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When the output of the high-voltage power supply is short-circuited or arcing occurs, a large short-circuit current will be generated instantly. The larger short-circuit current value is mainly limited by the current-limiting resistor inside the high-voltage power supply. The energy of the short-circuit current mainly comes from the high-voltage power supply. The energy stored in the capacitor of the rectifier circuit is very short-lived, only about a few hundred microseconds. After that, due to the action of the current loop, the output current immediately returns to the limited current value, thus indirectly achieving short-circuit protection.
The high-voltage power supply has an arc protection function (anti-arc function).
When the output of the high-voltage power supply is short-circuited, the system automatically turns off the output pulse in the PWM circuit quickly, so that the output of the high-voltage power supply is zero. After a certain time delay, the system makes a test. If the short circuit is not removed, the system will continue to test or The system will shut down and alarm after testing for a certain number of times. If the short circuit is detected and removed, the system will resume normal operation.
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