REPAIR AND MAINTENANCE OF 11KV SWITCHGEAR, POWER TRANSFORMER, YARD MAINT WITH CONNECTED 11 KV REROUTING OF HT 33/11 KV KIRBY GRID AND MAINTENANCE OF LT PANELS/FEEDER PILLARS, DISTRIBUTION TRANSFER AND 11 KV HT SWITCH, RMU, VCB WITH CONNECTED ITEMS AT

Amount

Supply installation & commissioning in replacement of 24V/40A Float Cum Boost Battery Charger unit including battery bank comprising 02 Nos of 12 Volts-100 AH sealed maintenance free battery. 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.

M&L for ON load Centrifuging and dehydration including filteration and cleaning of transformer oil by dehydration machine of 33 KV/11KV 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 and topup 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. (iii) SF 6 gas pressure low. (iv) PT Fuse failure relay. (v) Master trip relay. (vi) Under voltage relay. (vii) 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:- (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) Applying of epoxy Paint for Support/Spouch insulator, CTs, PTs, and epoxy body at inside of VCB for improvment of resistance value. (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/11 KV 630 Amp RMU and testing complete all as specified and directed.

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 KVcomplete 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 complete all as specified and directed.

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 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 complete all as specified and directed.

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 16 MVA at site by carried out following work of (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 specified and directed.

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 specified and directed.

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.

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 disc insulator with hardware fittings 33 KV grade complete all as specified and directed.

S&F in replacement of pin 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 complete all as specified and directed.

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

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 complete all as specified and directed.

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 all as specified and directed.

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

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

Supplying,fixing,testing of PT fuse failure relay,110 Volt AC in control panel including wiring complete all as specified and directed.

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 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. 41 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 specified and directed.

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.

Supply and fixing of in replacement of TNC Swith 11 KV VCB 16 Amp suitable for existing 11 KV VCB complete all as specified and directed.

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

Supplying, laying, jointing testing and connecting 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

120 sqmm 3 core.

185 sqmm 3 core

240 sqmm 3 core

300 sqmm 3 core

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 complete all as specified and directed.

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

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 and directed.

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.

Laying only old cover obtained sri item No 57 here in before.

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

Laying only old cable cover obtained under srl item No 57 here in before.

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 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

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.

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 ables 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 :-

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 by mannual means and suitable for passing of GI pipe 110 to 140 mm bore and making good both ends complete all as 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.

S&F and installation battery 12 volts,100 AH, dry type in replacement of old unserviceable battery in battery charger with suitable size of new copper battery terminal and lugs and initially charging, commissioning and testing complete all as specified and directed.

S&F MCB single pole of capacity 06 Amps to 32 Amps 10 KA, C curve with provision of suitable channels in replacement of existing fuses complete all as specified and directed.

Supplying and fixing in replacement Potential Transformers, single phase of 11 KV rating with ratio 11kV/rt3:110V/rt3, Cl.0.5 and burden class 50VA for 11 KV VCB Panels including taking down old one complete all as specified and directed.

S&F in replacement of LED indication lamp for breaker ON/OFF/TRIP/Breaker Spring Charged/R-Y-B etc for 11 KV control panel including associated wiring, if reqd, complete all as specified and directed.

Supply and installation in replacement Anti-condensation space-heater with Thermostatic control in cable and circuit breaker compartments of HT switchgears complete all as specified and directed.

S&F in replacement of isolating contact assembly suitable for 800/630 amps, 11 KV HT VCB complete all as specified and directed.

S&F in replacement of fixed contact block complete suitable for 800/630 amps, 11 KV HT VCB complete all as specified and directed.

S&F in replacement of moving contact block complete suitable for 800/630 amps, 11 KV HT VCB complete all as specified and directed.

S&F in replacement of motor & gear assembly 230V AC suitable for 800/630 amps, 11 KV HT VCB including testing & putting on load complete all as specified & directed.

