CWE KOTA/KOTA-17 OF 2020-21 REPAIR/ MAINTENANCE OF HT EXTERNAL ELECTRIFICATION IN NORTHERN AND CENTRAL SECTOR AT MIL STN KOTA

Amount

Dismantling and taking down ACSR Conductors of any size from poles complete all as specified and directed.

Taking down earth continuity conductor 4mm dia complete all as specified and directed.

Distmantling and taking down old insulator any type any size, any make from cross arms/poles etc,complete all as specified and directed.

Distmantling and taking down old cross arms, bracing support clamps and back plates from poles etc, complete all as specified and directed.

Excavation in trenches in soft / loose soil, not exc 1.5 m wide and n. exc 1.5 m depth or n exc 10 Sqm on plan & getting out, for laying of cables, foundations of poles, struts, stays etc. and getting out including triming and forming bottom surface complete all as specified and directed.

Returning, filling in, including spreading, levelling, watering and well ramming in layers not exceeding 25 cms thick in soft / loose soil back in trenches after cables have been laid and tested, poles, stays , struts have been erected and testedcomplete all as specified and directed.

Removing excavated materials to a distance not exc 50m and depositing where directed at a level not exc 1.5 m above the starting point in soils complete all as specified and directed.

M & L for sand filling with clean dry fine sand unwashed including gently punning around cables in trenches for cable protection complete all as specified and directed. Note :- For the purpose of payment only punned thickness shall be measured.

S & F Ammeter digital type 100A/ 5A or 60A/5A CTR of 150mm x 150mm including taking out of old unserviceable ammeter, complete all as specified and directed.

Supplying, Fixing/laying, jointing and testing and commissioning in repair 3 core 95 Sqmm under ground cables, 11 KV grade, XLPE insulated, armoured heavy duty electric cable with stranded aluminuim conductors, laid in trenches, ducts/fixed on poles/walls/laid under roads/paths/drains/culverts or encased in GI pipe complete all as specified and directed. (Note :- Excavation & earth work, GI pipe for laying of cable, sand cushioning, cable protection cover shall be measured and paid for seprately under respective items of the schedule.)

S & F indicator light (LED Type) suitable to operate on 30 Volts DC/110 V AC having two covers red/green/blue for HT VCB panel including taking down old one complete all as specified and directed.

S & F power factor meter digital type of 146mmx146mm including taking out of old unserviceable PF meter, complete all as specified and directed.

S & F Volt meter digital type 15 KV of 110 V PTR, size 150mm x 150mm including taking out old unserviceable voltmeter complete all as specified and directed.

Supply and fixing in replacement HT cable route indicator cast iron of suitable size along HT cable trench including planting in ground with PCC complete all as specified and directed.

S & F 100mm bore GI Pipe light grade under road crossing or on poles for protection of cables, complete all as specified and directed.

M & L for cable jointing kit for 11 KV (Earthed) grade cable for indoor termination heat shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 95 sqmm including dismantling existing unserviceable joint complete all as specified and directed.

M & L for cable jointing kit for 11 KV (Earthed) grade cable for outdoor termination heat shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 95 sqmm including dismantling existing unserviceable joint complete all as specified and directed.

"Supplying, jointing and testing heat shrinkable type straight thourgh jointing kit, suitable for 11KV under ground earthed system 3 core XLPE armoured aluminuim conductor cable of size 95 Sqmm , complete, all as specified and directed.

M & L in repair for lightening arrestor expulsion type complete with all fiting treansmission class discharge capacity 65 KA complete all as specified and directed.

M & L in repair for chequered plate of cahnnel square cat or notched of thickenss 6mm to 12mm (ordinary or counter shunk) forming holes without any attachment complete all as specified and directed.

Supply and laying factory made ISI marked un-reinforced precast concrete cable cover class HV type I flat of size 300mm x 180mm x 40mm complete all as specified and directed.

Supply and fixing MS structural steel work in cross arms, bracings, supports, clamps and back plates fabricated (with drilled holes hot and cold etc) from channel/angle iron sections of various size and shape FI clamps (full, half 'D' and earth clamp etc) including necessary MS bolts, nuts, washer etc and painting with two coats of aluminium paint over one coat of red oxide primer complete all as directed.

S & F Push Buttons ON/OFF suitable for 11 KV panel existing size and including removing old unserviceable (Colour-Red/Green/Black), complete all as specified and directed.

M&L for HT Pin type porcelain,vitreous, white, brown or green insulator 150mm height, 150mm dia suitable for 11000 volts grade (ISI marked) including one galvanised mild steel spindle, two galvanised iron washers and one galvanised iron nut complete, all as directed.

M & L for disc type insulator, porcelain, vitreous 145mm high and 255 mm dia ball and socket type, white brown or green ' Two in series' assembly for tension with tension clamps for conductors, working pressure 11000 Volts complete all as specified and directed.

S & F for loop type insulator with complete fitting porcelain, vetrous white or brown large size with over all dimension 90x140mm and clearance of hole 25.5mm, complete all as specified and directed.

Supply & fix aluminium conductor steel reinforced (ACSR) any size straining properly on insulator, maintaining desired sag and binding with aluminium tap/binding wire with connectors, making jumpers etc, complete all as directed. (Note : Each run of conductor shall be measured and paid.)

