REPAIR /MAINTENANCE OF TRANSFORMER, HT NETWORK SYTEM, RMU INCLUDING REPLACEMENT OF CTs/PTs AND BATTERY BANK AT AF STN BAREILLY

Amount

Excavation in trences in soft/loose soil not exceeding 1.5m wide and not exc 1.5m in depth including getting out for laying of pipe/taking out pipe/for relaying of CI Pipe/GI pile line all as specified and directed.

Returning filling in including spreading leveling, watering and well ramming in layers in soft/loose soil not exceeding 25cm after laying pipe all as specified and directed

Removal of surplus soil to a distance not exceeding 50 Mtr and depositing where directed at a level not exceeding 1.5 Mtr From the starting point al as specified and directed

M&L for dry sand cushioning to underground cables with 8 CM thick before laying of cables and 15 CM thick after laying and stretching of Cable complete all as specified and directed. Note : Only punned thickness i.e. 18 CM shall be measured and paid.

M & L for sub class 'B' brick for covering to under ground cable laid flat transversally width equal to the lenth of the cable complete all as specified and directed.

Laying only old serviceable brick for covering to under ground cable laid dry, flat transversally width equal to the length of the cable all as specified and directed.

Taking down of HT cable 70 Sqmm to 240 Sqmm, 3 core from trenches/ panel/ wall for locating the fault and relaying the same after rectfication of fault complete all as specified and directed. Note :-(i) Cost of fault rectfication like HT jointing kits ,thimbles, HT tape etc will be measured & paid seperatly) (ii) Exacavtion and earth work shall be measured and paid seperately under respective item of BOQ.

S&F GI steel tubes 'Medium grade' with all fittings, laid in trenches or inserting in horizontal boaring as required for cable protection and including taking down old unserviceable corroded pipe complete all as specified and directed of following sizes :-

(a) 80mm Bore

(b) 100mm Bore

M&L for horizontal boring / drilling under Road, pavement, Taxi Runway track and hard standing complete with inserting GI pipe light grade of following size complete all as specified and directed :- Note :- GI pipe shall be measured and paid seperately

(a) 80mm bore

(b) 100mm bore

Supply and laying or fixing jointing and testing 11 KV (E) system XLPE insulated, screened , PVC bedded, galvanised steel strip or wire armoured, electric power cables( heavy duty) ISI 7098 marked with aluminium conductor, 11000 Volts ( earthed), laid under floor/ground or fixed naked with wall complete of cable size 95 Sqmm 3 core complete all as specified and directed. MAKE: Polycab,Havells, Universal, Gloster, RPG(Asian)

Supply and fix cable jointing kit for 11 KV (earthed) grade cable for straight through heat shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured Al conductor cable of following sizes complete all as specified and directed. Note :- Kit shall not be older than 3 month from the date of manufacture) Make: Denson by Yamuna power, 3M or Raychem by RPG Group.

(a) 95sqmm x 3core

(b) 120sqmm x 3core

(c) 240sqmm x 3core

Supply and fix cable jointing kit for 11 KV (earthed) grade cable for outdoor heat shrink type end joint complete with jointing material and accessories suitable for 3 core XLPE armoured Al conductor cable of following sizes complete all as specified and directed. Note :- Kit shall not be older than 3 month from the date of manufacture) Make: Denson or equivalent as approved by GE

(a) 50 sqmm to 95 sqmm x 3 core

(b) 120 sqmm to 185 sqmm x 3 core

(c) 240 sqmm x 3 core

Supply and fix cable jointing kit for 11 KV (earthed) grade cable for indoor heat shrink type end joint complete with jointing material and accessories suitable for 3 core XLPE armoured Al conductor cable of following sizes complete all as specified and directed. make: Denson by Yamuna power, 3M or Raychem by RPG Group

(a) 50 sqmm to 95 sqmm x 3 core

(b) 120 sqmm to 185 sqmm x 3 core

(c) 240 sqmm x 3 core

Handling, transportation of transformers of any make, type and any capacity upto 1.6 MVA of any make, model & type including hoisting, taking down from pole (pole mounted), plinth mounted by any means mechanically pulley/mechanical crane, transportation to MES store Yard/workshop for repair/maint. Hoisting/lifting and fixed in position pole mounted/plinth mounted including disconnecting and connecting all cable, earth lead, clamps and channels etc as per site requirement and testing after installation complete all as directed by Engineer-in-Charge. Note : If any damage to transformer/OH line/cables occur during handling, transportation or during hoisting/lifting, the same will be rectified by the contractor without any extra cost to the department.

