Answer / guest

C.R.G.O (Cold-rolled grain-oriented sheet steel) is used for reducing the core losses in transformers.
Each type of steel has "grains" which consist of "domains". These "domains" are nothing but electrical charges oriented in any random direction.

Core loss= Hysteresis + Eddy Current Loss

Reduction of hysteresis loss:
(1)The size of the "grains" in a CRGO steel are purposely "grown" & made bigger & are about 10 times the size of the grains in regular steel.
(2)The grains in CRGO steels are all aligned almost parallel to the direction of rolling of the steel(i.e the length of the steel).

Reduction of eddy current loss:
A special carlite insulation coating on the steel being done so as to reduce the eddy current loss.

Answer / divya pundir

crgo is cold rolled grain oriented........steel used 4 tf is
cold rolled because it allows a much higher flux density of
around 1.8wb/m2 as compared to hot rolled steel...nd
therefore making it possible 2 minimize the core material nd
hence d core losses ..............

Answer / manoj

this material when magnetized in the rolling direction,has
low core loss and high permeability.

Answer / chetan

Less of the loss

Answer / kadari pradeep reddy

crgo size is large campare to regular steel so reduces the hysterises losses and silicon percentage is higher so so reduces eddy current losses (core losses (or) iron losses=hysterises losses+eddy current losse)

Answer / v.g.praveen

In order to improve the efficiency of the transformer along
with IR loss minimisation, Regards, V.G.Praveen

What is the difference between a 3 winding and 2 winding Potential Transformer

0 Answers   Engineers India,

Getting nusense tripping in a 11KV soft starter, have checked all it control supply & contactors but did not get any fault please help.

3 Answers  

prove that inegration of { e^z / z^2 + pi^2 }dz is equal to i/pi by Cauchy Residue Theorem.

1 Answers  

In three phase energymeter the spindle rotating backward why?

1 Answers  

I have a generator of 300kw.400V,50hz . what is means can i assume the load Red Phase with Neutral 300kw.Yellow phase with neutral 300kw and Blue with neutral also 300Kw. or - red with neutral 100kw same as yelloe and blue phase also giving 100kw with neutral respectively

3 Answers  

How would your past experience translate into success in this job?

0 Answers  

how to match 0 -10V with 4 - 20mA

3 Answers  

What is resistance of 50meters, 16sq.mm, single core copper cable?

0 Answers  

What will hapen if we connect more capacitors than required for powerfactor control? Exactly what will be the effect on power system?

2 Answers   Mandovi Pellets,

what is stray loss in transformer?

19 Answers   Vijai Electricals,

how many units consumed by a 33/440 2000 kava transformer in a day

3 Answers   Infosys, MRF,

how define the torque in ac drive. from electrical side in the drive friquency ,voltage and current three factor is there.

0 Answers