insulation tester megger

How to Choose the Right Insulation Resistance Tester (Megger)

Choosing the best insulation resistance tester to do the job correctly is essential. With so many models on the market, people sometimes get lost in choosing the right one. So, how are you going to pick a suitable insulation tester? To find out the response, it is essential to understand which method of research is critical.

Examine strong insulation against lousy insulation. The excellent insulation is of high resistance, while the weak have comparatively low resistance. Impairment in insulation can cause electrical leakage, which can be harmful to electrical circuits and machines. But you need to get the one that’s best for your application.

Check the tips below that will help you choose the right insulation tester megger.

What Equipment Needs Testing?

First, make a list of common tools that you plan to need for an insulation resistance inspection. Write down the device’s nominal voltage level found on the machine’s nameplate and the average amount of insulation resistance checks you expect to do annually. The nominal voltage will help decide what test voltage the tester requires. The reported annual number of insulation resistance tests could be unexpected. With further testing to be carried out, the test instrument’s overall accuracy, reliability, and convenience features become more critical.

What Are The Voltage Requirements?

The output test voltage applied to the equipment should depend on the prescribed insulation resistance test voltage of the manufacturer. If test voltage is not listed, use the industry’s best practice results. Make sure you use an insulation resistance tester to supply the necessary output test voltage. Not all insulation resistance testers are the same: some may only provide up to 1,000 VDC, while others can supply 5,000 VDC of test voltage or more.

Where Are The Tests Going To Take Place?

Considering the testing environment and other future applications of the insulation tester megger, it can help pick additional functions. For example, using one instrument for both a traditional digital millimeter and isolation resistance testing will add convenience. Because all circuits and devices must be electrically de-energized before the insulation resistance tester is attached to the equipment, it is also less practical to bring both the optical voltage test multimeter and the insulation resistance tester to different locations.

Experience level?

Any research instrument is just as successful as the individual’s competence and skill level operating the equipment and interpreting its readings. When choosing an insulation resistance tester, remember the experience of the people conducting the insulation resistance tests. Simplicity and limited functionality can be seen as though the application requirements are minimal and the level of expertise is minimal.

Measure the Range

Present measurement is another aspect that has to be taken care of. Look whether you test leakage current or polarization current. Leakage current can be detected using an insulation tester, and then you can measure the amount of leakage in the insulation. You can use spot reading to get the leakage current. Apply the test voltage to the test part and then read the resistance after 60 seconds. You may calculate the leakage current through the insulation in this manner.

Digital or Analog Display

An analog display with a pointer or a journey will display useful information from an accomplished operator. It is essential to verify if the lead is running smoothly or only waving in between. It isn’t easy to recognize this information on an electronic monitor.

Ultimately as the point travel ceases, the operator must remember the scale readings that maximize the manual error. It can be removed using a digital model, and it has a simple role that can be quickly identified.

Leave a Reply


We are glad that you preferred to contact us. Please fill our short form and one of our friendly team members will contact you back.