The IET code of Practice says (section 15.5) that the 500 V Insulation Resistance test is a "hard test" and that it can "damage IT equipment or other equipment containing electronic components". We look at what this means and whether it makes sense.
Showing posts with label insulation resistance test. Show all posts
Showing posts with label insulation resistance test. Show all posts
Tuesday, 17 March 2020
Sunday, 4 December 2011
Class I and Class II appliances
All electrical appliances using mains voltage have to provide at least 2 levels of protection to the user. This is to ensure that if one of the protection layers were to fail, there is the back-up of the second layer still in place. This makes electrical equipment very safe to use. Appliances can be Class 1 or Class 2. When PAT testing, it is important to first identify the Class of the appliance as Class 1 appliances are tested differently from Class 2 appliances.
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