REPAIR/ MAINT TO HT CABLES, VCBS, TRANSFORMERS AND PROTECTIVE GEARS AT AF STATION BAGDOGRA UNDER GE (AF) BAGDOGRA

Amount

Note 1: (Applicable for all parts/items) : The bidders/ contractors are advised to read tender document, all drawings & all corrigendum/amendments and general condition of contracts before entry/quoting the rates. Note 2:- Attention to bidder is hereby invited to upload revised BOQ if published during their bid submission. Uploading of incorrect/ pre-revised BOQ shall be treated as non bonafide and rejected. Fixed credit has been given in technical documents which shall be taken into account during acceptance of bid/tender.

Taking out VCB of any type make after disconnecting all electrical connection from common bus bar and removing nuts and bolts etc and dismantling the same for inspection, finding out minor defects and rectify the same complete with cleaning, servicing, over hauling, calibration etc and setting of relays for tripping accuracy all as specified and directed. Make : Crompton/Areva/Alstom/Schinder/ABB Note* Spare parts if required shall be measured and paid separately as Supply & Fixing under relevant items.

Supply & Fixing in repair spring charging motor and gear assembly suitable for 11 KV VCB complete all as specified and as directed. Make:- Alstrom / CG / ABB / Areva/Schinder

Calibration and setting of IDMT relay 11 KV of existing VCB over current auxillary, master relay as per site requirment complete all as specified and as directed.

Supply & Fixing in repair of IDMT relay (INVERSE) Type range 1 to 5 amps, Earth fault 1-4 amps suitable for 11KV VCB complete all as specified and as directed. Make CG / Alstrom / Areva/Schinder

Supply & Fixing in repair 24 /110 volt DC power pack/battery back up supply built with 100 AH battery with auto battery charger complete all as specified and as directed.

Supply & Fixing in repair closing coil assembly for 11 KV VCB complete all as specified and as directed. Make:- Alstrom / CG / ABB / Areva/Schinder (24V/110V DC)

Supply & Fixing in repair tripping coil assembly for 11 KV VCB complete all as specified and as directed. Make:- Alstrom / CG / ABB / Areva/Schinder (24V/110V DC)

Supply & Fixing in repair master relay electronic type suitable for 11 KV VCB as per site requirment complete all as specified and as directed. Make:- Alstrom / CG / ABB / Areva/Schinder

Supply & Fixing in repair epoxy resin cast, single phase current Transformer (CT) 11KV one set of three having ratio 100-50/5+5A (for both incoming & outgoing) having 15VA burden for metering and class 5P10 protection with air insulated CT chamber with complete wiring suitable for 11 KV VCB complete all as specified and as directed. Make:- Alstrom / CG / ABB / Areva/Schinder

Supply & Fixing in repair potential transformer, resin cast body indoor type of 11KV/110 V complete all as specified and directed.

Supply & Fixing in repair vaccum cylinder kit (vaccum Interrupter) complete suitable for 11 KV VCB complete all as specified and as directed. Make:- Alstrom / CG / ABB / Areva/Schinder

Supply & Fixing in repair LED indicators (color red/yellow/blue/white/green) complete all as specified and as directed. Make : Legrand/Seimens/C&S/HPL

Supply & Fixing in repair push button switch for trip circuit healthy complete all as specified and as directed.

Supply & Fixing in repair push button switch suitable for manually tripping of 11 KV VCB supply complete all as specified and as directed.

Supply & Fixing in repair Digital type ampere meter 100/200Amp for 11 KV VCB suitable for existing VCBs complete all as specified and as directed.

Supply & Fixing in repair Digital type volt meter for 11 KV VCB suitable for existing VCBs complete all as specified and as directed.

Supply & Fixing in repair digital multifunction meter 4" x 4" size suitable for panel board mounting, 11 KV Make : L&T Cat Part No WDM303FDWA1/ Conzerv DM 3251 or equivalent.

Supply & Fixing in repair CGI 14N/C (electronic relay) suitable for 11 KV VCB suitable for existing VCBs complete all as specified and as directed.

Supply & Fixing in repair worm wheel Big gear full teeth suitable for 11KV VCB complete all as specified and as directed.

Supply & Fixing in repair worm wheel small gear full teeth suitable for 11KV VCB complete all as specified and as directed.

