what is CRGO Transformers?
Answers were Sorted based on User's Feedback
Answer / pankaj sharma
CRGO Transformers:- are the transfomrer in which the core
material used is "Cold Rolled Grain Oriented " Steel. CRGO
steel core is having less hysteresis losses therefore the
efficiency is high as compared to normal core transformer.
Is This Answer Correct ? | 77 Yes | 1 No |
Answer / sameer pise
Cold Rolled Grain Orientation silicon steel is material used
for transformer.silicon is BCC crystal and the grains of
silicon are not in alignment which reduces the permeability
of material.So in order to increase permeability Cold Rolled
Grain Orientation method is used thats why the name is CRGO
silicon steel
Is This Answer Correct ? | 8 Yes | 0 No |
Answer / anuj kumar
Every type of steel has "grains" which consist of "
domains". These "domains" are nothing but electrica
l charges
oriented in any random direction. Therefore if a Tr
ansformer were to be made of Mild Steel used as cor
e material,
the core loss would be approx. 16 to 17 w/kg at 1.5
T/50Hz and the size of the Transformer would be app
rox. 18 to
20 times the size of a Transformer manufactured wit
h GO steels.
The main difference between regular "carbon" steels
and GO steels are:
1.
The size of the "grains" in GO steels are purposely
"grown" and made bigger and are about 10 times the
size of the grains in regular steel, thereby reduci
ng the hystereses losses. The size of grains in CGO
S is 2
mm to 5mm and HGOS is 5mm to 20mm. In regular steel
s the size of a grain is less than 0.5mm.
2.
The grains in GO steels are all aligned almost para
llel to the direction of rolling of the steel (i.e.
the length
of the steel). The angle of mis-orientation (i.e. d
eviation from the rolling direction) is maximum 7%
for
conventional GO and less than 3% for Hi-B GO steels
. This reduces the hystereses losses as "switching"
(explained later) becomes easier within the domains
.
3.
The chemical composition of the GO steels has about
3.2% of Silicon as an alloy, thereby increasing th
e
specified volume resistivity of the steel, thereby
reducing the eddy currents. GO Steels are also
decarbonised and have no more than 0.06% of carbon
in their chemical composition, which prevents
aeging of the steel.
4.
There is a special carlite insulation coating on th
e steel, which reduces the inter-laminar eddy curre
nt
losses within the core.
Is This Answer Correct ? | 8 Yes | 1 No |
Answer / gtmanikandan
GRGO means Cold Rolled Grian Oriented Silican Steel
Lamination, it is Magnetization loss is very small comper
to other steel lamination plate
Is This Answer Correct ? | 9 Yes | 9 No |
Answer / bhanu
What is fuse material ? Mention different types of fuse material.
Name - Bhanu
Electrical engineering
3rd semester
K.L POLYTECHNIC , ROORKEE , HARIDWAR
Is This Answer Correct ? | 0 Yes | 0 No |
what is LOS(line of sight)?
Testing procedure of DG alternator stability test
What is electrical grounding?
After fault clearing in Tr line, whether the Metering core of CT is comes to normal condition from saturation region & its works as a normal condition?
where the protection CT in neutral of transformer be located, before bifurcation or after bifurcation and why.
briefly explain principle of resistance welding
Hysteresis loss in a core is due to what reason or property of the material used for that core?
how to select fuse rating for a 3-phase motor ???
why tertiary winding is used in transformer with diagram?
how single phase preventer works ?
Is it necessary to install Lighting Arrester on both side side (i.e HT and LT) of Transformer in a transmission substation? if yes Why on both side?
How to calculate 33 kv panther conductor line losses.
1 Answers Construction, Orange,