NCTPS I ES Circle EM II Division SDn II HT LT SWGR Carrying out Time bound works for maintenance overhauling of important critical modules and HT LT breakers in RWPH AHP FOPH AC Plant and Silo for the period of 180 days for the year 2022 23

Amount

Releasing and cleaning of critical modules, healthiness checking of power Contactor tips and replacing if necessary and terminal tightness of all components and re-fixing the modules in the repective panels. Checking of cable tightness at modules end and motor end, replacing of lugs if necessary for 1 module) LT module – 63 Nos. (Critical modules in AHP, AC Plant, FOPH, Silo SWGR)

Releasing, checking and cleaning of finger contacts in breaker with acetone, healthiness of spring charging motors and mechanisms, tightness checking of all components of breakers and lubrication of all moving parts and checking their operations and re fixing the breakers. Opening of breaker panel back doors, checking cable tightness, cleaning and re fixing etc., for 1 No. LT breaker. (Critical modules in AHP, AC Plant , FOPH, Silo) (AHP – 13 Breakers, FOPH – 3 Breakers, AC Plant – 2 Breakers, Silo – 6 Breakers)

Replacement of spring charge, motor in 6.6 KV HT breaker AHP – 26 Breakers RWPH – 6 Breakers

Replacement of mechanism in 6.6 KV ABB make HT Breaker. AHP – 26 Breakers RWPH – 6 Breakers

Disconnection of power cable, De-coupling the motor from pump and checking alignment (if necessary)

Removal of foundation bolts, lifting the motor to a convenient location

Lifting of motor, placing at motor bed and tightening of foundation bolts, bed bolts etc.,

Charges for cleaning of light jungles and trees around the transformers, 4 pole structure, yard

Checking of Distribution transformer such as Primary / Secondary side terminal tightness checking, changing of bolts & nuts and external cleaning, checking of earth and replacement if necessary and meggering under the supervision of NCTPS officials

Charge for transporting of DM water from DM plant to each battery room in 20 Litres can

Charges for top up of electrolyte for 15 Nos. battery cells (1 Set)

Charges for termination tightness and cleaning for 15 Nos.

Charges for applying petroleum jelly for 15 Nos. battery cells (1 Set)

Charges for discharging of 30V, 100 AH battery set during annual maintenance

Charges for charging of 30 V, 100 AH battery set during annual maintenance

Charges for external weekly cleaning of HT/LT motors, LT switchgear panels, contactor panels, control push button, switchgear and Power transformer in RWPH, AHP, FOPH area

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