CWE(U)/D-21/2021-22

Amount

Material and labour for ON load Centrifuging and dehydration including filteration and cleaning of transformer oil by dehydration machine of 33 KV transformer / Stn 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 :- (a) 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. (b) Test report of dielectric strength shall be recordable after and before of dehydration process.

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.

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 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/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) 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 Note:- For item No 4 Calibration of breaker after the repair shall be carried out and record of the same shall be kept in record.

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 (xvii) Checking, cleaning, tightening , testing the bus bar including bus chambers, CT/PT etc (xviii) Checking, cleaning, tightening , testing of Spouts insulator, support insulators .

(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 Note:- For item No 5 Calibration of breaker after the repair shall be carried out and record of the same shall be kept in record.

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.

Supply and fixing in replacement of closing coil assembly 50 volts DC of existing make CG for SF 6 breaker of capacity upto1250 amps of rating 36 KV complete all as directed by Engr -in-Charge.

Supply and fixing in replacement of tripping coil assembly 50 volts DC of existing make for SF 6 breaker of capacity upto1250 amps of rating 36 KV complete all as directed by Engr -in-Charge.

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

Supply and fixing 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.

Material & labour for repair /overhauling/Servicing of OLTC ( On load tap changer ) of 33KV/11KV Power transformer of capacities 20 MVA at site by carried out following work :- (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 /servicing of marshalling box panel of 33KV/11KV Power transformer of capacities 20 MVA including follwing :- (a) Testing & repair to control wiring. (b) Testing of OTI, WTI , meter matching with OTI, WTI indicator in RTCC panel. (c) Replacement of fuse with MCB 20 Amps -18 Nos (d) Repalacement of gaskets & locks including preparation of old painted surfaces of steel by brushing/cleaning stain, greasy spots with thinner etc applying two coats of spray painting (synthetic enamel paint) 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 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 steel structures/ frame/fencing/gate of bus bay at Grid, having dimensions 39 m x 11m x 9.5m and steel housing of capacitor bank having dimension 5m x 4m x 3m (incluiding top closed), CTs/PTs inside of yard 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 feeders/ equipments/ isolators in block English letters 50 mm high with white/black synthetic enamel paint as existing colour including making of marking (R-Y-B) by paint of all over the yard as approved by Engr In Charge 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 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 after painting complete all as specified and directed.

Material & labour for taking down and preparation of old painted surfaces of steel by brushing/cleaning stain, greasy spots with thinner, applying two coats of spray painting (Black synthetic enamel paint) on all sides of duct cover with spraying machine in the yard/ power house and refixing the same after painting complete all as directed by Engr -in-Charge.

Material and labour for re-painting of LT Panels/feeder pillars of approx size 3 to 5 Sqm with 2 coats of super enamal paint over a coat of red-oxide with sparygun including writing of feeder Name, I/C & O/G circuits etc as complete all as directed by Engr -in-Charge.

Material and labour for sprading 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 ascomplete all as directed by Engr -in-Charge.

Material and labour 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 complete all as directed by Engr -in-Charge.

Material and labour 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 complete all as directed by Engr -in-Charge.

Supplying and Fixing in replacement, 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 directed by Engr -in-Charge.

Supplying and Fixing in replacement, 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 directed by Engr -in-Charge.

Supplying and fixing of terminal pad for Air Brake, off load isolator switch, rotating type, 33 KV, 1250/800 Amps capacity complete all as directed by Engr -in-Charge..

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

Supply, installation, testing and commissioning in replacement of air brake off load line/Bus isolator switch rotating type manually gear box operated highest system voltage 36 KV rated current 1250 Amps triple pole each pole consist of silicon rubber polymeric insulator 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 without earthing device with adequate size of GI operating pipe for operation from ground level and operating handle complete with both off and on positions including provision of mechanical locking arrangement and 2 No + 2NC limit switch & auxiliary switch 10 way complete all as directed by Engr -in-Charge. Note :- The isolator shall be operated through gear mechanism.

All as per item No 26.0 (here-in-before) but isolator with earthing complete all as directed by Engr -in-Charge.

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 directed by Engr -in-Charge.

Supplying ,fixing , testing of master trip relay , 110/50/24 Volt DC in control panel including wiring complete all as directed by Engr -in-Charge.

