Answer Posted / henry vakharia
Current transformers are classified in two categories viz.
protection and measuring classes.
In protection relay, the earth fault is detected from the
earthed terminal or say the common terminal shorted
together and then grounded, which makes the relay detect
the earthfault other than its core function of protecting
equipments from high voltage surges.
In measuring relay, the C.T. is grounded to give protection
from the primary high voltages surges.
| Is This Answer Correct ? | 2 Yes | 3 No |
Post New Answer View All Answers
how many parameters can integrate with fire alarm basically ?
what will happen if synchronous machine rotor fed from single phase ac supply
Where is the best place to mount distribution panel in a house.
What is zero of the system?
if in 3-phase system voltage=440V,frequency=60Hz, current=400A. then if it is single phase then current=? and if it is single phasing then current=?
what is the effect of connecting three phase supply lines to three phase auto transformer output terminals through a fuse of 10Amp and a circuit breaker (MCB). Is this connection permanently destroy the transformer?
If any cable burnt how can we identify it burnt by high current of high voltage?
Explain the function and difference of Restricted earth fault, simple earth fault and sensitive earth fault with connection diagram.
Define settling time.
transformer phasor diagram under load explain it?
How do you compute voltage drop and cable size over distance?
sir pls send the je exam - 2008 and other model question papers..
how to find Harmonics and types as per the equipemnts
How to calculate the volumetric capacity of a oxygen & Nitrogen gas Cylinder if pressure is 145 kg/cm2 & water capacity of cylinder is 67 liters.
how to calculate the Neutral transformer impedance?
