Electrical Maintenance of 11 KV Substation and machineries at NDDP for the year 2024_2025

Amount

Removal of Tube light fitting/CFL fitting from the ceiling/wall for complete wiring, testing and refixing to the original position (1/2x40W, 1/2x9/11/18W CFL)

Rectification of faults like earth fault, loose connections/contacts, changing of defective wires in 150/250W MV/SV fittings mounted on the perimeter wall of various buildings.

Rectification of faults like earth fault, loose connection / contacts, changing of defective wires or Replacement of accessories in fittings mounted in the high bay areas.

Rectification of faults like earth fault,loose connection / contacts, changing of defective wires or Replacement of accessories in street light fittings mounted in RCC poles

Maintenance of 4/6 way power and lighting distribution boards as per the scope of work and as directed by the Engineer-in-charge.

Maintenance of 8/12 way power and lighting distribution boards as per the scope of work and as directed by the Engineer-in-charge.

Maintenance of street light junction boxes mounted on the street light poles as per the scope of work and as directed by Engineer-in-charge.

Cleaning of external surfaces of tube light fittings / ceiling fans / wall mounting fans in its position without removal

Dismantling and painting of ceiling / pedestal / wall mounting / Exhaust fans (single phase) as per the scope of work and as directed by the Engineer-in-charge.

Overhauling and servicing of ceiling / pedestal / wall mounting / Exhaust fans (single phase) as per the scope of work and as directed by the Engineer-in-charge.

Attending complaints in various type of fans ceiling / Exhaust / Pedestal / Wall mounting etc. as per the scope of work.

Preventive maintenance check of single phase motors upto 2 H.P. rating as per the scope of work and as directed by the Engineer-in-charge.

Preventive maintenance checkof 3 phase motors upto 12.5 H.P. rating as per the scope of work and as directed by the Engineer-in-charge.

Preventive maintenance check of 3 phase motors upto 15 to 35 H.P. rating as per the scope of work and as directed by the Engineer-in-charge.

Preventive maintenance check of 3 phase motors upto 35 to 75 H.P. rating as per the scope of work and as directed by the Engineer-in-charge.

Preventive maintenance check of 3 phase motors of 375 H.P. rating as per the scope of work and as directed by the Engineer-in-charge.

Preventive maintenance check of 3 phase HT motors of 200/315 KW rating and 180 KVA Generator as per the scope of work and as directed by the Engineer-in-charge.

Greasing of various motors

Cleaning of single phase motors upto 2 H.P.

Cleaning of 3 phase motors upto 12.5 H.P.

Cleaning of 3 phase motors from 15 H.P to 35 H.P

Cleaning of 3 phase motors above 35 H.P to 75 H.P

Cleaning of 3 phase motors 375 H.P

Cleaning of H.T. Motors (200KW/315KW)/180 KVA Generator

Maintenance of SF units/Control gears of various equipments as per the scope of work and as directed by the Engineer-in-charge.

Maintenance of Push button station for 1 motor control as per the scope of work and as directed by the Engineer-in-charge.

Maintenance of Push button station for 6 motor control as per the scope of work and as directed by the Engineer-in-charge.

Cleaning of external surface of each vertical panel of power panels/control panels as per the scope of work and as directed by the Engineer-in-charge.

Maintenance of each vertical panel of power/control panels including cleaning, checking tightness of power and control terminations as per the scope of work and as directed by the Engineer-in-charge.

Maintenance of Vacuum / Air circuit breakers as per the scope of work and as directed by the Engineer-in-charge.

Maintenance of Lead-Acid type batteries as per the scope of work and as directed by the Engineer-in-charge per cell

Maintenance of VRLA type batteries as per the scope of work and as directed byt he Engineer-in-charge per cell

Cleaning of external surface of 2 MVA power transformer and Neutral Grounding Resistor panel

Cleaning of external surface of 250KVA power transformer.

Maintenance of 2 MVA power transformer & Neutral Grounding Resistor including cleaning, checking tightness of power terminations and as per the scope of work.

Maintenance of 250KVA power transformer including cleaning, checking tightness of power terminations and as per the scope of work.

Maintenance of earth pits as per the scope of work.

Maintenance of bus ducts in NDDP substation as per the scope of work and as directed by Engineer-in-charge.

Supply and installation of L&T or equivalent make Auxiliary contactors with 4 NO + 4 NC and 230 VAC coil in various electrical feeders and equipment as directed by the Engineer-In-Charge

Supply and installation portable temporary power distribution board consist of energy meter (EM1000) with suitable Current transformers, 250 Amps 4pole SFU 1 no as incomer, 63 Amps,4 pole RCBO 3 no as outgoing, 32 Amps,4 pole RCBO 3 no as outgoing, 32 Amps,2 pole RCBO 3 no as outgoing, 63 Amps 5 Pin Industrial plug & socket 3 no's, 32 Amps 5 Pin Industrial plug & socket 3 no's, 32 Amps 3 Pin Industrial plug & socket 3 no's installed in Metal/FRP/GRP enclosure with Rain hood and stand for free standing on floor and as directed by the Engineer-In-Charge.

complete supply of material and execution of copper plate earthing with Brass bolt and nuts and brazing. Copper Plate Earthing size of 600mm X 600 mm with a thickness of 3mm. This shall be installed in a pit of size 900mm X 900mm and backfilled with homogenous mixture of charcoal and Salt. Including RCC inspection chamber and RCC cover. Earth pit construction shall be as per IS 3043:2018 and Joining through brass nut bolt and brazing.

