Answer / k.prakashchandra

Trip circuit supervision is for supervision of trip circuit
for loss of DC supply,faults on trip coil or cables,faults
in auxiliary contacts and in itself, with breaker in any
position.Directional OCR acts for over current in one
direction only where non-directional acts for both the
directions

What will be the impact on motor performance if a LT motor is rewound with changed motor winding data as given below:- Original winding data: total 04 wires = 02 wires of 17 SWG + 02 wires of 16.5 SWG. Changed Winding data: total 03 wires of 15.5 SWG wire size Motor rating: 160KW, 740RPM, 415V, ID FAN application. Normal Running Current = 95% of FL Current.

0 Answers   NFL,

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why Batteries & Battery chargers are used in substation? what is the different between UPS & battery charger?

4 Answers   DLF,

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why usa use 60hz and 110v?

2 Answers  

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To prevent the mal operation of a differentially connected relay while energizing a transformer, the relay restraining coil is baised with (a)second harmonic current (b)fifth harmonic current (c)third harmonic current (d)seventh harmonic current

2 Answers  

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What are the safety measures of Alternator Explain them?

1 Answers   HSL,

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what is the difference single phase and 3phase starter

1 Answers  

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how the testing of protection CT Testing done through Primary injection kit please describe in detail procedure...

0 Answers  

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Please tell me in DETAIL about the following 3 types of fuses or recommend me a good power system protection book or a website link ? 1.Dropout Fuse 2.Striker Fuse 3.Empulsive fuse (not sure if its impulsive or explosion fuse , sorry)

0 Answers  

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What is difference between stable and steady?

1 Answers  

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APPLICATIONS OF SHUNT GENERATOR

1 Answers   Wipro,

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why the substation require din electrical system?

1 Answers  

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please write motor, transformer, Generator setting, fault level calculation of Tr.etc

0 Answers  

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