What are the properties of CRGO?
|General physical and mechanical properties of CRGO steel|
|Silicon content||3-4 %|
|Yield Point (relative to rolling direction)||0 degrees • 330 N/mm2 90 degrees • 355 N/mm2|
|Tensile strength||0 degrees • 348 N/mm2 90 degrees • 412 N/mm2|
|Elongation||0 degrees • 11% 90 degrees • 31%|
What is CRGO lamination?
CRGO is the abbreviation for Cold Rolled Grain Oriented Steel, which is used in particular to laminate any heavy transformer as a core. These crystals are often arranged by cold rolling at room temperature to coordinate the direction of grain formation in a specific direction.
What is the thickness of the laminated CRGO steel sheet used in the core of the transformer?
These core laminations are required to be cut from special steel called as Cold Rolled Grain Oriented Electrical Steel or popularly known as CRGO. The CRGO is a special quality of steel which have a special grain surface and comes in a thickness of 0.23 mm, 0.27 mm, 0.30 mm, 0.35 mm.
What is CRGO and its application?
Application of CRGO Silicon Steel as Transformer Core Low hysteresis and eddy current losses. Excellent lamination factor leads to better and compact designs and hence low material required. High knee saturation characteristics. Very low level of magnetostriction leads to noise reduction.
What are the properties of CRGO and HRGO?
|Grain orientation is obtained by hot rolling to obtain soft steel to facilitates machining process.||Grain orientation is obtained by cold rolling so facilitates easy flux passing so that less magnetising force is required.|
|Magnetising current required is slightly more.||Magnetising current required is less.|
Why lamination is used in transformer?
The transformer core needs to be laminated to reduce the eddy current that has arisen from the induced voltages through the core, thereby reducing the heat loss of the entire core. Therefore the transformer core is laminated to minimize the eddy currents flowing through it.
What is CRGO steel?
It is used for the cores of power and distribution transformers, cold-rolled grain-oriented steel is often abbreviated to CRGO. CRGO is usually supplied by the producing mills in coil form and has to be cut into “laminations”, which are then used to form a transformer core, which is an integral part of any transformer.
Is Mica a magnetic material?
Our study shows that the magnetic response of mica comprises diamagnetic and paramagnetic components. The latter is quite significant at low temperatures and can be analyzed within the framework of Curie’s law and the Langevin theory, which indicate that it originates from isolated magnetic cations.
Where is CRGO used?
What are the advantages and applications of CRGO?
Application of CRGO Silicon Steel as Transformer Core Excellent lamination factor leads to better and compact designs and hence low material required. High knee saturation characteristics. Very low level of magnetostriction leads to noise reduction. Enhances ease of winding and improves productivity.
What is CRGO and HRGO?
* For manufacturing hot rolling process is used for the material so called as hot rolled grain oriented steel( HRGO) ii) CRGO ( Cold –rolled grain oriented steel): * The grain orientation of silicon steel is obtained by special techniques named cold rolling. * The process is without any high temperature.
How are the diagonals of a parallelogram supplementary?
Consecutive angles are supplementary (A + D = 180°). If one angle is right, then all angles are right. The diagonals of a parallelogram bisect each other.
How to prove the properties of a parallelogram?
Four important theorems relating to the properties of a parallelogram are given below: Theorem 1: In a Parallelogram the Opposite Sides Are Equal. This means, in a parallelogram, the opposite sides are equal. Given: ABCD is a parallelogram. To Prove: The opposite sides are equal, AB=CD, and BC=AD.
What are the physical properties of CRGO steel?
Properties of CRGO Steel. It is a soft magnetic material and has the following properties: High magnetic permeability. Reduced magnetostriction. High resistivity. High stacking or laminating factor allows compact core designs.
How are the opposite sides of a parallelogram congruent?
It is a quadrilateral where both pairs of opposite sides are parallel. There are six important properties of parallelograms to know: Opposite sides are congruent (AB = DC). Opposite angels are congruent (D = B).