Interested to Buy Any Domain ? << Click Here >> for more details...
What is negative phase sequence?
- 7 Answers
- 92205 Views
- Hindalco, Universal Associate, I also Faced
- E-Mail Answers
Answer Posted / adil yousuf
Ans ; 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.
In rotating machines an unbalance voltage or current in one
phase winding due to elctrical faults or uneven load
further exacerbates the problem. The magnetic coupling
between the winding becomes uneven.
when subject to unbalance conditions, negative phase
sequence currents produce a counter rotating megnatic field
withrespect to the main field.
The resultant field rotates at double frequency and causes
underirable eddy-currents to flow in various structure such
as the machine rotor body , excitaation winding, stator end
winding and stator iron etc.
| Is This Answer Correct ? | 54 Yes | 8 No |
Post New Answer View All Answers
what is meant by skew width in machines?
why we use the 100% and 95% stator earth fault protection for the synchronus generator ?
State and define norton’s theorem?
How halogen & merquery lamp works.
what is gas turbine intercooling ?
What happens if the Capacitive Voltage Transformer Primary neutral is not earthed. There is a CVT between Transformer and source, and the CVT neutral of the transformer is not earthed, does it effect the transformer while charging or does it effect the transformer charging process.
why swinburnes test cannot be performed on series machines?explain
1.dg on load alarm/stop alarm... 2.dg on load. piu alarm alarm kaise chek krte hai
does the Trivector Meter of three phase automatically takes care of the low power factor and gives the reading accordigly or it does not take care of the Power factor while giving the readings please explain
Define de-sensitivity?
What is the main cause of magnetism?
what is the profesional board for electrical engineer what is thepast and during construction for electrical engineering
what are the advantages and disadvantages of speed control of 3 phase induction motor by varying frequency explain with drawing
Classify driling machines.
IF 8255 CONTROL WORD IS 94H,Tell the chip port work mode ?
