REPAIR/MAINTENANCE OF EXTERNAL ELECTRIC SUPPLY NETWORK, H.T. CABLE, VCBS, DISTRIBUTION TRANSFORMER AND CONNECTED WORKS AT AF STATION ARJAN SINGH UNDER GE(AF) PANAGARH

Amount

Material and labour for excavating in trenches not exc 1.50 mtr wide and not exc 1.50 mtr in depth for taking out/laying of under ground cable, pole or stay and getting out in soft/loose soil, complete all as specified and as directed.

Material and labour for excavating in trenches not exc 1.50 mtr wide but exc 1.50 mtr depth for taking out/laying of under ground cable, pole or stay and getting out in soft/loose soil, complete all as specified and as directed.

Returning, filling in soft/loose soil, including spreading, levelling, watering and well ramming in layers not exc. 25 cm complete all as specified and directed. (NOTE : The top of filled trench shall be made proud by using the excavated soil to cater for subsequent settlement of soil).

Removing excavated materials (soils) not exc 50.00 mtr and depositing where directed at a level not exc 1.50 mtr above the starting point, complete all as specified and as directed.

Supply and spreading dry fine sand of approved quality for cushioning of underground electric cable laid in trenches all as specified and directed by the Engineer-in-Charge

Supply and fixing in replacement GI pipe (light grade) 80mm bore dia for cable protection including all necessary fittings, laid in trenches or fixed on pole all as specified and directed.

S&F in replacement lightning surge arrestors, expulsion type complete with all fittings such as bolts, nuts, washers etc , transmission class, discharge capacity 65 kilo-amp all as specified and directed (Make : Elpro/Alstom/Oblum/Rastriya Atlas/ Pactil).

M & L disconnecting and taking out HT VCB for Overhauling of Spring charge unit including cleaning & removing of scales, soot or any hydroscopic layer accumulated on copper bus bar using proper chemical cleaning reagents like CRCs, ,checking nuts, bolts, make break operation both mechanically and electrically smooth including greasing of all moving/ fixed contact, nut & bolts checking contact resistance, Internal control wiring, repairing/replacing heating coil removing moisture for all the feeders complete all as directed by EIC. (Note: Spares required for replacement will be measured and paid separately)

M & L disconnecting of cables from HT VCB panel , checking of earth fault and over current relays, testing of relays with the help of relay testing kit (boosting Kit) and resting of relays as per desired load current, reconnecting the cables , including calibration of relays, for proper tripping and functioning and replacement of unserviceable parts if required and testing complete for tripping all as directed by Engineer-in-Charge.(Note: Spares required for replacement will be measured and paid separately)

M & L for replacement of under mentioned unserviceable items (to be incorporated against item No. 8.00 & 9.00 here-in-before :-

LED Indicator lamp of voltage Range all as specified & as directed : - 110A - 110 VAC 110D - 110 VDC 240A - 240 VAC 220D - 220 VDC

Heating Coil all as specified & directed.

Single Phase VCB Spring Charging Motor assembly, M-MS-MAS aux voltage 110-130V for VD4 EL with SN type complete all as specified & as directed.

Supply and fix three phase over current and earth fault relay, suitable for CT Secondary 1 Amps or 5 Amps, Aux Supply 77-250V DC/AC (230VAC) suitable for existing breakers including taking down old unserviceable relay (Make: Ashida/Crompton/Areva or equivalent approved)

Supply and fix tripping coil DC 24/110 Volts suitable for existing breakers

Supply and fixing IDMTL relay suitable for double over current and earth fault function complete all as specified and directed suitable for existing breakers including taking down unserviceable relay (Make : Ashida,Model No-ADR141S/141C or equivalent as approved)

Dismantling and taking down unserviceable MS cross arms, bracings and supports, clamps, nuts, bolts all as directed by Engineer-in-Charge.

Material and labour for mild steel work as in cross arms, bracings, supports, clamps and back plates, fabricated from structural steel section including nuts, bolts, washers, welding, bending cold or hot , drilling holes for bolts in any shape/size as directed including painting with two coats of approved colour over a coat red-oxide primer all as specified and directed by Engineer-in-Charge.

