Submitted Questions

Current transformer protection class

What is the 5p 10 , burden in current transformer?

Answered by: shrinirmal on: May 1st, 2009

5P - Accuracy Class
10 - Composite Error

Answered by: sanjay.patel on: Nov 28th, 2008

It means CT have minimum inaccuracy is 5% when it experiences 10 time of it's rated current.

5 is minimum% inaccuracy
P mean Protection Class
10 How much time of rated currentis Rated current

Neutral ct

Why do we use neutral ct in a transformer?

Answered by: EEE on: Mar 18th, 2012

A neutral CT is usually connected to the neutral of a star connected transformer. for balanced condition the current through neutral is zero.but if any unbalance occurs such as a ground fault, then th...

Answered by: shamsauh on: Oct 21st, 2009

Neutral CT is generally used on earth connector connecting the earth or ground & the star point of a Generator or Transformer or reactor(generally we can say electrical machines).Neutral CT is sel...

Busduct & rising main

Explain what are busduct and rising main? Where it is used?

Answered by: sindhejs on: Feb 16th, 2009

Bus ducts are the mechanical protection to the bus bars, may be rectangular or square hollow boxs.

Voltage drop

How to calculate the voltage drop in cable?

Answered by: ssooria on: Dec 3rd, 2008

1) what is the load=      KW2)from that calculate the actual current, I  =             KW   &nb...

### Career Counselling

Have Career Question?