REPAIR/ MAINT OF HT DISTRIBUTION SYSTEM AND TRANSFORMERS AT AF STN BKT

M&L for servicing of HT 33KV, VCB/SF6 circuit breaker, 630 Amp by opening cleaning greasing the complete mechanical mechanism with attached numerical relays bus bar etc insulation testing setting the contact gap by measuring as required reassembling the VCB/SF6 and resetting back to its original position checking repairing the current circuit panel wiring, relay testing and calibration and provision of minor spares as required complete including operational testing all as specified and directed. Note:- 1. Testing, calibration & servicing shall be carried by a qualified trained technician, service Engineer and report shall be submitted 2. Replacement of Major parts shall be measured and paid separately.

Supply only following parts for the 33 KV VCBs complete all as per specified and directed.

Closing coil 110V DC

Tripping coil 110V DC

Spring Charging motor 220V AC

33KV porcelain bushing for VCB Top

33KV porcelain bushing for VCB bottom

LED type indicator lamp assembly

Auxililary switch

Supply and fix in repairs breather unit of transparent PVC material including its replacement for transformer of capacity up to 100 KVA.

Servicing /periodical maint of 11 KV circuit breaker SF6/LBS as detecting gas leakage pressure monitoring test, tighting all loose points, servicing & repairing closing and opening circuit & mechanism, cleaning of aux contact, including replacement if found detective, servicing of spring charging mechanism & motor having all visual parts making the circuit breaker function and mechanically testing before put on load on test position for proper charging & discharging/opening & closing including electrical test like CRM test, closing & opening time test, IR test, calibration and checking of control wiring and electronic relay time setting if required and testing tripping, closing, opening, showing fault nature complete all as specified and directed. Note:- 1.Testing, calibration & servicing shall be carried by a qualified trained technician, service Engineer and report shall be submitted. 2. Replacement of Major parts shall be measured and paid separately.

Supply only following parts for the SF6 circuit breaker & Panel of 11 KV complete all as specified and directed:-

Tripping coil/Closing coil 24V DC

control Relay 24V DC

LED type indicator lamp assembly

Vaccum Interupter for indoor VCB

spout incoming/out going side

spring charge motor 24V DC

VPIS indicater

Push switch

CT resin cast dry type indoor type of 11 KV capacity dual ratio 100-50/5 Amps

11 KV Busbar mounting indoor typy epoxy insulator with nut bolts

Material, labour and tools & plant for carrying out site test including control wiring test of transformer 33/11. 1 MVA and 33/.433KV, 100 KVA after disconnecting electric supply (taking proper shutdown) by a well experienced and educated in relevant field/reputed testing lab for the following :- 1. Insulation Test (IR/ Megger Values ) 2. BDV Value of T/F Oil. 3. Control circuit wiring test from VCB to transformer.

Dehydration /Filtration of transformer oil at site by means of centrifuging machine in order to improve di-electric strength of oil as per IS-355. Break down voltage should not be less than 50 KV complete all as specified and directed.

Supplying, filling transformer Oil of di-electric strength of 60 KV for complete replacement/topping up in transformer/isolation/voltage stabilizer including dehydration all as specified and directed by Engr-in-Charge. (Oil should be supplied in sealed barrel.)

Drain out transformer Oil for replacement all as specified and directed.

Supply & fixing of Silica gel in granular form for transformer air breather complete all as specified & directed.

S&F in repairs HT 11 KV bushing insulator, Brass metal studs nut & washers suitable for HT bush side of transformer up to 160 KVA 11/0.433KV complete all as specified and directed.

All as per item No. 11 above but 200 to 250 KVA capacity of transformer.

S & F in repair temperature gauge dial thermometer with a bimetal sensing system suitable size for transformer of any capacity.

S & F Oil level indicator glass of existing size of the transformer of any capacity including replacement of allied gaskets complete and draining out transformer oil from conservator and refilling complete all as specified and directed.

S & F in repairs HT bushing insulators brass metal studs, nuts & washers suitable for 33 KV side of up to 3.15 MVA Capacity Power Transformer complete all as specified and directed.