Material and labour for fixing in replacement cradles, hexagonal / rectangular, fabricated with galvenised steel wire 3.15 or 4 mm dia all as specified and directed by Engineer-in-Charge.

Dismantling and taking down including disconnecting unserviceable aluminium conductor steel reinforced from the pole/cross arm of any size dia type complete all as specified and directed by Engineer-in-Charge.

Supply, stringing and fixing on existing poles, ACSR conductor of any type/ size including fixing to insulators with binding wire complete all as specified and directed by Engineer-in-Charge.e (Make: Allind/ ICC/ Bharat Conductor/VK conductors/ NICCO).

Material and labour for cable jointing kit for 11KV (Earthed) grade cable, heat shrinkable type joint complete with jointing material and accessories suitable for 3 core, XLPE armoured aluminium conductor cable including testing etc of the following types and sizes :-

Straight through joint kit for 50 sqmm to 95 sqmm 3 core (Make: Densons/M-seal, Raychem/Siemens/Yamuna Gases & Chemicals) (Notes :- (a) Cutting of faulty cable / joint is deemed to be included in the above quoted rates.; (b) Earth work i.e. excavation, returning filling & removal of surplus soil will be measured & paid separately under relevant item of this Schedule.)

Surface excavation in hard/dense soil including sand and pebbles for removing vegetation and bushes not exceeding 30cm depth in Power houses / Sub station area complete all as specified and as directed.

Supply, spreading & leveling aggregate of gauge/ size 40 to 80 mm around transformer, HT two pole structure, HT four pole structure etc in sub-stations complete all as directed by Engineer-in- Charge.

M&L providing PCC 1:3:6, type C2 (using 40mm graded stone aggregate) in foundation of poles, stays etc.

M&L for PCC 1:2:4, type B2 (using 20mm graded stone aggregate) for pedestal, plinth block, coping etc including necessary formwork and finishing the concrete surface even and smooth using extra cement complete all as directed by Engineer-in- Charge.

Supply and install in replacement steel tubular swaged poles, type 410 SP-55 (11 mtr long) complete with CI base plate and finial taper plug, bolts, nuts and screws as specified all as specified and directed by Engineer-in-Charge. (Note :- Excavation and earth work,concrete in foundation & plinth block/coping will be measured and paid separately ).

Filtration & de-hydration of transformer oil to achieve the test results as per IE rules with filtration plant including topping up of transformer oil complete all as specified and directed by Engineer-in-Charge. (Notes : a)Tthe filtration of the transformer oil is to be carried out at different sub stations of the area b) The report before filtration & after filtration to be submitted by contractor in the approved format. c) Transformer oil for topping up will be measured under respective item of Sch A.

Supply only Transformer oil confirming to IS : 335 Std for topping up in distribution transformer duly filtrated under respective item of Sch A complete all as specified and directed by Engineer-in-Charge (Make : Power Oil/ Savita Oil )

Material & labour painting of transformer of the following capacities complete including conservator tanks, fins etc of the undermentioned capacities with two coats of synthetic enamel paint (smoke grey shade) after preparation of surfaces by cleaning agents, incorporating spray painting machine & writing MES No, SM Nos, capacity, Serial No, date of dehydration etc. complete all as specified and directed by the Engineer-in-Charge :-

Transformer capacity up to 250 KVA

Transformer capacity from 250 KVA to 500 KVA

M&L 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 taking out old unserviceable rusted out anti climbing devices complete all as specified and directed by Engineerr-in- Charge.

Supply and fixing danger notice plate 1.6 mm thick of mild steel sheet, vitreous enameled, white, with letter, figures and conventional skull & bones in signal red colour & fixed with M.S. clamps, bolts, nuts and of size 25 x 20cm for HT 11KV including taking out old unserviceable rusted out danger plates complete all as specified and directed by Engineer-in- Charge.