Supply of M.Seal

Supply of 6 module PVC front plate suitable for Modular switches

Supply of 63 Amps, 4 pole , 30mA RCCB

Supply of white PVC 6 modular open surface box of 75 mm depth suitable for Modular switches.

Supply of 6 A One-way switches in the existing M.S. switch boxes with the same brand and specification

Supply of 16 A One-way switches in the existing M.S. switch boxes with the same brand and specification

Supply of 6A, 3 pin shuttered sockets in the existing M.S. switch boxes with the same brand and specification

Supply of 16A, 3 pin combined shuttered sockets in the existing M.S. switch boxes with the same brand and specification

Supply of 12 module PVC front plate suitable for Modular switches

Supply of white PVC 12 modular open surface box of 75 mm depth suitable for Modular switches.

Supply of 1 ph, 230V, 50Hz, 380 mm dia heavy duty industrial type exhaust fan. Make: Almonard or bajaj.

Supply of white waste bleached baniyan cloth 150mm width *250mm length

Supply of Rust disintegrator (Rustolene) for maintenance purpose

Supply of CRC 2-26 cleaning agent in disposable container of 500ml can for general purpose cleaning of electrical equipment's

Supply of 22.5 mm dia LED indication lamp suitable for 230 volt, 50Hz AC/110 volt DC supply. Make : teknic, cat no:2PLBR

Supply of industrial grade silica gel for existing power Transformer

Servicing 100 w LED street light fittings. Including replacement of spares like LED driver, LED"s, Glass and fixing screws and painting Etc.,.

Repair and Servicing of 2000 Amps, 415 Volt, Siemens make ACB (Air circuit breaker).

Repair and Servicing of 4000 Amps, 415 Volt, L&T make ACB (Air circuit breaker).

Supply and laying, termination, testing and commissioning of 70 Sq.mm stranded copper conductor through wall, Floor, Built-in trenches including supply of clamps and fixing fasteners as per the detailed specification and as directed by Engineer-in-charge.

Supply and laying of 8 SWG Copper earthing conductor through wall, Floor, Built-in trenches including supply of lugs and fixing fasteners as per the detailed specification and as directed by Engineer-in-charge

supply and installation of conventional type lightning arrester (MAKE: CYCLO OR Equivalent)suitable for 8 mtr high building with accessories like down rod, clamps, supporting brackets, hardware's and fixing the same as per standards and as required as per site conditions.

Supply and installation of Multi function Electronic timers in various electrical feeders and equipment as directed by the Engineer-In-Charge.

Supply and installation of Electrical power supply extension board consist of 20Amps 2pole MCB 1 no as incomer, 10Amps,2pole MCB 4no as outgoing, 20 Amps metal clad socket 4 no's installed in Metal enclosure with 20 mtrs of 4 core 2.5 Sq.mm PVC flexible cable and 20Amps metal clad plug top for power connection Etc.,.

Repair and Servicing of 630 Amps, 12 kv, JOYTHI make VCB (Vacuum circuit breaker).

Supply and installation of L&T or equivalent make MN2 Thermal over load relays of range upto 6-10 Amps in various electrical feeders and equipment as directed by the Engineer-In-Charge.

Supply and installation of L&T or equivalent make MN2 Thermal over load relays of range upto 0.9-1.5 Amps in various electrical feeders and equipment as directed by the Engineer-In-Charge.

Supply and installation of L&T or equivalent make ML2 32Amps power contactors in various electrical feeders and equipment as directed by the Engineer-In-Charge.

Supply and installation of L&T or equivalent make ML4 70 Amps power contactors in various electrical feeders and equipment as directed by the Engineer-In-Charge.

Supply and installation of RE300 Relay suitable for 110/220 V, AC/DC supply in 11 KV VCB panels and equipment as directed by the Engineer-In-Charge.

Supply and replacement of trip coil suitable for 110 VDC supply in 11/6.6 KV VCB panels and equipment as directed by the Engineer-In-Charge.

Supply and replacement of closing coil suitable for 110 VDC supply in 11/6.6 KV VCB panels and equipment as directed by the Engineer-In-Charge.

Supply and replacement of Trip/Neutral/Close switch suitable for 11/6.6 KV VCB panel board as directed by the Engineer-In-Charge.

Repair and Servicing of 630 Amps, 12 kv, SIEMENS make VCB (Vacuum circuit breaker).

M.ARUMUGAM