why do we use magnetic contactors ?circuit breakers are not
enough?
- 5 Answers
- 21843 Views
- I also Faced
- E-Mail Answers
Answer Posted / ashwani malhotra
The main function of magnetic contactor is to prevent
accidently operation after the power failure & again
recovery. Because as soon as power fail the holding coil
release the contacts and it will not operate untill someone
complete the hold circuit again .
| Is This Answer Correct ? | 24 Yes | 4 No |
Post New Answer View All Answers
Dear sir, In our plant have Station Transformer having capacity,i want to know, why LV side 40 - 40MVA is given? & how we can get 6.3 KV supply from tertiary(i.e. Open delta connection), Vector Group YNyn0 - yn0 +d MVA Rating 80MVA / 40 - 40MVA + 26.7MVA Voltage rating 420 (Tap range +6,to -10)81.25% /11.5KV - 11.5KV +6.3KV
Where can I get CPWD electrical specifications & Shedule of rates? Please help me
how to test YNyn0 vector group in transformer?
Tell me in detail about c.t. And p.t. ?
10 tube light connect in mcb breaker.one tube light is fault.so breaker is tribe.how fault is rectified.(using 3wire phase,earth,neutral)
1sq mm dc powr cable can carry how much dc currnt
For a three phase induction motor, what will be the effect on motor if the neutral of the system is shifted to say 20 deg.?
How to calculate that clean water supply in one Day from 150 KLD STP?
What is dynamo?How it works and what is the function of dynamo in a DG.
Whether amorphous core transformer is commercialized or not:Name of company making amorphous core transformer and what are different rating?
What is float cum boost charging system?
Distribution transformer we provided 2 separate earthing pit for Body and 2 separate earthing pit for neutral,we can not connect separate body earthing pit to other earthing pit but we do metal glanding in secondary side cable termination in both side, transformer and PCC panel (LT Panel), is this safe for transformer and other equipment?
What will be the fault current of any system when its generation is 10% of BASE generation( FUll Load )?Will is 10% or the same as full base calculation?
What is the difference between rulling span and wind span of of an Over Head Transmission Line?
I am having a 1500 KVA transformer whose secondary current is 2086A and my connected load is 1000 KVA, I am having 400 KVAR APFCR for PF improvement what ratio of CT should i install in LT EB Bus to get optimum PF improvement?
