CA NO. CWE/CHD-78/2022-23 SPECIAL REPAIR FOR REPLACEMENT OF 11 KV VCBs AND CONNECTED ITEMS AT N AREA UNDER GE CHANDIGARH

Amount

Taking down Existing unserviceable VCB/RMU of any capacity / make and setting aside complete all as specified and directed. Note:- Old VCB including connected items shall be hand over to MES store yard .

Supply and laying cable XLPE insulated screened PVC bedded, galvanized steel strip or wire armoured, electric power cables ( heavy duty ) 11000 volts grade with stranded aluminium conductor of size 120 Sqmm 3 core ( Main Cable) including removal of existing cable from trenches/ wall/ floor etc. complete all as specified and directred

Supply and laying cable XLPE insulated screened PVC bedded, galvanized steel strip or wire armoured, electric power cables ( heavy duty ) 11000 volts grade with stranded aluminium conductor of size 95 Sqmm 3 core including removal of existing cable from trenches/ wall/ floor etc. complete all as specified and directred

Material & labour for cable route indicator made of cast iron plate circular type 10 cm dia duly marked Blue colour marked LT cabless arrows mark up side duly welded/nut, bolt with angle iron 45x45mm equal size and 45 cm long duly grouted on ground with PCC (1:3:6) as in foundation & earth work excavation etc complete all as specified and directred.

Material & labour for Cross arms, bracings, supports, clamps and back plates fabricated from structural steel sections including nuts, bolts, washers, welding bending cold or hot, drilling holes for bolts, in any shape or size as indicated or directed and inclusive of one primer coat, one under coat and one finishing coat of synthetic enamel paint complete all as specified and directed.

Material and Labour for Air break switch gang operated triple pole, machanically operated, mounted on insulator and steel framewith operating mechanisim worked from ground level, current rating upto 200 amps for 11 KV complete with locking arrangement etc including provision of 3 Nos deep out expulsion two coats of aluminium paint over a coat of red oxide primer on MS work complete all as specified and directed.

Material & labour for Lightening arresters expulsion type complete with all fittings, transmission class, discharge capacity 65 KA on 11000 volts complete all as specified and directed by Engineer-in-Charge.

Material and Labour for Anti-climbing device; spikes type fabricated out of M.S. bars (round, square and flat) including nuts,bolts, washers and welding in two halves made to shape to suit the cross section of the pole including provision of two coats of synthetic enamel paint over and including a coat of red oxide primer complete all as specified and directed.

Excavation in trenches in soft/loose soil not exceeding 1.50 meter wide and not exceeding 1.5 meter in depth and not exceeding 10sqmm on plan and getting out ccomplete all as specified and directed

Returning,filling in including spreding, levelling, watering and well ramming in layers not exceeding 25 cm thick each excavated soil in trenches after the pipes have been laid and tested completed as in soft/loose soil, complete all as specified and directed

Removing of surplus soil/excavated material to a distance not exceeding 50meter and depositing where directed at a level not exceeding 1.5m above the starting point complete all as specified and directed

Material & labour for Plain cement concrete 1:3:6 type C-2 using 40mm graded stone aggregate as in foundations of PCC poles/struts, stay asembley, filling and mass concrete etc. including necessary fromwork complete all as specified and direted by Engineer-in-Charge.

Material & labour for Plain cement concrete 1:2:4 type B-1 using 20mm graded stone aggregate for coping around Poles,including necessary form work finishing even and smooth without using extra cement complete all as specified and directed.

Material and Labour for Sand filling in trenches/ ducts for bedding and caushioning to cable spreading and levelling in foundations, 8 cm in depth before laying the cable and 15 cm in depth after laying the cable including watering and consolidation complete all as specified and directed. NOTES : (i) Consolidated/ punned sand shall be considered for purpose of payment. (ii) Sand shall be same as specified for plastering work.

Supply and laying factory made unreinforced precast concrete cable cover, class HV, type 1 flat size 300mm x 180mm x 40mm for protection of HT cable laid flat length wise prependicular to the axis of cable complete all as specified and directed by Engineer-in-Charge.

Supply, jointing, testing and commissioning cable end termination jointing kit 11 KV (earthed) grade cable for outdoor termination cold shrinkable type joint complete with jointing material and accessories suitable for 3 core XLPE armoured alluminium conductor cbale of size 120 Sqmmm complete all as specified and directed by Engineer-in-Charge.

Supply, jointing, testing and commissioning cable end termination jointing kit 11 KV (earthed) grade cable for outdoor termination cold shrinkable type joint complete with jointing material and accessories suitable for 3 core XLPE armoured alluminium conductor cbale of size 95 Sqmmm complete all as specified and directed by Engineer-in-Charge.

Material & labour for steel water tubing, galvanised, light grade, ISI marked, 80 mm bore with and including all fittings fixed to walls and ceilings or laid in floors complete all as specified and directed by Engineer-in-Charge.

Material and Labour for Danger notice plate of 1.6mm thick mild steel sheet, vitreous enamelled white, with letters, figures and conventional skull and bones in signal red colour and fixed with M.S. clamps, made out of MS flat 25 x 3 mm bolts and nuts of approved size, for HT, 25x20 cm size complete all as specified and directed.

