Test instruments nowadays are extremely robust pieces of equipment, and I cross check around 90 sets every 3 months. I have yet to find any varying readings more than 0. Unless the strange odd readings are being found on various jobs, then there's nowt wrong with the test instrument. Rant over. Fire away if you wish! Yeah I take your point. But I have had a Robin meter that one day decided to give the same loop readings every time.
Different outlet, different site. Same readings. That was what I was thinking when I read the prob. And last year my 6 month old Metrel went a bit funny and saw everything as an open circuit.
No, it wasnt the leads. Also user error did spring to mind, but Im too shy to mention such things. You might be right Si, I knew the reading was strange at the time hence looking into it, pretty sure i took two of them, Oh well all sorted now. Thanks everyone, cheers Pevvers great explanation. Post reply.
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Replies 5 Views 3K. Oct 26, BenCos Replies 2 Views 4K. Oct 6, telectrix. Replies 4 Views 5K. It would surprise you to find that you will not get the same reading on each phase, but not that much difference.
New here? To participate in discussions, please log in and introduce yourself. Shift Technician. Senior Engineer- Systems Architect. Recruiter: Telent Apply for this job. Project Engineer - Ops Comms. Latest News: Private messages, your photo, profiles, email notifications. Linear : Threading : Single : Branch. Search Topic Keyword. View similar topics. Print this topic. You would want to make sure you have a reliable earth neutral connection. Surely to look for worst case you want to disconnect all 'fortuitous' paths when measuring Zs, but have then connected when measuring any fault current L-N or L-PE.
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Learn more. Both PFC and PSC tests are designed to calculate the maximum current that will flow within a fault loop path during the event of an electrical fault as required by regulation A PSC test calculates the current that will flow in the event of a short circuit fault between the live conductors.
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