When we have earthing mesh or underground earthing network
in industrial plants, weather we have NT-S or NT-C-S kind
of earthing system, so eventually weather we must use 4 or
5 wire in 400 volt level (For example 3×150+70 mm2 or 5×150
mm2) in this connection I would like to know exactly the
paragraph of IEC or IEEE number
No Answer is Posted For this Question
Be the First to Post Answer
What is UJT PNP, NPN transistor & working principles?
Generally we denote power in 'p',voltage in 'v'but why can't we denote current in 'c' instead of I.
To measure insulation resistance of 11KV cable between core & armour, what should be the test voltage & duration?
How do you classify the different types of torques?
what is HVDC, what are advantages over conventional system?
What is the harm if we install primary side 11 KV VCB at a distance of one Km from the 11/3.3KV 12.5 MVA transformer through 11 KV cable.
What will be the fault current of any system when its generation is 10% of BASE generation( FUll Load )?Will is 10% or the same as full base calculation?
practically What is power factor
why phase always came one direction in 5pin socket(right hand or left hand) which direction and why..........?
Why at the starting of induction motor current is high?
What is difference between Over Current & Earth Fault protection?
what is reactive power (MVAR) and how it is control? how it is generate in powerplant?