REPAIR AND MAINTANANCE OF VCBS, RMUS AND TRANSFORMERS AT DOMESTIC AREA AND SITE 1A AND 1B AFS JODHPUR

Amount

M &L for replacement of 33KV jumpers by DOG conductor at pole by new one, with PG clamp including nuts and bolts / connector for fixing / tightening two conductor of equal or unequal size as directed by Engr-in charge.

M &L for replacement of 11KV jumpers by Weasel conductor at pole by new one, with PG clamp including nuts and bolts / connector for fixing / tightening two conductor of equal or unequal size as directed by Engr-in charge.

Material & labour for Repair and maintanance of relay set (O/C and E/F relays) of any make for 11KV VCB/RMU panel, removing and refixing (the contacts NO+NC should be cleaned by CTC solution and adjust if electromagnetic) with faulty part replaced and calibrate the relays by relay testing kit & proper setting as per reqd load & time delay and fixing the relay set in HT panels complete all as specified and directed by Engr-in-charge. Notes :- (i) Testing shall be carried out by primary and secondry injection kit. (ii) Spare parts shall be measured and paid separately under supply only. (iii) The tripping system should be in accordance with the incomer of the affected feeder and setting should be maintained such that fault does not carry beyond the particular feeder due to overload, 3 phase fault, earth fault etc. (iv) The VCBs/RMUs are installed at CPH, Tech area, 33 SU Site 1A & SITE 1B and VCBs are of different type of makes installed at site like Crompton Greaves, Alstom,Schneider, Ashida, Siemens,L&T, C&S or any other of relays available on the site.

Material & labour for Repair and maintanance of 11 KV HT RMU indoor/outdoor type, EACH WAY of RMU 400/630/800 Amp rating from HT Panel after switching off electric supply. Removal of all the possible mechanical/electrical/control system for proper functioning e.g. spring charge system, triping system, indication system, including checking the quality of insulating material, complete & refixing with faulty part replaced blowing out dust and applying the proper lubrication/ greasing and reassembling the including motorised operation and connection to HT panel & filling of gas (if quantity is lesser than required) and make the RMU functional to the entire satisfaction and as directed by the Engineer-in-charge. Notes :- (i) The RMUs are installed at CPH, Tech area, 33 SU Site 1A & SITE 1B and VCBs are of different type of makes installed at site like Crompton Greaves, Alstom, Areva, Schneider,Siemens,C&S, etc. (ii) Spare parts if replaced & if Gas filled shall be measured and paid separately under supply only items.

Supply only SF6 gas suitable for HT33/11 KV RMU/VCB complete all as directed by Engr-in-charge.

Supply only trip/closing coil suitable for HT, VCB/RMU, operating on 24/110 volt system and testing complete all as directed by Engr-in-charge.

Supply only DC contactor operated on 110 / 24 volt system suitable for working of HT VCB/RMU complete all as directed by Engr-in-charge.

Supply only Motor cut off limit switch sutable for HT 11 KV VCB/RMU complete all as directed by Engr-in-charge.

Supply only Push Button element with one NO / NC complete all as directed by Engr-in-charge.

Supply only Spring charging handle suitable of VCB/RMU charging as per sample all as specified and directed by Engr-in-charge.

Supply only TNC switch with wiring suitable for 11 KV VCB complete all as directed by Engr-in-charge.

Supply & testing of spring charging mechanism with motor for outdoor/indoor type, 11KV, VCB/RMU,operated on 230/110/24 volts DC,with charging time less than 15 sec of approved rating complete all as specified and directed by Engr-in-Charge.

Supply and fix in repair multifunction meter with digital display suitabale for measuring 11 KV electrical parameters( Voltage, Amp, power factor, frequcncy. Kwh, harmonics upto 31 level) complete all as specified and directed

Supply only Auxiliary switch 6 NO/6NC complete all as directed by Engr-in-charge.

Supply & fixing in replacement indication lamp (LED type) Red or Yellow or Green colour suitable for 110 volts AC / 110 volt DC / 30 volts DC (as required at site) complete all as specified and directed by Engr-in-charge.

Supply and fix in replacement of Power Pack for 11 KV VCB/RMU suitable for incoming supply 220 volts AC and output 110/24 volts DC supply all as per existing with wiring complete all as directed by Engr-in-Charge. Note : - The contractor has to visit the site to check the existing system of 11 KV VCB/RMU for installation of power pack unit.

