09,22,2026 16 views
Comprehensive tester for transformer characteristicsUsed for high-voltage element and device withstand voltage measurement tests (using AC and DC withstand voltage testers), such as silicon stacks. It is mainly used to detect whether the product leaks electricity, whether it is well grounded, and whether it will harm personal safety. The main testing items include voltage, leakage current, insulation resistance, and grounding resistance.
During use, there are also some things to pay attention to. The following are some points that the transformer detection equipment has concluded:
1、 When using a transformer characteristic comprehensive tester, it should be noted that the DC high voltage output is negative voltage, while the ground is positive.
2、 When testing the comprehensive tester for transformer characteristics, the voltage should be slowly increased and the charging current should be less than the set leakage current value until the specified test voltage is reached. This is because when testing capacitors, there is a charging process when voltage is applied to both ends of the capacitor. At this time, there is a charging current in the testing circuit. When the current is greater than the set leakage current value, the voltage tester will alarm, causing the test to be interrupted and unable to proceed.
3、 Fixed voltage and reset start mode cannot be used for testing In the AC circuit, it is equivalent to the resistance in the DC circuit. Therefore, the safety tester generates a current in the AC circuit. When the current exceeds the set leakage current value, the voltage tester will alarm, causing the test to be interrupted and unable to proceed.
4、 Before the test, the capacitance reactance of the capacitor shall be calculated first, then the circuit current value under the test voltage shall be calculated, and then the preset value of the leakage current of the withstand voltage tester shall be adjusted to make it slightly greater than the circuit current value before the test.
5、 Testing components (equipment) with high distributed capacitance such as cables should be equivalent to capacitor testing.
