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|How much allowable difference current between on three
We have a 1870 KW HT motor, 11 Kv supply,FLA-120A,2870
rpm,2-pole squirrel cage induction Motor.And stator is
connected in star connection with Liquid resistance stater
to limit the starting current.It has coupled with
Centrifugal air compressor.My question is it is loading 73%
of FLA taking R-phase 86.7 A, Y-phase-85.4A,B-phase-
78.3A.why the B phase current is that much of difference.Is
it allowable, or any one tell me how much allowable
current.If any method to calculate.
|what is the difference SCR & TRIAC?
|Sir we have 12.5 MVA(110/11KV) transformer (Y-Y)
connected,which tripped showing earth fault,when we charged
transformer it stood OK ,but on connecting 11 KV feeders it
tripped showing earth fault.our service engineers found that
the B phase and R phase phase connecting to neutral broken
from HV OLTC(on load tap changer),and R phase and Neutral is
ok.Dissolved gas analysis shows that accetline content is
high,tan delta value is 12.My dout is it is an internal
fault of transformer,why REF or diffrential relay is not
|how LT meggar works
|How many input terminal of single phase transformer.which
is use for rural power distribution.
|How open delta used for protection?
|if 50hz transformer is required to be run on 50% frequency
what needs to be done???????????
|what is the working principle of tube light?
|how calculation to be done of cable size/o.h. conductor
size of 11kv h.t.for the load of 2175 kw
|why transformer rating in kva?
|WHAT IS THE FULL FORM OF CABLE TYPE-AYWY,AYWAY,YWY ?
|what is the difference single phase and 3phase starter
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