Answer / ravi kumar

Safety of vcb :[ Vacuum circuit breaker]
1: Earth fault relay
2: Master trip relay
3: Supervision relay
4: Short circuit
5: Shunt relay
6: Closing coil

Answer / arvind kumar

VCB SEFTY
Earth fault
Short circuit
Over current

Answer / kumar manish

VCB saftey-
1.Earth leakage
2.Current unwanted due to Short Circuit.
3.Over load

Answer / vijay raj

Oil type transfomar sefty ans dry type

Answer / bhanu pratap singh

all right

I have CNC Turning lathe,while doing electrical preventive maintenance what should I do & please brief me plan & shedule for the same.

1 Answers   DRJ ARDE,

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how to calculate the loss tangent of electrical cables

0 Answers  

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What is the different type of class in CTS and why it is required

2 Answers  

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Is necessary Protection CT, CLASS - 5P10 fitted at Incomer side of main Breaker ? Why ?

1 Answers  

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What is class ab operation?

0 Answers  

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What is the basic of DTH.

0 Answers   IOCL,

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Graphs of measuring power and speed on dc motor

0 Answers  

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circuit breaker is ...............connected with circuit

2 Answers   Rancho,

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How can make a star delta with Rstar delta feeder ( ( 4contactor & one timer ) pls answer with digram (power &control digram)

1 Answers  

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what is mean by potential and potential free contacts

2 Answers  

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how much value of resistance should connect to 15 kw, 6 pole 3 phase slip ring induction motor having RV-240, RA-42.

0 Answers  

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by what factor the starting current is used when comparing star and delta connection for motor starting?

0 Answers  

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