Answer Posted / k.prakashchandra

Basic difference - CB trips when the trip coil is energized, in csae of contactor , the hold coil is de- energized to trip .

1 “earthing” for bonding of equipment and circuits to common plant earth electrode potential, 2 “protective earthing (PE)” when this bonding is required for personal safety provisions 3 “grounding” for interference suppressing bonding of screens, sys-tems with ground level 4. low-impedance earthing ? 5.primary earthing system and secondary earthing system what is that? 6.earthing electrode or mesh net earthing electrode ? very confusing , simple but very informative help required ? i will be very very thankful to you guys.

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Brief me about maintenance planning & sheduling of machine tool.

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my diploma certificate in my higher education college

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volts=230 c=10mf a=??

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We have a distribution transformer of 750KVA/11kv/440v and an AVR (Servo Stabilizer) of 750KVA on the LT side of distribution transformer. Also we have an ACB of 1200A on the output of distribution transformer (that is on the input of AVR). We want to have an MCCB on the output of AVR. What should be the rating?

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i am completed diploma in ece,and working in ht and lt lines.so is elligible diploma in ece for get electrical C Licence?plse give ur opinion?

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