REPAIR AND MAINT OF HT 33 KV AND 11 KV SUBSTATIONS EQUIPMENTS TRANSFORMERS SERVO STABILIZERS AND HT UG OH LINES AND OTHER CONNECTED WORKS AT 7 AFH KANPUR

Excavating in trenches, n exc 1.5 m wide and n exc 1.5 m in depth; for foundation, etc. or for shafts, wells, cesspits,manholes, pier holes, for laying of UG Cable etc. n exc 10 sq m on plan and n exc 1.5 m in depth and getting out in soft/loose soil complete all as specified & directed.

Returning filling in including spreading leveling watering and well ramming in layers not exceeding 25 cm in soft/loose soil complete all as specified & directed.

Removing excavated material n.exc. 50m and depositing where directed at a level n.exc 1.5 m above starting point complete all as specified & directed.

Material and labour for sand cushioning with a layer dry clean Ganga river of sand 8 cm thick before laying of cable and 15 cm thick after laying of cable in trenches complete all as specified & directed. Note: Punned thickness 18 cm shall only be measured.

M&L for un-renforcement precast concrete cable cover HVP type 1, flat of size 300x180x40mm complete all as specified & directed.

Supply ,laying and testing in replacement of unserviceable XLPE insulated , screened, PVC bedded galvanised steel strip or wire armoured HT electric power cable heavy duty with aluminium conductor 11000 volts grade cross sectional 150 sq mm 3 core, laid in trenches/ducts /encased in GI pipe /fixed to pole including taking out of over head conductor/existing unserviceable cable complete all as specified & directed.

Supply, laying and testing in replacement of unserviceable XLPE insulated , screened, PVC bedded galvanised steel strip or wire armoured HT electric power cable heavy duty with aluminium conductor 11000 volts grade cross sectional 240 sq mm 3 core, laid in trenches/ducts /encased in GI pipe /fixed to pole including taking out of over head conductor/existing unserviceable cable complete all as specified & directed.

Supply ,laying and testing in replacement of unserviceable XLPE insulated , screened, PVC bedded galvanised steel strip or wire armoured HT electric power cable heavy duty with aluminium conductor 33000 volts grade cross sectional 300 sq mm 3 core, laid in trenches/ducts /encased in GI pipe /fixed to pole including taking out of over head conductor/existing unserviceable cable complete all as specified & directed.

Supply & laying HT XLPE Insulated screened aluminium stranded conductor cable PVC bedded galvanized strip armoured heavy duty 11 KV cross sectional area 120 Sqmm 3 Core conforming to IS 7098 lead in duct/trenches/supporting with pole /passing through pipe complete all as specified and directed.

S&F in replacement of in trenches /fixed on pole / wall GI pipe of light grade,IS-1239 marked with required size of flat iron clamp complete with bolts, nuts and washers of sizes 100 mm bore for cable protection including taking down of existing complete all as specified and directed.

M&L for trimming / cutting and removal /uprouting of unwanted trees branches / bushes, small trees including surface dressing and leveling by surface excavation wherever required below / near overhead line including spreading of anti vegitation chemical from Chandmari substation to 7 AF Hospital substation and inside Hospital area/Md accn complete all as specified and directed.

Supply and fixing in replacement of DO Fuse element of current rating up to 100 Amps suitable for 33 & 11 KV complete all as specified and directed.

M&L for two coats of synthetic enamel painting on existing colour of Transformers 2 to 3.15 MVA as per color code after preparation of old surface including writing of SM/MES No. complete all as specified & directed.

S&F in replacement of triple pole Gang Operated Air Break Switch mechanically operated mounted on insulator and steel frame with operating machanism worked from ground level for current rating upto 400 Amps suitable for working voltage 33 KV complete with nut bolt washer operating pipe handle with locking arrangement complete all as specified & directed.

S&F in replacement of triple pole Gang Operated Air Break Switch mechanically operated mounted on insulator and steel frame with operating machanism worked from ground level for current rating upto 200 Amps suitable for working voltage 11 KV complete all as specified & directed.

M&L for Lightening arrestor expulsion type complete with all fittings, transmissions class, discharge capacity 65 kilo amps suitable for 33000 volts and mounted on existing structure including replacement all clamp, nuts, bolts and washer etc complete all as specified & directed.