Supply & Fixing in repair anti pumping device complete all as specified and as directed. Make:- Alstrom / CG / ABB / Areva/Schinder

Supply & Fixing in repair Isolation contract (400 Amps) close shaft complete for 11 KV VCB all specified and directed. Make:- Alstrom / CG / ABB / Areva/Schinder

Supply & Fixing in repair set of sleeves for epoxy mould (6Nos) complete all as specified and as directed. Make:- Alstrom / CG / ABB / Areva/Schinder

Supply & Fixing in repair set of 6 Nos epoxy Spout insulators with cc parts and shrouds 400/800 Amps suitable for 11 KV VCB Panel complete all as specified and directed. Make:- Alstrom / CG / ABB / Areva/Schinder

Supply & Fixing in repair bus bar stud support insulator 11 KV epoxy type suitable for VCB Panel complete all as specified and directed

Supply & Fixing in repair of butterfly type limit switch suitable for 250 MVA, 11 KV VCB complete all as specified and directed. Make:- Alstrom / CG / ABB / Areva/Schinder

Supply & Fixing in repair of Z type limit switch suitable for 250 MVA, 11 KV VCB complete all as specified and directed. Make:- Alstrom / CG / ABB / Areva/Schinder Note item No- 01 to 27 :- Tenderer shall be check the exsiting VCB's and shall be taken all the details of existing defective one before order the same. (a) New items shall be match with the existing system in any case. (b) Any minor adjustment for the fixing the item if required at site contractor shall be carried out at site without any extra cost.

Excavation in trenches not exceeding 1.5 m wide and not exceeding 1.5 m in depth for taking out pipe line etc for repairs / laying cables etc and getting out in soft / loose soil complete all as specified and as directed.

All as per item No 1.028 above but in hard soil or bituminous road / hard standing.

Returning, filling in, including spreading, levelling, watering and well ramming in layers not exceeding 25cm thick complete all as specified and as directed.

Removal of excavated material [soil] to a distance not exceeding 50 m and depositing where directed at a level not exceeding 1.5m above the starting point complete all as specified and as directed.

Material and labour for clean dry sand in trenches/ducts for cushoning to cable 230mm thick and punned down to depth of 180mm complete all as specified and directed. Note:- Punned thickness shall be measured and paid.

Supplying and laying unreinforced precast cement concrete cable covers, Class HV, type 1 size 300 mm x180 mm x 40mm in trenches for cable protection, embossed with "ELECTRIC" on the top surface complete all as specified and as directed.

Labour for relaying of old unreinforced precast cement concrete cable covers, Class HV, type 1 size 300 mm x180 mm x 40mm in trenches for cable protection complete all as specified and as directed.

Taking down /up XLPE cable HT 3 core 95 Sqmm complete all as specified and directed.

Supply, laying and testing XLPE insulated, screened, PVC bedded galvanised steel strip armoured electric power cable (Heavy duty) with aluminium conductor, 11000 Volts grade lay in trenches, ducts, along pole, along Transformer cross sectional area 95 Sqmm 3 Core complete all as specified and directed.

Taking down HT Cable Jointing kit any type and size complete all as specified and directed.

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

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

M&L for Cable jointing kit for 11 KV (Earthed) grade cable for straight through cold shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 95 sqmm complete all as specified and directed.

M&L for 75 mm bore HDPE pipe PN 10 for cable protection with all fixing accessories such as 40 x3mm Clamps of suitable length, Nut bolts and washers and fixed complete to walls and ceilings or laid in floors complete all as specified and directed.

Taking down HDPE pipe complete all as specified and directed.

Dismantling HT insulator any type any size complete all as specified and directed.

M&L Disc type insulators, porcelain, vitreous 145 mm high and 255 mm dia ball and socket type, white, brown or green single disc assembly suitable for 11000 volt grade supply complete all as specified and directed.

Supply and fixing 11 KV grade pin type insulator of 150mm height, 150mm dia complete including spindle, washers and etc all as specified and directed.

Supply and fix danger notice plate of 1.6 mm thick mild steel sheet, vitreous enamelled white, with letters, figures and conventional skull and bones in signal red colour and fixed with screws, nut bolts with adequate size clamps on HT pole of 25x20 cm size complete all as specified and directed.

Taking down danger notice plate of any size and type complete all as specified and directed.

M & L for Preparing surfaces of two pole structure including cross arms, channels, clamps etc by scrapping old paints and applying two coats of aluminium paint and writing "HT" and Pole No in black paint etc complete all as specified and directed.

All as per item No 1.048 above but for four pole structure.