Material & labour for Galvanised iron strip 32x6mm burried in ground with saddles and fixing screw etc.for roof conductors and down conductor above ground for earthing complete all as specified and directed

Material & labour for earthing complete with galvanized steel earth plate electrode 600x600x6mm surrounded by mixture of charcoal and salt in alternate layers burried directly in ground vertically in a pit of depth not less 2.25mtr below ground level with top edge of earth plate at a depth of not less than 1.50mtrs below ground level connected with and including 32x6mm galvanized iron strip as earthing lead by means of bolts, nuts, check nuts and washers made out of galvanized iron, 20mm dia medium grade GI pipes for watering with funnel, wire mesh and 40mm GI light grade protection pipe for GI strip and including necessary excavation, earth work, PCC 1:3:6 type C-2 concrete pit and RCC pit cover charcoal and common salt filling in alternate layers complete all as specified and directed by Engineer-in-Charge on electrical plate no-3 of SSR Par-I of 2009. Note:(i) If desirable earthing result not found re done earthing without any extra charge until get required earth resistance. (ii) The result sheet of earthing may submit to sub division level by contractor.

Supplying, installation, Testing & Commissioning of indoor type panels shall be construted from CRCA/Aliminium Zinc coated steel sheet of mimiunm 2 mm thickness, floor mounted metal enclosed, 11 KV VCB Panel, totally enclosed and fully interlocked, horizontal draw out, horizontal isolation type breaker as per IS 13118, as amended up to dated and additional specifications, having capacities as mentioned below, single break, trip free mechanism, manually /automated charged and manually /automated closing breaker suitable for use on 11 KV, 3 phase, 50 Hz A.C supply with short ciruit fault level of minimum 26.3 KA, Panel shall be fully internal are tested i.e. in all three chambers at minimum 26.3KA for 1 sec for safety purpose (AFLR) for safety from vermin, dust etc. Offered Panel compete with self contained, fully interlocked, rack in and rack out mechanism , air insulated copper bus bars of 800 amps capacity, Bus bar should be coverd with HT fully voltage sleeve (Heat shinkable PVC sleeve not accepted ). Breaker featured with mechanical ON/OFF indicator with hand trip coil, integral spring charging handle and auxiliary switch of 4 NO + 4 NC and equipped with following switchgears and accessories. i/c connections suitable upto 3 x 300 sq . mm XLPE 11 KV Cable (Cable entry from top) end termination with heat shrinkable jointing meterial etc as reqd (Note ;- Cost of end termination not included in this item) Only panel fabricated by OEM shall be accepted

Panel Shall be Comprising of:- (I) Incoming Panel 01 Nos each shall be comprising of :- (a) Matal Clad housing with track having 800 A TP intergral VCB with Electric operated draw out type mechanism (b)One Set of air insulated copper bus bar & Chamber ( C ) One Set of isolating plug and receptacle (d) One Set of Automatic safety shutter. (e) One Sets of CTs (each set comprising of : 3 Nos each of dual core dual ration 3 CTs 200/100/5/5A of 15 VA burded (f) Digital Multifunction Meter modbus communication (g) One Sets of PTs 11 KV / Rt. 3 /110V /Rt 3 of (100 VA) cast resin type. PT & fuse should be compleely enclosed by epoxy and floor rolled type to be placed at the rear of the panel .(PT on the top of the panel is not accepted) (h) 01 No Tripping coil & closing Coil 110 V DC (i) One Set of ON /OFF/Trip & circuit healthy and phase indicating lights. (j) 03 Nos Element O/C , EF & SC relay (IDMTL & HI - Set ) With required setting (k) One Set Auxiliary relay (Numerical type) (l) Master trip relay (Numerical type) (m) One set trip circuit supervision

II Outgoing Panel 4 Nos. each shall be comprising of :- (a) Metal Clad housing with track having 800A TP integral VCB with electric operated draw out type mechanism (spring charged motor -230 VAC ) (b) One set of air insolated copper bus bar & chamber ( c ) One set of isolated plug and receptacle (d) One Set of Automatic safety shutter (e) One set of braker control switch (TNC ) (f) Sets of CTs (each set comprising of : 3 Nos each of dual core dual ration 3 CTs 100/50/5/5 A of 15 VA burded and accuracy Class-1 for metering and class 5P10 for protection ). (g) Digital Multifunction Meter with Modbus Communication (h) 01 No Tripping coil & Closed Coil 110V DC (i) Set of ON /OFF/Trip & circuit healty and phase indicating lights (j) 03 Nos Element O/C , EF & SC relay (IDMTL & Hi -Set) with required setting (k) One set of Auxiliary relay (Numerical type) for bushhoiz, PRV, OTI,WTI protection and alarm etc (l) Master trip relay (Numerical type) (m) One set Trip circuit supervision (o) 01 No Power panel pack

NOTES :- (a) Drawing for panel shall be approved from GE before placement of order by contractor (b) CT ratio as given is tentative and is subject to final approval of GE (c) Precommissioning test of panel shall be carried out by EI from HQ CECZ within oveall cost quoted by contractor (d) Any modification required to match the system with existing system is deemed to be included in overall cost quoted by contractor. (e) Pre dispatch inspection of panels can be carried out at factory premise by rep of Accepting Officer within overall cost quoted by contractor. Decision of Accepting Officer shall be final in this regards. (f) Power pack duly fitted by firm supplying VCBs should be supplied within overall cost quoted. (g) Necessary foundation bolts to be grouted in PCC foundation as recommended by the manufacturer shall deemend to be included in overall quoted rates. (h) Panels should be suitable for minimum impulse withstand voltage of 95 KV. Nothing extra shall be payable on this account. (j) MS base channel 100mm chromium plated shall be provided for fixing of RMU on PCC foundation

LONGIA ENGINEERS

Electromech Engineers

Bharat Enterprises