Answer / chreamz

A switchgear is an automated electric power switching
device or cubicle. It comprises of Current Transformer,
Voltage Transformer, Relays and Circuit Breaker. Together,
these instruments work hand-in-hand to initiate Closing,
Tripping of power hence protecting the connected load in
the system.

Should a fault occur within the system, a CT pick up the
exact type of fault, sending the associated signal to the
relay. The relay, dubbed the brain of the switchgear, send
an isolating signal to the CB to cut the power, hence
preventing catastropy to the connected load.

Why the standard of ambient teperature mentioned as 40 degree celcius in machines.

0 Answers  

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Why Two Transformers aside shoud be supperated by concreted wall?

5 Answers  

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can anybody tell me that for p.f. Improvment we use capacitor banks but how to decide its capacitance. As we all know how to calculate kvar but what abt capacitance value

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AL=0B9H,bl=75H, ADD AL,BL AL=____________? CF________? OF___________?

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what is MFD value in capacitor?I have 201 Kva load & reactive power is 150 Kvar. so how it is calculated?

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why in isolation transformer we dont get any shok?

2 Answers  

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WHAT CAUSED THRESHOLD VOLTAGE TO EXIST?

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I know the Capacitor value- 12.5KVAR, voltage 440V gas filled, then what is the formula for calculate the microfarad value for this 12.5KVAR capacitor

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9 Answers   Emerson, Rajshree Sugars, Siemens,

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why power generated only 11KV not more than???????? and why power up/down is multification of 11*?=??.??? foe Example 11/33,11/66,66/11KV etc,

8 Answers   Essar,

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

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