Answer / nikitha

Used in transmission lines;
near alternators and substations- non directional
else - directional

Answer / sheikh

Different kinds of over current relay are available.
on HT side over current relay is a part of protective relays.
and LT side over current relay are using in motor starter,
ACB. There are 2 type of over current relays used in motor
circuit one is thermal over load relay second one is EOCR
electronic over current relay etc.

how power factor improves by connecting syncronous motor

2 Answers   ACC,

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what is the d/f b/w iverter & converter.

5 Answers   Indeco,

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we have a 2000kva step down transformer at our site. The HT side is charged from 22000V. So the primary current will be 52.48A. So why the HT breaker(SF6 ABB) is rated of 1250Amps ?

2 Answers  

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what is the difference betn earthed and unearthed cables which is commanly used why?

2 Answers   Bhel, Power Grid,

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Can we connect two or more energy meters/Amp meters on one CT set(Three phase).

5 Answers   Parle, Watermark Engineering,

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What are the different lines and what are the different types of losses occur on them?

2 Answers  

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which network topology offers the greatest level of tolerance?

0 Answers  

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What is the formula formula for Busbar sizing and what are the things to be consider for Busbar Calculation?

0 Answers   ABB, APL,

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Difference between on line capacitor and Station type capacitor

0 Answers  

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what difference between thermal and bi-metal over load relay?

2 Answers  

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How will calculate losses in an multi core Aluminium LT cable of different sizes & upto what length we can use a LT Cable ?

0 Answers  

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What is meant by Guard relay ?

2 Answers  

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