what will happen if secondary of potential transformer
(220kv/110volt) of any metering core or protection core
(cables) of any phase got earthed??
As the secondary voltage is only 63.5 V wrt ground ,nothing
happens if the contact is with the dry earth . If there is
any dip in voltage or blowing out of fuse under other
conditions , energy meter may record less and the distance
relay may act in the protection scheme with directional
relay becoming non-directional
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Before i went to bed my master bathroom lights were working fine. At 2 am, when I went to use the lights, none of them were working. The outlets throughout the bathroom work, but the lights and fan above the toilet don't. I have two panels of switches. The one panel has four switches. One of the switches turns on the hall light, and that works. The other three are to other lights, and they don't. The other panel has three switches. One of those is to the fan, and the other is to a light above the toilet. The other is a to light that is also on that other panel. I tried the breakers, and the one that turns off the outlets, marked for the bathrooom, turns on and off the outlets. None seemed to be tripped. I checked the lightbulbs, and they are fine. Please help
Explain about Dubai electrical sysaem? Explain about Dubai drinking water system? Explain about Dubai Burj tallest building Electrical,Water.etc.. maintenance system?
ABOUT AC GENARETORS AND MAINTANANCE AND TYPES OF GENARETORS
where this neutral connection goes after returning from the load(home ,factory,industries).Is it grounded at the transformer side or atthe generator side .If it is grounded then we also ground the earth connection.is there any problem with this.
a new 3ph induction motor doesn't rotates their ratted speed, why ?
what will happen, if both relay contact has live supply, and coil of relay activated
A 30KW motor running at 1450 rpm draws 56A, how would you determine if this is correct or not?
What are the material used for inductance coil?
how does relay works?
if step down transformer step down the voltage,will current will also be proportional step up. If yes then how transformer handle such a large current?
Why we are not using capacitor in line when load on Genset?
Why transformer is not rotating?
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