Supplying ,fixing , testing of Trip circuit supervision relay , 110/50/24 Volt DC in control panel including wiring complete all as directed by Engr -in-Charge.

Supplying ,fixing , testing of DC supervision relay , 110/50/24 Volt DC in control panel including wiring complete all as directed by Engr -in-Charge.

Supplying ,fixing , testing of SF 6 gas pressure supervision relay , 50 Volt DC in control panel including wiring complete all as directed by Engr -in-Charge.

Supplying ,fixing , testing of PT fuse failure relay , 110 Volt AC in control panel including wiring complete all as directed by Engr -in-Charge.

Supply only Microprocessor Based Alarm Annunciator for Power transformer of cap 20 MVA/ outgoing feeder, with built in Buzzer having nos of pts- 12, push bottons, big window-4 nos, small wingow-8 Nos complete all as directed by Engr -in-Charge.

Supply only Microprocessor Based Alarm Annunciator for 33 KV outgoing feeder, with built in Buzzer having nos of pts- 8, push bottons, big window-8 nos complete all as directed by Engr -in-Charge.

Supplying and fixing PT fuse for 11 KV/110 V PT complete all as directed by Engr -in-Charge.

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 (s) Mounting Detail - On existing grid structure as per site requirment Make :- Pragati, AE, Kappa or equivalent

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 Amp 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 - 3 (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) -blank- (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- 36/70/170 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 installation & commissioning in replacement of 50V/40A Float Cum Boost Battery Charger unit including battery bank comprising 25 Nos of 2 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.

Supply and fixing in replacement battery bank comprising 24 volts, 120 AH @ 2 Volt each- 12 Nos sealed maintenance free battery.

Material and labour in replacement Earthing complete with copper earth plate electrode of size 60cm x 60cm x 3.15 mm thick, buried directly in ground (earth pit not less than 3.5 m below normal ground level) with top edge of earth plate not less than 2.5 m below normal ground level, connected to copper strip 20 x 3 mm by means of bolts, nuts, check nuts and washers of galvanised iron or steel as shown in electrical plate No 2 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.

All as per item No 41 here-in-before but with galvanized earth plate of size 60cm x 60cmx 6 mm with 32 x6 mm GI strip.

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. Make :- Havells, Finolex, Polycab

All as per item No. 43 above but 2.5 sqmm 6 core copper conductor.

Material of labour for removel 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

Suplying and laying as replacement in sub station fixing 3.3 to 11 KV electrical insulation mat of size 5 mtr x 1 mtr x 2.5 mm thick specification as per IS 15652 2006 .

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.

All as per item No 47 here-in-before but having ratio 200/100/5-5.

All as per item No 47 here-in-before but having ratio 100/50/5-5.

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.

Supply and fixing in replacement of isolating contact assembly suitable for 400/630/800 amps, 11 KV HT VCB complete all as specified and directed

Supply and fixing in replacement of fixed contact block complete suitable for 400/630/800 amps, 11 KV HT VCB complete all as specified and directed

Supply and fixing in replacement of moving contact block complete suitable for 400/630/800 amps, 11 KV HT VCB complete all as specified and directed

Supply and fixing in replacement of spring bearing gear suitable for 400/630/800 amps, 11 KV HT VCB complete all as specified and directed

Supply and fixing in replacement of closing coil assembly 24 volts DC suitable for 400/630/800 amps, 11 KV HT VCB complete all as specified and directed.

Supply and fixing in replacement of tripping coil assembly 24 volts DC suitable for 400/630/800 amps, 11 KV HT VCB complete all as specified and directed.

Supply and fixing in replacement of panel door lock suitable for 400/630/800 amps, 11 KV HT VCB complete all as specified and directed

Supplying & Fixing in replacement auxillary switch (7 No + 7NC) suitable for 400/630/800 amps, 11 KV HT VCB complete all as specified and directed

Supply and fix in replacement TNC Switch for Breaker ON/OFF purpose in HT 11 KV VCB panel including associated wiring, if reqd, for proper functioning of switch complete all as specified and directed.