M&L for winding of HT coils of transformers with super enamelled copper winding wire of appropriate gauge along with allied insulating material complete all as specified & directed.

Material and labour for winding of LT coils of transformer with cotton braided copper wire /strip of appropriate size along with allied insulating materials for any type and capacity of transformers complete all as specified and directed.

Supply and filling new filtered and tested completely transformer oil confirming to IS 33593 ( 4 th revision ) suitable for transformer /OCB/ Voltage Stabliser etc to the required level and including draining out old unserviceable transformer oil complete all as specified.

Supply and fix LV bushing with metal parts 415 volts grade brass spindle and 4 Nos hexagonal nuts, complete all as specified and directed.

Supply and fix HV bushing brass/ GM, brass/GM spindle and 4 Nos hexagonal nuts, complete all as specified and directed.

Supply and fix cork sheet gasket set for transformer top cover complete all as specified and directed.

Supply and fix 40mm bore stop valve, cast copper alloy, screwed down high pressure (drain valve) complete all as specified and directed.

Scraping out old burnt insulation from LV winding and providing fresh re-insulation to LV coil and winding complete all as specified and directed.

M&L for hammer tone spray painting of transformer 11 KV/415 volts indoor/outdoor type of following capacity, including cleaning, scraping of exposed surfaces with shade as approved including writing MES number and machine number with black paint, letters 15mm wide and 50mm long complete all as specified and directed.

(a) Cap of Transformer 63 KVA to 100 KVA

(b) Cap of Transformer 125 KVA to 250 KVA

(c) Cap of Transformer 300 KVA to 400 KVA

(d) Cap of Transformer above 400 KVA but upto 750 KVA

(e) Cap of Transformer above 750 KVA but upto 1.6 MVA

Supply and fixing of Arcing horn as per existing design complete with nut bolts washer and properly tightening for following capacity of transformer including taking down old unserviceable one all as specified and directed.

(a) Transformer capacity 1.5 MVA to 1.6 MVA

(b) Transformer 400 KVA but upto 750 KVA

(c) Transformer 300 KVA to 400 KVA

(d) Transformer 125 KVA to 250 KVA

Filtration/dehydration of transformer oil for increasing dielectric strength 35 to 40 KV at 2.5 mm gap, if the results below 45 KV, the oil shall be replaced with new oil. Note: New oil required for toping oil levels or for replacement shall be measured and paid separately.

Note : Filteration of TR oil will be carried out at site, transformer will not be send to workshop for filteration/dehydration of oil. Contractor will arrange filteration machine, testing machine and electric cable for connection to filteration machine, whatever distance may be or will arrange generator for electric connection to machine to run continous for 8 hrs. The dielectric strength should not be less than 40 KV.

M&L for repair of battery bank by filling up distillied water in lead acid battery, cleaning of battery terminal, replacement of U/S batteries including repairing variable type rotary transformer (automatic battery charging system) suitable for input of 230 volts, AC, 50 Hz single phase and having adjustable charging rate upto 40 AH at 30 V DC complete all as specified and directed. Note:- Unserviceable battries shall be measured & paid seperately)

Supply and filling of lead acid battery of rating 2 Volt 40 AH suitable for connecting in series in battery bank system complete all as specified and directed.

Supply and replacing Brass connector for L V Bushing of transformer 11000/433volts of following capacity and including taking down old unserviceable one complete all as specified and directed:

(a) 200amps rating ( as per sample)

(b)400amps rating ( as per sample)

(c) 600amps rating ( as per sample)

Supply and Replacement of breather assembly including filled with fresh silica gel for following capacity of transformer

(a) 1.5 MVA to 1.6 MVA

(b) 400 KVA to 750 KVA

(c) 250 KVA to 315 KVA

(d) 63 KVA to 200 KVA

Supply and Replacement of oil level indicator glass as per original size complete all as specified and dirceted.

Labour only for Disconnecting, Shifting of transformer/HT OCB/ VCB from one location to another location inside air force station and making connections complete all as specified and directed.

