CWE(U)/D-14/2022-23

Amount

Material & labour for repair /overhauling of OLTC ( On load tap changer ) of 33KV/11KV Power transformer of capacities 16/20 MVA at site by carried out following work of BBL make :- (a) Opening of top plate of OLTC. (b) Draining out of transformers oil from the OLTC. (c) Stoping of leakage of oil from main shaft of OLTC including replacement of oil seal and all gasket of OLTC. (d) Checking /servicing of moving and fixed contact of OLTC and resistence test of contact. (e) Flushing of OLTC assembly with hot new oil and removing of sludge. (f) Filling of new transformer oil in OLTC . (g) Tightening of all tapping leads and connections. (h) Refixing of top plate of OLTC in original position after overhauling. (i) Electrical testing of manual/auto operation of OLTC. Note :- Transformer oil as required shall be measured and paid separately under item No 70 here-in -before as supply only.

Material & labour for repair /overhauling of OLTC ( On load tap changer )/diverter switch of 33KV/11KV Power transformer of capacities 12.5/16 MVA at site by carried out following work of NGEF make :- (a) Opening of top plate of OLTC. (b) Draining out of transformers oil from the OLTC. (c) Stoping of leakage of oil from main shaft of OLTC including replacement of oil seal and all gasket of OLTC. (d) Checking /servicing of moving and fixed contact of OLTC and resistence test of contact. (e) Flushing of OLTC assembly with hot new oil and removing of sludge. (f) Filling of new transformer oil in OLTC . (g) Tightening of all tapping leads and connections. (h) Refixing of top plate of OLTC in original position after overhauling. (i) Electrical testing of manual/auto operation of OLTC. Note :- Transformer oil as required shall be measured and paid separately under item No 70 here-in -before as supply only.

Material and labour for servicing /testing of line circuit breaker, control panel including outdoor CT, PT and relays in control panel of outdoor SF 6 Gas Circuit Breaker of capacity 1250/800 Amps and rating 36 KV complete as details mentioned as under:- (a) Details of servicing of breaker :- (i) Checking of Closing/Tripping coil assembly (ii) Adjustment of mechanism if required. (iii) Clean the circuit breaker to remove dust and dirt. (iv) Apply a small amount of oil to rotary sections, sliding surfaces, pins, coupling section, etc.use grease for the operating shaft and bearings, and machine oil for other parts. (v) Check for rust and wear. (vi) Checking of spring charge mechanism (vii) Visual check for rust and deformation. (viii) Check for loosened bolts and nuts, broken spring washers and snap pins etc. (ix) Check for loosened connections, rust, damaged lead wires. (x) Checking of control circuit & tighten the connections if any. (xi) Check close & trip coil. (xii) Replacement of Dashpot/shock absorbers . (xiii) Replacement of carbon brush of spring charging motor (xiv) Cleaning of porcelain bushing (xv) Checking of limit switch

(b) The following test shall be carried out:- (i) Primary Injection Test of outdoor CT / PT (ii) Closing & Opening Timing Test for all three poles. (iii) IR Test with megger in open and closed condition. (iv) Contact resistance test for all three poles (v) Closing coil resistance (vi) Tripping coil resistance. (c) Testing of following relays of control panel with Secondary Injection Kit ,checking and programming of relay :- (i) Over current and earth fault relay (ii) Line diffrential relay (d) Testing of followig Aux relay:- (i) DC Supply supervision relay. (ii) Trip Circuit suprvision relay (ii) SF 6 gas pressure low. (iii) PT Fuse failure relay (iv) Master trip relay (v) Under voltage relay (vi) Over voltage relay

Material and labour for servicing /testing of transformer circuit breaker, control panel including outdoor CT, PT and relays in control panel of outdoor SF 6 Gas Circuit Breaker of capacity 1250/800 Amps and rating 36 KV complete as details mentioned as under:- Details of servicing of breaker :- (i) Checking of Closing/Tripping coil assembly (ii) Adjustment of mechanism if required. (iii) Clean the circuit breaker to remove dust and dirt. (iv) Apply a small amount of oil to rotary sections, sliding surfaces, pins, coupling section, etc.use grease for the operating shaft and bearings, and machine oil for other parts. (v) Check for rust and wear. (vi) Checking of spring charge mechanism (vii) Visual check for rust and deformation. (viii) Check for loosened bolts and nuts, broken spring washers and snap pins etc. (ix) Check for loosened connections, rust, damaged lead wires. (x) Checking of control circuit & tighten the connections if any. (xi) Check close & trip coil. (xii) Replacement of Dashpot/shock absorbers . (xiii) Replacement of carbon brush of spring charging motor (xiv) Cleaning of porcelain bushing (xv) Checking of limit switch

