The burden of dry-type transformer is also called the load of dry-type transformer, and the load level of dry-type transformer is called the load rate of dry-type transformer. The load rate of dry-type transformer has certain periodicity. What is the relevant regularity? The following are some ways for us to make a good reference.
Electrical engineering terminology, general term for dry type transformer DC transformer ratio. Not very common, general electrical engineering books do not give a detailed introduction. Definition: Transformation ratio refers to voltage ratio or current ratio, which refers to the ratio of voltage or current between primary winding and secondary winding of machinery and equipment that convert voltage or current. Transformation ratio refers to voltage ratio or current ratio. It refers to the ratio of voltage or current between the primary winding and the secondary winding of machinery and equipment that convert voltage or current. In the dry-type transformer, the ratio of the induced electromotive force E1 at the primary side to the E2 at the secondary side is called the transformation ratio of the dry-type transformer, which is indicated by k, i.e. k=E1/E2.
The magnetic induced potential difference between the primary winding and the secondary winding of the dry-type transformer is positively related to the coil turns of the winding.
The ratio of the input voltage of the primary winding to the output voltage of the secondary winding is equivalent to their coil turns ratio. The ratio K is called the transformation ratio index.
example:
It has been known that the volume of dry-type transformer is 100kVA, and the three-phase currents assessed are A=108.3A, B=102.9A, and C=72.6A respectively. The higher load current and load rate of dry-type transformer are calculated.
Solution: It is known that the standard 100kVA is the active power, so the active power should be used immediately instead of the power factor.
The higher load current is the current that can operate for a long time and cannot exceed the rated current of the dry-type transformer. I=100/1.732 × 0.4=144A;
The load rate is equal to the average current divided by the rated current. Load rate of dry-type transformer=(108+103+73)/3/144=66%.
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