M& L for in replacement of earthing complete with galvanized steel earth plate electrode 60cm x60 cm x6.0 mm thick buried directly in ground (earth pit not less than 2.25 Mtrs deep below ground level) with top edge of the plate not less than 1.50 Mtr below normal ground level connected to galvanized earth lead strip 32x6mm dia by means of bolts, nuts, check nuts and washers of galvanized iron or steel all as shown in electrical plate No.3 connected to ear thing test point all as specified or indicated including testing on completion including PCC pit in (1:3:6) type C-2 cement concrete .RCC 1:2:4 Mix type B reinforced with 6mm dia MS bars @ 150mm RCC cover slab 40mm thick with two no’s fitting handle, GI pipe 20mm dia light grade with funnel & wire mesh for watering and 40mm dia light grade GI pipe for earth strip 32x6mm protection etc Earthing result not more then 2 ohm and test result duly signed complete all as specified & directed.

M& L for Earth continuity conductor or main earthing lead fixed to wall on batten or recess or chases or buried in ground or drawn in conduit/pipe or fixed to poles or any other indicated situation for loop earthing etc. as required 32x6 mm galvanised iron strip complete all as specified & directed.

M&L for Chemical earthing complete with copper earth plate electrode 90cm x 60cm x 5mm, buried directly in ground( earth pit not less than 2.25 mtr deep below ground level) with top edge of the plate not less than 1.5m below ground level connected to and including copper strip of 32x6 mm protected with GI light grade pipe 40mm dia for earth electrode upto test point or upto 7.5 mtr whichever is less by means of bolts, nuts, check nuts and washers of copper washer all shown in electrical plate No 3 (of SSR part-I) connected to earthing test point all as specified or indicated including provision of necessary excavation and earth work of any type of soil, PCC pit , RCC cover, 50mm thick with 8mm dia TMT bar @ 100cm c/c both way , 20mm bore light grade watering pipe, water funnel, 40mm bore GI medium grade protection pipe, Bentinite powder, comman salt, charcoal dust, returning filling, in of soil, removal of soil to a distance of not exceeding of 50 mtr etc, including testing on completion complete all as specified & directed. Note :- (i) Earth lead beyond 7.5 mtr from electrode to earth terminal point/main switch & GI pipe light grade 40mm dia for protection against mechanical damage to lead shall be measured separately. (ii) On testing after completion if desired earth resistance less than 1 Ohm is not obtained, the earthing will be redone at no extra cost.

Supply and fixing/laying of copper strip of size 32x6 mm as earth continuity conductor provided in between earth test point terminal and upto the equipment incl nuts, bolts and washers complete all as specified and directed.

M & L to carryout the repair/servicing/overhauling and calibration HT VCB (with SF-6 Gas filled) panel by highly skilled mechanic / specialist including dismantling of operative mechanism parts, spring motor mechanism, well cleaning with petrol and CRC-226, replacement of unserviceable parts/accessories, replacement of burnt wiring as existing & rewiring the same,oiling and greasing of moving parts, checking and well cleaning of insulators and re-assembling of operating mechanism after complete overhauling refilling of SF-6 Gas as desired including captive synthetic current injection test as per IS 14658 : 1999 or IS 13516 : 1993 to check to tripping mechanism of HT VCB 11 KV, 400 Amps complete all as specified and directed following capacities : - (a) VCB (with SF-6 Gas filled) 11 KV 400 Amps indoor type (Incoming) NOTE : (i) All repair/servicing/overhauling and calibration work shall be carried out by the manufacturers authorised representative/OEM. (ii) Cost of spares shall be measured and paid separately under respective item of Schedule 'A':-