The following test shall be carried out:- (i) Primary Injection Test of outdoor CT / PT (ii) Closing & Opening Timing Test for all three poles. (iii) IR Test with megger in open and closed condition. (iv) Contact resistance test for all three poles (v) Closing coil resistance (vi) Tripping coil resistance. Testing of following relays of control panel with Secondary Injection Kit ,checking and programming of relay:- (i) Over current and earth fault Relay (ii) Transformer diffrential relay Testing of followig Aux relay (i) DC supply supervision relay. (ii) CB SF 6 gas pressure low. (iii) Master trip relay (iv) Main Buchholz trip (v) Buchholz OLTC Trip (vi) SPR & PRV trip. (vii) Winding temp high trip (viii) Oil temp high trip. (ix) Main Buchholz alarm (x) Winding temp High alarm (xi) Low Oil level alarm (xii) Oil temp high alarm

Material and labour for servicing /testing of line breaker/control panel including outdoor CT, PT and relays in control panel of outdoor VCB of capacity 1250 Amps and rating 36 KV complete as details mentioned as under:- Details of servicing of breaker :- (i) Checking of Closing/Tripping coil assembly (ii) Adjustment of mechanism if required. (iii) Clean the circuit breaker to remove dust and dirt. The envelope of the vacuum interrupter and insulating materials shall be wiped with a clean cloth. (iv) Checking the contact for wear. Replace if the contact piece has worn out. (v) Apply a small amount of oil to rotary sections, sliding surfaces, pins, coupling section, etc.use grease for the operating shaft and bearings, and machine oil for other parts. (vi) Check for rust and wear. (vii) Checking of spring charge mechanism (viii) Visual check for rust and deformation. (ix) Check for loosened bolts and nuts, broken spring washers and snap pins etc. (x) Check for loosened connections, rust, damaged lead wires.

Material and labour for servicing /testing of transformer breaker/control panel including outdoor CT, PT and relays in control panel of outdoor VCB of capacity 1250 Amps and rating 33 KV complete as details mentioned as under:- Details of servicing of breker :- (i) Checking of oil level in each pole (ii) Checking of visible oil leaks (iii) Cleaning of porcelain bushings (iv) Checking of oil leakage from oil dash pot in operating mechanism (v) Checking of contact burning (vi) Cleaning and lubricating (vii) Checking/tightening of all electrical terminals and earth terminals and earth connections. (viii) Checking of auxiliary switch (ix) Checking of limit switches and friction clutch. (x) Checking of closing/tripping coils (xi) Checking of spring chargingmechanism (xii) Adjustment of mechanism if required. (xiii) Check for rust and wear. (xiv) Visual check for rust and deformation.

(xv) Check for loosened bolts and nuts, broken spring washers and snap pins etc. (xvi) Check for loosened connections, rust, damaged lead wires. (xvii) Checking of control circuit & tighten the connections if any. (xviii) Replacement of Dashpot/shock absorbers . (xix) Replacement of carbon brush of spring charging motor The following test shall be carried out:- (i) Primary Injection Test of outdoor CT / PT (ii) Closing & Opening Timing Test for all three poles. (iii) IR Test with megger in open and closed condition. (iv) Contact resistance test for all three poles (v) Closing coil resistance (vi) Tripping coil resistance. Testing of following relays of control panel with Secondary Injection Kit ,checking and programming of relay:- (i) Over current and earth fault Relay (ii) Transformer diffrential relay

Testing of followig Aux relay (i) DC supply supervision relay. (ii) CB SF 6 gas pressure low. (iii) Master trip relay (iv) Main Buchholz trip (v) Buchholz OLTC Trip (vi) SPR & PRV trip. (vii) Winding temp high trip (viii) Oil temp high trip. (ix) Main Buchholz alarm (x) Winding temp High alarm (xi) Low Oil level alarm (xii) Oil temp high alarm

Material and labour for servicing /testing of line breaker/control panel including outdoor CT, PT and relays in control panel of outdoor MOCB of capacity 1250 Amps and rating 33 KV complete as details mentioned as under:- Details of servicing of breker :- (i) Checking of oil level in each pole (ii) Checking of visible oil leaks (iii) Cleaning of porcelain bushings (iv) Checking of oil leakage from oil dash pot in operating mechanism (v) Checking of contact burning (vi) Cleaning and lubricating (vii) Checking/tightening of all electrical terminals and earth terminals and earth connections. (viii) Checking of auxiliary switch (ix) Checking of limit switches and friction clutch. (x) Checking of closing/tripping coils (xi) Checking of spring chargingmechanism (xii) Adjustment of mechanism if required. (xiii) Check for rust and wear. (xiv) Visual check for rust and deformation.