Supply & Fixing in replacement support rod with screws suitable for 400/630/800 amps, 11 KV HT VCB complete all as specified and directed

Supply & Fixing in replacement support insulator suitable for 400/630/800 amps, 11 KV HT VCB complete all as specified and directed

Supply & Fixing in replacement upper connector suitable for 400/630/800 amps, 11 KV HT VCB complete all as specified and directed

Supply & Fixing in replacement lower connector suitable for 400/630/800 amps, 11 KV HT VCB complete all as specified and directed

Supply & Fixing in replacement only set of 6 Nos fixed arcing contacts suitable for 400/630/800 amps, 11 KV HT VCB complete all as specified and directed

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

Supply & Fixing in replacement MCB 20 to 32 Amps SP.

Supply & Fixing in replacement of MCB TPN ,63 Amp curve 'C', 10 KA .

Supply & Fixing in replacement of Digital Volt meter, Cl-1, Secondary voltage 110 V for 11 KV VCB Control Panel.

Supply & Fixing in replacement of LED indication lamp ( different colour) 24/110 Volts for breaker ON/OFF/TRIP/Breaker Spring Charged/R-Y-B etc for 11 KV control panel/ 33 KV Control Panel including associated wiring, if reqd, complete all as specified and directed.

Supply & Fixing in replacement of vacuum interrupter suitable for 630/800/1250amps, 11 KV HT VCB complete all as specified and directed. Make-CG or equvalent

Supply & Fixing in replacement of hooter suitable for 24/50/110 V , DC for 11 KV VCB Control Panel.

Supplying, installation, commissioning and testing in replacement of PT unit three phase, three limbs, upto 11 KV draw-out type, resin cast dry type, single ratio having primary voltage 11 KV & secondary voltage 110 volts, 50 VA class-1 including necessary bus bar connections & wiring for metering complete all as specified and directed .

Taking out of heavy duty colling fan ,3 phase, 50 Hz of size 24" form power transformer 33/11 KV of capacity 20 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 & re-assembling in same position after repairs & 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.

Material and labour 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 & fixing of in replacement charging motor & gear assembly of 11 KV VCB make CG complete as required & directed.

Material and labour for preparation of painted surface of floor mounted HT control panel for fixing of FLOURCENT REFELCTIVE LETTERING as follows of approved colours all as specified and directed . (a) Re-write the details of HT Control panel,O/G, I/C fedeers, Sl No of HT Panel, CTR etc on the HT panels in capital letters of size not less than 40 mm width and 50 mm height and works not exceeding 70 letters per panel. (b) Numbering of the HT Panels in both front and back side of size not less than 80 mm width and 80 mm height. Name of HT Control panel,O/G, I/C fedeers should be written on backside of HT Panels also as size mentioned para (a) above all as specified and directed by Engr In Charge.

Material and labour for repainting of HT 11 KV VCB panel consisting of not less than 25 Nos VCB/Bus Coupler/Bus trunk of appx size 4-6 sqm with 2 coats of super enamel paint of smoke grey colour or as approved by Engr In Charge over a coat of red-oxide with spraygun all as specified and directed at Shekhawati Grid. Note :- All the accessories , relays mounted on Panel should be covered before painting to protect the paint and remove/ clean the same after completion of painting.

Material and labour for repainting of 33 KV control panel consisting of not more than 5 Nos, Bty Charger panel-2 Nos with 2 coats of super enamel paint of smoke grey colour or as approved by Engr In Charge over a coat of red-oxide with spraygun all as specified and directed at Shekhawati Grid. Note:- All the accessories , relays mounted on Panel should be covered before painting to protect the paint and remove/ clean the same after completion of painting.

Material and labour for replacement of HT cable PVC clamp with nut, blot and washer suitable for 11 KV 1000 sqmm single core , fixed with M S Chanel by making hole if required all as directed and specified by Engr In Charge.

All as per item No 81 above but HT cable of size 400 sqmm 3 core ,33 KV.

Supply and fixing, testing in replacement of Phase over current and earth fault relay with high set, auxiliary supply 24-240 V DC/AC. Make - L&T, Modal No-MC61CNX4000 or equivalent

Supply ,fixing, testing in replacment of WTI (Winding Temparature Indicator) with all accessories having winding temp indicator, max winding temp indicator, setting for alarm/trip suitable for 33/11 KV Transformer of cap 20 MVA complete all as specified and directed

Supply ,fixing, testing in replacment of OTI (Oil Temparature Indicator) with all accessories having Oil temp indicator, max Oil temp indicator, setting for alarm/trip suitable for 33/11 KV Transformer of cap 20 MVA complete all as specified and directed

Supply only Auxiliary switch of cap 10A (DC) , breaking cap 2A(DC) suitable for Isolator terminal kiosk .

