Tell the details of the precommissioning tests that are
performed on distribution transformer, power cable and
switchgear (11kv).
- 1 Answers
- 2996 Views
- Reliance, I also Faced
- E-Mail Answers
Answer Posted / subaharan
first check the transformer bushings and their condition,then
you meggering the transformer each phase to phase and phase to
earth.
power cable you check the high voltage test which is used for
measuring the leakage current,meggering and continuity
checking.
switchgear the same meggering,isolator checking,relay
testing(set various values of currents,voltages and set time
for tripping) make the fault and note the trip time.
| Is This Answer Correct ? | 1 Yes | 0 No |
Post New Answer View All Answers
in battery charging room we find two fuses (one in positive other in negative cables ).why it is so?one fuse is ore than sufficient?
How many VSC based HVDC are there in India and the world
what is a bus riser in power system and why it is used
WHAT IS MEANT BY DERATING OF THYRISTOR?
What are test values for an 63 KVA and 100 Kva Distribution Transformers for the following typical tests 1)Magnetic balance 2)Short circuit test 3)Open Circuit test 4)Vector group confirmation test .please give me the standard values for all the above tests.
What is steady state response?
how to calculate current carring capacity of cable and cable selection? 1) copper flexible cable 2) copper armoured cable 3) Aluminium cable
what is the function of Moulded case circuit breaker, why it is called Moulded?
What is corkscrew rule?
Is a d.c.compound motor is use as a booster? how?
How to decide and select the different earthing wire size for the different types of earthing
What is the maximum operating temperature for a thermoplastic insulated cable?
On what basis do you decide the ONAN (Oil Natural air natural) or Dry type transformer for a project?
what is mean by ideal infinite bus? why it is required to consider in fault short circuit calculations?
advantages and disadvantages of inverse definite minimum time RELAY
