SPECIAL REPAIR FOR REPAIR REPLACEMENT OF HT VCB AND MISC EM WORK AT BINNAGURI MIL STN UNDER GE NORTH BINNAGURI

Amount

Schedule 'A'

Excavation in trenches in soft/loose soil not exc. 1.5 metre wide and not exc. 1.5 metre in depth and getting out for taking up / laying under ground electric cable complete all as specified and as directed.

Returning, filling in, including spreading leveling watering and well rammming in layers not exceeding 25 cms in depth complete all as specified and as directed.

Removing surplus soil to a distance not exceeding 50 mtr and depositing where directed at a level not exc 1.5 mtr above the starting point complete all as specified and as directed.

Supply and lay dry river sand filling for under ground cable protection with a layer of 8cm deep before laying and 15cm covering above the top edge of cable after laying complete all as specified and as directed.

Supply and laying bricks of size 250x125x75mm for protection of LT UG cable. Complete all as specified & directed.

M&L 80 mm bore steel tubing light grade ISI marked for protection of cable laid in horizontal bore including necessary joints complete all as specified and as directed.

Taking down unserviceable trolley mounted VCB from panel including accessories complete all as specified and as directed.

Supply ,testing, installation and commissioning of VCB trolley 12 KV, 3 Phase 50 HZ, 630 Amp rapture capacity upto 350 MVA in existing panel including VI, VI support rod, support insulator and complete wiring of existing panel and wiring of existing relay all as specified & directed. Note : (i) All addtitional/alteration required for retrofitting of VCB trolley in existing HT panel will be included in rate. (ii) Before placing of order of trolley contractor is required to verify make & model of HT Existing panel.

Material & labour for replacement of electromechanical IDMT relay with Digital Numeric type IDMTL Relay with short ckt. Over current and earth fault protection relay with fault recording Facility including replacement of existing thermal magnetic relay with adopter plate and setting of the Relay as per connected load including rewiring circuit complete all as required for function of relay with suitable of copper conductor wire etc. complete. Relay make ABB model REJ 601 .

Taking down of shut down from state electricity board ,Disconnecting of all electrical connection of 66 KV and taking down of unsv PT from HT Pillars with chain pully arrangements in 66 KV Yard supply and fixing with new PT 66 KV /110 V fixed type single phase single pole earthed PTs Burden & Class 110VA/0.5, 50 HZ, insulation leve140/325KV complete all as specified and as directed.

Taking down of shut down from state electricity board ,Disconnecting of all electrical connection of 66 KV and taking down of unsv CT from HT Pillars with chain pully arrangements in 66 KV Yard supply and fixing with new CT 66 KV fixed type of ratio 100/01, 50 HZ, complete all as specified and as directed.

Disconnecting of all electrical connection of 66 KV and taking down of unsv lightening arrestor from HT Pillars with chain pully arrangements in 66 KV Yard supply and fixing with new lightening arrestor for 66 KV fixed type 50 HZ, complete all as specified and as directed.

Disconnecting and taking down HT UG cable from VCB and cutting faulty end portion of the cable, dressing properly and making good end termination, in door type with and including supply and fixing suitable size of cold shrinkable new jointing kit 11000 voltage grade and aluminium lugs duly crimped with crimping tool for the cable size of HT 95 sqmm XLPE cable complete all as specified and as directed.

Disconnecting and taking down HT UG cable from VCB and cutting faulty end portion of the cable, dressing properly and making good end termination, in door type with and including supply and fixing suitable size of cold shrinkable new jointing kit 11000 voltage grade and aluminium lugs duly crimped with crimping tool for the cable size of HT 185 sqmm XLPE cable complete all as specified and as directed.

Supply, laying, connecting and testing XLPE HT UG insulated (Earthed) cable laid in trenches/or fixed on pole etc. with screened PVC bedded galvanized steel strip or wire armoured electric power cable (heavy duty) with stranded aluminium conductor, 11000 Volt grade, cross sectional area 185 Sqmm, 3 Core conforming to IS-7098 (Part-II)-1988 complete all as specified and directed. Notes: (i) Excavation & earth work will be measured and paid separately. (NOTE: Earthwork & Excavation, GI pipe, bricks for protection etc shall be measured and paid separately under relevant items of this schedule 'A'). NOTE : Specification of cable shall be as under:- (a) Inner sheathing shall be of extruded PVC. (b) Cable shall also be supplied with sequences hall marking at every metre on the luner sheathing. (c) Ultra violet radiation resistance compounded comprising to ASRM-2863 flame netarded as per EIV specification. (d) Anti rodent and antitermite compound added. (e) PVC compounds of various grades as IS-5831. (f) Compaction conductors shall be shaped and arrangement to the same will be on the cable.

Supply and installation (above ground) including testing HT joint box 2 way outdoor type of size 1500 x 1000 x 900 mm (overall) made out of 3.15 mm thick CRCA sheet with support of angle iron frame of size 40 x 40 x 6 mm with KIOSK BOX and comprising of 03 Nos HT porcelain bushing and copper round bus bar 12 mm dia rigidly mounted on bakelite sheet 12 mm thick to support insulators of suitable size and shape including providing necessary electric connection and applied two coats of synthetic enamel paint over a coat of red oxide primer to steel surfaces (internally & externally) including PCC foundation base of size 1700 mm x 400 mm x 1400 mm height (700 mm above GL & 500 mm below GL) with PCC 1:3:6 type C1 using 20 mm graded aggregate complete including necessary excavation and earth work for foundation and necessary electric connection complete and including dismantling of unserviceable joint box complete all as specified and as directed.

Material and labour for Earthing complete with copper plate electrodes of size 600x600x3.15mm thick burried directly in ground with earth pit not less than 2.25 meter deep below normal ground level with top edge of plate not less than 1.5 meter below normal ground level connected to copper 20x3 mm earth strip by means of nuts bolts check nuts GI washers earth strip protected by iron pipe 40 mm bore (light grade) with and including concrete pit in PCC (1:3:6) type CI, precast RCC cover slab of size 55x55x15 cm with one handle for lifting made out of 8 mm diameter MS bar finnel wire mesh 20 mm bore galvanised iron pipe (medium grade) for watering charcoal or coke and salt in alternate layers necessary earth work in soft/loose soil complete all as shown in electrical plate No 3 of SSR Part I complete all as specified and directed.

PURBANCHAL BUILDERS

M/s Debendra Prasad Gupta

M/s Om Prakash Agarwala