M&L for repair of jump connection by using ACSR conductor weasel, alkathine pipe ,aluminium lugs, nuts, bolts etc all as specified and directed.

M&L in replacement for anticlimbing device spikes type fabricated out of MS bars (round, square and flat) incl nuts, bolts, washers and welding in two halves made to shape of the pole with two thick coat of aluminium paint complete all as specified.

Taking down anticlimbing device spikes type complete all as specified and directed.

M&L in repair for overhauling GOD set by replacing stationary and moving contacts adjusting from ground level for smooth operation by replacing flexible copper strip, insulators, nuts, bolts, washer, GI pipe handle etc, all as specified and directed. Note- stationary moving contact, post insulator, GI pipe and handle shall be measured & paid seperately.

Supply only GOD handle with locking strip and insulation sleeve complete all as specified and directed.

Supply only GI pipe 25 mm dia "medium grade" 6 metre in length complete all as specified and directed.

Supply only stationary and moving contact set for GOD complete all as specified and directed.

Supply and fixing post insulator 11 KV for GOD complete all as specified and directed.

Cleaning/ clearing of vegitation around the installations and disposing off all as specified and directed.

Supply, fixing, testing and commissioning of air break gang operated device, triple pole mechanically operated outdoor type, mounted on and including 11 KV HT porcelain insulators and steel channel frame, GI operating rod, 25mm dia of suitable length with operating mechanism working from ground level, vertically operated including locking arrangement for operating handle, suitable for current rating upto 200 Amp, 11000 Volts working pressure all as specified and directed.

Taking down GOD/DO fuse with all fitting accessories complete all as specified and directed.

Supply and fix of dropout fuse unit expulsion type for outdoor air break switch (GOD) single pole, mounted on and including insulators for 11000 Volts working pressure fixed to and including MS channel with nuts, bolts, washers etc. synthetic bounded fuse carrying tube complete with line tabs and suitable for current carrying capacity upto 10-60 Amps only all as specified and directed.

Material and labour for stone aggregate 40mm graded spreading and leveling aroung 2 pole/ 4 pole structure where GOD installed including well ramming complete all as specified and directed.

Taking down Lightening arresters station class with all accessories complete all as specified and directed.

M&L for of Lightening arresters, expulsion type transmission class complete with all fittings, station class, discharge capacity 65 kilo amps, suitable for 11000 Volts all as specified and directed.

M & L in replacement Earthing complete with galvanized steel earth plate electrode 60 cm X 60 cm X 6.3 mm thick buried directly in ground (earth pit not less than 2.25 mtr deep below normal ground level) with top edge of plate not less than 1.5 mtr below ground level connecting to the GI strip 32 x 6mm, by means nut bolt, nuts, check nuts and washer of the GI Earth wire protected by provision of GI light grade pipe 40 mm incl provision of concrete pit in PCC (1:2:4) type B-1 using 20 mm graded stone aggregated with 40 mm thick cover with RCC (1:2:4) reinforced with XPM (weight not less than 4 Kg / Sqm) and frame of angle iron 25mm X 25 mm X 3mm with lugs 2 Nos and with 6 mm dia MS bar handle made to shape, GI light grade 20 mm bore pipe for watering perforated at bottom 1.75 mtr long placed on top edge of earth plate, common salt and charcoal filling, test point made out of phosphorus bronze with fixing arrangement, funnel, wire mesh and earth work in hard/dense soil, returning filling in and removal of surplus soil to a distance not exceeding than 50 mtr, all as per electric plate No 3 of SSR Part I 2009 and connection to earth test point all as specified incl testing on completion”.

Taking down GI Strip of any size and type complete all as specified and directed.

M&L for earth continuity conductor fixed to walls , burried in ground or drawing through pipe GI strip of size 32x6mm complete including taking down existing strip all as specified and directed.

Material &Labour for restringing/restretching of HT OH line by replacing pin binding with new aluminium conductor and maintaining sag within permissible limit for 3 runs of ACSR conductor. Note :(i) Span from one pole to next pole (30 to 50 RM) will be considered as a one Job (ii) Any damage cause due to contractormen will be rectified without any extra payment.

Taking down written shut down from concerned JE/AGE (E/M) for trimming of tree branches touching to the HT over head line or near to the HT over head line as per the direction of AGE (E/M)/ JE incharge complete including removing the tree branches. Note :(i) Span from one pole to next pole (30 to 50 RM) will be considered as a one Job (ii) Any damage cause due to contractormen will be rectified without any extra payment. (iii) T & P such as ladder, rope, cutter, Axes and other related material will be provided by the contractor.

