REPAIR REPLACEMENT AND MAINTENANCE REROUTING OF HT 33 11 KV CABLE NETWORK AND SERVICING OF BREAKERS CONTROL PANELS BATTERY CHARGERS YARD MAINT WITH CONNECTED ITEMS AT 33 11 KV KIRBY GRID AND ASSOCIATED AREA UNDER GE U ELECT SUPPLY DELHI CANTT 10

Amount

M&L for ON load Centrifuging and dehydration including filteration and cleaning of transformer oil by dehydration machine of 33 KV transformer at site and topping up deficient transformer oil including testing of samples before and after dehydration and filteration complete all as specified and directed. Note :- Deficient quantity of Transformer oil required for top up shall be measured and paid separately under item No 2 here-in -after as supply only.

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

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,wear/tear. (vi) Checking of spring charge mechanism (vii) Visual check for any deformation. (viii) Check for loosened bolts and nuts, broken spring washers and snap pins etc. (ix) Check for loosened connections, 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 grocomplete 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,slidingsurfaces, pins, coupling section, etc.use grease for the operating shaft and bearings, and machine oil for other parts. (v) Check for rust and wear/tear. (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 & triping 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 etc. (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) Transformer diffrential relay. (d) 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 1250 /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.

(xv) Replacement of Dashpot/shock absorbers . (xvi) Replacement of carbon brush of spring charging motor. (b) 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. (c) Testing of following relays of control panel with Secondary Injection Kit ,checking and programming of relay :- (i) Over current and earth fault relay. (d) Testing of followig Aux relay. (i) DC Supply supervision relay. (ii) Master trip relay.

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.

S&F in replacement of closing coil assembly 50 volts DC of existing make ABB/CG for SF 6 breaker of capacity 1250 amps of rating 36 KV complete all as directed by Engr -in-Charge.

S&F in replacement of closing coil assembly 50 volts DC of existing make for VCB of capacity 1250 amps of rating 36 KV complete all as directed by Engr -in-Charge.

S&F in replacement of triping coil assembly 50 volts DC of existing make ABB/CG for SF 6 breaker of capacity 1250 amps of rating 36 KV complete all as directed by Engr -in-Charge.

S&F in replacement of tripping coil assembly 50 volts DC of existing make for VCB of capacity 1250 amps of rating 36 KV complete all as directed by Engr -in-Charge.

S&F in replacement of motor & gear assembly 110/220V AC complete all as specified and directed

Material & labour for repair /overhauling/Servicing of OLTC ( On load tap changer ) of 33KV/11KV Power transformer of capacities 8/10 MVA at site by carried out following work of make :- Schenider (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 2 here-in -before as supply only.

Material & labour for repair /overhauling/Servicing of OLTC ( On load tap changer ) of 33KV/11KV Power transformer of capacities 12/16 MVA at site by carried out following work of make :- Apex India (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 2 here-in -before as supply only.

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 SF-6 breakers 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 of bus bay at Grid, having dimensions 47. m x 5.6m x 10m and steel housing of capacitor bank having dimension 9.5m x 8.8m (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.

S&F in replacement PG clamps aluminium cast alloy (bi-metallic type) suitable for existing ACSR conductor of type Zebra/Panther/Sheep with GI nuts bolts complete all as specified and directed

S&F in replacement T-connectors/clamps aluminium cast alloy (bi-metallic type) suitable for existing ACSR conductor of type Zebra/Panther/Sheep with GI nuts bolts complete all as specified and directed

S&F in replacement CT clamps aluminium cast alloy (bi-metallic type) for both terminals suitable for ACSR conductor of type Zebra/Panther/Sheep with GI nuts bolts complete all as specified and directed

S&F in replacement PT clamps aluminium cast alloy (bi-metallic type) for both terminals suitable for ACSR conductor of type Zebra/Panther/Sheep with GI nuts bolts complete all as specified and directed

S&F in replacement Isolator clamps aluminium cast alloy (bi-metallic type) for both terminals suitable for ACSR conductor of type Zebra/Panther/Sheep with GI nuts bolts complete all as specified and directed

S&F in replacement SF-6 Breaker clamps aluminium cast alloy (bi-metallic type) for both terminals suitable for ACSR conductor of type Zebra/Panther/Sheep with GI nuts bolts complete all as specified and directed

S&F in replacement Line spacer clamps aluminium cast alloy (bi-metallic type) for both terminals suitable for ACSR conductor of type Zebra/Panther/Sheep with GI nuts bolts complete all as specified and directed

Supply, Stretching/Straighting securing in replacement of aluminium conductor steel reinforced (ACSR) single/double run conductor of size Panther/Sheep/Zebra on structure for isolator, CTs/LAs etc complete all as specified and directed.

S&F in replacement silica gel with breather assembly, suitable for power transformer 33KV/11KV of 10/16 MVA capacity complete all as specified and directed

S&F in replacement of composite polymeric disc insulator with hardware fittings 33 KV grade complete all as specified and directed.

S&F in replacement of composite polymeric post insulator with hardware fittings 33 KV grade complete all as specified and directed.

