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Why do Megger MT1700 Teaters Measure IR to 999 Megohms

Discussion in 'Electrical Forum' started by JaegerZero1984, Jun 4, 2018.

Discuss Why do Megger MT1700 Teaters Measure IR to 999 Megohms in the Electrical Forum area at ElectrciansForums.co.uk.

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  1. JaegerZero1984
    Offline

    JaegerZero1984 EF Member

    Location:
    Loindon
    I have got a new Mt1720 Megger tester and it measures to 999 Megohms. the old one my boss loaned out to me and my assesment testers only go up to 299 Megohms. Why do they go so high now?
     
    JaegerZero1984, Jun 4, 2018
    #1
  3. telectrix
    Offline

    telectrix Scouser and Proud of It Respected Member

    Location:
    cheshire/staffordshire
    Business Name:
    Telectrix
    because they can.
    i have a megger IR/continuity tester ( forgot the model no.) that reads on IR in Gig ohms.
     
    • Like Like x 1
    telectrix, Jun 4, 2018
    #2
  4. JaegerZero1984
    Offline

    JaegerZero1984 EF Member

    Location:
    Loindon
    so its not to comply with new regs or anything its just a manufacture quirk.
     
    JaegerZero1984, Jun 4, 2018
    #3
  5. DPG
    Offline

    DPG Respected Member

    Location:
    S Yorkshire
    Just different manufacturers with different ideas. And don't forget, the accuracy at then top end of the scale may not be as good as down at the 'reasonable end'. They could design the machine to read up to 999G if they wanted, but obviously as the range gets higher, it is more and more difficult to design the electronics to do it, and there's no real point in day to day electrical testing.
     
    • Informative Informative x 1
    DPG, Jun 4, 2018
    #4
  7. Moley
    Offline

    Moley Baaaa!!!

    Location:
    Pontypridd, S.Wales
    We use Chauvin Arnoux 5kv units that measures to 10T
     
    • Like Like x 1
    Moley, Jun 4, 2018
    #5
  8. DPG
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    DPG Respected Member

    Location:
    S Yorkshire
    Tommy topper
     
    DPG, Jun 4, 2018
    #6
  9. telectrix
    Offline

    telectrix Scouser and Proud of It Respected Member

    Location:
    cheshire/staffordshire
    Business Name:
    Telectrix
    10 tons.
     
    • Like Like x 1
    telectrix, Jun 4, 2018
    #7
  10. Adam W
    Offline

    Adam W Regular EF Member

    Location:
    Bournemouth
    This seems to have turned into a willy waving contest.
    I used to use a Kewtech KT65 which tests at 250v up to 199MΩ; and at 500v up to 900MΩ, not that I consider it anything to shout about :cool:
     
    • Funny Funny x 3
    Last edited: Jun 4, 2018
    Adam W, Jun 4, 2018
    #8
  11. ruston
    Offline

    ruston Respected Member

    Location:
    Northumberland
    Unless you are hanging on to the probes at the time. o_O
     
    • Funny Funny x 3
    ruston, Jun 4, 2018
    #9
  12. ipf
    Offline

    ipf Forum Mentor

    Location:
    Walmington-on-Sea/Lancashire
    Give him an old wind up...…..he's good at that!;)
     
    • Funny Funny x 1
    ipf, Jun 4, 2018
    #10
  13. Paignton pete
    Offline

    Paignton pete Regular EF Member

    Location:
    Over the rainbow
    The kt64 goes up to 1999 mega ohms at 500v test. But I'm not bragging.

    I normally put greater than 199 meg on cert if it goes over that to save on the extra ink used to write the other 9
     
    • Agree Agree x 1
    • Funny Funny x 1
    Paignton pete, Jun 4, 2018
    #11
  14. elsparko
    Offline

    elsparko Regular EF Member

    Location:
    scotland
    one of my college tutours had a deep yorkshire accent, he also wore a bumbag, had a ponytail, had a constant look like he was surprised

    so obviously in the workshop when words like "megger" "copper" "pliers" "cutters" i would mimic him, got chased around with the tester for a bit but he couldnt catch me , so he got himself a bit of pvc conduit and started hitting me with it.

    **** got serious, i told him he had a few seconds to rethink what he was doing otherwise he would be seeing the inside of an ambulance very shortly.
     
    elsparko, Jun 4, 2018
    #12
  15. Adam W
    Offline

    Adam W Regular EF Member

    Location:
    Bournemouth
    199MΩ is plenty; >199MΩ is perfectly adequate. Anything more is just showing off.
     
    • Like Like x 1
    Adam W, Jun 4, 2018
    #13
  16. ipf
    Offline

    ipf Forum Mentor

    Location:
    Walmington-on-Sea/Lancashire
    >1000...…:p
     
    ipf, Jun 4, 2018
    #14
  17. Moley
    Offline

    Moley Baaaa!!!

    Location:
    Pontypridd, S.Wales
    No one would notice if I waved that about :oops:
     
    • Funny Funny x 2
    Moley, Jun 4, 2018
    #15
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