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CRGO stands for :COLD ROLLED GRAIN ORIENTATION which is used in transformer core assembly.Transformer problem occours 40% because of using Non prime CRGO as lndustries are using frequently so life of transformer reduces.
Both have different chemical composition like amount of silicon differs.
Rest of difference you can see through net like density diffrence and their chemical and mechanical properties.
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What is CRGO?
Cold-Rolled Grain Oriented silicon steel. Used in transformer core laminations. whatisCRNO? in transformers
During core bulding process why crgo lemination are used?
Transformer cores are chosen to limit eddy currents, which cause heating and losses in the core. Very thin laminations minimize this overhead cost of running a transformer by reducing losses associated with eddy currents.
Which is best core or shell transformers?
Because the flux leakage is less in shell type than that in core type T/F.Additional AnswerA shell-type core's magnetic circuit is equivalent to a parallel electric circuit, so it has a lower reluctance compared to a core-type core of similar cross-sectional area.
What is meant by maganetization current?
It is the one which is used to produce flux in transformer and main field flux in motor or generator. Flux is proportional to the current passed through the coil. Flux is inversely proportional to the reluctance of the medium that the flux passes through. Flux is analogous to current. Reluctance is analogous to resistance. MMF is analogous to voltage. so if there is a coil carrying 5A current and 10 turns it produces 5*10 = 50 Ampere Turns MMF . so as the current increases MMF increases. If reluctance of the medium used is high there will be more flux. Let us take a transformer in that in order to produce EMF in the secondary we have to give flux from the primary for that we need a current in the primary that is called Magnetizing current . Any way if we load the transformer , the transformer primary carries (N2 / N1 ) * I2 current in addition to magnetizing current. Apart from these two currents there will be another current which is responsible for core loss in the transformer. Please note that all these three currents are at different phase angles i.e. they are not in same phase. Medium for the flux in the transformer is core. If it is a iron core reluctance is more , to produce same EMF it will take more magnetizing current. If we use CRGO steel as core reluctance is less. For less magnetizing current itself we get flux for the required EMF in secondary.
What is CRGO?
Cold-Rolled Grain Oriented silicon steel. Used in transformer core laminations. whatisCRNO? in transformers
What is the Technical meaning of CRGO Lamination?
To minimize hysteresis loss
What is cold roll?
Cold rolling is simply crushing the steel into thin plates (done using large rollers) when the steel is at a low temperature. Cold rolled, grain oriented (CRGO) silicon steel is often used in transformer cores. When Steel is heated (annealing), the silicon - iron crystals become aligned. Cold rolling crushes the crystals into random positions. This helps minimize stray losses in transformers, making them more efficient. A non-electrical application of cold rolling is in the making of samurai swords.
During core bulding process why crgo lemination are used?
Transformer cores are chosen to limit eddy currents, which cause heating and losses in the core. Very thin laminations minimize this overhead cost of running a transformer by reducing losses associated with eddy currents.
Which is best core or shell transformers?
Because the flux leakage is less in shell type than that in core type T/F.Additional AnswerA shell-type core's magnetic circuit is equivalent to a parallel electric circuit, so it has a lower reluctance compared to a core-type core of similar cross-sectional area.
What is meant by maganetization current?
It is the one which is used to produce flux in transformer and main field flux in motor or generator. Flux is proportional to the current passed through the coil. Flux is inversely proportional to the reluctance of the medium that the flux passes through. Flux is analogous to current. Reluctance is analogous to resistance. MMF is analogous to voltage. so if there is a coil carrying 5A current and 10 turns it produces 5*10 = 50 Ampere Turns MMF . so as the current increases MMF increases. If reluctance of the medium used is high there will be more flux. Let us take a transformer in that in order to produce EMF in the secondary we have to give flux from the primary for that we need a current in the primary that is called Magnetizing current . Any way if we load the transformer , the transformer primary carries (N2 / N1 ) * I2 current in addition to magnetizing current. Apart from these two currents there will be another current which is responsible for core loss in the transformer. Please note that all these three currents are at different phase angles i.e. they are not in same phase. Medium for the flux in the transformer is core. If it is a iron core reluctance is more , to produce same EMF it will take more magnetizing current. If we use CRGO steel as core reluctance is less. For less magnetizing current itself we get flux for the required EMF in secondary.
