Dielectric Withstand Test
Hi! I'm John Allen, president and CEO of Product Safety Consulting. We help manufacturers obtain product certifications around the world and have been doing so for over 35 years now. We have a series of videos showing a lot of the basic testing that we do in the lab. Today we're going to show you how to do the dielectric withstand test.
The test is a test of the insulation system of the product. We want to make sure no wires are nicked that are touching accessible metal parts. We want to make sure spacing between live parts is adequate, and that is why we do this test.
Most standards require the test be done at two times rated input voltage plus 1000 volts. Today's purposes, we are going to call our input voltage 120 volts. So our test voltage is going to be 1240 volts.
We need to be careful. That's why we have glasses. And we also want to make sure that the test surface is free of debris. So before we start, we're going to make sure that our machine is actually working. And we're going to short it out on purpose to see if we get a failure. And we do have a failure. So we're good to go.
We at Product Safety use the Vitrek V74. There's a variety of models out there. This is a workhorse for us. We love it. So the insulation system test dielectric test as indicated. We're going to tie, line and neutral together. We're going to put the hot lead of the machine on that node and then we're going to take the return lead and put it on ground.
And I am not going to hold this. Remember, it's 1200 volts. The test is actually 60 seconds and off it goes. We do have the benefit in filming to cut that time down so we don't have to see all 60 seconds. Okay, we have a pass. That's fantastic. So our street light passed.
Manufacturer is very happy about that. We have no risk of shock from an insulation standpoint. So this product is hardwired and has a ground wire. What I want to show you with the table lamp is we have an ungrounded plug, so we still have to tie, line and neutral together.
We're going to do it with these banana clips. We're going to take our hot lead of the machine and put it on one. They're tied together, so it's actually both. And then we're going to take our return lead and I'm going to put that down again, it's 1200 volts. We're going to put our return lead on accessible dead metal and we make sure we're clean and good to go. And we will start the test. And there we go again.
Again, I would like to take this opportunity while the test is running to thank you for visiting our KZitem channel. And hopefully you can look at all the other videos and learn a lot of the basic testing we do in product safety. There we go. And we have another pass. We have two very happy manufacturers that passed the dielectric test and reduced the risk of shock to their users, us. And we will disconnect everything, turn power off to make sure everything is safe.
Thank you very much for seeing our video and look to our KZitem channel for more series of videos to help teach you how to do the basic testing and product safety.
Since 1988, Product Safety Consulting has been providing product developers and manufacturers with expert advice and testing services, so they confidently secure product safety and regulatory compliance in the least time, and for the least expense. From consumer products to lighting fixtures, to motor controllers and medical devices, we have helped customers in over 35 countries obtain certifications for more than 3,000 products. We provide Product Safety Consulting and UL Testing for all types of products.
CONTACT US:
877-804-3066
www.productsafetyinc.com
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