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Electrical Inspection & Testing Forum
insulation resistance testing
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<blockquote data-quote="sarni31" data-source="post: 58299" data-attributes="member: 2350"><p>if the SELV curcuit is fed from a Low Voltage supply ...ie an isolation transformer then the insulation resistance is done at the highest voltage.</p><p></p><p>Which in this case would be 230v with a result &gt;1M</p><p></p><p>or</p><p></p><p>where protection is provided by SELV or electrical seperation the measured insulation resistance should be at least that required for the highest voltage present .</p><p></p><p>Guiness Drink</p></blockquote><p></p>
[QUOTE="sarni31, post: 58299, member: 2350"] if the SELV curcuit is fed from a Low Voltage supply ...ie an isolation transformer then the insulation resistance is done at the highest voltage. Which in this case would be 230v with a result >1M or where protection is provided by SELV or electrical seperation the measured insulation resistance should be at least that required for the highest voltage present . Guiness Drink [/QUOTE]
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