Answer / gs kiani

Bus Coupler is a circuit breaker used between two or more buses to couple the buses and retain supply to the load incase of any faliure in one bus or source. Supply is maintained without any power otage or break.

what is mean by dual digital protection in the relay field?

0 Answers   ABB,

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What will happen if we give 220v supply on both sides to the bulb

7 Answers   Exide, Sumeet Industries, Toshiba,

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what is ceiling voltage in an exciter?

1 Answers   KEPCO Energy Service Company,

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what is proper capacitor placement? How to evaluate capacitor size?

0 Answers   CPCL,

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What is the deffirant between EARTH, GROUND AND NUTRAL

4 Answers   TCS,

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what is the difference in between short time and continuous rating?

1 Answers  

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what is IP55,IP65

4 Answers  

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How is earthing done in Aerospace applications such as Flights and spaceships..?

1 Answers  

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how does PLCC work?...

1 Answers  

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how to find impedance , mutual indatnce in transmission lines

0 Answers   NTPC,

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Hi, I've just got into my electrical engineering course and I need some help with a question of mine here. During a site visit, we were shown a main LT panel which has switchgears, ammeters and different kinds of relays and the distribution network from that panel. In the main LT panel I've noted down the current readings as Ir - 163A, Iy - 150A and Ib - 147A. The Line to Line voltage is 415 V at 50 Hz and Line to Neutral voltage is 230V at 50 Hz. From the above details, how would I calculate the kVA rating of transformer? The primary side voltage of the transformer is 11 kV and the secondary side voltage is 415V and the frequency is 50 Hz.

2 Answers  

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How can we determine or find out the proper size of any cable if nothing is mentioned on it.Calculation of size in Sq.mm???

1 Answers  

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