S&F in replacement of spring bearing gear suitable for800/630 amps, 11 KV HT VCB complete all as specified and directed

S&F in replacement of closing coil assembly 24 volts DC suitable for 800/630 amps, 11 KV HT VCB complete all as specified and directed

S&F in replacement of tripping coil assembly 24 volts DC suitable for 800/630 amps, 11 KV HT VCB complete all as specified and directed

Supply and fix in replacement close/trip coil 24V DC for 11 KV HT VCB of capacity 800/630 Amps capacity complete all as specified and directed.

S&F in replacement of panel door lock suitable for 800/630 amps, 11 KV HT VCB complete all as specified and directed.

Supplying & Fixing in replacement auxiliary switch (7 No + 7NC) suitable for 800/630 amps, 11 KV HT VCB complete all as specified and directed.

S&F in replacement Caution plate “CAUTION MEN AT WORK of size 40cmx15cm made out of white acrylic sheet with Red colored glow tape and size of writing letter is not less than 5 cm each.

S&F in replacement of HRC fuse of capacity 20 Amps for VCB complete all as specified and directed.

S&F in replacement MCB 20 to 32 Amps DP complete all as specified and directed.

S&F in replacement of Digital Volt meter Secondary voltage 110 V for 11 KV VCB Control Panel complete all as specified and directed.

M&L for replacement of complete control wiring (AC/DC) in existing HT 11 KV VCB Panel of capacity 630 Amps installed at substation using 2.5 Sqmm FRLS copper wire and associated accessories necessary for wiring and integration of control panel with breaker, relays, meters, power pack, T&C switch, annunciator etc and including the following:- (i) AC/DC copper wiring, lugs, terminals, TB's, TB markers, strips, etc which are necessary for integration of new items with existing panel. The contractor shall ensure integrity of critical protection scheme off the panel and shall be demonstrated via functional tests at site including tacking out control wiring complete all as specified and directed.

Supplying, installation, commissioning and testing in replacement of 11 KV Current Transformer (CT`s), indoor type, resin cast epoxy type, of 25.0 KA/Sec having ratio 300/150/5-5 Amps having Core1: Class 5P10, 10VA for protection , Core2: Class 0.5, 10VA for metering including associated wiring complete all as specified and directed

All as per item No 93 here-in-before but having ratio 200/100/5-5

All as per item No 93 here-in-before but having ratio 150/75/5-5

Supplying and fixing in replacement Potential Transformers, single phase of 11 KV rating with ratio 11kV/rt3:110V/rt3, Cl.0.5 and burden class 100VA for 11 KV VCB Panels including taking down old one complete all as specified and directed.

Disconnecting and taking down faulty and defective copper wound transformers of any capacity up to 315 kVA , 11000/433 Volts from two pole or 4 pole structure or substations and transporting to MES store yard for minor/major repair works complete all as specified and directed.

Disconnecting and taking down faulty and defective copper wound transformers of any capacity up to 400 to 1500 kVA , 11000/433 Volts from two pole or 4 pole structure or substations and transporting to MES store yard complete all as specified and directed.

Material and Labour in repairs for draining out complete transformer oil from transformer oil reserver tank up to 1500 KVA capacity at MES store yard for major repair works and storing the transformer oil in suitable container (container to be provided by the contractor to keep aside the oil for re-use (after repair of transformer) and lifting of core assembly by opening of top cover and other items for inspection/examination by Board of Officers and lowering/fixing of core assembly in its original position after inspection to make it ready for transportation to contractor workshop/factory for repair works. (Note :- transportation charges will be paid separately against item No. 100 & 101

Transporting of defective/faulty copper wounds transformer of capacity up to 315 kVA , ratio 11000/433 Volts from MES store yard to contractor's workshop/factory for repair works and return back to MES store yard after repair works completed for installation at their same location complete all as specified and directed.

Transporting of defective/faulty copper wounds transformer of capacity 400 to 1500 kVA , ratio 11000/433 Volts from MES store yard to contractor's workshop/factory for repair works and return back to MES store yard after repair works completed for installation at their same location complete all as specified and directed.

M&L in repairs for shifting of serviceable transformer of capacity up to 1500 KVA from MES store Yard/Sub Stn (indoor/outdoor) or from any location at Delhi cantt for installation in place of unserviceable transformer and return back to MES store yard after replacing with repaired transformer complete all as specified and directed.

