Posting a message to the forum will remove the above advertisement

Discuss Megger 1552 Problems in the Electrical Tools and Products area at ElectrciansForums.co.uk.

Please make sure you checkout our forum sponsors, many do discounts for members and, they keep the forum free to use.
  1. slacky1230
    Offline

    slacky1230 Regular EF Member

    Hi guys

    Ive got a megger mft 1552 that reads high on no trip setting when performing an earth loop. The noise symbol also appears when testing. This happens 9 out of 10 times when performing this test.

    I took it to a local company for repair and recalibration in april. Got the tester back which was meant to be repaired and recalibrated but foolishly i didn't check to see if all was ok. Came to use it a couple of months later and still the same.

    Has any one had any similar problems and how did they solve it?

    Thanks
     
  2. telectrix
    Offline

    telectrix Scouser and Proud of It Trusted Advisor

    Top Poster Of Month

    Location:
    cheshire/staffordshire
    Business Name:
    Telectrix
    no-trip is a 3 lead test with the 1552. check the leads and also the 4mm sockets on the mft.

    does itdo the same when using the 1363 lead?
     
  3. Vortigern
    Offline

    Vortigern Electrician's Arms

    Location:
    England
    Business Name:
    F.H. Electrical
    Try using the higher current test instead of no trip current. Use this whenever you get noise on the test.
     
  4. telectrix
    Offline

    telectrix Scouser and Proud of It Trusted Advisor

    Top Poster Of Month

    Location:
    cheshire/staffordshire
    Business Name:
    Telectrix
    like this:

    High current Zs test with RCD.jpg
     
  5. slacky1230
    Offline

    slacky1230 Regular EF Member

    I've tried it with the plug in lead and 3 leads both the same. quite frustrating really as other than that the testers bang on everything else works spot on
     
  6. slacky1230
    Offline

    slacky1230 Regular EF Member

    sorry to sound dumb but what do you mean by current test?
     
  7. telectrix
    Offline

    telectrix Scouser and Proud of It Trusted Advisor

    Top Poster Of Month

    Location:
    cheshire/staffordshire
    Business Name:
    Telectrix
    he means hi-current test. as opposed to no trip.
     
    • Agree Agree x 1
  8. slacky1230
    Offline

    slacky1230 Regular EF Member

    wouldn't that trip the rcbo?
     
  9. Vortigern
    Offline

    Vortigern Electrician's Arms

    Location:
    England
    Business Name:
    F.H. Electrical
    See post no. 4
     
  10. Strima
    Offline

    Strima Electrician's Arms

    Location:
    St Neots
    Sounds like a silly question but have you got decent batteries in your Megger?

    I've found anything below 10.5 volts will start to give odd readings.
     
  11. slacky1230
    Offline

    slacky1230 Regular EF Member

    I've just picked up some new batteries that I'm going to swap over to rule this out
     
  12. slacky1230
    Offline

    slacky1230 Regular EF Member

    is the picture just basically showing to bypass the rcbo
     
  13. telectrix
    Offline

    telectrix Scouser and Proud of It Trusted Advisor

    Top Poster Of Month

    Location:
    cheshire/staffordshire
    Business Name:
    Telectrix
    yes and also to bypass the MCB if you want. but don't forget to remove the L-E short before re-energising or you'll have performed another test (unspecified by BS7671), commonly called the Bang Test.
     
    • Funny Funny x 2
  14. anthonybragg
    Offline

    anthonybragg Electrician's Arms

    Location:
    NORTHAMPTON
    Business Name:
    CHARLTEC ELECTRICAL LTD
    That seems how a lot of these so called electricians with their top of the range work ware and battery tools test. Now I've got some certs to write up hate doing it but if something happened etc./ now it's safe.
     
  15. Ian1981
    Offline

    Ian1981 Electrician's Arms

    Location:
    North east
    I've got a megger mft 1552 and even with the batteries on 9 volts it still performs as it should.
    Only ever change batteries when the symbol is displayed.
    As it's a live test the battery power shouldn't matter.
     
    • Agree Agree x 1
  16. Strima
    Offline

    Strima Electrician's Arms

    Location:
    St Neots
    It's worth checking the simple things first.
     
    • Agree Agree x 1
  17. slacky1230
    Offline

    slacky1230 Regular EF Member

    although it's a solution to bypass and test on hi current I'd rather get my meter sorted so it's working correctly.
     
  18. Vortigern
    Offline

    Vortigern Electrician's Arms

    Location:
    England
    Business Name:
    F.H. Electrical
    Yeh but is it working incorrectly. It does happen noise. Is this domestic or commercial. I have not encountered noise in a domestic so far but a couple of times in commercial offices.
     
  19. slacky1230
    Offline

    slacky1230 Regular EF Member

    I know it can happen now and again but it's near enough all the time.

    I've tried it in 3 commercial places with the same result.
     
  20. anthonybragg
    Offline

    anthonybragg Electrician's Arms

    Location:
    NORTHAMPTON
    Business Name:
    CHARLTEC ELECTRICAL LTD
    All I can note I have only had the same experience as Vortigern only a few times at commercial places on my Megger MFT.
     
  21. Strima
    Offline

    Strima Electrician's Arms

    Location:
    St Neots
    I've seen it a lot on Flukes, mainly telecoms sites and working on generators. Megger has always seemed to take noisy earth in its stride.
     
Loading...
Similar Threads - Megger 1552 Problems Forum Date
R1 R2 socket test on Ring Final Circuit with megger leads Electrical Forum Oct 3, 2017
Megger power suite is it worthwhile having? Electrical Tools and Products Oct 2, 2017

Share This Page

  • Electricians Directory Post a Domestic Job Post a Commercial Job