WHY POLARITY TEST OF CT IS VERY IMPORTANT IN SWITCHGEAR
Answers were Sorted based on User's Feedback
Answer / raghavendran.r
CT works on subtractive polarity.It is essential for
reducing the flux build up in the CT secondary, otherwise
immense flux build up will cause insulation burn out.Also
the CT secondary should not be left open.
The other power transformers work on additive polarity
principle.Hence it is required to check the polarity.
Is This Answer Correct ? | 25 Yes | 10 No |
Answer / naresh chandra jha
to check that mmf is in additive polarity or subtractive ,
polarity polarity test is important because in case of
additive polarity (primary mmf and secondary mmf in same
direction direction ) insulation may get damage .
Is This Answer Correct ? | 10 Yes | 8 No |
why corona loss is less with negative polarity?
r we are using in gas turbine mark (5) frame (6) (made in india Bhel 1997) Ā
Insulater disk using formula for 33/66/135 line h t line
1 Answers Hofincons, Kirloskar, KPTCL,
how can we change the polarity of Alternating current rapidly? how frequency of ac can be controlled and changed easily?
We have energy meter of ct ratio 200/5amp and installed cut having ct ratio 100/5 amp what is final MF?
explain wiring system
hai now i am working as a electrical design engineer in construction field can i get a job in oil and gass field or power plant project as a electrical design engineer?
why one side of tubelight glows after switch off ?
in 400 kv system why should trip both side CB when we give hand trip?
Draw the vector diagramme for Asynchronous Induction Generator at noload,half load and fullload.
what is diode? and what it is used for ?
Can XLPE/SWB/PVC (P3) 7C X 2.5mm2 be replaced by Can XLPE/SWB/PVC (P2) 7C X 2.5mm2??? P3 vs P2