ICHP- Attending routine electrical maintenance works in various capacity of LT modules, motors, Breakers, Transformers, Travelling Trippers and Trash Screen at JT-3 etc., at SS-I related to Station A conveyor system.

ELEC MTNCE WORKS IN STATION A CONVR SYSTEM

LT module 30KW and above 30 KW: Charges for the following work in One LT Module –rack out the LT modules from the panel(Range 30,37, 55,90,110,137KW) – Removing from its position- Removal of dust by blower/Vacuum cleaner– Removing the contactors cover – Removal of carbon dust over all electrical components, moving and fixed contacts, metering CTs. With Molykote- Tightness checking of all bolt and nuts, internal wiring with components – Reassembling the LT modules – After completion of work, racked inside the LT modules along with conveyors (Conv.27A&B,26A&B, 25A&B, 24A&B,28A&B, 36A&B, and Trash Screen-A&B at JT–3 - 13 Nos (Each module should be cleaned twice in a month)

LT Motors 30KW and above 30KW: Charges for the following work in One LT Motor - Removing of terminal cover Cleaning of motor and terminal box by blower – Tightness checking of all three phases bus bars and end terminals – Applying of bearing grease – After completion of work – Meggering of the motor winding resistance - Checking of the motor trial run with load .(Conv.27A&B, 26A&B, 25A&B, 24A&B, 28A&B,22,23,36A&B, and Trash Screen-A&B at JT-3-16Nos (Each Motors should be cleaned twice in a month)

Charges for the following work in One LT Breaker- rack out the LT Breakers 415V range-from the panel – Removing from its position – Removal of dust by vacuum cleaner/ blower – Removing the arc chute cover – Removal of carbon deposits in all electrical components , moving and fixed contacts, Protection CTs. With molykote – Tightness checking of all bolt and nuts, Internal wiring with components – Lubricating the breaker mechanism- Reassembling the LT Breakers – After completion of work, racked inside the LT Breakers to the panel and put in service position and check the healthiness of the Breakers and operating conditions (Incomer Bus IA, IB, IIA, IIB, Bus Coupler – 2Nos., Conv.22, Conv.23 and Conv.28B,-9 Nos (Each Breakers should be cleaned twice in a month).

Charges for the following work in one No Transformer- Removal of dust from the outer surface and between cooling fans of the Transformer/6.6KV/433V by Blower – Cleaning of earth resistance box and Bucholz relay, oil level gauge glasses – Checking of oil level and winding and oil and earth pit condition .

Charges for the following in One Traveling Tripper - Removal of dust from the Traveling tripper and traveling tripper panel board 415V/230V and 415V/110V by using of blower – Cleaning of auxiliary contactors and all other electrical components in traveling tripper panel with Molykote– Cleaning of tripper motor, cable reeling drum motor by blower – Cleaning and checking of tripper Brake shoe – Checking of tripper cable healthiness. (Conv.27A&B) -2Nos(Each Traveling Trippers should be cleaned twice in a month)

Providing routine monitoring staffs for SS-I: Following the instruction of SS-III operator and switch ON @ OFF the module at SS-I Rack in and Rack out of LT Breakers and modules for the purpose of issuing the clear- all ending zero speed problem, pull chord and L/R switch in Conveyors-25A&B, 26A&B, 27A&B – attending any electrical problem occurred in tripper-27A&B – taking winding and oil temperature reading at SS-I transformer-1A& 1B and watching of oil level – watching the temperature of motors of 27A&B, 26A&B, 25A&B.

K. SWAMINATHAN