Supply and fixing in replacement, Silica Gel Breather assembly incl Silica Gel as existing ,suitable for OLTC of Power transformer of cap 20 MVA complete all as specified and directed.

Supply and fixing in replacement, Silica Gel Breather assembly incl Silica Gel as existing ,suitable for power transformers of cap 20 MVA complete all as specified and directed.

Supply & fixing in replacement of Cross arms, bracings, supports, clamps and back plates or surge tower of 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 , complete all as specified and directed.

Material and labour for Bore earthing 150mm 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 upto the depth of 49mtr and one mtr above the ground level. The pipe electrode should be filled around commericial salt charcoal dust, copper suphate and magnesium phosphate of 30cm layer each upto the full length of pipe. The borewell should have 12mtr 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 60cmx60cm30cm 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.

Disconnecting faulty 33 KV HT cables of different sizes from both ends i.e from tower/panel/yard, 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, re-connections and testing of cables after removal of fault complete all as specified and directed. Note:- (a) 33 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.

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, 33 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.

Supply and fixing 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.

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 XLPE armoured aluminium conductor cable of size 3 core 400 sqmm.

All as per Item No.94 here-in before but indoor type, 120 to 185 sqmm 3 core, 11 KV.

All as per Item No.94 here-in before but indoor type 240 to 300 sqmm 3 core, 11 KV.

Meterial and labour for emergency maintenance work of 33 KV overhead line during breakdown by deploying skilled labour and electricians at faulty site having Gang of minimum 6 persons and tansportation including hydraulic machine and other tools and plant reqired a site for fault rectification. Note:- Contrator of his rep shall come to the site of breakdown within one hour of notification of breakdown. In case the rep or contractor shall not come to the site of breakdown and start attending breakdown within 1.00 hour a penalty of Rs 1000 per fault per hour will be imposed over contactor and will be deduct from his dues.

All as per Item No.97 here-in before but Gang of minimum 3 persons except hydraulic machine.

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, boits etc complete all as specified and directed.

Supply and fixing in replacement lsolators 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.

Supply 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 specifed and directed.

Supply and fixing 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 specified and directed.

Supply and fixing 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.

Supply and fixing 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 towers/yard with Ginuts bolts complete all as specified and directed.

Supply and fixing in replacement 33 circuit breaker clamp 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

Supply and fixing in replacement, Post insulator with hardware fittings, 33 KV Grade, for isolator complete all as specified and directed.

Supply and fixing in replacement, Disc insulators with hardware fittings, 33 KV Grade for 33 KV yard complete all as specified and directed.

Supply and fixing in replacement of pin insulator with hardware fittings 33 KV grade complete all as specified and directed.

Supply and fixing for replacement of aluminium jumper of length upto 2.5 mtr made of ACSR conductor of type Zebra/Dog/Goat/Panther/ Wolf conductor of 33 KV towers/ yard.

Supply and fixing in replacement of damage triple tension disc insulators not less than 160 KN and hardware fitting and fixing in position including tighetning of bolts & nuts, complete after dismentling and lowering of damage conductor/disc insulator by taking tension of conductor on a separate arragement including opening & provinding of jumpers of 33 KV tension towers.

Supply and fixing in replacement for Danger Notice plate of 1.6 mm thick mild steel sheet, vitreous enamelled white , with letters, figures and conventional skull and bobes in signal red colour and fixed with MS clamps, bolts and nuts of approved size, for HT 33 KV, 25 x 20 cm size including taking down old one complete all as specified and directed.

Material and labour for stretching/ tightning of loose ACSR conductor 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.

Material and labour Jointing of ACSR conductor of any type with mid span joint through compression joint machine of 33 KV over head lines.

Trimming and cutting of tree branches (not more than 50 mm girth) coming across 33 KV HT over head line clearing the line around 2m single/both sides and disposal of branches from site not less than 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. (iv) The above quoted rate is included for T & P, hydaulic machine etc.

Supplying and fixing, Stretching, Securing, Connecting & testing of Aluminium Conductor Steel Reinforced (ACSR) of size Zebra/ Dog/Goat/ Panther/Wolf/mink for 33 KV over head lines/33 KV yard / earth for tower to tower complete including taking out old unserviceable conductor complete all as directed and specified by Engr In Charge.