(xv) Check for loosened bolts and nuts, broken spring washers and snap pins etc. (xvi) Check for loosened connections, rust, damaged lead wires. (xvii) Checking of control circuit & tighten the connections if any. (xviii) Replacement of Dashpot/shock absorbers . (xix) Replacement of carbon brush of spring charging motor The following test shall be carried out:- (i) Primary Injection Test of outdoor CT / PT (ii) Closing & Opening Timing Test for all three poles. (iii) IR Test with megger in open and closed condition. (iv) Contact resistance test for all three poles (v) Closing coil resistance (vi) Tripping coil resistance. Testing of following relays of control panel with Secondary Injection Kit ,checking and programming of relay:- (i) Over current and earth fault Relay (ii) Transformer diffrential relay

Testing of followig Aux relay (i) DC supply supervision relay. (ii) CB SF 6 gas pressure low. (iii) Master trip relay (iv) Main Buchholz trip (v) Buchholz OLTC Trip (vi) SPR & PRV trip. (vii) Winding temp high trip (viii) Oil temp high trip. (ix) Main Buchholz alarm (x) Winding temp High alarm (xi) Low Oil level alarm (xii) Oil temp high alarm

Material and labour for servicing /testing of breaker/control panel including CT, PT and relays in control panel of VCB of capacity 2000 /800/630 Amps and rating 11 KV complete as details mentioned as under:- (a) Details of servicing of breaker :- (i) Adjustment of mechanism if required. (ii) Clean the circuit breaker to remove dust and dirt. The envelope of the vacuum interrupter and insulating materials shall be wiped with a clean cloth. (iii) Apply a small amount of oil to rotary sections, sliding surfaces, pins, coupling section, etc.use grease for the operating shaft and bearings, and machine oil for other parts. (iv) Check for rust and wear. (v) Check Spring Tension and pitting of the Cluster Contacts. (vi) Visual check for rust and deformation. (vii) Check for loosened bolts and nuts, broken spring washers and snap pins etc. (viii) Check for loosened connections, rust, damaged lead wires. (ix) Check whether the contacts are damaged by arcing. (x) Checking of control circuit & tighten the connections if any.

(xi) Check close & trip coil. (xii) Checking of Jaw Contacts Conditions and repair/adjust. (xiii) Replace the jaw contacts,If required. (xiv) Improvement of resistance of epoxy insulator and epoxy body by applying post heated varnish and epoxy coating. (xv) Replacement of Dashpot/shock absorbers . (xvi) Replacement of carbon brush of spring charging motor The following test shall be carried out:- (i) Primary Injection Test of CT / PT (ii) Closing & Opening Timing Test for all three poles. (iii) IR Test with megger in open and closed condition. (iv) Contact resistance test for all three poles (v) Closing coil resistance (vi) Tripping coil resistance. Testing of following relays of control panel with Secondary Injection Kit ,checking and programming of relay :- (i) Over current and earth fault relay Testing of followig Aux relay (i) DC Supply supervision relay. (ii) Master trip relay

S&F in replacement of closing coil assembly 50 volts DC of existing make for SF 6 breaker of capacity 1250 amps of rating 36 KV including taking down of UNSV coil complete all as specified and directed

S&F in replacement of tripping coil assembly 50 volts DC of existing make for SF 6 breaker of capacity 1250 amps of rating 36 KV including taking down of UNSV coil complete all as specified and directed

S&F in replacement of closing coil assembly 50 volts DC of existing make for VCB of capacity 1250 amps of rating 36 KV including taking down of UNSV coil complete all as specified and directed

S&F in replacement of tripping coil assembly 50 volts DC of existing make for VCB of capacity 1250 amps of rating 36 KV including taking down of UNSV coil complete all as specified and directed

Material & labour for repair /servicing of marshalling box panel of 33KV/11KV Power transformer of capacities 16 / 20 MVA including follwing :- (a) Testing & repair to control wiring. (b) Testing of OTI, WTI gauge/ meter matching with OTI, WTI indicator in RTCC panel. (c) Testing of fuse/ MCB (d) Repalacement of gaskets & locks including preparation of old painted surfaces of steel by brushing/cleaning stain, greasy spots with thinner, applying two coats of spray painting (synthetic enamel paint) on all sides of etc complete all as specified and directeed.

Material & labour for repair /servicing of marshalling box panel of 33KV/11KV Power transformer of capacities 12.5 / 16 MVA including follwing :- (a) Testing & repair to control wiring. (b) Testing of OTI, WTI gauge/ meter matching with OTI, WTI indicator in RTCC panel. (c) Testing of fuse/ MCB (d) Repalacement of gaskets & locks including preparation of old painted surfaces of steel by brushing/cleaning stain, greasy spots with thinner, applying two coats of spray painting (synthetic enamel paint) on all sides of etc complete all as specified and directeed.

Material and labour for Preparation of old painted surfaces of steel by brushing/cleaning stain, greasy spots with thinner, applying two coats of spray painting (synthetic enamel paint) on all sides of 33 KV outdoor brakers with spraying machine including writing description of equipment in block English letter 50 mm high with white /black synthetic enamel paint complete all as directed by Engr -in-Charge.

Material and labour for Preparation of old painted surfaces of steel by brushing/cleaning stain, greasy spots with thinner, applying two coats of spray painting (synthetic enamel paint) on all sides of Terminal Kiosk (TK) at 33 KV Yard with spraying machine including writing description of equipment in block English letter 25 mm high with white /black synthetic enamel paint complete all as directed by Engr -in-Charge.

