what is over frequency protection
Answer / aditya
over frequency occurs when the RPM of prime mover goes above the rated speed. This protection is basically for prime mover and gives a trip signal to the prime mover in case of overspeed so that the centrifugal forces dont damage the prime mover and alternator rotor. This is generally a result of faulty speed governor or sudden throw off or throw in of large magnitude. In addition overspeeding will also result in increase of supply frequency. certian electronic equipments are very sensitive to freq and get damaged hence over freq protection is given.
Is This Answer Correct ? | 4 Yes | 0 No |
why electric shock due to dc is dangerous than that of ac
What's ND relay & it's functions?
How does ELCB work when exist earth foult? and How does RCCB work when exist earth foult?
how will we calculate the copper wire load..
what happens when dc supply is given to the transformer?
What's is the difference between IVT and CVT?
How to setting the volume of RTCC panel AVR (11kv) controller
0 Answers CNF Automotive India,
How to calculate meter constant @ HT yard
what is the function of a commutator in a dc generator?
14 Answers College School Exams Tests, NTPC, TCS,
If i am running of spindle at 2000rpm ,but How to spindle stop at the second I am resetting the machine in CNC machines
The initial current is very large at the time of starting for almost all DC motors. SO WE USE STARTER FOR A SAFE STARTING but at our homes we don’t see any starters in our coolers, motors.WHY DON’T WE NEED STARTERS FOR THESE APPLIANCES?
explain all the classes with example