Interested to Buy Any Domain ? << Click Here >> for more details...
why we are used D.c. voltage in L.T.side or controling
side.we can use UPS also ,in place d.c. voltage
- 5 Answers
- 8856 Views
- ABB, I also Faced
- E-Mail Answers
Answer Posted / gangadhar shailaja bellary
Your question is not perfect.Any way UPS not suply the the
DC voltage is suply a/c only with out interupt.We use DC in
control circuit because it has free from hormonics and it
has constant.
| Is This Answer Correct ? | 15 Yes | 0 No |
Post New Answer View All Answers
how to enter inverter parameter? without manaual?
IN MY SYSTEM THERE IS ONLY OVER CURRENT EARTH FAULT RELAY IS AVAILABLE. FOR THE UNBALANCE SENSING IS THERE ANY RELAY IS AVAILABLE? THE SAME CTs WHICH ARE USED FOR THE OVER CURRENT EARTH FAULT RELAY CAN USE FOR UNBALANCE ALSO?
what is the best method of grounding in 30 MW generator?
working function importance of mdc meter
How to calculate no of EARTH PIT? Describe the formula as per IS standard?
how to calculate the formula of cable size if motor kw is given
How to work definite,over pluxing,revers power,OSR relay
2- What are the percentages between excitation currents in phase (R, S and T) in ∆ and Ỵ connections in excitation Current test in transformers?
A 10 MVA, 66KV, 50Hz, Y-connected 3-phase alternator has synchronous reactance of 0.635 Ù. It is working at full load at 0.8 lagging p.f. condition. Find torque angle, neglect armature resistance.
is oil viscosity affect on motor current?
What is the simplest formula to calculate the rotor diameter of a synchronous generator?
which is chemical used as in ro water what is difference betweeen multi grade filter&dual media filter
why motor range is available 22kv,30kv,37kv,45kv and so on? why motor range is not available 21kv,24,25,26,27kv and so on?
How to calibrate or test an LT Air Circuit breaker 440 volts, 35 KA, 800 Amps ?
What is line resistance of cable & how it can be measured ?
