Results 1 to 6 of 6

Thread: 200V cooling fan on 120V

  1. #1
    Registered
    Join Date
    May 2011
    Location
    us
    Posts
    113
    Downloads
    0
    Uploads
    0

    200V cooling fan on 120V

    Okay guys I have a fan which is rated at 200V, but it is running on 120V. Here are the specs

    4715MS-20T-B50 - AC Axial Fans - NMB Technologies Corporation

    Now I need to buy a replacement. But which do I get a 115V or the 230V version on this page?

    McMaster-Carr

    It is the 119mm 106cfm one. My question is, is there any issue with running a fan rated at 200V on 115V, or running a 230V fan on 115V? I thought that would bog down the fan and cause it to run slow and hot and have a short life?


  2. #2
    Registered
    Join Date
    Feb 2009
    Location
    usa
    Posts
    4,019
    Downloads
    0
    Uploads
    0
    Maybe that's why your changing it. Get the proper one, when those fans fail they turn in to little heaters.


  3. #3
    Registered
    Join Date
    May 2011
    Location
    us
    Posts
    113
    Downloads
    0
    Uploads
    0
    Quote Originally Posted by underthetire View Post
    Maybe that's why your changing it. Get the proper one, when those fans fail they turn in to little heaters.
    Thats why I am asking to figure out which is the right one?


  4. #4
    Community Moderator Al_The_Man's Avatar
    Join Date
    Dec 2003
    Location
    Canada
    Posts
    18,961
    Downloads
    0
    Uploads
    0
    If it is running on 120v get a 120v version.
    Al.
    CNC, Mechatronics Integration and Custom Machine Design (Skype Avail).

    “Logic will get you from A to B. Imagination will take you everywhere.”
    Albert E.


  • #5
    Registered
    Join Date
    May 2011
    Location
    us
    Posts
    113
    Downloads
    0
    Uploads
    0
    Quote Originally Posted by Al_The_Man View Post
    If it is running on 120v get a 120v version.
    Al.
    Well actually I read the voltage wrong. I had the meter on 200V but becuase it was slightly higher than 200V I wasnt getting anything.DUH!.

    But for some reason when I put the positive lead on one of the fan terminals and the meters negative to the earth ground bonding terminal of the machine I got 120V.

    Now the Fan says its 200V single phase but why was I getting 120V reading? Is it because I am testing one of the 2 120V wires that add to 200V? I know the machines main supply comes in 3 phase.


    ALSO MORE IMPORTANT THAN MY ABOVE RAMBLING. I now know that the fans supply voltage is 200V. So is this fan rated at 230V okay?


    McMaster-Carr


  • #6
    Community Moderator Al_The_Man's Avatar
    Join Date
    Dec 2003
    Location
    Canada
    Posts
    18,961
    Downloads
    0
    Uploads
    0
    Yes then use the 230v model, it sounds like either the fan is fed off of 240v supply with a centre tap ground transformer the same as the domestic supply, or it is fed off of 2 phases (1ph) of a 3ph transformer that has a grounded star connection, but I would guess the former.
    Al.
    CNC, Mechatronics Integration and Custom Machine Design (Skype Avail).

    “Logic will get you from A to B. Imagination will take you everywhere.”
    Albert E.


  • Similar Threads

    1. DIY lab power supply +/- 200V 2A
      By LZ1TWB in forum General Electronics Discussion
      Replies: 5
      Last Post: 01-02-2012, 11:43 PM
    2. 200v Three phase motor 4 poles
      By Dmed in forum Maintenance DIY Discussion
      Replies: 9
      Last Post: 04-11-2011, 08:03 PM
    3. Fuji frenic 200v drive change
      By cevyil in forum General CNC (Mill and Lathe) Control Software (NC)
      Replies: 0
      Last Post: 01-19-2010, 10:38 AM
    4. To Generate 12 V from 100-200V Supply
      By tahoka in forum General Electronics Discussion
      Replies: 3
      Last Post: 07-14-2008, 11:46 AM
    5. Any controllers that can handle 140-200V servo motors out there?
      By mbwittig in forum General CNC (Mill and Lathe) Control Software (NC)
      Replies: 2
      Last Post: 11-28-2006, 02:14 PM

    Posting Permissions


     


    About CNCzone.com

      We are the largest and most active discussion forum from DIY CNC Machines to the Cad/Cam software to run them. The site is 100% free to join and use, so join today!

    Follow us on

    Facebook Dribbble RSS Feed


    Search Engine Friendly URLs by vBSEO ©2011, Crawlability, Inc.