Material and labour required for locating fault in U/G HT cable by using fault detector machine including transportation and by carring out high pressure test all as specified and directed.

Material and Labour for dehyderation, filtration and cleaning of transformer oil, both indoor/outdoor/ pole mounted/plinth mounted HT switch gear etc at different locations by suitable dehydration plant testing of oil sample before and after dehydration for each transformer/equipment and results of transformer insulation oil minimum upto 45 KV with 2.5mm gap, recorded jointly by contractor and Engineer-in-Charge complete including all necessary tools, plants, transportation etc all as specified and directed. Note : Oil for toping up/ fresh fill shall be measured and paid seperately under relevant item.

Material and Labour for toping up transformer oil level with and including new transformer oil confiming to IS-335 including all necessary tools, plants, transportation etc all as specified and directed.

M&L for acidity test of insulating oil of pole mounted/ plinth mounted transformer all as specified and directed.

M&L for painting the transformer of capacity 400 KVA by spray painting with applying two coats of synthetic enamel paint including prepartion of surface by scrapping old paint all as specified and directed and writing SM No, MES No, and capacity of transformer etc complete.

All as per item No 1.074 above but of capacity 315 KVA

All as per item No 1.074 here- in- before but of capacity 200 KVA.

All as per item No 1.074 here in before but of capacity 100 KVA

M&L for repair to transformer pole mounted/ plinth mounted of any capacity to stop the leakage of transformer by lifiting core assembley with the help of chain pully block/crane, removing transformer oil, replacing cork sheet gasket 5mm thick, reassembling the transformer completely, refilling transformer oil, connecting HT/LT connection of capacity 100 KVA to 630 KVA complete all as specified and directed.

Material and labour for removing old silica gel, cleaning breather and filling new silica gel complete all as specified and directed.

Taking down old breather complete all as specified and directed.

M&L for breather assembley with silica gel all as specified and as directed.

Taking down old porcelian bushing HV side/ LV side, HV/LV brass rod of any size and make along with brass nuts and rubber bush complete all as specified and directed.

S&F Porcelain bushing LV side 440Volt of required/ adequate size and shape complete all as specified and directed.

S&F of HT bushing porcelain, vitreous brown/ green 11000 Volts grade suitable for any type of transformer all as specified and directed.

S & F HV rod brass, 12mm dia with brass nut 2 Nos and rubber bush 300mm long all as specified and directed.

S & F LV rod brass 15mm dia, 300mm long with rubber bushing and brass nuts 2 Nos all as specified and directed.

S & F LV rod brass 20mm dia 300mm long with rubber bushing and brass nuts 2 Nos all as specified and directed.

Taking down old drain valve any size or type complete all as specified and directed.

M&L for gun metal drain valve screwed both ends with iron wheel head, 25 mm dia complete all as specified and directed.

M&L for gun metal drain valve screwed both ends with iron wheel head, 40 mm dia complete all as specified and directed.

M&L for gun metal drain valve screwed both ends with iron wheel head, 50 mm dia complete all as specified and directed.

M&L for disconnection LT and HT terminals of transformer, fixing and installation of spare transformer in place of Unservicable one or making proper arrangement for distribution of load on nearest transformer. Transportation of repairable transformer to contractor work shop. Dismantling the transformer 100 KVA removing core & coils, drain out oil, removing tap changer and other parts, inspecting and reassembling the transformer by replacing spares all as specified and directed.

All as per item No 1.092 above but 200 KVA transformer.

All as per item No 1.092 above but 315 KVA transformer.

All as per item No 1.092 above but 400 KVA transformer. NOTE* Rewinding of coils and replacement of spare parts required shall be measured and paid under relevent items of this Schedule.

Supply and fixing new HV coil DPC copper of suitable gauge and size as per existing complete all as specified and directed.

Supply and fixing HV coil SE copper of suitable gauge and size as per existing complete all as specified and directed.

Supply and fixing LV coil copper of suitable gauge and size as per existing complete all as specified and directed.

M/s Barua and Co.

M/S BENGAL ENGINEERING ENTERPRISES

SARKAR ENGINEERING CO.

M/S R. K. INDUSTRIES

M/S SUNNY ENTERPRISE

M/s Saha Construction Co.

M/S SUPARNA ELECTRICALS