Page 2 of 2 FirstFirst 12
Results 14 to 18 of 18

Thread: VFD's 101?

  1. #14
    Join Date
    Sep 2004
    Location
    Kansas City, Kansas, United States
    Posts
    13,832
    VFD were used in the 1930s
    of course werner von siemens!

    around here there oldest drives I have ever seen are Graham drives from the late 70's early 80's.

    i have one graham drive only 25 hp
    it is 6x6x2!!!
    lol


    Quote Originally Posted by ncboston View Post
    VFD's have been around for quite a while. At least 15 that I know of. I believe the ECM motors are fairly new.
    I WILL SELL WORK,GENERATE BUSINESS, GO GET NEW CUSTOMERS!
    YOU SHUT THE HELL UP AND QUIT RUNNING YOUR MOUTH!

  2. #15
    Join Date
    Mar 2007
    Posts
    3,108
    Quote Originally Posted by alcomech View Post
    Hey Tech Rob, thanks for the info. That's some good reading material which you sent.
    Any time.
    "There is no greater inequality than the equal treatment of unequals."

    -Thomas Jefferson

  3. #16
    Join Date
    Mar 2008
    Location
    NC
    Posts
    1,460
    Quote Originally Posted by Tech Rob View Post
    Any time.
    X2 .Good material. Thanks rob.

  4. #17
    Join Date
    Feb 2012
    Location
    GTA, ON
    Posts
    1,244
    Quote Originally Posted by alcomech View Post
    Hey Tech Rob, thanks for the info. That's some good reading material which you sent.
    Definitely, thanks Rob! Also a thank you goes out to everyone participating here. Today's my reading day Also that primer posted by alcomech was pretty useful as it gave me a better idea on the entire ICI space heating/cooling systems that I've only seen in bits and pieces (lots of filters and belts, washing coils, compressors, running a few sections of tin and a few electrical gremlins). Never had a good overview of entire systems, even after reading a couple of texts that were supposed to give me that.

  5. #18
    Join Date
    Mar 2007
    Posts
    3,108
    You're welcome.
    "There is no greater inequality than the equal treatment of unequals."

    -Thomas Jefferson

Page 2 of 2 FirstFirst 12

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