REPAIR MAINT TO 11KV HT AND LT DISTRIBUTION SYSTEM HT PANELS SPLIT HT BOOSTER POWER AND DISTRIBUTION TRANSFORMER CALIBRATIONS OF PROTECTION SYSTEM AT 8 FBSU AF STN AWANTIPUR

Amount

Relaying of old serviceable cable retrieved from serial Item No 2,3 & 4 at any site complete all as specified and directed

Supplying, laying, jointing and testing LT underground cable, heavy duty, 1100 Volts, XLPE insulated and sheathed, armoured with multi-stranded aluminium conductor cable , laid in trenches/ducts or fixed to poles/walls or laid under roads/paths/drains/culverts duly encased in galvanised steel pipe of suitable sizes incl taking out old underground serviceable/unserviceable cable all as specified and directed of following sizes:-

(a) 150 Sqmm 3.5 Core

(b) 120 Sqmm 3.5 Core

(c) 95 Sqmm 3.5 Core

(d) 70 Sqmm 3.5 Core

(e) 50 Sqmm 3.5 Core

(g) 25 Sqmm 4 Core

Supply laying and testing XLPE insulated screened PVC bedded, galvanized steel strip or wire armored heavy duty 11000 Volts grade with stranded aluminium conductor 6.35KV (UE)/11KV(E)grade of size 120 Sqmm 3 core incl taking out old underground serviceable/unserviceable cable.

Supply laying and testing XLPE insulated screened PVC bedded, galvanized steel strip or wire armored heavy duty 11000 Volts grade with stranded aluminium conductor 6.35KV (UE)/11KV(E)grade of size 240 Sqmm 3 core incl taking out old underground serviceable/unserviceable cable. Note for Serial item No 1 to 4:- Exevation and earth work will be measured and paid superatly under serial item No 46 of Sch 'A'.

Material and labour for sand cushioning to under ground cable provided with a layer of sand 8 cm depth before laying of cable and 15 cm depth after laying and stretching the cable all as specified and directed.

Supply and laying brick covering with width equal to length of brick as mechanical protection to cable using sub class ‘B’ bricks laid flat, size 230mm x 115mm x 75mm, complete all as specified and as directed.

Material and labour for cutting of bitumen road/PCC road/hard standing for laying of GI pipe and passing of cable including making good to disturbed surface with PCC 1:4:8 and matching with existing surface complete all as specified.

Taking out old rusted GI pipe and S&F tubing 'light grade' galvanised iron with all fittings and fixed to poles, walls etc. with flat iron clamps/bolts/nuts/washers or laid in floors/under roads complete all as specified and directed of the following bores

100 mm bore

80 mm bore

50 mm bore

40 mm bore

Supply and fixing in replacement of MCCB 3 Pole, 415 vots AC, 50 Hz with adjustable thermal fixed magnetic setting complete including carrying out modification in existing panel to fixed MCCB all as specified of following rating

320 Amps, 36 kA.

250 Amps, 36 kA.

200 Amps, 25 kA.

160 Amps, 25 kA.

100 Amps, 25 kA.

63 amps, 10 kA.

Supply and fixing in replacement of MCCB 4 Pole, 415 vots AC, 50 Hz with adjustable thermal fixed magneticsetting complete including carrying out modification in existing panel to fixed MCCB all as specified of following rating:-

250 Amps, 36KA

200 Amps, 36KA

Material and labour for in replacement for aluminium thimble of size 25 Sqmm Make- ISI Mark

All as per item no 11 here in before but of size 35 Sqmm

All as per item no 11 here in before but of size 50 Sqmm

All as per item no 11 here in before but of size 70 Sqmm

All as per item no 11 here in before but of size 95 Sqmm

All as per item no 11 here in before but of size 120 Sqmm

All as per item no 11 here in before but of size 150 Sqmm

All as per item no 11 here in before but of size 185 Sqmm

All as per item no 11 here in before but of size 240 Sqmm

All as per item no 11 here in before but of size 300 Sqmm

Material and labour for cable jointing kit for 11 KV (earthed) grade cable for outdoor type termination heat shrink type joint complete with jointing material and allied accessories suitable for 3 core XLPE/ PVC armoured aluminium conductor cable of size 240 sqmm complete, all as specified and directed by Engineer-in-Charge.

