What is the minimum insulation value required for a cable
between phase to phase and phase to earth of 380 Vac 50Hz
circuit, having load arround 800 amps.
Answer Posted / kaleem
R= V/ I
R = 380/ 800
R = 0.475 Ohm.
| Is This Answer Correct ? | 3 Yes | 1 No |
Post New Answer View All Answers
we have earthmat at 110KV substation.we would like to take earth resistance.b some says that by connecting earth megger terminals (C1,P1) at middile point of earthmat (at riser) will cause voltage gradient at other earthmat nods and dont get exat earth resistance.when connecting at end nods will get exat value . is it correct .please explain
why steady state stability limit is greater than transient stability limit ? How it can be explained ?
How to configure the drives in PLC, through Profibus commnication. And to how to address it?
How to select cable the size, what is the parameters use and what is the formulas use for this cable size calculation?
while doing high potential for 11KV 3 core cable how much leakage current will obtain?, what will be acceptance value?
What is the dependency of stiffness on load angle??
why does the magnetic balance tests at transformer?
Will any motor burn if voltage provided is lesser than the rated voltage???? If yes, then how is speed control possible with voltage control
power transmission pole used one support , that only for support or earthing
What should be the height of basement according to NBCC code?
wat is the first thing dat is needed, 2 lay a cable in some area??
How 3 phase invertor works?
anyone please send transformer parameter design formulas & details of tap changer ? plz i have interview this week its more helpful for me ?
Why two phase welding machine is used instead of three phase welding machine.
how can we phase identification in a distribution line,how we recognise that which phase is coming for a house hold connection.help me............