Is any AC drive(VFD) had a feature of DC injection braking?
if available please mention the detail.
i.e drive can supply braking torque when the motor in idle
state.
What is the permissable nutral current of three phase system as per IS standards?
Explain role of Buckolz Relay in Transformer ?
can we transmit power with out cable if it is possible how it is possible.
1.what is the difference between ct and cvt? 2.what is the difference between pt and cvt? 3.what is the difference between relays and circuit breakers?
234 MVA Generator 3 phase Short circuit current Values required? Gen set Rating-234 MVA, Gen Voltage-18kv, PF;0.8, Xdv:23.5 %, Transformer Rating-18/380KV, 680MVA,Yndd1 two winding, Step up TR, ZT:35.50 %,X/R 4.33 Gen CB Position, CB open ,Disconnected open, Generator Running Voltage 18 Kv, Bi mistakes generator side earth switch Closed during that time short circuit current level in 3 Phase required, and how to test on site 234MVA Generator Short circuit current,
How to measure the capacity/rating of a distribution transformer in KVA?
how power factor improves by connecting syncronous motor
Which motor is suitable for mixer grinders.
why elcb used in circuit
difference between torque mode and speed mode
why we used capacitor in induction motor?
Practical condition in 400KV Sub station:- Breaker(open) , isolator(open), Earthing (close) at both end e.g A & B. Now Open A Stn Earthing than Open B stn Earthing (Which have a 50MVA reactor) , AND suddenly show R,Y,B phase 704KV,573KV,118KV respectively. Que is without closing of breaker how it is possible.???? My Whats app No:07621840498 for Further Discussion. Pls experts suggest.