WHY IS RESTRICTED EARTH FUALT PROTECTION NEEDED?? WHY CANT DEIFFERENTIAL PROTECTION SUFFICE???

14 Answers  

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what is mutual induction principle?

2 Answers  

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which turbine has high thermal efficiency a)open gas turbine b)close gas turbine

2 Answers  

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Can I use star delta connected induction motor for dual supply voltage?

0 Answers  

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How to calculated capacitor rating both HT

10 Answers   Reliance,

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In case of HV test on medium voltage cables, BS is asking for 4 U0 where as IEC is asking for 3.5 U0. Can any one advise me how this 3.5 times or 4 times U0 is derived?

0 Answers  

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What is the Frequency while we step up the voltage from 220V to 11KV? Is it possible? Explain it?

2 Answers  

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Please clarify 1. Icw: rated short circuit working withstand capacity 2. Icu: Rated ultimate breaking capacity 3. Ics: Rated service short circut withstand capacity 4. other specification of ACB

0 Answers  

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VCB in closed position during opertion if vaccume break then what will happend? it has any protection ?

1 Answers  

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how do u get less voltage in star connection

4 Answers   BARC,

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How much must be gape bitween 2 cable on cable tray?

1 Answers   El Seif,

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what is reason in mv breaker the control supply voltage is dc not ac?

1 Answers  

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