What's the difference between withstand voltage tester and insulation tester?

As a designer who develops professional withstand voltage testing instruments, I have a deep understanding of this aspect. The following introduces the difference between withstand voltage tester and insulation tester:

Although withstand voltage tester and insulation tester are both instruments for testing electrical equipment, there are still some obvious differences between them.

Withstand voltage tester aims at testing, which is mainly used to test the durability and insulation performance of equipment under a specific voltage, so as to ensure the safe operation of equipment under the specified working voltage. The insulation tester is used to test the insulation performance of equipment, that is, the electrical isolation ability and dielectric strength of equipment under normal working voltage.

According to the test principle, withstand voltage tester usually adopts the test method of high voltage and high current to simulate the actual working voltage and current, and carries out the withstand voltage test on the equipment to test the endurance and insulation performance of the equipment. The insulation tester evaluates the insulation performance of equipment by applying a certain voltage and measuring parameters such as leakage current or dielectric loss of equipment.

Judging from the test range, the test range of withstand voltage tester is usually wider than that of insulation tester. The voltage range that withstand voltage tester can test is usually tens of volts to thousands of volts, or even higher. The test voltage of insulation tester is usually low, generally below several hundred volts.

From the usage scenario, withstand voltage tester is mainly used for quality inspection, regular maintenance and preventive testing before leaving the factory. The insulation tester is mainly used to monitor the insulation performance of the equipment in real time during the operation of the equipment to ensure the safe operation of the equipment.

In a word, withstand voltage tester and insulation tester are both important tools for testing electrical equipment, but they are different in purpose, principle, scope and scene. In actual use, appropriate instruments should be selected according to specific conditions to ensure the safety and reliability of the equipment.

For more information about withstand voltage tester and insulation tester, it is recommended to consult relevant product manuals or relevant industry experts.