Suplying and fixing as in replacement GI Stranded continous earth wire/ surge wire of 7/2.24 mm on 33 KV steel structures tower/ yard including of special Tools and plant , manpower required at 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 replacement of earth wire 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 execution of work.

Taking out faulty underground 33 KV HT cable of 400 Sqmm by excavatioin and removing RCC cable covers and relaying in the same trenches or re routing after rectification of fault or replacing faulty portion of cable with new cable and removing of surplus soil and using new RCC cable cover as required. Note: (a) 33 KV HT cable & joints shall be measured and paid for seperately under respective items of schedule. (b) Retrieved old serviceable cable cover/bricks will be laid in trenches for cable protection. If extra PCC cover/bricks 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.

Excavation in trenches not exc. 1.5 m wide and not exc 1.5 mtr deep in soft/losse soil) for laying of cables or GI pipe and getting out and levelling of bottom suface to required level 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.

Supply and fixing sub class B bricks having minimum compressive strength 75 Kg/ Sq cm laid in trenches for cable protection etc complete all as directed by Engineer-in-Charge.

Supplying and laying un-reinforced precast concrete cable cover of size Class HV, type 2, for 33 KV flat size 450 mm x 180 mm x 40mm.

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 & labour for PCC 1:4:8 type D-2 using 40 mm graded stone aggregate . in mass concrete and filling complete for foundation of pad of pole all as specified & directed by Enge-in- Charge

Material & labour for PCC 1:3:6 type C-1 using 20 mm graded stone aggregate . in mass concrete and filling complete for foundation of Panel & Transformer yeard, pole/stay/ of pole all as specified & directed by Enge-in- Charge

Material & labour for PCC 1:2:4 type B-1 using 20 mm graded stone aggregate in coping including weather slightly rounded or chamfered angles and throaty and necessary form work complete for pole ,all as specified and directed by Engr-in-charge.

Supply & Fixing in replacement Caution plate “CAUTION MEN AT WORK of size 40cmx15cm made out of white acrylic sheet with Red coloured glow tape.

Material and labour in replacement Retro Reflective installation sign boards of size 5 feet x 4 feet fabricated out of 16 gauge MS sheet ,framed with stainless steel heavy duty pipe of size 50 mm bore duly welded/riveted with MS square pipe of size 25 mm x 25 mm at height 2.00 meter above ground level on stainless steel heavy duty pipe of size 50 mm bore embaded 60 CM in PCC 1:2:4 type B 1 block of size 45cm x 45cm x 60cm including necessary excavation and earth work .The steel portion of the board shall be painted in stove enameled paint and the front & back of the frame shall be overall sheathed with blue colour base painter adhesive tape. The wiriting matter i.e. details of Transformer, location, Sl No, SM No etc. will be in English language on both sides with reflective adhesive painter tapes all as directed and specified by Engineer -in-charge.

Material and labour for Schematic diagram network of Shekhawati Grid as follows:- (a) The diagram board should be not less than 6' x 4' x 6" (b) The structure should be made of framed by angle iron 25 mm x 25 mm x 1.4mm (c) The top sheet should be white acrelic sheet and rear sheet should be not less than 1.5 mm thick MS sheet. (d) 04 x 20 watt LED tube light fitted inside the diagram alongwith complete wiring with controlling switch. (d) It should be hanged on the wall by drilling and fixing as directed. (e) Min 10 mtr PVC sheathed wire 1.5 sqmm 3 core .

Supply and fixing on pole/ wall in replacement of old unsv street light (any type) with LED street Light fitting of capacity 70 watt, IP 65 complete all as specified and directed.

Supply and fixing on pole/ wall in replacement of old unsv flood light light (any type) with LED flood Light fitting of capacity 120 watt, IP 65 complete all as specified and directed.

Material and labour for replacement of antistatic flooring of thicknes 2.5 mm thick of standered width and roll length confirming to STEC-7 pamplet elctrostatic decreeses less than 0.5 sec and fixing with adhesive SR 998 Comp strip of grid 1 m x1m xsize 1 inch x 50 microne complete all as specified and directed .

Material and labour for brick work for sub class 'B' bricks straight or cruved on plan exc 6 mtr mean radius built in cement mortor 1:4 complete all as specified .