Testing/Servicing of Transfromer 33/11 KV, up to 5 MVA Cleaing of power transformer 33/11 KV, outdoor type externally included all accessories (such as conservator tank, marshaling box, bushings, bucholz relay radiator, bushing,oil level indicator ) complete and checking the incoming and outgoing termianl connection complete with the following testing. (i) Transformer oil dielectric strength (BD voltage) test (ii) Buccholz realy alarm and trip testing (iii) Oil temperator alarm & trip testing (iv) winding tempreture alarm & trip testing (v) Meggar testing between HV to earth (vi) Meggar testing betweeen LV to earth) (vii) meggar testing between HV to LV (viii) earth resistenace test of transformer neutral. (ix) earth resistence test for body earthing

Repairs to the leaks of transformer from tap switch/ fins/ any pats of body, by replacing gasket / seal , or Repairs to the leaks of transformer body / fins, by welding / brazing etc complete all as specified and directed.

M & L for replacement of defective silica gel breather with silica gel complete set upto 630KVA

M & L for replacement of LT bushing of brass with neoprene rubber bush for Transformer upto 630KVA capacities.all as directed by EIC

M & L for replacement of HT bushing of brass of transformer of any capacity upto 630 KVA.all as directed by EIC

Suply only Silica gel complete all as specified and directed by engineer -in- charge

Supply & filling of transformer oil in site for toping up the level of oil having dielectric strength between 55-65 KV during filling after initial filtration of any capacity complete all as specified and directed by engineer -in- charge.

M & L for dehydration /filtration of transformer oil in existing pole mounted/floor mounted transformer/Voltage stabilizer with the help of dehydration/filtration machine to achieve the dielectric strength of transformer oil not less than 50 KV all as directed by EIC Note:- (i) Dehydration/filtration machine will be arrange by the contractor and he will make his own arrangement and to carry the machine at various sub stations including vehicle and towing arrangement. The rate shall be inclusive of all above.

Dismantling of cross arms / bracing supports / clamps / back plates or any other structural steel sections including removing nuts bolts washers etc

M & L for cross arms, bracing supports, clamps back plates angles fabricated from the structural steel section including bolts, nuts, washers, welding, bending, drilling holes for bolts, bent to any required shape of size as indicated or directed, inclusive of one rimer coat and two coats of aluminium paint after preparation of surfaces.

Dismantling & taking down, old, defective, weak insulator, any type, any size any shape (pin / shackle / loop ).

S & F pin type insulator porcelain vitreous white / brown / green including one galvanised mild steel spindle, two galvanised iron washers, one galvanised iron nut, suitable for 11000 volts grade & of size 150 mm dia and 150mm height.

S & F pin type insulator porcelain vitreous white / brown / green including one galvanised mild steel spindle, two galvanised iron washers, one galvanised iron nut, suitable for 33000 volts grade.

Dismantling & taking down old, deteriorated, switch air break and supply and fixing switch air break gang operated triple pole mechanically operated horizontal/vertical type mounted on insulator & steel frame, with operating mechanism worked from ground level for current rating upto 200 Amps horizontal type suitable for 11000 V. grade all as specufied and directed.

Dismantling & taking down old, deteriorated, expulsion fuse assy and supply and fixing expulsion fuse single pole (drop out fuse) mounted on insulator & steel frame 100 Amps for 11000 V grade.

M&L for servicing and greasing of mechanical parts of existing 33/11KV horizontal/vertical type GOD including replacement of parts i.e Male/female contact, jumper ,operating mechanism, GOD rod etc specified and directed by Engr-in charge

Trimming/cutting the tree branches/ bushes around theHT over head line and making safe clearance up to 4.00 metre distance from line wire/panel all as directed by Engineer-in-Charge.

M&L of checking of HT 11/33KV cable of any size by means of HT Cable Fault Locator Machine by requisition for removal of HT cable faults including necessary excavation work complete all as specified and directed

Supply and fix in repair cable joint kit for 11 KV grade cable for indoor termination Heat shrinkable type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium cable of size 95 sqmm complete all as specified and directed by the Engineer - in - Charge.

Supply and fix in repair cable joint kit for 33 KV grade cable for outdoor termination Heat shrinkable type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium cable of size from 240 to 300 sqmm complete all as specified and directed by the Engineer - in - Charge. Make : M-Seal/CCI/Siemens/Denson/Birla-3M/Raychems/Y-Denson/ RPG/ Yamuna Gases & Chemicals/Mohindera & Mohindera.

Supply and fix in repair cable joint kit for 11 KV grade cable for outdoor termination Heat shrinkable type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium cable of size 95 sqmm complete all as specified and directed by the Engineer - in - Charge.

Supply and fix in repair cable joint kit for 11 KV grade cable for outdoor termination Heat shrinkable type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium cable of size from 120 to 185 sqmm complete all as specified and directed by the Engineer - in - Charge.

Supply and fix in repair Cable joining kit for 11 KV (Earthed) grade cable for straight through Heat shrink type joint complete with joining material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 95 sqmm complete including digging if required all as specified and directed by the Engineer - in - Charge.