Maintenance of 33KV indoor remote control panel of 33KV VCB-03 Nos by checking circuit wiring from outdoor VCB to indoor control panel, tightening of loose connections, replacing burnt out connections, U/S indicator with holder, thimble, unserviceable wire including testing and load setting of relays complete all as specified and directed.

Maintenance of 11KV VCB Control Panel by checking circuit wiring, tightening of loose connections, replacing burnt out connections, U/S indicator with holder, push buttons, connectors, thimble, U/S wire including testing and load setting of relays complete for satisfactory functioning of CB tripping mechanism complete all as specified and directed.

General maintenance of HT switch gear 11 KV 400 Amp make -Cromption Greaves Model ALA1/XL. The maintenance job mainly comprise of the following - (i) Isolating OCB truck and checking of free movement for closing and withdrawing. (ii) Examination of insulating component for distorpion brush discharge (indicated by gray spots or carbon deposits) hair line crack in porcelain including necessery wiping cleaning primary and secondery circuits. (iii) Testing of primary and secondary circuit with 10000 volts megger for insulation resistance. (iv) Testing and synchronzation of meters and relays and testing as per load. (v) Cleaning and wiping down of busbar phase barriors support and sleeves. (vi) Tightening of nuts/bolt and lubrication of pivot point. (vii) Opening of tank cover by loosening the tank bolt and taking out breaker from the tank carefully, decanning oil from the tank for condensastion and foreign material with dry lint free cloth, filling tank with new transformer oil and refixing breaker in the tank carefully. Note:-Oil will be measured and paid seperately.

S & F Indicating lamp LED Type (R, Y B) complete all as specified and directed.

Disconnection of PT 11000V, for rewinding complete HV winding with appropriate size of insulated copper conductor/strip including replacement of burnt out parts all as required, replacement of fuses 3 nos and transformer oil, die -electric strength not less than 45KV, Refixing the PT on the same OCB 11KV, making all connections complete all as specified and directed. Note:- Transformer Oil shall be measured separately under respective item of schedule.

Opening of serviceable/ unserviceable RMUs 11KV up to 4 WAY (Make - ABB) for checking of circuit wiring, tightening of loose connections, replacement of burnt out wiring if any including Load setting of relays of same for smooth functioning of RMU and testing of relay by using dummy load on load side complete to the satisfaction of Engr-In-Charge all as required at site complete all as specified and directed.

Alll as per Item No. 39 above but for RMUs 5 WAY or 6 WAY Make - ABB

All as per Item No. 39 above but for RMU 9 WAY Make- ABB

Supply and fixing set consisting of 3 HV- Back up fuse Link for three phases indoor type conforming to IEC 60282-1 suitable for fixing in 11 KV RMUs Make- ABB (for load up to 250 KVA) of current rating (capacity) 10A having short circuit rating not less than 63KA Make ABB Cat No 1YMB531035M0002 complete all as specified and directed.

Supply and fixing set consisting of 3 HV-Back up fuse Link for three phases indoor type conforming to IEC 60282-1 suitable for fixing in 11 KV RMUs Make ABB (for load up to 250 KVA) of current rating (capacity) 16A having short circuit rating not less than 63KA Make ABB Cat No 1YMB531035M0003 complete all as specified and directed.

Supply and fixing set consisting of 3 HV-Back up fuse Link for three phases indoor type conforming to IEC 60282-1 suitable for fixing in 11 KV RMUs Make ABB (for load up to 250 KVA) of current rating (capacity) 25A having short circuit rating not less than 63KA Make ABB Cat No 1YMB531035M0003 complete all as specified and directed.

Repairing of the 11 KV gang operating switches by replacement of the following spares :

Replacement of post insulator 11 KV

Replacement of male contact /Moving contact 11 KV

Replacement of female contact /Fixed contact 11 KV

Replacement of copper flexible braider along with MS cross link

Labour only for Pruning of trees and branches along the HT/LT over head electric lines, surrounding of LT/HT poles, panels Sub-STN bldgs & transformers at different location at ' MRS 33 KV station, should be cleared upto 3mtr of outer edge of assests & removing/disposal of branches out side the line area including Re-stretching, restraining ACSR conductor laid over, OH LT/HT line on steel/PCC poles after removing the binding from insulators, lowering the ACSR conductor or broken OH line due to any reason, jointing the broken conductor, Re-winding the ACSR with insulators including providing binding wire, jumpering & connecting the existing service cables after re-stretching/Re-straining to OH line & removing unavoidable sag in the lines, complete all as specified. Note : Single conductor/earth wire will be measured and paid seperately.

