Page 1 of 2 12 LastLast
Results 1 to 13 of 22
  1. #1
    Join Date
    Aug 2012
    Location
    Currently live In Berks County PA and work in New Jersey
    Posts
    2

    what's the best megometer for a decent price

    I apologise in advance if this question has been asked before, but I was wondering what megometer was thought to be a good buy for a decent price. I need to get one and the one I choose will become the company standard so any help would be appreciated.
    Thanks,
    Bill

  2. #2
    Join Date
    Dec 2011
    Location
    Cincinnati
    Posts
    27
    SUPCO M500 ABOUT $100 WORKS WELL

  3. #3
    Join Date
    Aug 2012
    Location
    Richmond, Virginia
    Posts
    90
    I 2nd that ^^

  4. #4
    Join Date
    Jul 2006
    Location
    NW burbs of Detroit
    Posts
    6,058
    What the heck does 100 bucks get you in a megger?

    When I buy an instrument like a megger I look for certification from a testing authority.

    A bunch of green and red LEDS don't cut it. You aren't just looking for a ground resistance value, you are evaluating the dialectical strength of the winding which is expressed in mega ohms.. Thru RSES training we used an old crank mega ohm meter and the idea was if you got a bad reading it was most likely moisture in the system conducting a path thru micro flaws in the windings.

    A deep vacuum was called for and a new LLFD and another megger test was conducted to evaluate dielectric improvement .


    I had to dig deep in my SAMs just to make sure these facts.



    ( I already knew them to be true but I just wanted to be sure)

    I would only buy a direct reading megger. It lets you know the TRUE state of you windings.

    Supco sold a whole bunch of micron gauges that show only an LED at a certain micron level but no actual digital reading.

    Would you trust one of those to day or would you buy a BluVac? Same logic applies to an instrument as important as a megger.

  5. #5
    Join Date
    May 2010
    Location
    Canada
    Posts
    689
    The fluke 1520 is nice.

  6. #6
    Join Date
    Jul 2005
    Posts
    5,153
    Quote Originally Posted by HVACR2012 View Post
    SUPCO M500 ABOUT $100 WORKS WELL
    The M500 is quite possibly the worst megohmmeter ever made.

  7. #7
    Join Date
    Oct 2010
    Location
    AZ
    Posts
    614
    I agree w/ hvaclover. I don't know how good extech products are but they have a real megger for under 200

  8. #8
    Join Date
    Dec 2004
    Location
    Grand Rapids, MI
    Posts
    587
    For our company that does res. service only, a 'megohm' reading is just an indication of the windings insulation.
    For a GM plant that monitors the motors for an assembly line, I would buy the best one possible.
    luck dan

  9. #9
    Join Date
    Jun 2012
    Location
    East tx
    Posts
    154
    I bought a fluke 1587. It's very handy and have used it several times. Wasn't too terribly bad on price either

  10. #10
    Join Date
    Jul 2006
    Location
    NW burbs of Detroit
    Posts
    6,058
    Quote Originally Posted by danielworkerbee View Post
    For our company that does res. service only, a 'megohm' reading is just an indication of the windings insulation.
    For a GM plant that monitors the motors for an assembly line, I would buy the best one possible.
    luck dan
    a megger was designed for a hermetic comp, not an open motor. but I'm sure a megger is misapplied like a lot of instruments.

  11. #11
    Join Date
    Jun 2002
    Location
    south jersey
    Posts
    1,088
    Very well stated hvaclover. I also have the subco m500 and I agree it is a pos. Looks good in my bag though. It also impresses the young guys with the cool lights until they know better. I agree buy a decent megger.
    You need to put the phone down and get back to work!

  12. #12
    Join Date
    Jul 2009
    Location
    Columbia, MD
    Posts
    3,384
    so.....whats a good megoohmer for a good price?

    how about the extech 380260 or 380320 ?

  13. #13
    Join Date
    Jan 2008
    Location
    In the work truck
    Posts
    2,942
    I own the Extech 380260. IT works but if your trying to track the condition of the windings on a pm basis I would not recommend it. I will read 2000 Megaohms but only on the 1000v scale. Other then that it does work.
    If it were me I would look at those Fluke Meggers. I love my Fluke meters..
    Gotta have the right tool for the job!

    Where is all the stuff MADE IN THE USA?

    "Thats what we do Troy. Incredible, Invisible, Imbelivable things. We are an Unseen, Unknown, Unvincible fraternity of craftsman.."

Page 1 of 2 12 LastLast

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Comfortech Show Promo Image

Related Forums

Plumbing Talks | Contractor Magazine
Forums | Electrical Construction & Maintenance (EC&M) Magazine
Comfortech365 Virtual Event