Supply and fix in repair Cable joining kit for 11 KV (Earthed) grade cable for straight through Heat shrink type joint complete with joining material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 120sqmm to 185 sqmm complete including digging if required all as specified and directed by the Engineer - in - Charge.

Supply and fix in repair Cable joining kit for 33 KV (Earthed) grade cable for straight through Heat shrink type joint complete with joining material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 240sqmm to 300 sqmm complete including digging if required all as specified and directed by the Engineer - in - Charge.

Taking out old HT U/S cable of any size and any type as directed by Engr-in-charge.

Supply and fix in trench/wall / pole XLPE insulated PVC sheated armoured heavy duty HT electric cable with aluminium stranded conductor 11000 volt grade of sizes 95 Sqmm 3 Core complete all as specified and directed.

Supply and fix in trench/wall / pole XLPE insulated PVC sheated armoured heavy duty HT electric cable with aluminium stranded conductor 33000 volt grade of sizes 300 Sqmm 3 Core complete all as specified and directed.

M&Lin replacement of ACSR conductor for 33KV or 11KV overhead line complete all as specified and directed by the Engineer - in - Charge.

Surface cleaning/site clearance n exc 15 cm in depth in Sub stations area, trenches,sub station rooms, two pole/ four pole structure surroundings to make a over all presentable condition all as directed by Eng In charge.

.Supply and lay stone aggregate of size 40mm graded layed on ground of yard/ two/four pole structure complete all as specified and directed.

M&L in repair for earthing complete with GI earth plate electrode 60cmx60cmx6mm thick, buried directly in ground (earth pit not less than 2.25 metres deep below ground level) with top edge of the plate not less than 1.5m below normal ground level, connected to and including GI earth strip 32*6 mm by means of bolts, nuts, check nuts and washers of galvanized iron or steel all as shown in electrical plate No 3 of SSR Part-I connected to earthing test point all as specified or indicated including testing on completion and excavation and earth work in any type of soil, PCC 1:3:6 type C1 in chamber, precast RCC cover 50mm thick in cement concrete 1:2:4 type B1, reinforced with welded steel wire fabric or XPM (Weight not less than 4 Kg/Sqm) with cast iron frame, funnel with wire mesh, 20mm bore GI pipe medium grade watering pipe, lugs, 40mm bore GI pipe medium grade protection pipe upto 7.5m as directed.

Material & labour for Painting of all 2 pole/ 4 pole structure according to MES colour coding such as pole, structures,angle, GO DO etc at Swicthyard complete all as specified and directed by engineer -in- charge

Material & labour for Repair,Manitenance of 11KV HT Capacitor bank outdoor/Indoor type complete including the following (a) Checking the serviceability by Meggaring of each capacitor unit of any capacity.(b) Replace lugs/jumpers/insulation and blowing out dust and applying the proper lubrication/ greasing with AP-3 grease including connection to HT panel and make the capacitor bank functional to the entire satisfaction of Engineer-in-charge. .

Supply, installation, testing and calibration of relay 110/24V of Microprocessor based three phase relay system to overcurrent, one earth fault protection type for 11 KV breaker, setting range suitable for over current and earth fault with necessary wiring/fitting including dismantling of old IDMT or unserviceable relays.The setting of the relay should be in accordance with the incomer and setting should be maintained such that fault does not carry beyond the affected feeder in case of Overload,3 phase fault, earth fault etc complete all as specified and directed by the Engineer-in-Charge. Note :- The calibration of relay of Microprocessor based three phase relay system required to carried out at CPH. Make C&S model no. CSENex-I 150/CSDPR-V2-200--D-L-N in equivalent Schenider, Siemens. (ii) The calibration of relay of Microprocessor based three phase relay system to be carried out by OEM representative.

Supply and fix in replacement of power factor improvement capacitor oil immersed three phase static 12 KV capacitor with manual control 50 KVAR complete will all insulation for terminals as directed by EIC.

Supply and install in repair 33 KV single phase outdoor oil cooled CT of ratio 150-75/5-5 Amp class 1.0-5P10 burden 15 VA insulation level 70/170 KV including rewiring of CT complete all as specified and directed.

Supply and installation in repair of 33 KV single phase out door oil cooled PT of ratio 33 KV/rt3/110 V/rt3/110V/rt3,Class 0.5-3, Burden 50 VA – 50 VA including rewiring of PT as directed

Material & labour for two coat of Aluminium Painting MS angle of 5MVA and 01 MVA Yard at CPH such as structures,angle, GO DO etc at Swicthyard complete all as specified and directed by engineer -in- charge

Shri Electrical Enterprises

M/S SHREE AAINATH ENTERPRISES

Nvimal Engineers and Contractor