why we use copper earthing for neutral while for body GI.
Chennai Metro Rail Limited CMRL, Valeo Lighting Systems India Private Limited,
1 4971we 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
1690I have a small system with two motors that are running on 380 vac, 60 hz. These motors are expensive and I usally get them from Brazil. I am adding another motor to the system, but I want to purchase a 480 vac, 60 hz motor to use. It will be on a VFD that is rated fro 380 thru 480. Is this posible and will I have to use a larger motor and derate it?
1505Generation of voltage for each phase are same of a turbogenerator.Although the short circuit current flow when two phase of turbogenerator are shorted(where current can't flow without potential difference),why?
1617Post New Electrical Engineering Questions
What would cause a 240v choke that should give 110v out on a 16w lamp to gradually increase to 160v?
I have a CT meter with ratio 60/5. The meter reading of previous month was 3290.49 and that of current month was 3797.26. How many chargeable units as per normal meter should be my reading.
how many types are their in switchyard or substation(like D,I TYPE), what is differant between them
How time response of the system is divided?
what is the need to express current and voltage in rms value? rms value is also called as effective value,what is effective value?
Explain in brief description about the operation of DG sets.
In parallel operation time both NGR’s close or not close if both close what will happen
hey guys help me out.....what are the industrial uses/functions of nozzles in industries
why the field winding in dc motor is not short circuited eventhough dc supply is applied across the winding
why are distributed windings generally used in alternators?
how we will deside the high voltage value
WE ARE PLACE A NEW 75 KW MOTOR FOR JPF.IT IS CONNECTED IN M.C.C. WHEN WE ARE STARTING M.C.C.INCOMER IS TRIPPED.THEN WE ARE CONNECTED IN P.C.C WITH A MM30 RELAY PROTECTION THEN WE ARE STARTED MOTOR WILL RUN SMOOTHLY.
what is upper impedance and lower impedance of a distance relay
why there using acb enclosure in big buildings
explain supply side and demand side energy management with advantages & disadvantages