Material and labour for Earthing in repairs with galvanised steel earth plate electrode 600x600x6mm thick burried directly in ground, earth pit not less than 2.25mtr deep below ground level with top edge of the plate not less than 1.5mtr below normal ground level connected to GI earth strip of 32x6mm by means of nuts, bolts, checking nuts, washers of galvanised iron or steel all as shown in electrical plate No.3 of MES SSR part-I connected to earthing test point including excavation & earth work in any type of soil, PCC 1:3:6 type C-1 chamber with 50 mm thick RCC 1:2:4, type B-1 cover slab reinforced with 6 mm dia plain round bars @ 100 mm c/c both ways, 40 mm bore GI protection pipe (light grade) , 20 mm bore GI pipe (light grade) for watering purposes, with M.S. sheet funnel & wire mesh complete all as specified and directed by Engineer-in-Charge. (Note:- GI strip beyond 7.5 mtr in length shall be measured & paid for separately).

All as per item No. 27.00 here-in- before but plate earthing with copper earth plate electrode of 600x600x3.15 mm size and 20 x 3mm copper strip as earth lead.

Supply & Fix GI strip 32x6 mm as earth continuity conductor or main earthing lead fixed on poles / walls, laid in trenches including fixing arrangement all as specified & directed.

Dismantling & taking out old HT conductor joints from HT poles /sub-stations.

M&L for hydraulic compression type wedge joints for ACSR Mink / Ferret conductor with aluminium connectors , lugs, Aluminium barrel type lugs, SS nuts, bolts all as shown & directed. (Notes :- (a) The Supply only of SS nuts, bolts and S & F of conductor will be measured & paid separately. (b) The tools & plants required for carrying out the job shall be deemed to be included in the job. (c). The Contractor is advised to visit the site before quoting for the item.

Supply only the following spares for Wedge Joints :-

Compression type 'T' connector suitable for ACSR Mink / Ferrite Conductor

Compression type 'T' connector suitable for ACSR Mink / Ferrite Conductor

Compression type long barrel lugs suitable for ACSR Mink/ Ferrite Conductor

Compression type CT/PT/Transformer clamp suitable for ACSR Mink/ Ferrite Conductor

Stainless steel nut, bolts of size 8mm dia 40 mm long with washers and 2 Nos nuts

Stainless steel nut bolts of size 10 mm dia 40 mm long with washers and 2 Nos nuts

Dismantling 11KV of 400Amps current rating air break gang operated switches vertical / horizontal mounted including insulators and operating mechanism for insulators and operating mechanism for repair / replacement of broken / worn out components and insulators etc. or carrying to store yard for safe custody for further disposal or as specified or directed. (Note :- Unserviceable spare/components for replacement will be measured and paid for separately under respective Sch 'A' items as "Supply only")

Supply only the following items ( to be incorporated under item No : 33.00 here-in-before) :-

Male contact/moving contact blade of gang operated AB switch devices suitable for 11 KV

Female contact /fix contact jaw for gang operated AB switch devices. suitable for 11 KV

Tinned copper flexible jumper 200/200 Amps suitable for 11 KV

Post top porcelain insulators of gang operated AB switch devices. Suitable for 11 KV

Middle post porcelain insulators of gang operated AB switch devices. Suitable for 11 KV

Bottom post porcelain insulators of gang operated AB switch devices. Suitable for 11 KV

MS jumper carrier suitable for 11 KV

Back connector plate suitable for 11 KV

M&L for Repairs to drop out fuse unit complete of upto 400 Amps, 11 KV capacity including replacement of worn out nut bolts, washers of suitable size /unserviceable spares and jumper connections for smooth functioning of the devices all as directed by Engineer-in-Charge. Note :- (i) Minor spares / consumable items deemed to be included in the quoted rates (ii) Unserviceable spares such as fix top / lower contact, insulators replaced will be measured and paid separately as "Supply only"

Supply only the following items ( To be incorporated under Item No : 35.00 above) :-

Fix top contact/L contact for drop out fuse.

Fix lower contact for drop out fuse.

Post insulators of drop out fuse.

Supply & Fixing ACSR conductor(Ferret) jumper connections of the following lengths both ends secured with suitable aluminium lugs or one end with AI lugs and other end plain for binding with conductor encased with polyethylene pipe, RYB colours of suitable dia complete all as directed :-

Exceeding 0.75 mtr length but not exceeding 1.5 mtr length.

Exceeding 1.5 mtr length but not exceeding 2.5 mtr length.