M & L to carryout the repair/servicing/overhauling and calibration HT VCB (with SF-6 Gas filled) panel by highly skilled mechanic / specialist including dismantling of operative mechanism parts, spring motor mechanism, well cleaning with petrol and CRC-226, replacement of unserviceable parts/accessories, replacement of burnt wiring as existing & rewiring the same,oiling and greasing of moving parts, checking and well cleaning of insulators and re-assembling of operating mechanism after complete overhauling refilling of SF-6 Gas as desired including captive synthetic current injection test as per IS 14658 : 1999 or IS 13516 : 1993 to check to tripping mechanism of HT VCB 11 KV, 400 Amps complete all as specified and directed following capacities : - (b) VCB (with SF-6 Gas filled) 11 KV 400 Amps indoor type (Out going ) NOTE : (i) All repair/servicing/overhauling and calibration work shall be carried out by the manufacturers authorised representative/OEM. (ii) Cost of spares shall be measured and paid separately under respective item of Schedule 'A':-

Supply of following spares for 11 KV VCB

(a) Opening coil Y 1-24 V DC

(b) Closing coil Y 2-24 V DC

(c) Close push button

(d) Open push button

(e) Motor and gear assembly

(f) 2 PA mechanism with hex rod

(g) Switch element S 826E/L

(h) L Shape ON/OFF lever

(j) Linkage between K & A

(k) Insulating washer K-A mech interlock

(l) Indicating lamp LED type

(m) Push Button plate

(n) On/Off indicator (Mech)

(o) Operating Shaft

(p) Z lever

(q) Relay Coil

(r) Trip Coil

M&L for carrying overhauling / servicing of 33 KV Outdoor type VCB by adjustment of spring operated control mechanism assembly with checking and adjustment of stops, opening springs and shock absorber, oiling/greasing of all moving parts with recommended lubricant for smooth functioning from local and remote panel complete all as specified and directed. NOTE : All repair/servicing/overhauling and calibration work shall be carried out by the manufacturers authorised representative/OEM & Calibration test report to be submitted indicating before & after settings duly signed by contractor & Engg -in-charge.

Calibration and testing of VCB 33 KV remote control panel relays and checking & cleaning/decarbonising its moving & fixed contacts and ensure physical healthiness with visual check for healthy tripping of over current and earth fault, adjust tripping time, flag setting, ratio setting, instantaneous time setting etc as per installed capacity of transformer to be saved at maximum short circuit current with considering percentage impedance of transformer with artifical current injunction on primary side with current injunction machine and checking physical tripping verification of WTI and OTL, oil low level alarm bucholz alarm and trip, ensuring smooth functioning of VCB from local and remote switch complete all as specified and directed. NOTE : All repair/servicing/overhauling and calibration work shall be carried out by the manufacturers authorised representative/OEM.

Supply and laying in replacement of synthetic Rubber insulated mats 2.5 mm thick for voltage upto 11 kv for electrical purpose as per IS 15652-2006, (superseding IS 5424) suitable for electrical shock safety of sizes 2m x 1m complete all as specified and directed.

S& F in replacement insulator pin type porcelain vitreous white brown or green including galvanized MS spindle two GI Washers and one GI Nut 150 mm height 150 mm dia for 11000 volts grade complete all as specified and directed .

M & L for hardcore of broken stone or boulders gauge of n.exc 63mm , deposited, spread and levelled in layers n exc. 15cm thick, watered and remmed to a true surface, after cleaning and leveling of existing surface complete all as specified and directed.

S&F in repairs cable jointing kit for 33 KV (Earthed) grade cable for outdoor termination heat shrink type end joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 300 sqmm complete all as specified and directed.

Supply, jointing and testing in replacement of outdoor type cable end termination joint ,heat shrinkable) suitable for aluminium conductor cable of size 240 Sqmm to 300 Sqmm x 3 Core, 11000 Volts grade complete all as specified and directed.

Supply, jointing and testing in replacement of outdoor type cable end termination joint, heat shrinkable) suitable for aluminium conductor cable of size 120 Sqmm to 185 Sqmm x 3 Core, 11000 Volts grade complete all as specified and directed.

Supply, jointing and testing in replacement of outdoor type cable end termination joint ,heat shrinkable) suitable for aluminium conductor cable of size 95 Sqmm x 3 Core, 11000 Volts grade complete all as specified and directed.

Supply jointing and testing in replacement of indoor type cable end termination joint (heat shrinkable) suitable for aluminium conductor cable of size 240 Sqmm to 300 Sqmm x 3 Core, 11000 Volts grade complete all as specified and directed.