Material and labour for cable jointing kit for 11 KV (earthed) grade cable for staight through heat shrink type joint complete with jointing material and allied accessories suitable for 3 core XLPE/ PVC armoured aluminium conductor cable of size 120sqmm complete, all as specified and directed by Engineer-in-Charge.

Material and labour for straight through joints suitable for armoured XLPE cable 1100 KV rating heat shrinkable type complete with jointing accessories including cutting of faulty cable of following sizes complete all as specified:-

(a) 150 sqmm to 185 sqmm, 3.5 core

(b) 70 sqmm to 120 sqmm, 3.5 core

c) 35 sqmm to 50 sqmm, 3.5 core

Dismantling air break gang operated switch vertical/horizontal mounted including insulators and operating mechanism for replacement and removal from site all as directed by Engineer-in-Charge

Supply and fixing air break, gang operated switches ,11KV, triple pole,vertically mounted type, mechanically operated, mounted on mild steel channel with operating mechanism, worked from ground level, for current rating upto 200 Amps with drop out fuse element of required capacity,GOD/switch having 100 MVA rating at 11 KV and 12 insulators suitable for 11 KV,50 C/s including mounting on HT poles, making neccesary electric connections and testing complete all as specified and directed.

Material and labour for replacement of HT bush rod complete with HT bushing and bush rod of size (15-20)mm Ø comprising of the required nut along with check nut complete as per sample.

Material and labour for replacement of HT bush rod complete with HT bushing and bush rod of size 25mm Ø comprising of the required nut along with check nut complete as per sample.

Material and labour for replacement of LT bush rod complete with LT bushing and bush rod of size (20-25)mm Ø comprising of the required nut along with check nut complete as per sample.

Supply and fixing breather assembly complete with silica gel crystal impregnated with cobalt suitable for any model of transformer rating 50 to 160 KVA to air column of conservator tank complete, all as specified and directed by Engr-in-Charge.

Description al as per Srl items No 29 here-in-before but for transformer rating 200 KVA upto 350 KVA complete, all as specified and directed by Engr-in-Charge

Description al as per Srl items No 29 here-in-before but for transformer rating 400 KVA upto 500 KVA complete, all as specified and directed by Engr-in-Charge

Supply and filling transformer oil to top up with BDV not less than 50KV in electrode gap of 5mm in first tripping, having low viscosity for filling or replacing the old oil complete, all as specified and directed by Engr-in-Charge.

Taking proper shut down and disconnecting up the LT and HT electric mains from transformer of capacity 50 KVA to 160 KVA removing the lid/cover for inspection at site and to facilitate minor repairs after draining out the transformer oil reassembling the transformer, refilling the transformer oil (new of old) installing, commissioning and testing at site complete all as specifed. Note :- All the parts required to be replaced shall be measured and paid separately.

Description all as per Srl item No 33 here in before but for transformer of capacity exceeding 200 KVA to 350 KVA.

Taking proper shut down in writing and disconnecting the LT and HT electric mains from transformer of capacity 50 KVA to 160 KVA removing the transformer from pole structure/platform shifting to authorised workshop after draining out the transformer oil at site, dismantling and disconnecting damaged HT/LT coils to facilitate necessary repairs, rewinding/reconditioning, changing of gasket & re-assembling the transformer bringing back to the site, refilling new or dehydrated old oil connecting with existing electrical system of HT and LT electric mains including testing complete, all as directed by Engineer-in-Charge Note :(i) Winding wire and other items mentioned in Sch ‘A’ will be measured and paid separately in respective schedule. (ii) Placing /removing standby transformer in the place of defective transformer under repair will be the responsibility of the contractor, including transportation and man power Standby transformer will be provided by the deptt

Description all as per Srl item No. 35 here-in-before but transformer of capacity exceeding 200 KVA to 350 KVA.

Material and labour for rewinding of HT coil conforming to the original winding of the transformer of any make/capacity with super enamelled cooper wire/strip of appropriate gauge and turns including allied materials such as insulation, varnish etc complete, all as specified and directed by Engr-in-Charge.