M& L for carrying out servicing/periodical maint of HT 11 KV panel having SF-6 Circuit breaker, 630 Amps/400Amps, 06/08 Nos (outgoing, incoming & bus coupler) after isolating electric supply by a well experienced/technical qualified having well knowledge of working on 11 KV system (self employed or through any reputed service center/manufacturer work comprising of complete cleaning of dust in the panel, checking IR valve of insulators and panels (low insulated U/S items shall be paid & measured as supply only under respective items) checking all out going & incoming connection including replacement of unserviceable of lugs if any. Note:- 1. Testing, calibration & servicing shall be carried by a qualified trained technician, service Engineer and report shall be submitted. 2. Replacement of Major parts shall be measured and paid separately.

Note for (a) to (d) :-1. Contractor will submit name of factory/workshop to GE/Engr in charge visit factory and shall be approved by GE before dispatch of transformer to specified work shop/factory.All expenditure shall be borne by contractor. 2. Taking out core,winding weight and size of winding wire/strip shall be carried out in presence of Engr-in-Charge or BOO detailed by GE,jointly assessment carried out of repair required weight & size winding wire and shall be recorded in a register. 3.Contractor will insure original (OEM) design voltage ratio after winding of transformer.

M&L rewinding of HV coils (33KV) with super enamelled DPC copper winding wire of same gauge of quantity to maintain same voltage/ ratio including insulating material required for the 33KV voltage all as specified and directed.

M&L rewinding of LV coils (33/11KV) with super enamelled DPC copper winding wire of same gauge of quantity to maintain same voltage/ ratio including insulating material required for the 33/11KV voltage all as specified and directed.

S&F in replacement of HT 11 KV bushing insulator, Brass metal studs nut & washers suitable for HT bush side of power transformer of 1000 KVA 33/11 KV complete all as specified and directed.

M&L for Disc type porcelain vitreous, brown or white insulator to suit 11 KV HT working Pressure of size 145 mm height, 255 mm dia , including one galvanised mild steel spindle, two galvanised iron washer and one GI nut complete including dismantling existing old insulator from position complete all as specified and as directed.

M&L for Pin type porcelain vitreous, brown of white insulator to suit 11 KV HT of working pressure of size 150mm height, 150mm dia, including one galvanised mild steel spindle, two galvanised iron washer and one GI nut complete including dismantling existing old insulator from position complete all as specified and as directed.

M&L for Post insulator suitable for 11 KV HT working pressure including all connected accessories including dismantling existing old insulator from position complete all as specified and as directed.

Taking down 11 KV HT Drop out fuse assembly with DO Fuse unit and Triple pole Air break switch mechanism complete all as specified and as directed.

Material & Labour for HT Drop out fuse assembly of 11 KV Current Rating of 200 Amps with 2 post insulator per phase, double stack channel type incl steel base mounting frame, MS Nuts and bolts complete all as specified and directed

Material & Labour for outdoor type Gang operated Air break switch triple pole, mechanically operated, mounted on insulator and steel frame, with operating mechanism worked from ground level with GI pipe medium grade, for current rating upto 200 Amps suitable for vertical mounting fixed type complte with 09 Nos HT insulators suitable for HT 11 KV complete all as specified and directed.

Material & Labour for Lightning Arrestor (LA) zinc oxide type complete with all fittings transmission class, discharge capacity 10 KA, suitable for 12 KV complete all as specified and directed.

Repairing / Servicing the Air break isolating switch 11 KV 200 Amps by replacing the defective major spares including provn of worn out bolts nuts etc, applying petroleum jelly on moving/ fixed contacts complete all as specified and as directed. Note :- Major spare will be measured & priced seperately under relevant item of Sch item No. 28

Supply only spares for Air break switch 11 KV, 3 Phase 200 Amp rating complete all as specified and as directed.

Male contact/moving Contact Blade

Female contact/Fix Contact Jaw

Tinned copper Flexible jumper 200A/400 A

MS jumper carrier

Back Connector plate

Supply and fixing of cable jointing kit for 11KV grade cable for Outdoor end termination heat shrinkable 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 as directed.

