Question { 12553 }

what are trouble functions of transformer?ex. prv
trip,oltc,oti,wti.explain detail.

Answer

1. PRV Trip :- The transformer inside when abnormal
pressure is build up the PRV Trip occurs.

2. OLTC :- It is the on-load tap changer. Through which tap-
changing of the transformer is done to lower or raise the
taps of the transformer.

3.OTI :- Oil temperature Indicator. It indicates the oil
temperature of the transformer.It gives alarm & later trips
the transformer when the set temperature is reached.

4. WTI:- Winding temperature Indicator. It indicates the
winding temperature of the transformer.It gives alarm &
later trips the transformer when the set temperature is
reached.

Question { Honeywell, 6638 }

What is PTZ Camera???

Answer

Ltd means pan ,tilt and zoom.this camera is used for long range vision.it revolves in 370 degrees.so you can view in all angles

Question { 15983 }

What do u mean by Line voltage Monitor?Where it is used in a Power system?

Answer

Lvm means line voltage monitor.which is used in dg sets

Question { 4663 }

what is the use of providing earthing for tanks? i know for
lightning we use earthing ? Here one of my ONGC project
there is no need of lightning protection and there is no
power connection near by tank in that situation also ONGC
asking earthing for tanks but we didn't understanding why
they asking earthing? is anybody tell exact answer?

Answer

All the bulk storage tanks need be bonded to earth. This is known as bonding.when any liquid is poured from one source to tank,then static charge will flow.that is why bonding is required.

Question { 5237 }

What meant by XLPE cable

Answer

Cross linked poly ethylene