Interested to Buy Any Domain ? << Click Here >> for more details...
how to check the stabilty test for generator differential
protection
- 1 Answers
- 4203 Views
- I also Faced
- E-Mail Answers
Answer Posted / raghavendran
Checking of the pickup and dropout value
When checking the pickup value, the analogue input signals
of the single phase alternating test current have to be fed
to the relay via terminals.When testing the pickup value,
the alternating test current must first be lower than the
set pickup value.
Then the current will be increased until the relay picks up.
The value that can be read from the ammeter may not deviate
by more than ± 2.5% of the setting value. The tripping
values for the other current inputs should be checked
accordingly.
Function test
Disconnect all leads for adjusting the interposing C.T.s and
perform the following function test:
Load the generator with minimum 50% load. Assure that the
tripping of the generator C.B. does not cause un-wanted
damages (blackout).
To operate the differential relay use a shorting link
between one of the phase measuring sockets
and GND, e.g. connect Line to GND. The relay should trip
immediately. If no trip occurs, make sure
that the load current exceeds the set value.
| Is This Answer Correct ? | 0 Yes | 1 No |
Post New Answer View All Answers
what is effect of length of air gap on performance of dc motor and generator?
What are your future plans for the company if permanently employed?
How two nos. 130 kw D.C motor get synchronise using D.C drive.
How is the speed of a DC shunt motor related to the armature current?
what is the reactance,capacitance & impedence electrical armoured & unarmored Cables.
Why is a synchronous motor always star connected??
What are test signals and their significance?
How to set the relay,,??
how can i get an electrical c-certificate?
how to calculate differential current when we testing differential relay..suppose we have 1000kw generator,630amp VCB,what value we should put /inject so that relay trip the VCB? PLLZ justify ur comment
Describe the test procedure to determine the vector group
how to control dc motor?
how can found motors folt current ? how can disided circuit breakers caoicity and breaking capicity ?
How can maintain our H.T. motors used in cement plant. please send me procedure.
how we can set the IDMT relay.
