How is the Dielectric Strength of Electrical Matting Measured?

 

When you are about to buy electrical safety mats, you will be handed plenty of technical data sheets. You can see different specifications, including dielectric strength, AC proof voltage, thicknesses, and others. What is dielectric strength, and how is it measured?

Measuring Dielectric Strength of Electrical Matting 

Dielectric strength of insulating mats for electrical purposes refers to the maximum electric field they can withstand without having an electrical breakdown.

There are different testing standards for testing the dielectric strength of electrical insulation matting. They are IEC 60205, ASTM D149, EN 60243-1, and others. Here is how to measure it:

1. Bring a Sample

Get a sample of the electrical insulation matting you want to test. Make sure it is clean and ready to be tested. 

2. Set it Right

In this step, you have to place the sample of the electrical matting between two electrodes. This is the test setup for the dielectric strength test of your insulated rubber mats. 

3.  Apply Voltage

Apply voltage across the sample of electrical matting between the conductive electrodes. After this, slowly increase the voltage to take a measurement.

4. Take the Reading:

With the increase in voltage subjected to your electrical safety mats, there will be a point where your sample will have an electrical breakdown. As a result, you can see a spark or arc. Take the reading of the voltage up to which your electrical insulating rubber mat could endure.

5. Do the Math

Dielectric strength is measured by dividing the breakdown voltage by the thickness of the insulation rubber mat., 

6. Point to be noted

Make sure to test several samples of electrical safety mats to report the actual dielectric strength. Besides, make sure to conduct the test in normal temperature and humidity as per the standards. 

To sum up, 

Make sure to follow the standard guidelines for conducting proper testing of insulating matting. Ask for certificates to prove the dielectric strength before purchasing. Inadequate dielectric strength for any working voltage application will suddenly break down your electrical insulating mat. Consult experts for more information!