Supply jointing and testing in replacement of indoor type cable end termination joint (heat shrinkable) suitable for aluminium conductor cable of size 120 Sqmm to 185 Sqmm x 3 Core, 11000 Volts grade complete all as specified and directed.

Supply jointing and testing in replacement of indoor type cable end termination joint (heat shrinkable) suitable for aluminium conductor cable of size 95 Sqmm x 3 Core, 11000 Volts grade complete all as specified and directed.

Supply jointing and testing in replacement of straight through joint (heat shrinkable) suitable for aluminium conductor cable of size 240 sqmm to 400 sqmm x 3 Core 11000 Volts grade complete all as specified and directed.

Supply jointing and testing in replacement of straight through joint (heat shrinkable) suitable for aluminium conductor cable of size 120 sqmm to 185 sqmm x 3 Core, 11000 Volts grade complete all as specified and directed.

Supply jointing and testing in replacement of straight through joint (heat shrinkable) suitable for aluminium conductor cable of size 95 sqmm x 3 Core, 11000 Volts grade complete all as specified and directed.

Cleaning and preparation of old painted surface of HT six pole structure complete and painting with one coat of aluminium paint including channels, cross arms and making black & white strips with synthetic enamelled paint of 30cm height, each alternative strip upto 1.5 mtr height and writing pole numbers with yellow synthetic enamelled paint after making circular base with black synthetic enamelled paint and applying two coats of white wash on PCC coping complete all as specified and directed.

Maintinance and complete overhauling of 11 KV VCB of existing make /type /mode /capacity including diassembling of operating mechanism parts well cleaning with petrol and CRC-226 and replacing unserviceable spare parts reassembling of parts including well cleaning the complete panel board,main busbar,decarbonizing all joints busbar CTS,PTS, spouts metal parts and making VCB perfect operating in manual and electric mode and calibration & checking of tripping system of 11 KV circuit breaker through IDMT over current and earth fault relay at plug setting infented inservice by primary current injection method to ensure proper function of trip coil control circuit etc. during fault condition setting by expert from authorised agency of state electricity board including submission of calibration certificate complete all as specified and directed.Note:- Spare parts required to make VCB functional will be measure and paid separately under respective items.

Supply Only of following spare parts of HT 11 KV VCB all as directed.

a) Shunt Tripping coil

b) Volt meter 0 to 15 KV digital type with complete wiring

c) Ammeter 0/20 to 100/200 Amp digital type with complete wiring

d) Breaker control switch 10A 660V

e) Electronic hooter

f) Push botton Actuators with carrier & contact element- non -illuminated flush spring return push button with 1 NO blockl, 22mm dia Red colour

g) Push botton Actuators with carrier & contact element- non -illuminated flush spring return push button with 1 NC blockl, 22mm dia Green colour.

h) Integrated LED pilot lamp suitable for operating at ( AC/DC) Red colour

j) Integrated LED pilot lamp suitable for operating at ( AC/DC) yellow colour

k) Integrated LED pilot lamp suitable for operating at ( AC/DC) blue colour

l) Integrated LED pilot lamp suitable for operating at ( AC/DC) green colour

m) Toggle switch assembly

n) Fuse holders for british pattern fuse links as per IS,13703 2A

o) Fuse holders for british pattern fuse links as per IS,13703 5A

p) TNC control switch

q) Panel Heater Switch

r) Closing coil

s) Vaccum interupter for indoor VCB

t) Spout incomming side

u) Spout outgoing side

v) VCB operating Handle

w) Backelite Seat

S&F in repair strip type heater 40/60 watt approx 4"/6" in length complete all as specified and directed.

Supply, installation,testing and commisioning in replacement of control/charging motor for 11 KV, VCB type as per existing make & model complete all as specified and directed.

Supply and fixing,testing,commisioning in replacement of Numerical earth fault and over current protection relay 33 KV with Aux supply of 20 to 110V AC/DC with 2 NO+2NC contact of existing make including neccesary wiring complete all as specified and directed. Note: All T&P& accesories for testing is carried out by contractor and no extra payment to be done for Testing.

Supply and fixing,testing,commisioning in replacement of Numerical earth fault and over current protection relay 11 KV with Aux supply of 20 to 110V AC/DC with 2 NO+2NC contact of existing make & model including neccesary wiring complete all as specified and directed. Note: All T&P& accesories for testing is carried out by contractor and no extra payment to be done for Testing.

