High-frequency transformer ignition and arc processing method

2019-05-07 11:07:11 JUKE CHINA ODM OEM Transformer factory Read

High frequency transformer ignition and arc processing method

 High-frequency transformer arcing means that the voltage exceeds the tolerance of the air to cause the air to ionize into a conductor, that is, to generate an electric arc. The arc generally bypasses the insulator along the surface of the insulator and can cause damage to the insulator. If the high temperature of the arc causes the insulator to melt or chip. As shown in the switch, the rated short-circuit breaking current is 20KA, which means that the short-circuit tripping contact arc extinguishing heat element in 20KA is effective. Exceeding the limit of the arc-extinguishing element is not guaranteed, and arcing will occur.

Generally, high-frequency transformers are fired and arced, but they can still work normally. It is necessary to test ARCING. But if it does not work properly, then it is necessary to measure HI-POT (may be a coil to coil short circuit, or a coil to core) Short circuit fire.) Under normal circumstances, HI-POT and ARCING must be tested during the production of high-frequency transformers.
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The HI-POT test is mainly to test whether the transformer is damaged and whether the transformer can reach the rated withstand voltage requirement. The ARCING test is a test specifically for arc discharge to detect arcing anywhere in the transformer. Avoid shortening the life of the transformer due to arcing. Generally, the level of the high-frequency transformer ARCING test is set to 6, which is 5.5 mA.