Exceeding 2.5 mtr length but not exceeding 3.0 mtr length.

GI pipe, light grade,20 mm bore made to shape for gang operating from ground.

Supply, install, testing and commissioning in replacement of 11KV outdoor type porcelain based gang operated air brake switch triple pole, suitable for vertical mounting complete with expulsion fuses, GI operating rod of suitable length for operating mechanism worked from ground level complete in both OFF and ON positions, for current rating upto 200 Amps, each pole consist of galvanised steel base HT insulators as per BSS / ISS non ferrous knife and spring loaded contacts, arcing horns of adequate section to brake magnetizing current of the transformers. All ferrous parts hot dipped galvanised and non ferrous parts heavily tinned to withstand weather. (Make : Pactil (Madras)/Southern Switchgear/ Universal/ BHEL/ ELPRO/Rastriya)

All as per item No. 38.00 here-in-before but of current rating 400 Amps

S&F in replacement based dropout fuse unit complete set suitable and including for 11 KV, HT outdoor and dropout type of capacity 200 Amps including jumper connections with copper flexible designed jumper and testing and commissioning all as per the directions of Engineer-in-charge .

All as per item No. 40.00 here-in-before but of current rating 400 Amps

S&F in replacement Pin type insulator of 11 KV including necessary hardware complete all as specified and as directed. (Make : Alstom/Oblum/Rastriya/ Jayshree/ BHEL/ Atlas/Pactil).

S&F in replacement disc type insulator, ball and socket type, 2 in series for 11 KV including necessary hardware complete all as specified and as directed. (Make : Alstom/Oblum/Rastriya/Jayshree/ BHEL/ Atlas/Pactil).

Dismantling and taking down of unserviceable HT insulators any size/type/capacity and keeping aside for safe custody for further disposal as specified or directed by Engineer-in-Charge.

M&L for disconnecting the Pole mounted /platform mounted outdoor / indoor type distribution transformers situated at various locations inside various sub stations rating 11 / 0.433 KV of any make and transporting to workshop for repairs/ rewinding. Dismantling the transformer and accessories, removing insulating oil, taking out the core assembly, taking out the defective winding, cleaning the transformer complete internally and externally, rewinding burnt HT/LT coil with existing gauge of copper super enameled wire / copper strip of existing size, providing new insulation, sleeves for outlet connections, opening the complete core assembly, reassembling, including dehydration and filtration of Transformer oil to achieve desired dielectric strength, carrying out routine test, re-installation and commissioning. The repair work also includes the routine tests i.e. IR value, High voltage test, Ratio test, Short circuit test & BD value of oil of the transformer to be carried out at workshop for following capacities of transformer :-

Transformer capacity from 63 to 125 KVA.

Transformer capacity from 150 to 500 KVA.

Notes applicable for Sl item Nos 45.1 & 45.2 :- (i) Copper winding wire/strip will be measured and paid separately. (ii) Insulating oil for topping up will be measured and paid separately. (iii) Transportation of transformer for repair and re-installation is deemed to be included in quoted rates.

Supply only super enameled copper winding wire of various gauges or existing specifications for repair and rewinding of transformers under item No. 45.00 here-in-before, primary and secondary coils including necessary class of insulation as specified and directed. (Make : ISI marked as specified or directed by GE / Engineer-in-Charge.)

Supply only DPC copper strip of various gauges of existing specifications for repair and rewinding of transformers under item No. 45.00, primary and secondary coils including necessary class of insulation as specified and directed. (Make : ISI marked as specified or directed by GE / Engineer-in-Charge.)

M&L for carrying out Lab test for acidity of Transformer oil for various Transformers and submitting test report on the format as directed by Engineer-in-Charge.

Disconnecting the distribution transformers outdoor / indoor type from HT/ LT system and opening carefully at site only by draining out transformer oil upto HT/LT boxes for rectifying the leakage by replacing the unserviceable spare parts of capacity 25 to 500 KVA transformer, refilling the transformer oil and complete assembling after repairs including testing for any oil leakages and connecting the HT/ LT system after the leakages have been rectified and tested on available electric load all as specified and directed by Engineer-in-Charge. (Note :- Defective parts/components replaced will be measured and paid separately as "Supply only" under respective items here- in-after).