Disconnecting LT connection, junction box ,taking down steel tubular Pole ,9 metres long carefully by excavation, after demolition of PCC and Material & labour for shifting of to another place as directed complete with cast iron base plate all as specified . Note :- The above quoted rate is included for T & P , man power etc. The necessary earth work and PCC work will be measured and paid separately under respective items.

Supplying , transporting, erection,testing and commissiong of 36 KV, 1800 MVA, 33kV, 1250A, 50Hz voltage class outdoor live tank 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 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 :-

(a) Installation -Outdoor,3-pole, Live-Tank, Porcelain Clad, Switchyard Breaker (b) Rated Voltage - 36 KV (c) Rated Current - 1250A or higher (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 (-1 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)-80 KAP (l) Short time carring capacity for -1 Sec -31.5KA rms (m) Out of phase breaking capacity (KA rms) as per IEC (n) Rated operating duty as per IEC(o) Temp rise over the design ambient temperature -As per IEC 62271-100 (r) Operating Mechanism -Spring (s) Creepage distance as per IEC-900mm (t) No of trip/close coil 50 V DC-02 Nos (u) Tripping system - 50 V DC (v) Closing spring is charged by a motor in less than 15 seconds. (w) Mechanical/electrical anti-pumping. (x) Provision for manual charging. (y) Pushbutton provided for manual closing and triping. (z) Mechanical 'ON-OFF' and 'Spring Charged' indication. (aa) Auxiliary switch : 6 No + 6 NC. (ab) Additional triping solenoid(Optional), (ac) In-built spring charging handle. (ad) Extended coil reliability due to continuous rated capacity.

Note : - Cost of supply , installation on existing structure,servicing/ connection with outdoor type Terminal Kiosk with new provision complete all as required at site deemed to be included in the quoted rate. Above quoted rate is inclusive of taking down the existing VCB and deposited to the store.

Supply, laying, jointing, testing and commissioning in replacment of LT underground cables 1100 volts grade, PVC insulated XLPE and PVC sheathed, heavy duty armoured, with multistranded aluminium conductors, IS-7098, Part-II marked, laid in trenches/ duct/ under road/ footpath/ etc complete all as specified and directed of size 25 sqmm 4 core.

Supply, installation and testing of Numerical Relay draw out type in replacement of any type relay, 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 & 500 event record with time stamping, (iii) 4 analog input, 8 DI & 8 DO, (iv) Communicable on IEC61850 protocol, (v) Disturbance recording upto 1200 cycles, (vi) Self supervision function.

Supply, installation and testing of Numerical Relay draw out type in replacement of any type relay, 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 & 500 event record with time stamping, (iii) 4 analog CT & 3 PT input , 8 DI & 8 DO, (iv) Communicable on IEC61850 protocol, (v) Disturbance recording upto 1200 cycles, (vi) Self supervision function. Make- C&S/ Siemens/Schneider Note for item No 136.00 & 137.00 :- (i) The relay shall be fully integrated with the feeder, internally capturing feeder statuses if available including Breaker On, Off, Spring Chrged, Test, Service, AC-Fail, DC supervision relay, Trip circuit healthy relay, inter panel tripping, Master trip relay, local remote and display the same locally on a built-in LCD screen and suitably labeled status LEDs. (ii) Relay shall have facility to locally Trip/Close the breaker as a backup to TNC switch provided separately on the panel.The relay should be suitable for auxiliary supply 24-150 volt DC. (iii) The relay shall be fixed on new 2mm CRCA sheet of matching existing VCB panel color and suitable size covering all blank space or cutting the sheet of panel for installation the same, formed by removing old mechanical type IDMT relay or any type complete including associated wiring and integration with existing HT VCB panel complete all as specified and directed. The quoted rate is included for new sheet of cutting the sheet.

Supply & Fixing in wall of sub stn, in replacement of Exhaust Fan of size 450 mm sweep,1400 RPM, copper wounded with MS blade complete with louver all as specified and directed.

Supply & Fixing in replacement spout insulator (for Bus bar/ feeders) suitable for 400/630/800 amps, 11 KV HT VCB complete all as specified and directed.

Rajindera Enterprises

DS CONSTRUCTION

mayur enterprises

Ish Engineers and Contractors

MV Engineers And Contractors