Supply and fixing of cable jointing kit for 11KV grade cable for Indoor end termination heat shrinkable 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 as directed.

Supply and fixing of cable jointing kit for 11KV grade cable for Straight through joint heat shrinkable 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 as directed.

M&L for graded taking out old coarse aggregate (broken stone or boulders) of any size and M&L for graded coarse aggegrate of size 40 mm for spreading and levelling at substation yard all as directed and specified.

Cutting and trimming of tree branches 3 mtr all around of any size obstructing lumination of street light and touching LT / HT Over head line including removing trimmed tree branches complete all as specified and as directed.

M&L for cleaning the surface of the MS steel tubular HT/LT pole above the ground level with 2 coats of exterior Aluminium paint over a coat of red oxide primer including 12 cm blue paint around the pole and pole number in red when painted complete all as specified and as directed.

Excavation in trenches n.exc 1.5m wide & n.exc 1.5m in depth for laying & removing of cable any sizes and getting out in hard/dense soil complete all as specified and as directed.

Returning filling in excavated earth work including spreading, levelling, watering and well ramming in layers n.exc 25cm thick in any strata complete all as specified and as directed.

Removing excavated soil to a distance n.exc 50m, depositing where directed at a level n.exc 1.5m above the starting point complete all as specified and as directed.

Supply/ Laying dry river sand in trenches for cable protection all as SSR Part I. NOTE : Punned thickness only will be measured & Paid separately.

Supply and laying precast concrete cable covers, class HV, type- I flat size 300 x 180 x 40 mm, all as specified and directed.

Supply & Laying, testing and commissioning HT 11KV earthed XLPE cable , PVC insulated, screened PVC bedded galvanised steel strip or wire armoured electric power cable, heavy duty with aluminium conductor 11000 Volts grade (earthed), 3 core 95 sqmm laid in trenches / floor / duct / fixed on poles / through GI tubing including brass cable glands complete all as specified and as directed.

M & L preparation of old painted external surfaces of HT 2 pole structures consisting of cross arms, GOD assy with pipe, DO fuse assy, clamps etc. of any description and applying one coat of Aluminium paint by mannually (Except PCC/RCC Pole) complete all as specified and as directed. Note :- The quoted rate shall deemed to be inclusive of painting all minor items such as clamps, brackets, nuts, bolts and washers which is not particularly mentioned in the stru

All as per Item No 41above but for 4 pole structure complete all as specified and as directed.

ctures Hence paid as Each Job.

M & L for single porcelain type post insulator, 33 KV with mounting spindle etc. complete all as specified and as directed.

M & L for porcelain type Pin insulator, 33 KV with mounting spindle etc. complete all as specified and as directed.

Supply and fixing Cable end termination kit cold shrinkable type outdoor type, suitable for XLPE cable 3 core, 120 sqmm, 33 KV HT supply, complete all as specified and directed.

All as per Serial No.46 above, but indoor type, suitable for XLPE cable, 3 core, 120 sqmm, 33 KV HT supply complete all as specified and directed

Supply only HT type Insulating Tape non heat shrinkable type of 38 mm width and 10 Mtr length complete all as specified and directed

Removing grass and bushes including its roots growing at Substation yard and keep the sub station yard neat and clean complete all as specified and as directed. Note:- one length measured in six months.

Supply & Laying, testing and commissioning HT 33 KV XLPE cable, PVC insulated, screened PVC bedded galvanised steel strip or wire armoured electric power cable, heavy duty with aluminium conductor 33000 Volts grade (earthed), 3 core 120 sqmm laid in trenches / floor / duct / fixed on poles / through GI tubing including brass cable glands complete all as specified and directed

