Why is the earth fault relay connected to the Yellow
Phase?
Answer Posted / k.prakashchandra
Earth fault relay is not connected any phase.The balancing
current is made to pass through this relay.In two EFR and
one EFR protection scheme,OCR s are usually provided on R
and B phases ,which makes one assume that the EFR is
provided on Y phase.You can have 3 OCR and 1 EFR protection
scheme also
| Is This Answer Correct ? | 7 Yes | 1 No |
Post New Answer View All Answers
What is the difference between cylindrical-type and sandwich-type winding?
Differentiate between ideal and non ideal current sources?
how can we design robots
Q.1:What protection will be used on HT and LT side of 33/0.4 KV, MVA transformer. Indicate capacities of protective device to be used. Q.2:Which types of back-up protections are used in the power transformers? What do you understand by the term over travel in the relay? Q.3:How star and delta connected winding transformer are provided from earth fault
what is cascade speed control device?and how this device control the speed of motors?
i have 90kw motor.so i choose connect cable .please what is parameter checked so please give to formula
could an induction motor be used for regenerative braking in electric-train control? in this type of application would some scheme have to be devised to obtain low synchronous speeds while braking? would induction-motor drive, therefore, be suitable for passenger service?
What willbe change in programming when we use 5/3 solenoid inplace of 5/2 in operating of a cylinder?
I have experienced electrical maintenance HT ,but I completed be ECE ....can I apply c license or not ???? Pls help me friend s...
How many types of losses occur in a transformer?
What is Delta Connection? What is meant by Forward Delta & Reverse Delta & How Will be the Connection in Power Transformers?
what is LSR?
DRAW ACIRCUIT DIAGRAM OF 100 KVA 415V/55-0-55V DELTA TO STAR TRANSFORMER
a 100mva,400/200v transformer has leakage impdce of 10% draws a steady state line currentof---------------
HOW THE OLTC TRANSFORMER SAVE ENERGY IN COMPARISON TO OFF LINE TRANSFORMER AND IS IT ECONOMICAL TO REPLACE THE OFF LINE TRANSFORMER TO OLTC TRANSFORMER