Maintenance of 11 KV Main Power House comprising of checking of HT LT terminals,replacement of rusted nut bolts washer,cleaning of Panels, S/stn Rooms, painting the yard Gete,shutters, Room Gates with one coat of synthetic enamel paint as required and writing the designation of equipments in english alphabets/letters as specified and mainly the following:- (a) Step down Transformer 500/400 KVA, 11KV / 415 Volt - 05 Nos. (b) Step down Transformer 160 KVA, 11KV / 415 Volt - 01 Nos.frc ed (c) 11 KV indoor VCB, up to 630 Amps, 250 MVA with bus coupler - 07 Nos. (d) LT Control panel of various capacities - 05 Nos. (e) Voltage stabilizer, 3 phase, indoor, 415 volt, 500 KVA - 02 Nos. (f) Iron Gate -02 Nos (g) All remaining structure misc-01 lot (h) Rolling shutters =04 Nos

Labour & transportation for shifting of 11/0.433 KV transformer from one location to another location with in 7 AF Hospital area and making connections and testing complete all as specified and directed. Note : Safe transportation of transformer for shifting is responsibility of contractor.

Supply and fixing in replacement of PCC cable route markers with galvanised iron HT Cable Route marker having embossing of HT Cable supporting MS angle of 75 cm long, for HT cable route marking duly embedded in and incl PCC (1:3:6) foundation up to 30 cm incl excavation and earth work.

Maintenance of 6 pole structure by disconnecting all incoming and out going joint and UG cable end terminal joint from GOD etc and rewinding/renewal of all joint with fresh joint & jumper cable with connector,nut bolts washer,HT taping including treatment of GOD contacts with conducting jelly complete all as specified and as directed.

Supply and Fix HT insulation tapes ISI Marked for terminating high voltage cables for insulation sealing of connection of wire and cable for bus bar insulation, transformer terminal insulation etc complete all as specified and directed.

Supply and Fix HT 11 KV Post insulators fixed on HT Busbar chambers with nut bolt washers as existing size complete all as specified and directed.

S&F in replacement pin type, porcelain, vitreous, white, brown or green insulator including one galvanised mild steel spindle, two galvanised iron washers and one galvanised iron nut, 150mm height, 150mm dia for 33000 volts grade complete all as specified and directed.

Taking down top cover and refixing after proper cleaning,minor repairs of any, greasing and oiling of ball bearings,spring and runners complete of steel rolling shutters of area exceeding 5 sqm but n.exc 10 sqm complete all as specified and directed.

Dehydration,centrifusing & filtration of transformer oil of 3.15 MVA 33/11 KV transformer by mobile centrifusing & dehydation machine minimum capacity 1000 Ltrs/hours till the desired value of inslation of transformer oil electric strength as 70 KV at a gap 2.5 mm is obtained complete all as specified and directed. Note : Test Report to be submitted for BDV value before & after filtration of transformer.

Dehydration,centrifusing & filtration of transformer oil of 2 MVA 33/11 KV transformer by mobile centrifusing & dehydation machine minimum capacity 1000 Ltrs/hours till the desired value of inslation of transformer oil electric strength as 70 KV at a gap 2.5 mm is obtained complete all as specified and directed. Note : Test Report to be submitted for BDV value before & after filtration of transformer.

Supply & Fixing in replacement of Battery Bank of 15 Battery with 2 volt each with all connected accessories all batteries to be placed on frame along with float cum Boost charger suitable for 30 volt with all connected leads complete all as specified and directed.

Repair to earth pit & earth pit cover of any type and size by using PCC 1:2:4 and plastering in CM 1:3 complete including excavation,returning filling and removal etc complete all as specified and directed.

Supply and fixing porcelain transformer bushing with complete stud with brass nut bolt washers complete of 36 KV IS:3347 suitable for 33/11 KV, 3.15/2 MVA transformer complete all as specified and directed.