M&L in repairs for factory opening of faulty / defective transformer of ratio 11000/433 volts opening the top cover of transformer , carrying out the repairs/works listed at serial No. (i) to (xi) below for the transformers of capacity up to 315 KVA (i) Taking out the core/coil of transformer from tank by disconnecting star delta connection of transformer , After dismantling of Transformer and physical joint inspection of core coil assembly (removing all 3 limbs HV &LV winding from Core Assembly) washing of core assembly by hot oil for removing brunt carbon and copper particles and cleaning of complete top yoke by oil (ii) Painting inside of the transformer with yellow paint and outside body with synthetic enamel paint of existing tint/color Cleaning inside of the transformer by using transformer oil. (iii) Refixing/ reassemble of complete core assembly and core coil assembly providing new coils and new tap leads of tap changer including requisite insulation material including heating up the transformer core assembly to remove moisture after carrying out the repairs works . (iv) Renewal of rubberized gasket set for top cover, Brass spindles, LT and HT bushings ,tap changer connection WTI & OTI connection and CT connection etc.

(v) Refilling of the decanted transformer oil after centrifuging and testing for required di-electric strength. (vi) Refixing the transformer top cover with nuts, bolts and washers and conservator tank ready for final testing all as directed in presence of rep of MES. (vii) Preparing Inspection report for renewal of parts etc in presence of Engineer - in- charge and Contractor. (viii) The contractor shall arrange factory visit for the Engineer - in- charge or his representative as and when required, testing of transformer to be done on full load at factory. (ix) Soldering/ brazing or connecting LV bus bars with suitable size nuts, bolts and washers (x) Providing necessary insulation papers, sleeves, PVC pipes insulation sheet etc. (xi) Renewal of worn out nuts, bolts and washers Note : Coil and insulation shall be measured and paid separately

All as per item No.103 here in before but up to capacity above 400 KVA to 1500 KVA

Material and Labour in repairs for rewinding of HT coils with copper wire DPC/super enameled high quality matching with existing gauge and impedance including requisite insulating paper/material in each layer of winding after taking down old existing winding of HT coils of 11 KV transformer complete all as specified and directed. Note : (i) The rate quoted against these items is inclusive necessary provision of all types of insulating materials , heating and varnishing etc.

All as per item No 105 here-in-before but LT coils with copper strips.

Material and Labour for drying/ovening of complete Core coil assembly(CCA) in vacuum chamber and continuous monitoring to improve of IR Values after varnishing the coil to eliminate moisture content from Transformer up to 630 KVA capacity complete all as specified and directed.

Material and Labour after drying and ovening and Re-assembling of up to 630 KVA Transformer core, testing of magnetic circuit for IR values, assembly and connection of OLTC of all phases, testing of transformer at low voltage, checking of ratio and polarity test. all as specified and directed. Note: For Item no 113 to 118 The following routine test as per IS 1180 (Part I) -2014 shall be carried out at repairing workshop /manufacturer having NABL calibration of test equipments . (i) Measurement of winding resistance. (ii) Measurement of voltage ratio and check of voltage vector relationship. (iii) Measurement of impedance voltage/short circuit impedance (principal tapping) and load loss . (iv) Measurement of no load loss and current. (v) Measurement of insulation resistance. (vi) Dielectric tests (c) The contractor shall give written warranty of one year for the repaired transformer. Note :-HT/LT leg coils and transformer oil required for top up shall be measured and paid separately under relevant items of this Schedule here-in-after as supply only.

M&L for hiring, transportation , Installation and testing of serviceable transformer of same capacity or higher in place of unserviceable transformer which is under repair and shifting back to workshop , on hire basis for 15 days when ordered complete all as specified and directed.

Note :-1. Repairing of transformer have to be completed within 15 days duration, no extra cost will be paid toward hiring charges beyond 15 days. Moreover contractor shall not be allowed to shift the hired transformer until it is replaced by the repaired transformer. In case any fault/ breakage/burning/peeling of painting and any other defects occurred in hired transformer the contractor shall have to make good himself from his own expenses. Contractor should check the available infrastructure and to be sure regarding safety of hired transformer before installation. The rate quoted is deemed to be included all as transportation cost, earthing leads lifting/lowering arrangement etc for transformer of capacity upto 1500 KVA.

