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Testing Question
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<blockquote data-quote="pewter" data-source="post: 361281" data-attributes="member: 15463"><p>When i first bought my Megger MFT 1730 a couple years ago, it did a 2 wire low current loop test &amp; high current 2 wire test.</p><p></p><p>The low current test was ment to not trip RCDS, though it did used to make Wylex and something else trip. I contacted Megger and they sent me an email with this,</p><p></p><p>'We have found that there are a few breakers on the market that act</p><p>differently and can occasionally trip whilst testing when using the</p><p>MFT1730. I would suggest reversing your test leads, so your green lead</p><p>is connected to line and the red lead is connected to earth. This should</p><p>then perform the loop test and give you a reading.'</p><p></p><p>So reversing the L &amp; E did work and stopped RCD's tripping.</p><p></p><p>The software got updated on the tester and it now test a lo current non trip test with 3 wires, which does work better.</p></blockquote><p></p>
[QUOTE="pewter, post: 361281, member: 15463"] When i first bought my Megger MFT 1730 a couple years ago, it did a 2 wire low current loop test & high current 2 wire test. The low current test was ment to not trip RCDS, though it did used to make Wylex and something else trip. I contacted Megger and they sent me an email with this, 'We have found that there are a few breakers on the market that act differently and can occasionally trip whilst testing when using the MFT1730. I would suggest reversing your test leads, so your green lead is connected to line and the red lead is connected to earth. This should then perform the loop test and give you a reading.' So reversing the L & E did work and stopped RCD's tripping. The software got updated on the tester and it now test a lo current non trip test with 3 wires, which does work better. [/QUOTE]
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