Material and labour for Preparation of old painted surfaces of 33 KV Switch yard including all outer steel structures/ frame/gate/fencing of bus bay at Grid, having dimensions 54 m x 11.5m x 9.5m and steel housing of capacitor bank having dimension 6m x 4.4m x 4m (incluiding top closed) by brushing/cleaning stains, greasy spots with thinner, applying two coats of spray painting (synthetic enamel paint) with spraying machine in the yard including writing description of equipments in block English letters 100 mm high with white/ black synthetic enamel paint complete all as specified and directed.

Disconnecting power supply, Preparation of old painted surfaces of steel by brushing/cleaning stain, greasy spots with thinner, applying two coats of spray painting (synthetic enamel paint) on all sides of 33 KV 16/20 MVA transformer and its accessories with spraying machine in the yard including writing description of equipment in block English letter 50 mm high with white/Black synthetic enamel paint and re-connection after painting complete all as specified and directed.

All as per item No 18 here-in -before but capacity of power transformer 12.5/16 MVA.

Material & labour for cleaning of the bay/yard (82.5 RM x 26.5 RM) manually without damaging any equipments, cable or parts of the 33 KV Grid bays, removing of dusts/grass/hurbs etc all as directed by Engr -in-charge.

Material and labour for spreading of stone aggregate of nominal size not more than 40mm from the bay/yard manually without damaging any equipments, cable or parts of the 33 KV Grid bays, spreading & levelling of finished gravel uniformaly in layers n. exc. 15 cm thick watered and rammed to true surface all as specified and directed

M & L for cutting and removing grass, vegetation bushes etc from inside boundary wall and outsite boundary wall of 33/11 KV Sub Stn, around 33 KV towers and removing all rubbish to a distance not exceeding 50 m as directed.

M&L for Servicing & Repairs to Air-break switch (isolator) off load, rotating type, 33 KV, 800 Amps Amps capacity, with proper alignment of isolator rotating blades, with fixed contact jaws, arcing horns, applying petrolium jelly to moving mechanism, cleaning and lubricating to isolator gear box assembly, tightening all nuts, bolts and clamps of jumpers etc, repairing to isolator gear box assembly and making in proper serviceable condition for smooth functioning, testing and commissioning on load complete all as specified and directed.

Supplying and fixing in repairs, male/moving contact/ rotating blade of HDE copper silver plated of Air Brake, off load isolator switch, rotating type, 33 KV, 800 Amps capacity with all fixing nuts, bolts etc complete all as specified and directed.

Supplying and fixing in repairs, Fixed Contacts, made of HDE copper, silver plated, of Air Brake, off load isolator switch, rotating type, 33 KV, 800 Amps capacity with all fixing nuts, bolts etc. complete all as specified and directed.

Supplying and fixing of terminal pad for Air Brake, off load isolator switch, rotating type, 33 KV, 800 Amps capacity

Supplying and fixing of arching horn for Air Brake, off load isolator switch, rotating type, 33 KV, 800 Amps capacity

Supply , installation, testing and commissioning in replacement of 33 KV air bake off load line isolator switch rotating type manually gear drive mechanism operated highest system voltage 36 KV rated current 800 Amps triple pole with earthing device each pole consist of insulating pedestals 03 Nos on galvanized steel base as per BSS /IS including rotating blade of HDE copper and fixed contacts of same material , spring loaded arcing horns of adequate section to brake magnetizing current of transformer as directed with adequate 50mm dia GI operating pipe for operation from ground level and operating handle complete with both off and on positions complete all as specified and directed.

All as per item No 28 above but bus isolator without earthing device

Supplying ,fixing , testing of master trip relay , 50/24 Volt DC in control panel including wiring and taking down old UNSV relay complete all as specified and directed

Supplying ,fixing , testing of Trip circuit supervision relay , 50/24 Volt DC in control panel including wiring and taking down old UNSV relay complete all as specified and directed

Supplying ,fixing , testing of DC supervision relay relay , 50/24 Volt DC in control panel including wiring and taking down old UNSV relay complete all as specified and directed

Supplying ,fixing , testing of SF 6 gas pressure supervision relay , 50/24 Volt DC in control panel including wiring and taking down old UNSV relay complete all as specified and directed

Supplying and fixing in replacement PT fuse for 11 KV/110 V PT complete as directed at site