M and L for Cleaning of the area with removing the green grass patches /Bushes/small ornamental plants/herbs from the complete area of 33 KV receiving station with suitable T&P and covering the area with suitable peables of suitable size dressing/cleaning the area complete and afterwards sparying the complete area with suitable herbicide to stop the growth of weeds and grass as desired and directed by Engr n charge.( Note: the complete Job will be done only after taking proper shut down of 33 KV HT Line. Shut Down will provided by the Dept. with Liasion of SED.) Note: cleaning of area shall be done once in a three months.

Supply and fixing commissioning and testing of dial type temperature gauge 110mm dia temperature range 0-100 degree C with thermostat built in switch, including taking out existing unserviceable temp gauge complete all as specified and directed.

M&L for silica gel in transformer breather of various capacities i.e. 63 KVA to 1600 KVA including taking out existing unserviceable, all as directed.

M&L Lightening arrester expulsion type complete with all fitting, transmission class , discharge capacity 65 kilo amp suitable for 33000 volts and including taking down old unserviceable one complete all as specified and directed.

Repairing of 33KV isolator by replacing jaw and blade assembly complete all as specified and directed.

Repairing of 33KV isolator earth link by straightening earth link, replacing worn out knivs, bolts, nuts, welding cracked joints of operating rod complete all as specified and directed.

S&F 33 KV Post insulator all as specified and directed. Make-Jaipuria brother /CG/Siemens.

Supply only HT 11 KV Tape insulation black complete all as specified and directed.

Supply only Tape insulation 20 mm width 25 Mtr length of diffrent colours complete all as specified and directed.

Supply only Tinned Copper Fuse Wire 22 Gauge or as required at site complete all as specified and directed.

S&F Charging Motor of VCB for the opening and closing of contacts of any phase for HT 11 KV VCB complete all as required and directed at site as per 11KV VCB complete all as per sample. Make of VCB : CG.

Supply and filling of SF-6 Gas suitable for RMUs to the required level and including checking of leakage of gas complete all as specified and directed.

Material and labour complete for taking out tap changing gear unserviceable for replacement, including supply and fixing making connection testing and commissioning new tap changing gear transformer of any description and make complete all as specified and as directed.

Material and labour for earthing complete with copper earth plate electrode 600 mm x 600 mm x 3.15 mm thick burried directly in ground (earth pit not less than 2.25 metres deep below normal ground level) with top edge of the plate not less than 1.5 metre below normal ground level connected to copper earth strip 32X6mm size (upto 7.5 metre from ground electrode) by means of copper/steel bolts, nuts, check nuts and washers all as shown in electrical plate No.3 of MES Schedule Part-I, connected to earth test terminal block and testing on completion with and including 40mm bore light grade GI protection pipe for strip upto plingth protection, PCC pit in mix 1:3:6 type C1, with RCC 1:2:4 type B-1, 40 mm thick cover, reinforced with 6 mm dia MS bars 3Nos. both ways with lifting hook made out of 6 mm dia bar, watering arrangement with funnel and wire mesh and 20 mm bore medium grade GI watering pipe, common salt and charcoal filling, necessary excavation and earth work complete.

S and F isolator switch in existing location inreplacement old Burnt out unsv (Gang Operated device) 33 KV HT double stack with minimum 9 no of insulators with EB dolly vertical/Horizontal mounted type upto 400 amps of cap complete in all respect. Make : Jaipuria/ rastriya electricals/ pactil

Supply and Fixing leak proof and maintenance free Battry superior lead with advanced technology alloy grid with high density active material Cat Part No. OB45-12 of OKAYA equivalent of Exide, Panasonic , Amaron complete all as specified and directed.

S and F Over current relay and earth fault protection relay in existing location inreplacement old Burnt out unsv relay 33 KV HT complete in one assly.Part no ADR 141C ,18-250 VAC/DC with 1/5A CT of Ashida or equivalent of ABB/siemens/L&T/ERL complete all as specified and directed at site (as per sample).

All as per item No 63 but part No MC31AnX of L&T.or ABB/ERL/Ashida

All as per item No 63 but part No MIT113 ,Model: Genesis of EASUN REY ROLLE or ABB or L&T.or Siemens or Ashida.

VINYAK TRADERS

sunder and company