Tips to Choose the Right Insulation Tester

It is quite challenging to choose the right insulation tester for the job. People often get confused about selecting the perfect model because there are so many in the market. So, how can you select the best high voltage insulation tester? In order to find the answer, you need to determine which type of testing is most important for you. 

Compare good insulation with poor insulation. Good insulation has a high resistance, while poor insulation has a relatively low resistance. Electricity can escape from inadequate insulation, which can cause damage to electrical circuits and machinery. You should choose the insulation that is right for your application. Below are some tips that can assist you in selecting the right insulation tester. 

A Guide For Selecting The Perfect Inclusion Tester

Test Voltage Range

The voltage range is the first thing to consider when choosing an insulation tester. They are high-voltage dc instruments, so high voltage is necessary to draw enough current to be able to measure it. In addition, testing a wide range of equipment would require multiple voltage capabilities.  

Measure The Range

Measuring the current is another factor that needs to be taken into consideration. It is essential to determine whether you are measuring a  leakage current or a polarized current. With an insulation tester, you can detect leakage current and then calculate the amount of contamination in the insulation. By using a spot reading, you can detect leakage current. Once the component is exposed to the test, take the resistance reading after every 60 seconds. This will allow you to determine the insulation leakage current. An extended range tester can measure the actual reading, establishing a longer timeline. Therefore, choose an insulation tester based on the type of insulation you require. 

Analog Display

 A pointer or travel analog display can provide an experienced operator with valuable information. If the pointer is continuously bouncing in between, it is important to check for smooth movement. On an electronic display, these details are difficult to detect. The operator must note down the readings from the scale when the pointe travel stops, increasing the chance of manual errors. The readings from these models can easily be noted down, so a digital model can remove them. A few testers combine digital accuracy with a moving indicator. 

Experience Level 

It is also important to consider your experience with insulation testers. Any tester may be suitable if you are an experienced user and have a good grasp of interpreting readings. The use of limited functions, combined with some type of on-the-job training in insulation resistance testing, is recommended for those who are less experienced. Consider the following tips when choosing an insulation tester. Following the primary considerations, you can filter these insulators based on their price. This allows you to choose models based on their performance and cost. If you are seeking an insulation tester, then buy the best products online at a low price.

Power Source

Alkaline batteries (like AA), hand-cranks, and rechargeable batteries can all deliver the same level of voltage you’re looking for. 

For example, batteries free the operator from physically “cranking,” while hand-cranks take away the dependence on batteries or the possibility of human error. You should use hand cranks when you are feeling like working out. It is probably the most convenient to use rechargeable batteries.

Voltage Detection

The models will all detect unwanted voltage on the item being tested, which is great. Whether you want a visual display or an audible signal is completely up to you.

Terminal guard

The guard terminal should be taken into account if you want to eliminate certain leakage components. It is unlikely that electricians will need this third terminal, but maintenance personnel might.


With insulation testers ranging from a few hundred dollars to several thousand dollars, the market has something for every budget. Price doesn’t always indicate quality. No matter what your budget is, you will get a model that will fit your testing needs, as well as offer an array of other features.

Extra Features

There are a few extra features worth mentioning. When selecting a tester, please consider the following. 

While measurement accuracy and reliability remain the same from model to model, the additional capabilities and testing flexibility vary between units. For example, the latest models have pre-programmed tests, such as Polarization Index, Step Voltage, and Dielectric Discharge results from calculation and storage, download capabilities, timed tests, leakage current measurements, and “burn mode.” Depending on your situation, they are convenient, even if they aren’t necessary. So if you are comfortable with the cost, go for it!

Final Words 

That was all! You can choose the perfect insulation tester using all the above tips and tricks. Consider every blog statement as it will guide you to select the best tester for your work. In the same way, you can test the ac dc clamp meter also. This instrument is clamped around a live wire for measuring the current.


Sarah Wrightt is a writer in the day and reader at night. She is a result-oriented and dedicated Content Writer with exposure to a wide range of technologies and a strong believer in agile product development. She is always willing to learn and explore ways to make the most of the content. Visit Info Ocean Hub or Your Article Store for more blogs

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