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Why do we need to conduct insulation testing?

:2023-08-11 09:32:05:

Why do we need to conduct insulation testing?

1. Security

The most important reason for conducting insulation testing is to ensure public and personal safety. By conducting insulation tests on disconnected current carrying conductors, grounding conductors, and waiting to be grounded conductors, the possibility of fire caused by short circuits can be eliminated.

2. Extend equipment life

Insulation testing is also of great significance for protecting and extending the service life of electrical systems and motors. Periodic maintenance testing can provide data for analysis while predicting potential system failures. In addition, when a fault occurs, it is also necessary to determine the cause of the fault through insulation testing.

3. Save unnecessary losses

When the instrument malfunctions, it may cause significant production or financial losses to the factory. Not to mention, the cost of completely replacing equipment after a malfunction is much more expensive than simply performing specific maintenance on insulation materials. Through regular insulation resistance testing, timely identify and solve problems.

4. Prevent equipment damage

If you are concerned about damaging the device, please stop. The withstand voltage tester may damage the equipment when boosting, but the insulation tester will not cause problems in your testing project. Even if the voltage is quite high, the output current is limited to a few milliamperes, so it will not cause damage.

5. Convenient for testing personnel

The insulation resistance tester is very convenient to use, and the system will have some built-in parameters. Technicians can directly select the parameters or set the desired parameters during use, which can quickly and accurately measure data.


The insulation resistance tester measures the leakage current during pressurization and calculates the insulation resistance value through Ohm's law. The design purpose of such instruments is to apply and control the test voltage in a "non-destructive" manner. Although the voltage provided is very high, the current is very limited. This avoids secondary damage to the equipment due to poor insulation and ensures the safety of operators.

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ZC-430C Digital insulation resistance meter also known as megohmmeter, high voltage insulation resistance tester, etc., for the insulation resistance test. The instrument has a large LCD screen gray backlit display, data storage, data access, alarm, automatic shutdown and other functions. At the same time, it also has the function of measuring DC voltage, AC voltage, absorption ratio and polarization index of DC voltage. It is suitable for measuring the resistance value of various insulating materials and the insulation resistance of transformers, motors, cables and electrical equipment.At the same time, it can output a variety of different voltage levels with the step-adjusting voltage function.


Kvtester Electronics Technology Co.,Ltd. is a high-tech enterprise specializing in power testing, testing, research and development, production, and sales of testing equipment. It has been engaged in the electrical testing industry for many years, and its products are of high quality. We welcome customers to come and purchase.


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