Note-2. In case the defective/ unserviceable transformer not repaired & installed on its site within the specified period of 15 days from the date of handing over to contractor ; a penalty recovery @ Rs. 1000/- per day will be charged from his dues. During this period contractor shall not be allowed to shift the hired transformer until it is replaced by the repaired transformer. No extra cost beyond 15 days will be paid to contractor on this account.

Supply and fixing in renewal of transformer bushing on LT 433 volt side including brass stems /rods conical bush and gasket suitable for indoor/outdoor transformer capacity up to 150 KVA complete all as specified and directed .

63 KVA to 315 KVA.

400 KVA to 1500 KVA.

Supply and fixing in renewal of porcelain transformer bushing HT 11 KV including brass set stems conical bush and gasket for indoor/outdoor transformer of following capacities complete all as specified and directed.

63 KVA to 315 KVA.

400 KVA to 1500 KVA.

S&F in renewal of silica gel of breather assembly with vent pipe and new silica gel for indoor/outdoor transformer of the capacity up to 315 KVA complete all as specified and directed.

All as per item No 112.00 here in before but of capacity 400 KVA to 1500 KVA

Supply and fill in replacement silica gel in transformer complete all as specified and directed.

Painting of transformer after preparation of old painted surfaces of steel, by brushing/cleaning stain, greasy spots with thinner, applying two coats of spray painting with PU paint with spraying machine to transformer indoor/outdoor, fixed on poles or in Sub Station at different location after disconnecting of HT supply from incoming and LT supply from outgoing capacity 63 KVA to 315 KVA complete all as specified and directed .

All as per Serial item No 114 here-in-before but 400 KVA to 1500 KVA capacity

Earthing complete in replacement with galvanized steel earth plate electrode 60 cm x60 cm x 6 mm thick buried directly in ground ,(Earth pit not less than 2.25 meter deep below ground level) with top edge of plate not less than 1.5 meter below normal ground level ,connected to and including galvanized iron earth wire 32 X 6 mm by means of nut, bolts, check nuts and washers of galvanized iron or steel and provision of charcoal dust and common salt packed all around the earth plate including necessary excavation and earth work in soft/loose soil and testing complete all as specified and directed and shown in electrical plate number 3 of MES SSR part-I(2009) (a) Excavation and earth work for drilling hole for electrode in soft/loose Soil. (b) PCC pit in cement concrete 1:2:4 type B-1, Pre cast RCC cover with suitable handle 40 mm thick in PCC 1:2:4 type B-1, reinforced with welded steel wire fabric weighing not less than1.87 Kg/ Sq meter. (c) Funnel with watering pipe of GI 20 mm nominal bore light grade and lugs etc complete all as specified and directed (d) 40 mm nominal bore medium grade GI protection pipe for protection of earthing lead complete all as specified and directed. (e) Requisite quantity of common salt and charcoal. (f) Testing of earthing.

Supply and fixing in replacement of galvanized iron strip 32 X 6 mm for additional earthing lead beyond 7.5 meter complete all as specified and directed.

S&F Thermometer of transformer capacity up to 1500 KVA complete all as specified and directed

Taking down unserviceable sheet gasket (Cork sheet), Supply and fix synthetic rubberized cork sheet gasket 6mm 2' x 3' size sheet thick for top cover HT/LT bushes at places existing and tighting all the bushings and top cover to avoid any oil leakages of capacity upto 1500 KVA complete all as specified and directed.

Calibration of all the electromagneitic/ thermal/ microprocessor relays of 11 KV VCB/RMU and setting the relay tripping timings in advance to the feeding sub station to ensure pock wise re-installation of various relays in position with complete testing and commissioning. Ensure proper functioning.

Note :- (a). Primary & secondary injection kit shall be arranged by the contractor (b) DC Supply for relay testing shall arranged by the contractor (c) The contractor shall prepare the relay adjustment and tripping timing chart in the follow up fashion and submit to Engineer-in-Charge

Material and labour for complete bush cutting vegetation around the substations/ transformers lines complete all as specified and directed.