Material and labour for Top gasket sheet made out of cork sheet with suitable GI bolts, nuts, washers for transformer top cover complete for transformer of any cap all as specified and directed by Engr-in-Charge.

Dehydration and Filteration of existing serviceable oil in the transformer till it acheive dielectric strenght not less then 35KV in first tripping after dehydration with minimum electrode gap 5mm using dehydration plant complete, all as specified and directed by Engr-in-Charge

Repair to 11KV 2.5MVA HT Booster comprising of following jobs:-

Isolating 11 KV 2.5 MVA voltage regulator from existing electric circuit and disconnecting all 11 KV/440 volt internal electric cables from dimmer and booster unit to faciliate the repairs work.

Draining out the transformer oil from the complete unit and storing in safe container (Approximate qty of transformer oil 2000 Ltr)

Taking out the booster unit from the container by means of any type of lifting arrangement to carry out the repairs work and refixing the same after replacement of burnt out/unserviceable accessories.

Material and labour for replacement of synchronous motor assembly including making connection and inspection of same for free movement make and capacity of the motor is as per sample.

Material and labour for replacement of limit switch.

Material and labour for replacement of carbon roller of boosting unit as per sample and testing the same for its free movement

Material and labour for replacement of PC card as per existing in the unit including replacement of wiring of control circuit and male and female assembly.

Cleaning the complete booster unit with cleaning agent of winding and removing all the unwanted materials between the winding , replacement of insulating tapes and solderiing the interconnection strip . Drying the windings before lowering in the container.

Making all the internal 11KV/440 Volts connection in proper manner including replacement of thimble where required in proper manner with buck transformer and dimmer unit after checking the polarity of cables connection as per the arranged system.

Carrying out the testing of cable connection before connecting the electric circuit.

Making the 11 KV connection with the voltage regulator and testing the same onload to the satisfaction of Engr-in-charge.

Complete servicing of 33KV VCB type OVR and programming relay make ABB type of relay PCD 2000/16KA cat 8R3E-2021-21-3001 operated on 48 volt DC having control mechanism relay SD type -2. Relay to be calliberated for operation of OVR as per overcurrent fault. Repair to protection circuit of OVR including complete wiring connection as per drawing No. IB09909 including programming of OVR relay from authorized Engineer of ABB. (Note:-Rate for any protection circuit repairs to make the VCB functional deemed to be included in this item)

Complete servicing of control panel installed for 33KV VCB outdoor by rewiring of control circuit and provision of following relays in replacement:-

Master trip relay 86 model Type PQ8n CH2JS Art No. 1MYN563613-PAD, Sr No. V10-79886 of Make:- ABB

Auxiliary relay Make 30CD Type CV2D2J Art No. 1MYN563627-DBB, Sr No. S10-96630 of Make:- ABB

Auxiliary Relay30AB Type CV2D2J Art No. 1MYN563627-DBB, Sr No. S10-96614 of Make:- ABB (Any accessories required for relay repair deemed to be part of Job)

Material and labour for battery bank comprising of lead acid battery 2 Volts 40AH - 24Nos housed in steel compartment based on with and including angle Iron frame made out of 30x30x4mm of sizes complete all as specified and directed by Engr-in-Charge

Cleaning the existing exposed surfaces of steel tubular pole 11 Metre long including cross arms, brackets, clamps etc including scraping the worn out paint and making the surface smooth and painting with two coats of synthetic enamel paint (aluminium shade), marking five black & white bands at lower portion of pole, each 300 mm wide alternatively including marking pole No. with yellow paint on black base at suitable height complete all as specified and directed.

Removing excavated material not exceeding 50 mtr and depositing where directed in a level not exceeding 1.5 mtr above the starting point of any type of soil complete all as specified

Excavation in trenches not exceeding 1.5 Mtr wide and not exceeding 1.5 mtr in depth in soft/loose soil for laying of cables or other items and getting out complete all as specified. Note :- Earth work for serial item No 1 to 4 will be measured and paid under this item.

Returning filling in including spreading levelling watering and well ramming in layers not exceeding 25 cm complete all as specified.

M/s Jaipal Associates

M/S Sky Engineers