Supply, installation, testing and commissioning of the indoor type current transformer HT 11 KV ratio 50/25/5+5 of input VA-15 type KCT-02 conforming to IS-2705 Part-I of 1981, 50 HZ, HSV-12 KV accuracy limit factor ACP-10 insulation level class-1, 28/75 short time terminal current and hrs duration 13.1 KA for 3 second suitable for SF-6/VCB of existing capacity complete all as specified and directed.

Supply, installation, testing and commissioning of the indoor typee 11 KV PT of ratio 11 KV/rt 3/110/vt 3/110 v/rt 3 class 0.5-3, burden 50 VA -50 VA, insulation level 28/75 KV, voltage factor 1.2 Cont and 1.9 for 30 sec, conforming to IS 3156 complete all as specified and directed.

Supply installation and testing of outdoor type (CTs) 33 KV current transformer -03 Nos Dry Type Polycrete having CT ratio 100/50/5+5 for connecting 33 KV side of Transformer bushing class 5P 15 VA burden suitable for protection, metering and different operation complete all as specified and directed.

Supply, installation, testing and commissioning of the outdoor typee 33 KV PT as existing at site conforming to IS 2705 complete all as specified and directed.

Supply and fix in replacement copper bus bar strips in the transformer studs for cable connections of exsiting size and capacity including necessary fabrication work with fresh nut bolts washers complete all as specified and directed.

M&L for in replacement of air breather assembly complete with fresh blue colour silica Gel suitable for power transformer of capacity 3.15/2 MVA complete all as specified and directed.

M&L for in replacement of OTI Gauge suitable for power transformer of capacity 3.15/2 MVA complete all as specified and directed.

M&L for in replacement of WTI Gauge suitable for power transformer of capacity 3.15/2 MVA complete all as specified and directed.

Supply, laying & testing in replacement of PVC insulated, PVC sheathed cable galvanised steel strip or wire armoured, electric control cables (Heavy duty) with stranded copper conductor of size 1.5 Sqmm 4 core complete all as specified and directed.

Supply, laying & testing in replacement of PVC insulated, PVC sheathed cable galvanised steel strip or wire armoured, electric control cables (Heavy duty) with stranded copper conductor of size 1.5 Sqmm 8 core complete all as specified and directed.

Servicing & Maintenance of existing 33 KV MRS switch Yard at Chandmari S/Stn Comprising of 33 KV GODs, Air Break Switchs, Insulators, CTs, PTs, Lightening arrestors, 33/11 KV transformer = 2 Nos, tightening of conductors, replacement of joints if any, checking of transformer bushings, studs of etc duly applying petroleum jelly after cleaning the contact from the rust and deposited carbon including tightening of all the loose connections making good for operation including replacement of burnt,rusted nut bolts as existing including cleaning and preparation of old painted surface of HT Gantry system complete pertains to 7 AF Hospital HT suply system complete all as specified and directed.

Supply and fixing in replacement of HT 11 KV busbar outdoor type weather and vermin proof factory fabricated CPRI approved duly painted with two coat of enamelled paint, pedestal type made out of mild steel sheet 3.15 mm thick, factory made using angle iron 40 mm x 40 mm x 6 mm and 500 mm high, front opening double door shutter weather proof, rust proof, dust proof with provision of rubber gasket and locking arrangement including HT bush, insulator & busbar (80mmx6 mm) with colour code - 03 Nos and making connection with suitable size of thimbles, nuts, bolts and washers etc incl necessary earth work to fix 60 cm above ground level complete all as specified and directed.

Cutting/ trimming of tree branches up to 1.5 mtr distance on both sides of HT over head line and hanging over HT over head line including collection and depositing the retrieved timber at a place complete all as specified and directed. Note :- 1. Distance between two poles consider as one span. 2. The contractor must ensure that there must be no damege to HT conductor/pole because of falling of tree branches. If any damage occure due to this, the repair will be done by the contractor at his own and no extra payment will be paid to contractor in this effect.

M&L for detection of HT/LT fault by using fault locator machine highering from civil authority complete all as specified and directed. Note :- In one length of cable from Panel/DB/Transformer to Panel/Transformer all faults considered as single job complete all as specified and directed.

Supply and fixing in replacement of danger notice plate of 1.6mm thick, MS sheet, vitreous enamelled white, with letters, figuers and conventional skull and bones in signal red colour and fixed with MS clamps made out of flat iron 25x3 mm, nuts-bolts, of approved size for HT 25x20 cm complete all as specified and directed.

