what is the diffrantial relay???????why we use it on the MDB
- 5 Answers
- 7125 Views
- I also Faced
- E-Mail Answers
Answer Posted / gova
Diff relay will trip not only for earth fault but for phase
fault occurring inside the transformer.
Diff relay should not operate for through faults or
external faults-(out zone fault,i.e beyond protected zone)
regards
gova
| Is This Answer Correct ? | 1 Yes | 0 No |
Post New Answer View All Answers
is that any software calculator to calculate the size of cable
What is the normal phase difference between the voltage and the no-load current in a transformer?
Explain what is electric traction?
how calculated Transformer losses.
What is PQA???Applications........
For small size, high frequency coils, the most common core material is- a. )Air b. )Ferrite c.) Powdered ion d.) Steel
What are the specifications for conducting earth leakage test as per IEC standard?
How to back charge the Gas turbine generator
please send me privious exam's queation papers of section engineer(electrical).
Is a contactor (or master relay) required between incoming lines and a VFD? The question goes to safety. If a contactor were used before the VFD and an e-stop engaged then the motor will coast to a stop (i.e. VFD loses power) instead of stopping much faster if the VFD braking fucntion were used. It would make more sense to keep power on the VFD.
What do you mean by passive circuit elements and why these are called passive?
i m doing DEEE in part time,can i join regular cources in BE,,IF i join what the cources can i select like (civil,ece,IT) ,,kindly advice
Explain the operation of variable frequency transformer?
how we provide neutral earth on synchronising panel as per electrical standards?
What is the difference between grid and off- grid system??