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 Servicing & Repairs to Air-break switch (isolator) off load, rotating type, 33 KV, 800 Amps to 1250 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, 1250/800 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, 1250/800 Amps capacity with all fixing nuts, bolts etc. complete all as specified and directed.

Supplying and fixing in replacement of terminal pad for Air Brake, off load isolator switch, rotating type, 33 KV, 1250/800 Amps capacity

Supplying and fixing in replacement of arching horn for Air Brake, off load isolator switch, rotating type, 33 KV, 1250/800 Amps capacity

Supplying and fixing in replacement of auxilary switch 16 Amp having (5 NO5 NC) suitable for Air Brake, off load isolator switch, rotating type, 33 KV, 1250/800 Amps capacity

Supply , installation, testing and commissioning in replacement of air brake off load line isolator switch rotating type manually gear drive mechanism operated highest system voltage 36 KV rated current 1250 Amps triple pole with earthing device each pole consist of insulating pedestals 03 Nos on galvanized steel base as per BSS /IS incuding 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.

Supply, installation, testing and commissioning in replacement of lightening arrestor SMX type complete with all fittings transmission class 36 KV 10 KA 50 Hz suitable for system voltage 33/36 KV complete all as specified and directed

Supplying ,fixing , testing of master trip relay , 50/24 Volt DC in control panel including wiring complete as directed at site

Supplying ,fixing , testing of Trip circuit supervision relay , 50/24 Volt DC in control panel including wiring complete as directed at site

Supplying ,fixing , testing of DC supervision relay relay , 50/24 Volt DC in control panel including wiring complete as directed at site

Supplying ,fixing , testing of PT fuse failure relay , 110 Volt AC in control panel including wiring 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 & commissioning in replacement of 50V/30A Float Cum Boost Battery Charger unit and DC distribution board in common cubicale . The charger is suitable for 415 Volts +/-10% three phase AC in put and the output is suitable to Float/Boost Charge 50 V DC supply load. The out pur voltage remains constant with in +/-2% for AC in put voltage variation 415 Volt+/- 10% and load variation 0-100%.The supply of 50 Volt 200 AH SMF VRLA Battery Bank consisting of 25 Cells of 2 Volt 200 AH capacity complete with copper inter cell connectors, SS Nuts and Bolts and washers MS power coated stand. Note (i) The current rating remains 30 Amp. (ii) DC districution board consist of (a) incomer-01 No 63 DP MCB (b) outgoing -05 Nos 16A/20 Amp DP MCB

(a) Input working voltage-415 Volts +/- 10% Three phase AC in put and out put is suitable (b) Nominal Input Voltage - 415V , AC , 50 Hz, 3 Phase (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. Make of battery charger. Statcon/Sinetrac/Amar Raja Make of batteries. Exide/Amaron/Okaya

Supply and laying in replacement of 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. 43 above but 2.5 sqmm 6 core copper conductor.

Material of labour for removal of aggaregate including Hard surface cutting in PCC, pavement, etc for laying of control cables, pipes etc of any size up to a approximate width 45 cm and depth 45 cm and making good and refilling of aggregate after laying of pipe and cable complete all as directed at sie

Supplying, installation, commissioning and testing in replacement of 11 KV Current Transformer (CT`s), indoor type, epoxy cast resin having ratio 1000/500/5-5 Amps , core -1, Class 5 P10 , 15 VA for protection , Core 2 Class 0.5 , 15 VA for metering, Short circuit time rating 13.4 kA for 3 Sec including associated wiring complete all as specified and directed

Supplying, installation, commissioning and testing in replacement of 11 KV Current Transformer (CT`s), indoor type, epoxy cast resin having ratio 400/200/5-5 Amps , core -1, Class 5 P10 , 15 VA for protection , Core 2 Class 0.5 , 15 VA for metering, Short circuit time rating 13.4 kA for 3 Sec including associated wiring complete all as specified and directed

Supplying, installation, commissioning and testing in replacement of 11 KV Current Transformer (CT`s), indoor type, epoxy cast resin having ratio 600/300/5-5 Amps , core -1, Class 5 P10 , 15 VA for protection , Core 2 Class 0.5 , 15 VA for metering, Short circuit time rating 13.4 kA for 3 Sec including associated wiring complete all as specified and directed

S&F in replacement of vacuum interrupter suitable for 630/800/1250amps, 11 KV HT VCB complete all as specified and directed

Supplying & Fixing in replacement support rod with screws suitable for 630/800/1250 amps, 11 KV HT VCB complete all as specified and directed

Supplying & Fixing in replacement support insulator suitable for 630/800/1250 amps, 11 KV HT VCB complete all as specified and directed

Supplying & Fixing in replacement upper connector suitable for 630/800/1250 amps, 11 KV HT VCB complete all as specified and directed

Supplying & Fixing in replacement lower connector suitable for 630/800/1250 amps, 11 KV HT VCB complete all as specified and directed

Taking out of heavy duty cooling fan ,3 phase, 50 Hz of size 24" form power transformer 33/11 KV of capacity 12/16 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

M&L for Rewinding of heavy duty cooling fan, 3 phase, 50 Hz of size 24" 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.

