Interested to Buy Any Domain ? << Click Here >> for more details...
Explen all type electrical protection ? like
O/C,E/F,NPS,VOLTAGE UN BLANCE,CURRENT UN BALANCE,NAGETIVE
PHASE SEQ,AND ETC...............electrical Protection
- 6 Answers
- 21904 Views
- Reliance, I also Faced
- E-Mail Answers
Answer Posted / sgthakur
o/c prot. means in simple lang.to protect elect.equip.from
being over loaded whether it is in one/two phase.
E/F prot is provided in mainly capital equip.to protect
fr.damage in the winding during insulation failure.
Neg.phase seq. provided to such costly HT motor to protect
fr. serios damage in the elect. equip.due to unbalance in
the system causes tremendous heating in the winding thus
puncture the insulation.
In delta-delta system where neutral earthing is not
available, there to obtain extra neutral earth zig-zag
trans is used for E/F prot.
| Is This Answer Correct ? | 5 Yes | 0 No |
Post New Answer View All Answers
What is meant by reverse polarity and how it can be fixed?
If 22 KV HT line, Current transformer is 25/5 then how to calculate multiplying factor.
what is meant by residual over voltage & residual earth fault ?
What is effect on in zone and out zone fault if CT chosen for phase side is Vk/2<5mA and Neutral side is Vk/2<15mA on REF protection of Transformer
how to calculate the distance relay faulty zone?pls explain?
we are having 15kw and 3kw motor both can run in same time , instead of using copper we are using ug aluminium cable , 35 sq.mm is suitable for its current carrying capacity..?
what curve and rateing would you use for a three phase 0.75kw motor?
Why AC current leads voltage in capacitor and how?
If there are two transformer having rating of 2.5mva, 6.6kv/440v(satr-star),and the load is 600kw then what is better to maintain less losses in transformer having both transformer in parellel or only single transformer connected to load? Please give calculated answer
How to minimize the eddy current losses?
earth also having a gravitational force (magnetic field of north and south)but it attracts any object compare to this theartifical magnetic cant perform same as earth why?
What is the direction of current flow in ct secondary...means if the current is flowing from P1 to P2 then what will be the direction of current flow in ct secondaryw
hi frnds can any one help me ? plz send me placement paper of IOCL of Electrical streem .... plz send ....its urgent....
In a carnot engine with an efficiency of 40%, the heat rejected to the sink at 27 C is 60 kJ, then the heat supplied in kJ to the engine by the sources is
what is draiv work
