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Electrical Inspection & Testing Forum
insulation resistance testing
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<blockquote data-quote="kung" data-source="post: 58075" data-attributes="member: 3328"><p>Hi All</p><p></p><p>Just a quick question on insulation resistance testing i know how to do it but what i dont get is i know its just an exam question and if you got readings like bs7671 further investigation would take place ie</p><p></p><p>250v-------------&gt;0.5Mohm</p><p></p><p>500v-------------&gt;1Mohm</p><p></p><p>etc</p><p></p><p>just been watching Niceic dvd and he gets &gt;299Mohm @ 500v &amp; &gt;99.9Mohm @ 250v ! ive got a kewtech kt61 and mine wont give symbol &gt; and how come in bs7671 the min is that low ?</p><p></p><p>The guy in the niceic dvd also on 250v test got 0.71Mohms on selv and said its of course a fail ! how come if its above 0.5Mohm ?</p><p></p><p>Regards</p><p></p><p>Kung.</p></blockquote><p></p>
[QUOTE="kung, post: 58075, member: 3328"] Hi All Just a quick question on insulation resistance testing i know how to do it but what i dont get is i know its just an exam question and if you got readings like bs7671 further investigation would take place ie 250v------------->0.5Mohm 500v------------->1Mohm etc just been watching Niceic dvd and he gets >299Mohm @ 500v & >99.9Mohm @ 250v ! ive got a kewtech kt61 and mine wont give symbol > and how come in bs7671 the min is that low ? The guy in the niceic dvd also on 250v test got 0.71Mohms on selv and said its of course a fail ! how come if its above 0.5Mohm ? Regards Kung. [/QUOTE]
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