Supply installation, testing and commissioning in replacement Potential Transformer (PT) oil cooled out door single phase ( Earthed type) of voltage ratio 33 KV/110 V class 3P - 0.5-3, burden 50 VA insulation level of 70/170 KV as specified below:- (a) Normal System Voltage-33 KV (b) Highest System Voltage-36 KV (c) Rated Primary voltage- 33 KV/√3 (d) Rated secondary voltage- 110 V/√3 (e) Nos of Lt winding 2 (f) Metering Core Accuracy class - 0.5 (g) Metering Core Rated Burden- 50 VA (h) Nos of Phase- Single (Earthed Type) (j) Protection core accuracy class - 3P (k) Protection core rated Burden - 50 VA (l) Rated Voltage Factor - 1.2 continuous & 1.5 for 30 Sec (m) Insulation Level- 36/70 KV.170 KVP (n) Temp rise at rated contineous thermal current over ambient at site - 45 0C (o) Porcelain Bushing type - Hollow Cylinder (p) 1.2/50 mcro second impulse withstand test vol -170 KV (Peak) (q) Creepage distance of HV bushing - 900 mm (min) (r) Primary & Secondary winding material - Copper

Supply, installation, testing and commissioning in replacement 33 KV current transformer oil cooled out door single phase, oil immersed and self cooled type of ratio 800-400/1-1-1-1 suitable for metering and protection equipment installed on control panels terminal block as specified below :- (a) Normal System Voltage-33 KV (b) Highest System Voltage-36 KV (c) Rated Primary current- 800-400 Amp (d) Rated secondary current- 1 Amp (e) Nos of Core - 4 (f) Core01: Accuracy class 5P10, 10VA, ALF ≥10 (g) Core02: Accuracy Class 1.0, 10VA, ISF ≤ 5 (h) Core 03 Protection core accuracy class -PS,Protection knee point voltage- 300 Volt at lower ratio (j) Core 04-Spare (k) Continuous thermal current rating 120 % of rated primary current (l)Temp rise at rated contineous thermal current over ambient at site - Less than or equal to 45 degree C (m) Insulation Level- 36/70 KV.170 KVP (n) 1.2/50 Micro second impulse withstand test voltage- 170 KV (peak) (o) Short time thermal current rating for one second - 25 KA/1 Second (p) Dynamic Current Rating - 62.5 KA ( peak) (q) Porcelain Bushing type - Hollow Cylinder (r) Creepage distance of HV bushing - 900 mm (min) (s) Primary & Secondary winding material - Copper

M&L in replacement Earthing complete with galvanized steel earth plate electrode of size 60cmx60cmx6 mm thick, buried directly in ground (earth pit not less than 2.25 m below normal ground level) with top edge of earth plate not less than 1.5m below normal ground level, connected to galvanized strip 32mm x 6 mm by means of bolts, nuts, check nuts and washers of galvanised iron or steel as shown in electrical plate No 3 of SSR Part I, connected to earth test point and the equipment on the other nuts and washers of galvanised iron side complete all as specified, including testing and commissioning complete all as directed. Note :- (a) The unit rates quoted against this item shall be deemed to include the cost of excavation and earth work in soft/loose soil, common salt & charcoal dust in alternate layers, PCC 1:3:6 type C2 as in pit, precast RCC 1:2:4 type B-1 with necessary reinforcement 6mm dia both ways as in cover & frame for pit, funnel, watering pipe 20 mm bore GI pipe light grade, protection pipe 40 mm bore GI pipe medium grade etc. (b) The quoted rates shall also deemed to include the cost of earth test point and earth strip/GI lead wire and protection pipe upto 7.5 meter beyond the earth plates electrode.

S&F steel structure with ISMB/Channel/Angle iron/flat , clamps and back plates fabricated from structural steel sections including nuts, bolts, washers,welding, bending cold or hot,drilling holes for bolts, in any shape or size as indicated or directed and inclusive of one primer coat, one under coat and one finishing coat of paint at 33 KV yard for fixing of isolator/CT/PT and for fixing of GO/DO etc complete as directed by Engr -In-Charge.

Supply and laying PVC insulated PVC sheathed cable galvanized steel strip or wire armoured electric control cables (Heavy duty) with stranded Copper conductor of size 2.5 sq mm 10 core 1100 Volts grade complete all as specified and directed.

All as per item No. 39 above but 2.5 sqmm 6 core copper conductor.

M&L for Bore earthing 150 mm dia buried by vertical boring machine, depth 50 mtr below ground level using earth electrode 50mm dia GI pipe medium grade duly drilled hole of 12mm dia, 115mm C/C on both side of the pipe including lowering in bore well upto the depth of 49 mtr and one mtr above the ground level. The pipe electrode should be filled around commericial salt charcoal dust, copper suphate and magnesium phosphate of 30 cm layer each upto the full length of pipe. The borewell should have 12 mtr of length 150mm dia MS pipe for protection of borewell. Welding of GI Strip 50mmx6mm on earth electrode GI Pipe 50mm dia upto 10mtr below ground level and 15 mtr from the bore well to test point gun metal and PCC foundation surrounding the borewell 60cmx60cmx30cm all as directed by Engr-in-charge. GI strip more than 25mtr will be measured and paid separately. Note :- Cost of gun metal test point deemed to be included in the quoted rate.