M&L for repairing and rewinding of power transformer 33/11 KV 1000 KVA Schneider make as under (a) disconnecting electric supply,earthing and control cable from both HV & LV side of transformer 33/11 KV,1000 KVA outdoor type make Schneider taking out from plinth,loading and transporting to workshop/factory approved for the repairing rewinding of transformer by the state/MSME registered having facility to test all the required for power transformer and carring out repairing/rewinding of 33/11KV transformer (b) Decaning/drain out transformer oil,opening of top cover,conserve of tanks bushing etc of transformer,taking out core and winding (both) LV&HV safety to avoid damage of cores,weighing of winding wire/strip etc all as specified and as directed. (c) M & L for assembling HV & LV coils and cores,baking at appropriate temperature to obtain required insulation resistance value and putting in tank connecting coils with terminals re-fxing top cover (filing th transformer oil to be paid under respective items) carried out hgh voltage,high frequency test and other insulation test (d) Transporting back to site, Reinstallation commissioning connecting all HV,LV & control cables and testing on load all as specified and directed.

M&L for primary injection test of 11 KV current transformer and checking the electrical circuits for fault condition and proper functioning and also submitting the test report all as specified and directed by engr in charge.

M&L for primary injection test of 11 KV or 33 KV Potential transformer by applying low voltage on HV Side including testing of secondary wiring for its healthiness all as specified and directed.

M & L preparation of old painted surfaces of HT 33 including ring men/11 KV Feeder MRS at AF Stn BKT consisting of Steel poles / ISMBs, cross arms, GOD pipe, clamps etc. having of any description and applying one coat of Aluminium paint by manually (including structure) complete all as specified and as directed. The approx particulars are as under :- (a) ISMB 200 X 100 x 6 mm 12 mtr height as pole - 4 Nos (b) ISMB 200 X 100 x 6 mm 4 mtr height as pole - 4 Nos (c) ISMB 200 X 100 x 6 mm 2.5 to 3.5 mtr height as pole - 100 Nos (d) Angle Iron cross support 75 x 40 x 6 mm - 80 RM (e) MS Flat 50 x 4 mm - 40 Rm (f) Channels of size 75 x 75 x 6 mm - 170 RM (g) Channels of size 100 x 50 x 6 mm - 250 RM (h) Channels of size 150 x 50 x 6 mm -200 RMr Note:- 1. This rate inclusive of painting all minor items such as clamps, brackets, nuts, bolts and washers which is not particularly mentioned in this item.

Supply only electrical rubber hand gloves suitable on working pressure of 11 KV all as specified and directed.

Supply only electrical rubber hand gloves suitable on working pressure of 33 KV all as specified and directed.

M&L for carrying out primary injection test of 33 KV current transformer metering & protection and setting at proper ratio with relays and checking the electrical circuits for fault condition and proper functioning and also submitting the test report all as specified and directed by engr in charge.

Material and labour for Shifting of transformer after disconnecting the elect supply carefully from HT and LT side, from one location to another location as decided, incl testing and commissioning upto 400 KVA, 11/ 0.433 KVr, complete all specified and directed by Engr-in-Charge. Note:- Transportation charges included in quoted rate

M&L PCC type D2 1:4:8 (40 mm graded stone aggregate) as in foundation complete all as specified and directed.

M&L for PCC 1:3:6 type C-2 using 40 mm graded stone aggregate as in foundation filling and mass concrete and copping etc complete all as specified & directed.

Detection of pin point fault in HT cable (burried in ground/under road/path up to depth of 1.5 m) by cable fault locating machine comprising impulse generator,acoustic fault locator and reflectometer (laptop based) complete all as specified and as directed by Engr-in-Charge. Notes- 1. Cable fault locating machine to be arranged at site with in 12 hrs after intimation 2. Earth work will be measured seperatly. 3. Cost of transpotation in unit rate is deemed to be included. Location:- AF Stn BKT

Dismantling and taking down including Material & Labour for steel cross arms, angles, bracing supports, clamps and back plates fabricated from structual steel sections including nut bolts washers welding bending cold or hot drilling hole for bolts in any shapes or size as indicated or directed and inclusive of one primer coat and one finishing coat of silver paint complete all as specified and directed

All as per Item No.62 above but 200 to 250 KVA capacity of transformer all as specified and directed.