S&F heat shrink LT end joints of size 120 sqmm to 150 sqmm complete all as specified and directed.

S&F heat shrink LT end joints of size 185 sqmm to 240 sqmm complete all as specified and directed.

S&F heat shrink LT end joints of size 300 sqmm to 400 sqmm complete all as specified and directed.

S&F heat shrink LT straight through joints of size 120 sqmm to 150 sqmm complete all as specified and directed.

S&F heat shrink LT straight through joints of size 185 sqmm to 240 sqmm complete all as specified and directed.

S&F heat shrink LT straight through joints of size 300 sqmm to 400 sqmm complete all as specified and directed.

Complete over hauling, commissioning and testing of transformer of 33/11 KV step down, out door type of capacity 3.15/2 MVA of comprising the following work services at Chandmari S/Stn :- (a) Disconnection of cable termination of HV & LV ends. (b) Opening of top cover by removing nuts, bolts and all mounting accessories and conservator tanks for visual inspection. (c) Checking of HV/LV insulators including internal inspection (d) Replacement of corroded nuts/bolts with double washers, burned lugs, etc by new one (e) Servicing of tap changing gears by cleaning and polishing tapping contact points. (f) Removing, cleaning, polishing of bushings and studs of both HV/LV side by using soft cotton cloth including checking for cracking and refixing the same. (g) Refixing all cable terminals HV & LV sides and transformer top cover, conservator tank and other fitments in position. (h) Filling of new silica gel in breather. (j) Connecting HV & LV side with existing incoming and outgoing cables including re-connection of earth strip/lead. (k) HV side cable connection shall be made with new HV tape & M Seal Monoplast as required at site. (l) All marshalling boxes to be cleaned from inside. (m) All the terminal connection of control and relay wiring to be checked and tighten. (n) Examine the rollers carefully includes greasing them properly. (o) Checking of earthing connection and tightening nuts& bolts with ensuring the earthing system working properly. (p) Buchloz relays where ever mounted on the transformers shall also be checked and made serviceable. (q) All safety system & calibration of OTI,WTI shall also checked & repaired.

Complete over hauling, commissioning and testing of transformer of 11KV / 415 Volt, step down, out door/indoor type of capacity up to 500 KVA of comprising the following work services at 7 AFH Area :- (a) Disconnection of cable termination of HV & LV ends. (b) Opening of top cover by removing nuts, bolts and all mounting accessories and conservator tanks for visual inspection. (c) Checking of HV/LV insulators including internal inspection (d) Replacement of corroded nuts/bolts with double washers, burned lugs, etc by new one (e) Servicing of tap changing gears by cleaning and polishing tapping contact points. (f) Removing, cleaning, polishing of bushings and studs of both HV/LV side by using soft cotton cloth including checking for cracking and refixing the same. (g) Refixing all cable terminals HV & LV sides and transformer top cover, conservator tank and other fitments in position. (h) Filling of new silica gel in breather. (j) Connecting HV & LV side with existing incoming and outgoing cables including re-connection of earth strip/lead. (k) HV side cable connection shall be made with new HV tape & M Seal Monoplast as required at site. (l) All marshalling boxes to be cleaned from inside. (m) All the terminal connection of control and relay wiring to be checked and tighten. (n) Examine the rollers carefully includes greasing them properly. (o) Checking of earthing connection and tightening nuts& bolts with ensuring the earthing system working properly. (p) Buchloz relays shall also be checked and made serviceable.

M&L for filtration/dehydration of transformer oil with stream line filtration plant at a temp 60-70 deg. C and achieving di electric strength of not less than 50 KV for 1 minute in 4 mm gap as per IS 335 of 1983 complete all as specified and directed. Note : Test report before & after dehydration to be signed by Contractor & Engr-in-charge.

Supply and fixing in replacement of air breather assembly with silica gel of superior quality for air breather of transformer complete all as specified and as directed.

M&L for rewinding of transformer with supper enameled double paper covered copper wire/ strip for HV/LV winding having existing size and giving proper insulation and de-moisturizing before assembling the winding core and including primary testing, ratio testing, no load testing, core insulation testing including taking out unserviceable winding wire complete all as specified and directed.