Taking out of heavy duty cooling fan ,3 phase, 50 Hz of size 600mm form power transformer 33/11 KV of capacity 12.5/16 MVA ,servicing of the fan by opening including cleaning, greasing , replacement of defective spares parts such as bearing/ bushing, capacitor, canopy, clamp, blade, etc with new one and painting of fan body with synthetic enamel paint and re-assembling in same position after repairs and testing complete all as directed by Engr-in-Charge. Note :- (a) The cost of spare parts deemed to be included in quoted rates . (b) Rewinding of the fan will be measured and paid separately under respective item of schedule here-in-after.

All as per item No 42 here-in before but of size 450mm from power transformer 33/11 KV of capacity 16/20 MVA

M&L for Rewinding of heavy duty colling fan, 3 phase, 50 Hz of size 600mm of power transformer 33/11 KV capacity with super enamelled copper wire as per existing gauge including heating, varnishing, etc complete as required and directed.

All as per item No 44 here-in before but of size 450mm

S&F in replacement silica gel with breather assembly, suitable for power transformer 33KV/11KV of 16/20 MVA capacity complete all as specified and directed

Supplying, installation, commissioning and testing in replacement of 11 KV Current Transformer (CT`s), indoor type, epoxy cast bar Primary type having ratio 100/50/5-5-5 Amps , core -1, Class 10 P20 , 15 VA for protection , Core 2 Class 0.5 , 15 VA for metering, core -3 for differential protection , Short circuit time rating 18.4 KA for 3 Sec including associated wiring including taking down old UNSV CTs complete all as specified and directed

Supplying, installation, commissioning and testing in replacement of 11 KV Current Transformer (CT`s), indoor type, epoxy cast bar Primary type having ratio 200/100/5-5-5 Amps , core -1, Class 10 P20 , 15 VA for protection , Core 2 Class 0.5 , 15 VA for metering including associated wiring including taking down old UNSV CTs complete all as specified and directed

Supplying, installation, commissioning and testing of 11 KV Current Transformer (CT`s), indoor type, resin cast epoxy type, of 13.1 KA/Sec having ratio 300/150/5-5 Amps having Core1: Class 5P10, 10VA for protection , Core2: Class 0.5, 10VA for metering and associated wiring including taking down old UNSV CTs complete all as specified and directed

Supplying, installation, commissioning and testing of 11 KV Current Transformer (CT`s), indoor type, resin cast epoxy type, of 13.1 KA/Sec having ratio 800/400/5-5 Amps having Core1: Class 5P10, 10VA for protection , Core2: Class 0.5, 10VA for metering and associated wiring including taking down old UNSV CTs complete all as specified and directed

S&F in replacement of vacuum interrupter suitable for 1250 amps, 11 KV HT VCB complete all as specified and directed

Excavation in trenches not exc. 1.5 m wide and not exc 1.5 mtr deep in soft/loose soil for laying/taking up/taking down of cables and getting out and levelling of bottom suface to required level all as specified and directed by Engineer-in- Charge.

Returning filling in,. Including spreading, levelling,. Watering and well ramming soil in layers not exceeding 25 cm thick all as specified and directed.

Removing excavated material (ie soil) from site to a distance n. exc 50 mtrs away and depositing where directed at a level n. exc. 1.5 mtr above the starting point all as specified and directed by Engineer-in-Charge.

Material and labour for river washed and screened, dry sand for filling in trenches below and around underground cables for cushioning of cables etc, complete all as specified. Note : Measurement shall be taken after punning down.

Supplying & Laying reinforced precast concrete cable cover, class EHV, type 1 with peak, size 450mm x 230mm x 50mm in trenches for protecting under ground cable as per IS (for 33 KV Cable) complete all as specified and directed.

All as per srl item No 56 here-in-before but using old reinforced precast concrete cable cove obtained under srl item No 52 here in before.

Supplying and laying un-reinforced precast concrete cable cover, class HV, type 1, flat size 300mmx 180mm x 40mm.

All as per srl item No 58 here-in-before but using old un-reinforced precast concrete cable cover obtained under srl item No 52 here in before.

Supplying, laying, jointing testing and connecting in replacement , XLPE insulated, screened, PVC bedded, galvanised steel strip or wire armoured, electric power cable (heavy duty) with multistranded aluminum conductors, 33 KV (E) grade, of size 400 Sq mm, 3 core, laid in trenches complete all as specified & directed. Note for item No 60 & 61:- Excavation, earth work ,cable protection , sand fillings , cable joint shall be measured and paid separately.

All as per item Ser No 60 above but size of cable 300 Sqmm, 3 core

Supply and fixing Cable jointing kit for 33 KV (Earthed) grade cable for straight through heat shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of following size :-

400 sqmm 3 core.

300 sqmm 3 core.

Supply and fixing Cable jointing kit for 33 KV (Earthed) grade cable for outdoor termination heat shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of following size :-

400 sqmm 3 core.

300 sqmm 3 core.