Supply only LT bushings with brass studs of existing specification.

Supply only top cover gasket set of existing specification..

Supply only radiator flanged gasket 6 mm thick of existing specification..

Supply only oil level indicator gasket set of existing specification.

Supply only HT bushing with studs 11 KV of existing specification.

Supply and fix in replacement explosion vent diaphragm of suitable size to match with the existing.

Supply and fix in replacement of breather assembly transparent plastic body with top and bottom portion pressed with metallic cover, filled with silica gel blue in colour and suitable for fixing on existing pipe of size 15/20/25 mm dia with suitable reducers/connectors etc as per site requirement /capacity of transformer. Note :- Rate quoted shall be deemed to include the cost of modification if any required to fix on existing MS Pipe all as specified and directed by Engineer-in-Charge.

M&L for taking down transformer oil level indicator assembly from conservator tank of transformer upto 500 KVA capacity from position for making visibility of oil level by lowering oil level in conservator including cleaning thoroughly, replacement of gasket and acrylic sheet, reassembling in position, refilling the removed oil all as specified and directed by Engineer-in-Charge.

Taking out / down faulty serviceable11KV, HT UG cable in existing trenches/duct/on HT poles of nominal cross sectional area from 16 to 185Sqm, 3 core including disconnecting, PCC covers, GI Pipe etc. of any descriptions, including segregation of serviceable materials viz PCC cable cover, GI Pipes etc. and tracing the location of fault and keep in safe custody for re-use complete all as specified and as directed (Notes : (i) Earth work shall be measured and paid for separately under relevant items. (ii) Serviceable cable covers will be kept aside for re-use. (iii) Serviceable GI pipe will also be kept aside for re-use.

Re-laying only old PCC cable cover in trenches for under ground cable protection complete all as specified and directed.(Note: Serviceable materials obtained from item No. 53.00 here-in-before to be used),

M&L for one primer coat, one under coat and one finishing coat of aluminium painting to HT steel tubular poles upto 11 mtr long , including angle iron cross-arms channel/angle scetions, clamps etc complete including necessary preparation of old painted surfaces and numbering of poles all as specified and directed by Engineer-in-Charge.

All as per item No 55.00 here-in-before but RCC pole upto 11 mtr long

All as per item No 55.00 here-in-before but two pole structure upto 11 mtr long

All as per item No 55.00 here-in-before but two pole structure upto 11 mtr long

M&L for disconnecting electrical connection from HT / LT terminals and earthing connection of faulty double copper wound, oil cooled transformer of capacity 750 KVA. Transporting to site to workshop for repair / replacement by dismantling carefully and removing faulty / burnt parts, HT/LT winding, drain out oil in barrel for reuse, rewinding incl re-insulation of HT/LT coil with super enameled copper wire with equal gauge of existing copper wire, cleaning of core / tank, changing air breather assembly with pipe, oil level indicator, defective HT/LT bushing with terminal connection and re-installation with complete connection as required and directed by Engineer-in-Charge. Make: NUCON Note: Rates of following spares parts (a) to (x) deemed to be included in the quoted rate. (a) Transformer Lifting and deliverey labour charge. (b) Transformer Loding and unloading charge. (c) Dismantling charges (d) Design preparation charge. (e) Full HV side ware rewinding labour charge. (f) Full SV side ware rewinding labour charge. (g) LT ware DPC labour charge. (h) PCB Insulation (j) Tacking and connection (k) Gas cutter charge (l) Tap changer and ratio fitting (m) Mill paper +Bake light tube +Soldering +Oil seal + HV member + Cotton tape + Sleeve's (n) DPC paper charge (o) Gasket Sheet 5 mm & 8mm (p) Press board 1mm & 3mm (q) Transformer colour + cleaner & paint labour charge (r) Assembly + Boxing+ Cleaning and Drying charges. (s) Heat Chamber charges (t) Insulation paper charge (u) Core full open and set-up charge (v) Transformer Testing charge (w) Oil reclaim charge (x) ST 11 SWG new copper wire with DPC

KMT INDUSTRIES