Taking down burnt defective drawnout/inlet Valve (Brass any size) and supply and fixing new drawn out/Inlet valve (brass as per existing size) suitable for any make of cap upto 315 KVA Transformer complete all as specified and directed.

All as per item No 122 above but from 400 KVA to 1500 KVA

Taking down the Defective tap changer assembly ,Supply and fix offload tap changer assembly suitable for any make upto 630 KVA transformer with 7 tapping position including opening top cover, conservator etcs complete all as specified and directed.

M&L for repairing/ Plastring of Transformer platform of size 2.2mx2.2mx1 m height built in CM 1:4 including 20mm graded stone aggregate over the plinth along with provn of stair case on one side complete all as specified and directed.

M&L Sticking of ready made sticker with letters,figures clearly mention, Name , SM No, in red colour of size for HT VCB , RMU, Step down transformer 0.6M x 0.2 M size complete as specified and directed.

M&L for cement painting of with prepared white (snow sem) for transformer plitnth area of any size all as specified for the following:- (including scrapping & cleaning with wire brush)

Material and Labour for complete removal of Stone aggragerate and removing of sand mud. Debris/ weeds and plants from the agraggate and relaying at the removed place complete all as specified and directed.

Supply, installation & commissioning and testing in replacement of DC power pack for RMU comprising 12 V and . 7 AH Complete accessories required for commissioning is included in the scope of work. complete all as specified and directed.

Disconnecting HT supply from 11 KV, 630 Amps RMU, 3/4/5 way and servicing and overhauling of RMU, checking of tripping mechanism, greasing of moving contacts, cleaning of carbon from main contacts, checking of spring tension, checking of loosened bolts and nuts , checking of loosened connections, rust, damaged, lead wire, checking of spring charging motor, improvement of resistance of CTs, PT, epoy insulator and epoxy body by applying post heated varnish complete all as directed and testing on load complete all as specified and directed.

Supply & fixing in replacement of cable boost 11 KV in 630 Amps RMU, 3/4/5 way complete all as specified and directed.

Supplying and fixing in replacement associated ring-core cast-resin insulated CTs 50/1 Amps 2.5 VA 10P10 for protection in 11 KV, 630 Amps RMU (Ring main unit) complete all as specified and directed.

Supplying and fixing in replacement associated ring-core cast-resin insulated CTs 50/1 Amps 2.5 VA Class 1 for protection in 11 KV, 630 Amps RMU (Ring main unit) complete all as specified and directed.

Supplying and fixing in replacement associated ring-core cast-resin insulated CTs 100-50/1 Amps 2.5 VA 10P10 for protection in 11 KV, 630 Amps RMU (Ring main unit) complete all as specified and directed.

Supplying and fixing in replacement associated ring-core cast-resin insulated CTs 100/1 Amps 2.5 VA Class 1 for protection in 11 KV, 630 Amps RMU (Ring main unit) complete all as specified and directed.

Supplying and fixing in replacement 1-Ph (11 Kv/rt3) : 110 VAC, 50 VA Potential transformer in 11 KV, 630 Amps, RMU (Ring main Unit) complete all as specified and directed.

S & F in replacement of Faulty operating mechanism of earthing switch for VCB, installation of new operating mechanism of earthing switch with Testing, commissioning etc

S & F in replacement of MCR-3 way Operating mechanism interlock of 11 KV RMU for Operation + Earthing switch of VCB installation of new Operating mechanism interlock of 11 KV RMU for Operation + Earthing switch of VCB with Testing, Commissioning etc NOTE :- (i) contractor should provide 50 % of the material as listed above within 15 days of the placing of work order and shall be verified by the Eng-in-charge.

MV Engineers And Contractors (BID ID -3170072)

M/s JAIMAA ASSOCIATES (BID ID -3171803)

Vijay Electricals (BID ID -3161014)

mayur enterprises (BID ID -3170106)

DS CONSTRUCTION (BID ID -3170863)

Rajindera Enterprises (BID ID -3160963)