Supply installing, testing and commissioning in repair of Air- break, gang operated, triple pole switch, outdoor, vertical mounting type (ISI marked), mechanically operated, mounted on polymer insulators 15 Nos including 11 KV 200 Amp rating complete with (DO Fuse unit) fuse mounts, fuse carriers and HT fuse elements and frame work with operating mechanism worked from ground level, with locking arrangements including Godrej pattern 65mm pad locks with two keys, complete suitable for HT 11 KV, 50 Hz AC supply including necessary electric connection, complete all as specified and directed.

S & F battery charger suitable for charging to battery bank 2 volts 100 AH (15 Nos) including digital type volt meter, Amp Meter etc. complete all as specified and directed.

Supply, fixing and testing in repairs power pack units with maintenance free solid batteries in sheet metal enclosure with arrangements for mounting on the existing 11 KV VCBs panels with nuts and bolts and capable of providing 30 V DC current to the VCBs during power failure for continuous period of not less than 12 hours, for functioning of relays, charging motor and other parameters complete all as specified and directed.

Supply and fixing, in repairs batter bank of capacity 24 volt consisting of (02 Nos each of 12 V maintenance free battery of 120 AH capacity make Exide/Amron) with replacement of battery bank of capacity 24 V, consisting of (12 nos) of 02 volts each 120 AH maintenance free "Exide" make for system voltage 24 V, including disconnection of old unserviceable battery bank complete all as specified and directed.

M & L in replacement old unserviceable HT jumper from HT 2 or 4 pole structures/sub stations with ACSR conductor of type (weasel) including PVC heat shrink sleeves (RYB). Each jumper should not be less than 2 to 3 mtr in length including provision of vice type connector/aluminium lugs of suitable size to terminate the jumper at both ends with provision of nuts, bolts, washer etc complete all as directed

M & L for servicing/calibration to 11 KV HT VCB including taking out 11 KV HT VCB of 400/800 Amps rating trolley from HT Panel after switching off electric supply, checking of mechanical system for proper functioning of upward/downward movement of HT VCB trolley including opening the VCB & checking the mechanical system cleaning & servicing the fixed/ moving contact & blowing out dust and applying the proper lubrication/ greasing and reassembling the VCB including connection to HT panel and insulating oil to be replaced where required, complete all as specified and directed.

M & L for opening the existing ACB, 4 pole 630/800 Amp, 50 Hz with breaking capacity 50KA, disconnecting the cable connection of any size and servicing the fixed/ moving contact & blowing out dust and applying the proper lubrication/ greasing for repair and replacement of defective components of ACB, lamp indicators, caliberation of relays & digital meters, over load protection relay, time delay relay/ earth fault relay, charging spring etc. Cleaning the fixed and moving contact inside the ACB properly, servicing and greasing all moveable machanism replacement of defective fuses, wiring and reassembling and testing complete all as specified and directed. Note :- (a) The rates quoted by the contract shall include cost of any other spare parts not mentioned herein but essentially required for functioning of the system. (b) Testing of above job to be carried out by engineers of authorised dealer/ services centre of concerned OBC. (c) No extra payments will be made to the contractor for the same. (d) Unit rates quoted by tenderes shall deem to include for, bolts, washers, lugs, thimble, wires and petty items required for efficient and smooth functioning of the equipment without any extra cost to the Govt.

M & L opening the existing RMUs of 11 KV rating, disconnecting the HT cables of any size and servicing the fixed/ moving contact & blowing out dust and applying the proper lubrication/ greasing and replacement of defective components of RMU , Lamp indicators, caliberation of relays & digital meters, over load protection relay, time delay relay/ earth fault relay, charging spring etc. Cleaning the fixed and moving contact inside the RMUs properly, servicing and greasing all moveable machanism, replacement of defective fuses, wiring and reassembling and testing, complete all as specified and directed. Note :- (a) The contractor shall arrange for the standby supply for testing of relays. (b) the rates quoted by the contractor shall include cost of any other spare parts not mentioned herein but essentially required for functioning of the system. (c) Testing of above job to be carried out by Engineers of authorised dealer/ services shall deem to include for, bolts, washers, lugs, thimble, wires and petty items required for efficient and smooth functioning of the equipment without ant extra cost to the Govt.

M&L for galvanised iron 4mm steel wire as in earth continuity conductor or main earthing lead 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, complete all as directed.

M & L in repair earthing complete with galvanized steel earth plate 60 cm X 60 cm X 6 mm thick buried vertically in ground to depth not less than 2.25 metres deep below ground level, with top edge of earth plate not less than 1.5 m below ground level, connected to galvanised iron strip 32x6mm earth lead by means of bolts, nuts, check nuts and washers of galvanized iron or steel besides welding at all joints including excavation and earth work, GI pipe light grade 40mm bore for protection of strip and connected to continous earth lead on pole/test point, supplying and laying charcoal dust common salt PCC 1:2:4 type B1, chamber and MS angle iron frame 40x40x3mm and RCC cover 40mm thick (1:2:4) type B1 using 20mm graded stone aggregate reinforced with 6mm dia round bars @ 75mm C/C both ways with MS handle 12mm dia, PGI funnel and wire mesh, 20mm dia GI pipe medium grade for watering all as shown in electrical plate No 3 on srl page No 497 of SSR Part I (2009) drawing and connection to earth test point including testing complete all as specified and directed, . Notes :- (i) Outer edge of earth pit shall be 1 metre away from the outer edge of PCC chamber. (ii) The cost of earth lead /strip and GI pipe for protection of earth lead/strip upto 7.5m is included in the quoted rate. (iii) The cost of excavation, earth work is included in the quoted rate.

K B Enterprises

Pioneer Enterprises