measurement

  1. H

    Loop method using Fluke 1653

    Hi all! I tried to measure earth resistance by loop method using fluke 1653 at MR system (TN) in hospital. But got abnormal results. The primary (upper) display showed 0.16 - 0.2 (loop impedance) and secondary - 0.0 - 0.1 (earth resistance) Is there some limitations using this method? Cant find...
  2. P

    megger 1720 ka measurement

    just got a 1720 megger, need to do a ka measurement, i had a megger 1500 that was easy to use
  3. P

    measurement of distribution

    could any one explain how this system works there is 2 three phase meters, from there iv traced the cables to (1) 800a switch how do the meters measure the 2 different loads?????? i have done a quick drawing please see attachment thanks paul
  4. B

    For Sale Megger LTW 425

    http://www.test-mete...dcXmBoChmzw_wcB Same as the above, it's a year old but has only been used 3-4 times tops. I don't think it's in calibration still, but I can arrange to have it calibrated for anyone interested. Key specs below: Will post some photos when I get home later. I think...
  5. Simonslimline

    verification of voltage drop on innitial verification

    When ticking the box for verification of volt drop on an innitial verification whats the procedure for this ? Would you not need loads to be running to get an accurate reading? Thanks simon :)
  6. G

    External earth fault loop impedance Ze

    ​Can any one explains what are the three methods to find External earth fault loop impedance Ze please?
  7. Rockingit

    Laser profiling / measurement

    I've shamelessly put this thread here rather than tools as I want to try to tap as many of the industrial brains as possible! Oh, and it's also not electrical! Been asked for a suggestion by my lil' bro' who does precision calibration of industrial kilns for a UK firm operating globally: They...
  8. Jay Sparks

    E7 Ze & PFC measurement??

    Hi Guys & Gals, So Im fitting two small 1.7kw storage heaters on Monday. There is already two fitting, fed from an old Wylex cu with rewireable fuses. The cable for the excisting heaters are buried. So my first thought was to fit a new 4 way rcd board so I could add the two new ones. Now I know...
  9. L

    Measuring ZE - Am I getting too high a measurement? - what is 'normal range'?

    Hi all, I've just put in a new 32amp ring main in a domestic Crabtree Starbreaker box , I've tested for R1 + R2 at all of the 12 sockets in the ring (a loft conversion) and I'm getting 0.36 as the highest reading. When I test for ZE I'm getting 1.28 which when I add this to R1 + R2 I'm getting...
  10. S

    Fluke 1654B loop measurement - how does it measure the Re bit?

    Hi Guys, I've just swapped over to a Fluke 1654B MFT and I have a question about measuring the Re using the loop test function. Anyway, on the full caffeine loop test there is a little button where you can toggle the lower display to swap between PEFC measurement and the Re element of the Ze...
  11. S

    IR testing not settling on a measurement

    Morning to all the good people out there. When insulation resistance testing using Megger MFT 1710, sometimes the value never get to >999, it will keep rolling over random numbers and never settle which i do for about 15-20 seconds and give up. I may expect to see this on older cable but i've...
    • Sbc
    • Thread
    • cable measurement never reading testing
    • Replies: 12
    • Forum: UK Electrical Forum
  12. O

    Unable to to get a direct measurement reading for shower Zs

    Hi guys, Would be greatful if i could pick a few brains. Scaniro. You get a call re shower not working so pop over.....take pull coard down and can see that the supply netural has overheated and started to melt the PVC! On the pull coard terminal for the netural supply you can clearly...
    • onfire25
    • Thread
    • cable circuit direct get measurement reading shower thoughts unable
    • Replies: 8
    • Forum: UK Electrical Forum
  13. S

    METREL Installation Measurement Manual

    Just found this pdf manual...Looks interesting. http://www.arc.ro/userfiles/docs/ecomm/Measurements%20on%20electric%20Installations%20in%20theory%20and%20practice.pdf
  14. P

    method for measuring the voltage drop

    hi, if we need to measure the voltage drop from a main cu to a sub cu in a outbuilding, what method can be used to verify the voltage drop
  15. P

    earth fault loop three methods?

    when confirming auto disconnect of the supply it is necessary to determine the external earth fault loop impendance of the system. What three methods can this be achieved? So the external earth what loop impendance is the supply companies end is that right?
  16. G

    measurement aborted

    has anyone come across this problem trying to do a ze test on a garage. fed from a 40a mcb in 17th edition board and keep getting test aborted.The tester is a metrel mI3000 any suggestions greatly appreicated ?
  17. rustynails

    Fluke Memory

    Is anyone able to tell me how the memory works on a Fluke tester. Does it store sets of results? Allowing you to work during the day doing 2 seperate jobs, then later in the evening do the paperwork without getting data mixed up.
  18. the pict

    pfc/psc manual calc

    When calculation Zs how do I arrive at the PFC for that circuit, I know the tester works it out but whats the calculation formulae Pict
  19. M

    Any suggestions to improve the features of electrical test & measurement instruments?

    I design and manufacture electrical test and measurment devices. And since many of you have a lot of field experience using these devices, I was wondering if you can give me any suggestions on how some of these devices could be improved (features, design, etc.). I specialize in high voltage...
  20. S

    Require Solar energy measurement instruments

    Require some assistance regarding where i can purchase compact and highly efficient PV array tester

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