1. Short circuit the "input" and "output" terminals of the transformer, and test the insulation resistance between them and the ground wire with a megger. When measured by 1000V megger, the resistance is greater than 2m Ω. 2. The section wi...

The same name terminal of oil immersed transformer specifies that the terminal where the induced current flows into the coil and the positive terminal of mutual inductance voltage in another coil are called the same name terminal of two coup...

The test items required for the transformer factory test are transformation ratio, group, direct resistance, no-load, load, capacity, power frequency withstand voltage, inductive withstand voltage, insulation resistance, dielectric loss, par...

The International Electrotechnical Commission (IEC) is the earliest International Electrotechnical Standardization Organization established in the world, which is responsible for international standardization in the field of electrical engin...

Pole transformers are distribution transformers mounted on electrical service poles. Pole transformer is a common distribution transformer used to convert distribution voltage into 120 / 240 V power supply for household and small capacity co...

Distribution transformer is one of the important equipment in the power supply and distribution system of industrial and mining enterprises and civil buildings. Because oil immersed transformer has the characteristics of excellent performanc...

Constant voltage transformer is an ideal regulated power supply for precision electronic instruments, microcomputers and CNC equipment. There is a "day" shaped iron core in the constant voltage transformer. The primary coil is in one window ...

When the transformer is powered on, there is a buzzing sound, which is mainly the function of high-voltage magnetic flux. During normal operation, the sound of the transformer is uniform. When there are other noises, carefully check the caus...