MTPS I CHP II Annual maintenance and checking of IR values of HT A and B buses LT Bus A and LT Bus B at MCC I switchgear

Amount

Labour charges for releasing the back doors (top and bottom), inner door, racking out of 19 Nos.HT Breakers and cleaning of all the covers (22 Panels) and checking of IR value.

Labour charges for complete cleaning of Horizontal, vertical busbars, 22 Nos Panels and supporting insulators with the help of air blower and Acetone, tightness checking of Horizontal, vertical busbars and outgoing power cable terminals.

Labour charges for cleaning and lubricating of all moving parts of HT Breakers-19 Nos and cleaning of Upper and lower supporting insulators, Insulated couplers, upper and lower pole arms, vacuum bottles with Acetone. All bolts and nuts tightness checking, checking healthiness of Interrupters, closing/ Tripping operations mechanically and checking of IR value.

Labour charges for replacement of H.T Bus Shrouds (Moisture formed) – 24 Nos. by spare in H.T Panel.

Labour charges for refixing of back doors(top and bottom),inner doors by providing all bolts and nuts ,racking in all HT breakers and checking of IR value and satisfactory commissioning.

Labour charges for checking final IR value of Busbars, refixing of inspection covers and satisfactory commissioning & checking of Top cover gaskets, rubber bellows and replacement if necessary.

Labour charges for releasing of all LT modules, releasing the top covers and side covers of the busbar chamber, releasing of separator plates in certain LT modules and removing of Hylem sheets in all LT modules, racking out LT breakers complete.

Labour charges for checking of IR value of LT bus before cleaning and then cleaning the main (Horizontal) busbars, vertical busbars and its support insulators with the help of blower and CTC/IPA, checking the tightness of busbar joints, cleaning the entire area of bus chamber, checking the tightness of outgoing cable, cleaning all the modules, cleaning and healthiness checking of power contactor tips and replacing if necessary, termination tightness of all components, checking and cleaning of finger contacts in breaker with IPA, checking healthiness of spring charging motors and mechanisms, termination tightness of all components of breakers and checking their operations and assisting for MRT testing works including consumables like CTC/IPA, cotton waste, dungry cloth, brushes etc.

Labour charges for checking of IR value after complete cleaning, refixing of Hylem sheets in all the modules, refixing of all the modules and breakers in the respective panels, refixing the top covers and side covers of bus chambers and successful commissioning of LT bus.