Interested to Buy Any Domain ? << Click Here >> for more details...
What is negative phase sequence?
- 7 Answers
- 92437 Views
- Hindalco, Universal Associate, I also Faced
- E-Mail Answers
Answer Posted / sunil kumar sinha
In a three phase AC circuit, current is consetuted of
positive sequence, negative sequence and zero sequence
current.
the positive phase sequence current flows as perr the load
connected to the circuit. The negative phase sequence
current will flow due to diffence of three phase volages of
the system.If no difference of R Y B voltage is present,
the negative sequence current will not flow. The negative
phase sequence current present in the circuit will be of
same frequency but the phase sequence will be negative to
the system sequence. Negative sequence current will cause
excessive heating of generator rotor as the rotor will
experience double the system frequency so far the negative
sequence current is concerned. The zero sequence current is
present only in case of earth fault otherwise it is absent.
| Is This Answer Correct ? | 176 Yes | 16 No |
Post New Answer View All Answers
Why we use mho Relay in long transmission line?
can we use NPT glands in LT panel
How it can worked plc based electrical system And which type of software using.
Define branch?
How the annunciator works ? How to do its wiring
We normally make oil soak pits under Transformers. Oil from soak pit goes to collection pit. We provide granules/pebbles under transformers. My question is weather granules/ pebbles to be filled in soak pit or not? if yes upto what level?
what is rating boiler
Why Transformer Neutral having one earth pit ( more earth electrode resistance) whereas body have many earth pit ( less earth electrode resistance)?
Pl. brief about break-down maintenance of machine tool.
temp of cast resin 1500kva tx formerwent up to 138.c but came down very fast to about 100.c within 20 mins when load was reduced from 70% to 60%
(1)Can earth and be conected together (2) what is the diferent between earth & neutral
Testing report of Earthing of 3.15 MVa PTR.
what are carbondioxide and dcp used in fire extinguishers
What is the unit audit? if our Max demand is something and we found much more unit then how to improve our max demand?
How to minimize the eddy current losses?
