Test Method of Transformer Test Method of Transformer 1.Check whether there are obvious anomalies by observing the appearance of the transformer. Such as whether the coil lead is broken, de-soldering. Whether the insulation material has burnt marks. Whether the core fastening screw is loose.Whether the silicon steel sheet is corroded. whether the winding coil is exposed, etc. 2.Insulation performance test. Use the multimeter R×10k stop to measure the resistance value. Between the core and the primary, the primary and the secondary, the core and the secondary, the electrostatic shielding layer and the secondary and secondary windings, and the multimeter pointer should mean that the infinite position is not moving. Otherwise, it indicates that the insulation performance of the transformer is poor. 3.Coil on and off detection. The multimeter is placed in R×1 gear, and in the test, if the resistance value of a winding is infinite, it indicates that this […]
Transformer
Principle and Structure of Transformer Principle and Structure of Transformer The transformer is a device .which uses the principle of electromagnetic induction to change the AC voltage. The main components are the primary coil. The secondary coil and the core (magnetic core). In electrical equipment and wireless circuits, it is commonly used for lifting voltage, matching impedance, safety isolation, etc. In a generator, whether the coil is moving through a magnetic field or the magnetic field is moving through a fixed coil. The electric potential can be induced in the coil. Both cases, the value of the magnetic flux is unchanged. But the number of magnetic flux of the chain intersecting the coil is changed. Which is the principle of mutual induction. It is a device that uses electromagnetic mutual inductance to transform voltage, current and impedance. Transformer components It include the body (iron core, winding, insulation, lead), transformer oil, […]