Answer / sunoj

Switches are mechanical devices that carry and break currents under normal circuit conditions. Disconnectors is a device used to isolate the downstream electrical installations. Switch disconnector fuse unit is a unit that consists of both the above properties

What is difference between wire and cable ?

3 Answers   Havells,

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High speed earth switch operation with diagram

0 Answers   KSEB, L&T, Sanden Vikas, Siemens,

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Enlist four components of electrive drives.

0 Answers  

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what is the principle of operation of synchronous motor and generator? explain in detail.

2 Answers   Maruti Suzuki,

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what is the difference between the electrical and electronic choke?

1 Answers  

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(1)For 3 No 1500 KVA transformer require on one single bus bar or need to be section through bus coupler means upto 3MVA.(2) 22KV Net work system as ring, How maney I/C required or 0ne I/C and one O/G.(3) What should be rating of VCB for 22 KV line.(4)Electrical/mechanical inter lock, why we need.

0 Answers  

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why wave traps are placed only at y and r phase?

3 Answers  

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What is step signal?

0 Answers  

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why DC is not generated instead of AC?

4 Answers  

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What will be in Mahagenco Trade Test Exam? I want to know the same.

0 Answers   MahaGenco,

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why we are using Load factor?

0 Answers  

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Just a silly question but just to make my curious mind bac to normal - Why was not 67 and 67N relays built into a single relay as i have noticed that the R,Y,B CT wiring end up into the 67 relay while the common of the R,Y,B CT wiring end up into the 67N relay. Then it was better if a single relay was manufactured just like the distance relay (21). Another question i would like to ask is - how do we know where the 67 and 67 N relay has to be placed.why is it not placed at the transformer bay? In the substaion that i am working -i have noticed that it is placed between a breaker and a common double bus bar and this line bay is connected to another substation at a remote place which is furthur connected to a load. B U S______CT for 67 & 67N ______Breaker _____ remot s/s. B A R

1 Answers  

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