if we use contactor & MCCB both in a feeder.in this feeder rating of contactor is higher or lower or same of MCCB rating & why?

1 Answers  

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Sparking occur when a load is switched off because the circuit has high – a.) Inductance b.) Capacitance c.) Resistance d.) None

3 Answers   Ecil,

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In our plant we have installed new MCC with ELR and CBCT which is detecting some leakage current in the system but it leading to some confusion when to check that in which feeder which is drawing current we put off the whole panel itself but still CBCT detecting some leakage current so can anybody ans me , where i am going wrong or how to detect whether its actual leakage or CBCT malfunctioning.

0 Answers   Saint Gobain,

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What is application of MCB & How it works

1 Answers   TATA,

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what is the effect come when i changed the alternator exciter field winding DC palority(+ve & -ve)which is coming from AVR.

1 Answers   Wartsila,

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Which rccb 30ma,100ma,300ma sensitivity should be used in domestic line and what is difference, advantage and disadvantage of all three

2 Answers  

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What kind of maintenance is conducted for generator

1 Answers  

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Wht is the meaning of floating neutral

9 Answers   Cipla,

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whats the diff b/w mpcb and mcb?weather it trips on single phasing or not.

9 Answers   Electra Power, Essar,

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what is main reason for grid earthing for any industry

4 Answers  

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Why celing fans will rotate slowly after some days.?

2 Answers  

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difference between temperature sensor and temperature switch

3 Answers   ABB,

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