Supply and fixing of in replacement of TNC Swith 11 KV VCB 16 Amp suitable for existing 11 KV VCB Make Areva, CG and ABB/Seimens/schenider etc.

Supplying & Fixing in replacement of spouch insulator suitable for 630 to 1200 amps, 11 KV HT VCB complete all as specified and directed

S&F time switches astro type in replacement having longitude and latitude of Indian cities in memory 415 V three phase 20 Amp rating with 20 Amps, 415 Volts, three pole contactor fitted inside factory made 2mm thick steel enclosure duly powder coated paint complete all as specified and directed.

Supplying, laying, jointing testing and connecting in replacement of XLPE insulated, screened, PVC bedded, galvanised steel strip or wire armoured, electric power cable (heavy duty) with multistranded aluminum conducators, 3 3 KV (E) grade, of size 400 sq mm, 3 core, laid in trenches complete all as specifed & directed in replacement of underground cable. Note :- Excavation, earth work, cable protection, sand fillings, cable joint shall be measured and paid separately.

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 / ducts / encased in GI pipe / fixed to pole, including jointing & testing complete all as specified and directed of following sizes

95 sqmm 3 core.

120 sqmm 3 core.

150 sqmm 3 core

185 sqmm 3 core

240 sqmm 3 core

300 sqmm 3 core

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

S&F in replacement HDPE Pipe with necessary accessories/ fittings for cable protections/pole for crossing of culverts/nallah of following bore sizes

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.

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

Taking down old PCC cover & refixing/relaying the same all as directed by Engineer-in-Charge/GE

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

S&F cable route indicator made of RCC (Nominal Mix) type B0 1:2:4 (12.5mm graded stone aggregate) with 8mm TMT Bar c/c of size 1m height X 60cm wide X 10cm thick tapered on top, visible above ground, duly painted with synthetic enemel paint of yellow colour base and letters with black paint. The description for writing for HT cable 33 KV as directed by Engr-in-charge complete all as specified and directed. Note : Rate for PCC 1:3:6 for foundation (min size 0.8mx0.3mx0.3m) of aggregate size 20mm for cable route indicator deemed to be included in the item.

S&F in replacement Cross arms, bracings, supports, 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 aluminium paint on 33 KV yard structure

M&L in replacement 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 sulphate 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.

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 of Antistatic flooring of thickness 2.5mm thick of standard width and roll length conferming to 5TEC-7 pamplet Electrostatic decreease less than 0.5 sec and fixing with adhesive SR 998 Comp strip of grid 1m x 1 m size 01 inch x 50 microne complete all as specified and directed.

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 MS strip 32mmx6mm 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 ironside 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 any type of soil, common salt & charcoal dust in alternate layers, PCC 1:3:6 as in pit, precast RCC 1:2:4 type B-1 with necessary reinforcement 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 and protection pipe upto 7.5 meter beyond the earth plates electrode.

Supply and fix Cable jointing kit for 11 KV (Earthed) grade cable for indoor termination heat shrink type joint complete with jointing material and accessories suitable for 1000 sqmm single core XLPE armoured aluminium conductor cable complete all as specified and directed.

M&L for Laminated paper sticker of size 250 mm x 8 mm in silver colour and printing of feeder name/CT ratio etc as provided by AGE (U) E/S No - 1 in black colour and pasting the same on HT/LT panels panels completeall as specified and directed. Note :- Each stickershall have different printing matter.

Testing the cables with high voltage DC testing machine and locating the fault in the cables by fault locating machine to pin point exact position of fault, disconnecting faulty 33/11 KV HT cables of different sizes from both ends, removal of Fault, Re-connections and testing of cables after removal of fault complete all as specified and directed. Note: (a) 33/11 KV HT cable & joints shall be measured and paid for seperately under respective items of schedule. (b) Retrieved old serviceable cable cover will be laid in trenches for cable protection. If extra PCC cover and sand required at site shall be measured and paid separately under respective items of BOQs. (c) Excavation and earth work will be measured and paid for seperately under respective items of schedule.

Supply and fix Cable jointing kit for 11 KV (Earthed) grade cable for straight through heat shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of following size :-

95 Sqmm 3 core.

120 Sqmm to 185 Sqmm, 3 core.

240 Sqmm to 300 Sqmm 3 core

Boring of hole under road/pavement/hard standing or any other situation upto 0.90 mtr below ground by mannual means and suitable for passing of GI pipe 110 to 140 mm bore and making good both ends all specified and directed

Supply and fix cable jointing kit for 33 KV (Earthed ) grade cable for straight though heat shrink type joint complete with jointing meterial and accessories suitable for XLPE armoured aluminium conductor cable of size 3 core 400 sqmm complete all as specified and directed at site.

Vijay Electricals

mayur enterprises

MV Engineers And Contractors

M P TYAGI ENGINEERS AND CONTRACTORS

Buddham Builders

DS CONSTRUCTION