Name of Work:ECHP-II- Attending Electrical maintenance of equipments in Switch Gear-VII and Link Conveyor for the period from 01.04.2025 to 31.03.2026
Sl. No.
Item Description
1
HT Breakers :Charges for removing of terminal cover, rack out the HT Breaker from the panel releasing from its position removal of carbon in all electrical components moving/ fixed contact protection CTs with molykote tightness checking of all bolts and nuts internal wiring withcomponents checking the SF6 gas level and gas filling up and checking of spring charge motor condition.After completion of work Breaker racked inside the panel and put into service position and checking the healthiness of the Breaker including assistants shift operator round the whole shift during at CHS-VII.
2
LT Modules above 30KW: Charges for racking out the LT modules from the panel releasing from its position removal of dust by blower- removing the contacts cover-removal of carbon dust of the cover, all electrical components moving/fixed contacts metering CTs with molykote, tightness checking of allbolts and nuts internal wiring with components reassembling the LT modules to the panel and put into service position and checking the modules along with the conveyors, including assistants for shift operator round the clock in shift duty at CHS-VII.
3
LT modules below 10 KW:Charges for removal of terminal cover and rackout the LT modules from the panel. Releasing from its position removal of dust by blower removing the contact cover-removal of thecarbon dustin overall electrical components moving/ fixed contacts metering CTs withmolykote tightness checking of all bolts & nuts internalwiring with components reassembling LT modules after completion of work racked inside the LT modules along with conveyors including consumables, including assistants for shift operator round the clock in shift duty at CHS-VII.
4
LT Breakers: Charges for rackout the LT Breakers from the panel removing from its position removal of dust from its by using blower removal of carbon in all electrical components moving/ fixed contacts, protection CTs with molykote, tightness checking of all bolts and nuts internal wiring with components reassembling the LT Breakers to the panel and put into service position and checking the healthiness of the Breaker.
5
Power Transformers:Charges for removal of dust from the outer surface of the transformer by using blower cleaning the earthresistance box and bucholz relay oil level gauge glasses checking ofoil level and winding temperature indicator in transformers 1600KVA- 2 Nos., 500 KVA-1 No.
6
Linkconveyor electrical equipments: a). Charges for rackout the LT modules from the panel removing from its position removal of coal dust deposited over all electrical components such as power contactors, auxiliary contactors, fuse switch, control fuse holders, CT ammeter, selector switch, indicating lamp holders control transformer, power and control wiring and etc., by using blower/vacuum cleaner/cleaning brush, removing the power contactorsarc chute, auxiliary contactor top cover and cleaning the carbon deposition over the fixed and moving contacts by using good quality electrical contact cleaner (molykote)tightness checking of all bolts and nuts, of power and control wiringwith components, reassembling the contactor arc chute and top covers in the respective places-after completion of work check the IR values of wirings and racked in the LT modules to the panel and put into service position and Check the operating condition of the module, including assistance for shift operator round the clock in shift duty in the locations CHS-VII.LT modulesabove 30KW
7
\" \" LT modules size 0 modules switch fuse type.
8
LT motors : Charges for removing of terminal covercleaning ofLT motorterminal box by blower, tightness checking of all three phaseend termination, checking of bearings and greasing, after completion of work meggering the motor winding check the motor trail operation with load for 30 KW to 120 KW (Total motors = 2 Nos.)
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