Material & labour for repair /servicing of RTCC panel of OLTC control panel of 33KV/11KV Power transformers of capacities 16/20MVA including repair /replacement to control wiring, repair to operation of OLTC from RTCC and checking of following and testing complete all as specified and directed :- (a) Digital Winding temp meter. (b) Digital oil temp meter. (c) Degital remote tap position indicator. (d) Indicator lamps. (e) Space Heater. (f) Fan auto working switch. (g) Analog to digital convertor and other spares required for displaying winding and oil temp.

All as per item ser No 64 here-in-before but 33KV/11KV Power transformers of capacities 12/16MVA

Supply only transformer oil of approved quality as per IS having dielectric strength of 45-60 KV in 2.5mm gap for filling in transformer or for topping up as required and directed

Supplying, laying, jointing testing and connecting in replacement XLPE insulated, screened, PVC bedded, galvanised steel strip or wire armoured, electric power cable (heavy duty) with multistranded aluminum conductors, 11 KV grade, IS 7098 marked, suitable for HT 11 KV(E) system laid in trenches fixed to pole, including jointing & testing of size 300 Sqmm 3 core complete all as specified and directed. Location : 11 KV Tigris Road S/S to Harbaksh Stadium Note : Excavation, earth work ,cable protection , sand fillings , cable joint shall be measured and paid separately.

Supply and fixing 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 aluminium conductor cable of size 300 Sqmm.

Supply and fixing Cable jointing kit for 11 KV (Earthed) grade cable for indoor termination heat shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 300 Sqmm .

Boring of holes under road, pavement, hard standing by trenchless technology using ultra sounding technique and necessary machine including HDPE pipe of 150 mm dia suitable for 0.6 MPA working pressure

Supplying , transporting, erecting, testing and commissioning of 36 KV, 1800MVA, 1250A, 50Hz voltage class outdoor type Vacuum Circuit Breaker for use on system voltage 33 KV. The circuit breaker and accessories shall conform to IEC-62271-100 or IS 13118 and other relevant IEC/IS standard. The circuit breaker shall be complete with terminal connection, operating mechanism, control cabinets, cable accessories like gland, terminal block, lugs, necessary steel support structure for CB and control cabinet The circuit breaker shall be required to performs as per technical parameters given below:- (Location : Kirby Place -01 No , Transformer No 01 ) (a) Installation - Outdoor, 3-pole, Vacuum Live-Tank, Porcelain Clad, Switchyard Breaker (b) Rated Voltage - 36 KV (c) Rated Current - 1250A or higher up to 2000Amps (d) Power frequency with stand voltage (KV rms)- 70 KV (e) 12/50 microsecond lighting impuls with stand voltage (KV Peak)-170 kVp

(f) Rated short circuit current breaking capacity (3 Sec ) at rated voltage specified 31.5 KA (g) Control Voltage incl. trip/close coil - 50V DC (h) Spring Charging Voltage - 230VAC (j) Symmetrical interrupting capacity (KA/RMS) 31.5 KA (k) Rated short circuit Making Current (KAP)-80A (l) Out of phase breaking capacity (KA rms) as per IEC (m) Rated operating duty as per IEC(o) Temp rise over the design ambient temperature -As per IEC 62271-100 (n) Operating Mechanism -Spring (o) Creepage distance as per IEC-900mm (p) No of trip/close coil 50 V DC-02 Nos (q) Tripping system - 50 V DC Note:- (i) Cost of supply and fix of Outdoor type Terminal Kiosk (TK) having terminals/disconnecting-links for termination of CT/PT wiring including PT secondary fuses complete all as required at site are deemed to be included in the quoted rate. (ii) Cost of construction of foundation including construction material and necessary earth work as per manufacturer design for breaker & TK complete all as required at site are deemed to be included in the quoted rate.

Supply installation & commissioning in replacement of 24V, 40A Float Cum Boost Battery Charger unit including battery bank comprising Nos of 02 Volts x 12 Nos battery of 200 AH sealed maintenance free.. The CCCV battery charger consisting of copper wound, air cooled transformer, 01 Set single phase full wave bridge rectifier consisting of diodes and SCRs, liberally rated mounted on heat sink and complete with resistor/condenser network for surge supperssion . During auto float mode automatic changeover shall take place from float mode to boost mode and vice versa, 01 Set of solid state constant potential controller to stabilize the DC output voltage of the float cum boost charger, 01 No electronic controller , DC digital ammeter , DC digital voltmeter, Potentiometer , DC, MCB for reverse battery protection . The charger should have alarm annunciation with visual and audible alarm with manual reset facility for fuse fail alarm. Float cum boost battery charger and DC distribution board shall be housed in powder coated sheet steel cubicle with panels of 1.6mm thickness , louvers for ventilation , gland plate will be provided for cable entry from bottom . The battery charger shall be divided into two compartments. The upper compartment shall house the battery charger & DCDB with all necessary controls. The lower compartment shall be suitable for housing the batteries. Tech specification shall be as under:-

(a) Input working voltage-180 -270 Volts (b) Nominal Input Voltage - 230 V , AC , 50 Hz,1 (c) On load input power factor - > 0.8 (d) On load unit watt efficiencies-> 80% (e) No load losses of complete charge-< 10% (f) Ripple contents on the load (RMS)= 1% to 5% (g) Over load - 110% for 30 minutes and will give visual indication for over load condition. (h) Boost charging - 2.4 V/Cell . (j) Float charging -2.15 V/Cell (k) Float cum boost charging-Automatically changes from one state to another state as per battery condition and will give the visual indication for either float or boost based on charging mode. (l) Reverse polarity -No damage will caused . A visual indication for reverse polarity will appear with an audio alarm. (m) Short circuit-MCB protecton provided.

