safety: fix motor, hight voltage...?

Question

Please help me answer these question. Thanks a lot.

1/how do you shut down safety a 12000 volts switch yard

2/what is high-voltage splice

3/if you were assigned to repair a 100 hp induction motor that has been tagged out with no explanation on the tag, do you know how to safety the problems ? list what you diagnose ?

4/what safety equipment is required to repair an existing high voltage feeder

5// when trouble shooting a motor that is powered by an ac variable frequency drive, what steps would you take ? what would you not do

6/what part in a synchronous motor generally requires the most frequent attention

Have a nice day.

Answer 1

1) If you have to ask, then you're not qualfied to work inside the yard.

2) If you have to ask, then you're not qualfied to work on one.

3) Take the motor to a qualified repair facility.

4) If you have to ask, you're not qualfied to work on the equipment.

5a) Hire someone who knows what they're doing.
5b) Try and fix it if myself.

6) Bearings

Answer 2

1) the best way is to swtich off all loads, then switch off the incomers, what kind of a wtuch gear do u have, is it vaccum circuit breaker type?
2) its the special material that is used to cover the cable ( looks red or black) and shrinks upon heat to protect the cable termination.
3) switch off and isolate, earth, then open and work.
4) repair a feeder of what type ( GIS?)
5) never work on anything live, make sure discharge resistors r healty.
6) bearnings.