Replacement of transformer oil temperature gauge, range shall be 0 to 120 degree centigrade as per existing type and model complete all as specified and as directed.

Supply, insatallation, testing and commissioning in replacement of isolator 33KV, outdoor type duty isolator, hand operated triple pole, off circuit, fault making, horizontal mounted,18 insulator type, centre post rotating type, double stac, 33 KV, 400 Amps, as all as specified in particular specification and as per IS-9921 including taking down old unserviceable isolator complete all as specified and as directed.

M&L for in replacement of 33 KV/11KV GOD vertical type double stacked triple pole mechanically operated mounted on insulator and steel frame with operating machanism worked from ground level for current rating upto 200 Amps suitable for working voltage 33 KV complete with nut bolt washer operating pipe handle with locking arrangement complete all as specified and directed.

Supply and fixing in replacement of porcelain transformer bushing with complete stud with brass nut bolt washers complete of 36 KV IS:3347 suitable for 33/11 KV, 3.15/2 MVA transformer complete all as specified and directed.

Removal of old painted surface of Transformer complete upto 500 KVA capacity by scraping with emry paper and cleaning by thinner and finishing the surface smooth for new painting of two coat of spray painting with synethetic enamal paint complete including writing of SM/MES No and colour code complete all as specified and directed.

M&L for one coat of aluminium painting with synthetic enamel paint of all MS Channels structure of CT , PT, Islotaor switch , LA and DO fuse etc as per color code after preparation of old surface of 33 KV out door Switch yard at take over Point complete all as specified and directed.

Supply and Fix HT insulation tapes self adhesve type of length 9 mtr ISI Marked for terminating high voltage cables for insulation sealing of connection of wire and cable for bus bar insulation, transformer terminal insulation etc complete all as specified and directed.

Repair to earth pit & earth pit cover of any type and size by using PCC 1:2:4 and plastering in CM 1:3 complete including excavation, returning filling and removal etc complete all as specified and directed.

Material and labour for replacement of old rubber insulating mat of size 2Mx1MX25 MM Thick for HT equiment ISI Marked complete all as specified and directed.

Supply and fixing in replacement of cable route markers made of galvanised iron with embossing of HT Cable supporting MS angle of 75 cm long, for HT cable route marking duly embedded in and incl PCC (1:3:6) foundation up to 30 cm incl excavation and earth work complete all as specified and directed.

Draining out Servo Voltage Stabilizer oil of capacity 500 KVA and keeping safe for re-use, dismantling various parts of Servo Voltage stabilizer etc, openig of top cover of Servo voltage stabilizer, lifting and taking out carefully winding core assembly with the suitable chain pully arrangement for repair, cleaning of sludge including washing down with clean oil complete all as specified and directed.

Taking out old unserviceable winding wire of Servo Voltage Stabilizer including removing of unserviceable insulating materials from core assembly of stabilizer with and including M&L for rewinding with super enameled copper wire double paper insulated of existing gauge copper wire including de-moisturising/ovening winding core assembly of capacity 500 KVA Servo Voltage Stabilizer, re-fixing the winding core assembly and other parts of Servo voltage stabilizer including testing i.e. ratio test, insulation test etc. and re-connecting of incoming and outgoing connection etc. complete all as specified and directed.

M&L for insulating material requried for Servo voltage stabilizer core, winding, providing cotton tapes, spacers,rewiring of old burnt control wiring with suitable gauge wire as existing etc complete all as specified and directed.

S&F of Electronic cards suitable for 500 KVA stablizer complete all as specified and directed.

S&F of Servo motor of 10 Kg. cm torque suitable for 500 KVA stablizer complete all as specified and directed.

S & F of Micro switch suitable for 500 KVA stabilizer complete all as specified and directed.

S & F of R.C network for motor suitable for 500 KVA stabilizer complete all as specified and directed.

S & F of Carbon bushes suitable for 500 KVA stablizer complete all as specified and directed.

S & F of dimmer as per existing capacity suitable for 500 KVA stabilizer complete all as specified and directed.

S & F of Gears as per existing capacity suitable for 500 KVA stabilizer complete all as specified and directed.

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