Which type of arc protection devices used.
Answer Posted / ashraf.k
Arc horn ,guard ring for arc protection overhead line
Is This Answer Correct ? | 0 Yes | 0 No |
Post New Answer View All Answers
Is it possible to connect a safety device in to parallel?
How do we calculate transformer oil in liter from the rating of the transformer.
71ohm,111ohm,95ohm,179ohm in calculate the total ohm in series circuit
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,
What is Harmonics how it is produced and what is the method to control the same
If we have use two power cable for incomer, that time how many use cbct for earth leakage protection? 1 or 2 if 1 way? If 2 way?
Why the arms of delta in a delta-wye power transmission system are kept constant??
Give some differences between open loop and closed loop?
what is the affect of earth's magnetic field on the frequency used in aircraft???
why current is constant on d.c?
Classify drilling machines.
what is static frequency converter?what is the function...of sfc...?
What is the difference between AC and DC injection methods for rotor earth fault protection
What are the factors which influence the choice of specific magnetic and electric loadings of a synchronous machine?
A 400 V, 50 Hz, Δ connected synchronous generator has a field reactance of 0.1 Ω and armature resistance of 0.015 Ω. At full load, the machine supplies 1200 A at 0.8 pf lagging. Under full-load conditions, the friction and windage losses are 40 KW and the core losses are 30 KW. What is the machine’s overall efficiency? Ignore any field circuit losses.