire mesh, alternate 5 layers of charcoal (250 Kg) & salt crystal (200 Kg) and top two inches layers with Magnesium sulphate (100 Kg) including excavation in strata, refilling with black cotton soil above the Magnesium Sulphate and removal of the excavate soilland depositing at the place where directed, (PCC pit in PCC (1:3:6) type C1 using 20mm graded stone aggregate , RCC (m) cover 40mm thick in RCC (1:2:4) type B1 using 20 mm grade aggregate reinforced with 8mm dia TMT bars @ 7.5 mm c/c both ways including MS angle iron frame of 40x40x3mm etc watering the earth pit to achieve earth resistance below 01 ohm including

Earth continuity conductor or main earthing lead/wire 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 32x6 mm copper strip including PVC black colour sleeves covering.

M & L for earthing in replacement complete with galvanised steel earth plate electrode 60x60x6.3 mm thick burried directly in ground (earth pit not less than 2.25 mtr deep below ground level) with top edge of the plate not less than 1.5 mtr below normal ground level, connected to GI strip 32x6 mm dia as earthing lead by means of bolts, nuts, check nuts and washers of GI or steel all as shown in electrical plate No 3 of SSR Part - I 2009 connected to earthing test point/transformer/pannel all as specified or indicated and testing on completion as directed by Engr-in Charge including necessary excavation and earth work in any type of soil, funnel PCC chamber (1:2:4) type CI , PCC pit cover, charcol, salt including provision of earth lead protected by 40mm dia light grade GI pipe and 20mm dia medium grade GI pipe for watering complete.

Supply, laying in trenches or laid under gloors etc and testing XLPE insulated, screened PVC bedded, galvanised step strip armourdm heavy duty HT power cables ISI marked with aluminium conductor, 11000 volts grade corss sectional area 95 sqmm 3 core, 11 KV earthed including taking down old US cable complete all as specified

Supply, laying in trenches or laid under gloors etc and testing XLPE insulated, screened PVC bedded, galvanised step strip armourdm heavy duty HT power cables ISI marked with aluminium conductor, 33000 volts grade corss sectional area 95 sqmm 3 core, 33 KV earthed including taking down old US cable complete all as specified

S/F outdoor cable and terminals ( heat shrinkcable joint) with joint kits complete for XLPE insulated, screened, PVC bedded galvanised steel strip or wire armoured, electric power cables (heavy duty) with aluminium conductor, 11000 volts grade cross sec of 95 Sqmm

S/F indoor cable and terminals ( heat shrinkcable joint) with joint kits complete for XLPE insulated, screened, PVC bedded galvanised steel strip or wire armoured, electric power cables (heavy duty) with aluminium conductor, 11000 volts grade cross sec of 95 Sqmm

Supply and fix outdoor cable end terminals (heat shrinkcable joint) with joint kits complete for XLPE insulatedm screened, PVC bedded, galvanised steel strip or wire armoured, electric power cables (heavy duty) with aluminium conductor, 33000 volts grade cross sec of 95 sqmm

Supply and fix switch Air break gang operated, triple pole, mechanically operated, mounted on insulator and steel frame with operating mechanism worked from ground level for current rating upto 200 Amps, 11000 volts grade complete including expulsion fuse, single pole, 11000 volts up to 25 amps complete all as specified and directed (Jayshree/ Pactil/Joypuria)

Supply, installation, commissioning and testing of Lightning arresters outdoor use, non linear, 12 KV grade, metal oxide (ZnO) type, station class-III for 10 KA rupturing capacity ISI marked (IS 3070) including taking down existing unserviceable Las, complete all as specified and directed, including taking down old US item

Dismentling of cross-arms of MS channel or angle sections etc complete

Dismentling insulators any type, any size

Dismentling of ACSR conductor of any size

Dismentling of Earth wire or copper conductor, service feeder or distributor span.

Dismantling air break gang operated switches vertical/horizontal mounted including insulators and operating mechanism for repair/replacement of broken/worn out components and insulators etc

Dismentling of LA of any size

Taking out existing GI pipe of any size

Dismentling of Elect poles/struts, any size

Material and labour for steel tubular swaged pole 11.00 mtr long (type 410 SP-55) conforming to IS 2713 complete with bracket, cast iron base plate, finial taper plug, bolts nuts and screws with two coats of synthetic enamel paint (white) over a coat of red oxide primer complete all as specified and directed

Excavation in trenches in any type of soil not exceeding 1.5 mtr wide and not exceeding 1.5 meter depth for laying GI tubing/UG cable etc complete all as specified and as directed

Excavation in trenches not exceeding 1.5m wide and not exceeding 3.0m deep for foundation of poles stays and struts etcm and getting out in hard/dense soil complete all as specified and directed.

PCC 1:4:8 type D-2 (using 40mm graded hard granite stone aggregate) in foundations for pole or in filing as directed by Engineer-in-charge.

M & L PCC 1:3:6 type C-1 using 20mm graded store aggregate as in stay foundation/coping to poles, filling and mass concrete including necessary form work and taking out existing coping complete all as specified and directed.

M&L cross arms bracings, supports, clamps & back plate fabricated from structural steel sections including nuts bolts washers, welding bending cold or hot, driling holes for bolts, in any shape or size as indicated or directed and inclusive of one primer coat, one under coat and finishing coat of paint.

S & F pin type porcelain, vitreous, white, brown and green insulator including one galvanised mild steel spindle, two galavanised iron washers and one galavanised iron nut, 150mm height, 150mm dia for 11000 volts grade.

S & F Disc type insulator, porcelain, viterous 145mm high and 255mm dia ball and socket type white, brown or green 'Two-in-series' assembly for tension with tension clamps for conductors working pressure 11000 volts.

M & L Galvanised steel wire fixed on poles without kinks and bends of size 3.15 or 4mm dia.

Supply and install HT 11 Kv outdoor gang operated air break switch suitable for horizontal or vertical mounting with drop out fuse having 12 insulators of rating upto 200 Amps Make Jaipuria/alston/Pactil.

Supply and fix lightning arresters high tension expulsion type complete with all fitings, transmission class, suitable 11kv discharge capacity 65 kilo amp.

Supply and fixing danger notice board of 1.6mm thick mild steel sheet, vitreous enamelled white, with letters, figure and conventional skull and bones in signal red colour and fixed with MS clamps, bolts and nuts of approved size of HT, 25x20cm.

GI tubing light grade 80mm dia galavanised with all fittings laid in trenches as protection of cable.

M & L anti climbing device spikes type fabricated out of MS bars (round, square and flat) including nuts, bots, washers and welding in two halves made to shape to suit the cross section of the pole.

M & L ACSR conductor fixed on poles without kinds and bends

M & L for painting of steel surface of HT steel tubular pole 11 mtr incl accessories like cross arms and clamps etc and painted with one coat of red oxide primer and two coats of aluminium paint over the prepared surface incl numbering of poles approved size with black colour or as approved by Engr-in-charge

M/S KUMAR CONSTRUCTION