Supply, installation and testing in replacement Numerical Relay draw out type in HT 11 KV VCB Panel comprising of new and modern numerical scheme for detecting, indicating and tripping the breaker on faults over-current and earth-fault in any of the three phases, Trip circuit supervision relay, 5% pick up for OC and 5% for EF. The relay shall also have the following features as minimum; (i) Programmable rated current 1A & 5A, (ii) Last 8 fault record & 200 event record with time stamping, (iii) 4 analog CT & 6 DI & 4 DO, (iv) Communicable on IEC61850 protocol, (v) Disturbance recording upto 300 cycles, (vi) Self supervision function.

The relay shall be fully integrated with the feeder, internally capturing feeder statuses if available including Breaker On, Off, Spring Chrgd, Test, Service, AC-Fail, Trip circuit healthy relay, PT supervision, inter panel tripping, Master trip relay, local remote and display the same locally on a built-in LCD screen and suitably labeled status LEDs. Relay shall have facility to locally Trip/Close the breaker as a backup to TNC switch provided separately on the panel. The relay shall be fixed on new 2mm CRCA sheet of matching existing VCB panel color and suitable size covering all blank space formed by removing old mechanical type IDMT relay complete including associated wiring and integration with existing HT VCB panel complete all as specified and directed.,

Supplying and Fixing in replacement, PG clamps aluminium cast alloy suitable for existing ACSR conductor of type Zebra/Dog/Goat/Panther/Wolf for 33 KV yard /33 KV towers with GI nuts, bolts etc complete all as specified and directed.

Supplying and Fixing in replacement, T -connector/ clamps, aluminium cast alloy suitable for existing ACSR conductor of type Zebra/Dog/Goat/Panther/Wolf for 33 KV yard with GI nuts bolts complete all as specified and directed.

S&F in replacement CT clamps aluminium cast alloy for both terminals suitable for ACSR conductor of type Zebra/Dog/Goat/Panther/Wolf for 33 KV yard with GI nuts bolts complete all as specified and directed

S&F in replacement PT clamps aluminium cast alloy for both terminals suitable for ACSR conductor of type Zebra/Dog/Goat/Panther/Wolf for 33 KV yard with GI nuts bolts complete all as specified and directed

S&F in replacement dead end clamps aluminium cast alloy for both terminals suitable for ACSR conductor of type Zebra/Dog/Goat/Panther/Wolf of 33 KV yard /33 KV towers with GI nuts bolts complete all as specified and directed

Material and labour for topping up of / filling of SF-6 gas to achieve required gas pressure in 36 KV SF6 breaker and testing complete all as directed by Engr-in -charge.

M&L for replacement of aluminium jumper made of ACSR conductor of type Zebra/Dog/Goat/Panther/Wolf conductor of 33 KV towers/33 KV yard.

M&L for stretching/tightning of loose ACSR conductor of both circuit including fixing of conductor accessories such as clamp etc as per site condition of Zebra/Dog/Goat/Panther/Wolf conductor of 33 KV lines Note :- Length of indl conductor shall be measured.

Trimming and cutting of tree branches(not more than 25mm girth) coming across 33 KV HT over head line clearing the line around 2m both sides and and disposal of branches from site exeeding 50m and not exceeding 250m from site complete all as directed by Engr-in-Charge. Note : - (i) Length of span is approx 200 to 225 RM. (ii) Due care is to be given while trimming/cutting the tree branches that there should no damage to over head line conductor/pole. In case due to any negligence, damage is caused to be make good/renewal by the contractor from his own resources and nothing extra is admissible. (iii) All Safety to labourer must be adhered by the contractor during trimming and cutting of tree branches.

Material and labour for emergency maintenance work of 33 KV overhead line during breakdown by deploying skilled labourer and electricians at faulty site having Gang of minimum 6 persons and transportation including hydraulic machine and other tools and plant required at site for fault rectification. Note:- (i) Contractor or his rep shall come to the site of breakdown within two hours of notification of breakdown. (ii) In case the rep or contractor shall not come to the site of breakdown and start attending breakdown within 12 hour a penalty of Rs 5000 per fault in per days will be imposed over contractor and shall be deducted from next due RAR. (iii) All Items incorporated in the work shall be l be measured and paid separately under respective items of Schedule

Rajindera Enterprises

Vijay Electricals

DS CONSTRUCTION