Answer Posted / hardip dodiya
For Protection of Breaker and protection of EHV Bus-bar in
EHV and HV switchyard. all S/s breaker have one NO/NC
Contact connected to Bus-bar control panel in which. at
time of fault, Breaker Stuck up due to Mechanisam prob or
failure of Trip coil or any mechanical damage problem.
After it TIME-Delay time almost 200ms. busbar control
panels sense this abnormality and give command to all
breaker to trip which is connceted to EHV Bus-bar.
Protect the S/s Equipment.
| Is This Answer Correct ? | 1 Yes | 0 No |
Post New Answer View All Answers
why lightning arrestor are made in two stack of insulator but why not cvt
Why control of DC motor is simpler?
If a air condition consume 2.50 to 3.00 amp then how much it will consume in watts if it is running 10 hours out of 24 hours????
TRANSFORMERS WITH DC SUPPLY
THERMAL CAPACITANCE IS MEASURED IN..................................................
What is MS-EXCELL?
How to decide no. of Step and Kvar for APFC Panel 40 kvar MD: 33.12 KVA Avg pf : 0.8540
How does a television work?
What is Control & Relay Panel? And Remote Control Center?
What is d main advantage of using double circuit 3 phase transmission ?
PLS SEND THE RRB CHENNAI MODEL QUESTION PAPER my email id is ganesan98655@rediffmail.com
what is ramping rate of generator
What is the meaning of utility ground and clean ground? How the distribution panel is grounded?
how can we change the phase angle b/w two phase?
what is meant by surge? what we called for high currents?
