Interested to Buy Any Domain ? << Click Here >> for more details...
Answer Posted / komyozaw
Back up protection for power system.
Because when the main supply is failure and recover.
We do not know the recover voltage is Higher or lower than normal .So we should check and protect with protection relays.
this protection relays is power by battery charger.
Also all the system is shut down , the battery backup protection is remain.
| Is This Answer Correct ? | 22 Yes | 12 No |
Post New Answer View All Answers
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?
In constant power region of 3-phase IM torque-speed characteristics, if frequency increases flux A does not alter B decreases C increases D none of above
Lt motor sfu flashing reasons?
what is die electric strnth of transformer ?
What is Annunciation?
what are safety measures in /control in diesal engine/ explain them?
is it possible to test of bus bar in high rise building without completed full floor ?
what is the Connected Load (kW) or Contract Demand (kVA)of mahindra nasik plant??
how will reduce the voltage. if 12volt/250ma transformer toreduce 6 volt
i want use the cable size 16cx4 core aluminium usege watts 240x2000w this cable size is correct?
What is meant by reactance voltage?
Metal covered multiconductor cables shall employ a marker tape located within the cable running for its complete length in lieu of cable surface marking. Is it true or false?
Factory acceptance test. FAT. For 132 kv transmisstion towers what is that meaning and what are the tests commonly companies perform now days.
What si the d/f b/w KVA & KWH, kvarh & kvar, kwh & kvar phase voltage & line voltage
Why we cant store an ac power. If we coo store in which device we can?
