Miller Electric

Welding Discussion Forums

Home » Resources » Communities » Welding Discussion Forums
 
Miller Welding Discussion Forums - Powered by vBulletin

Results 1 to 5 of 5
  1. #1
    Join Date
    Feb 2007
    Location
    asheville n.c.
    Posts
    618

    Default question on tb302

    Ive got a tb 302. Generally weld fc with a suitcase. My ? Is lets say i set the dial at 25 volts. Machine says ive got 100% duty cycle. However when im actually welding it may be about 19 volts. Where or what does duty cycle cover, the dial setting or actual weld voltage?

  2. #2
    Join Date
    Dec 2008
    Location
    west edge of the RRV
    Posts
    69

    Default

    100% duty cycle means you can sit there with the trigger pulled and not worry about letting the magic smoke out of your generator. Has nothing to do with voltage.

  3. #3
    Join Date
    Feb 2007
    Location
    asheville n.c.
    Posts
    618

    Default

    I know what your saying...but what im driving at is ...lets say i turn the machine up to where the digital read out is 30 volts. I know at 30 volts i do not have 100% duty cycle for welding. When in an actual weld, the display will read approx 5 volts less than what i set the dial on. So is the duty cycle what i set the machine on or what the display reads during a weld

  4. #4
    Join Date
    Feb 2010
    Location
    YOUNGSTOWN, OHIO
    Posts
    172

    Default

    I would say that the duty cycle covers what the meter reads while welding.
    You set the meter at 30 volts, but because of variances in things like contact tip to work distance, it will not stay on 30 while welding it will fluctuate. Unless you are using a voltage sensing feeder. Anyhow, I would go with what you set the meter on so that you dont exceed the duty cycle. JMO
    JIM

    Owner Operator of JNT Mobile Welding & Repair LLC
    Millermatic 350P Aluma Pro
    Dynasty 200DX
    Maxstar 150 STL
    Trailblazer 302
    Suitecase 12RC
    Extreme 12VS
    Extreme 8VS
    Spoolmatic 30A
    Miller HF251D-1
    Passport Plus
    Spoolmate 100
    Hypertherm Powermax 45 and 85
    Ingersoll Rand Engine Driven Compressor
    Dake 75 ton H-Frame Press
    JD Squared Model 32 Bender
    Miller Digital Elite

  5. #5
    Join Date
    May 2010
    Location
    Central CA
    Posts
    781

    Default 100%

    Your duty cycle is 100% cv/dc. In cc/dc the duty cycle is 100% at 280amps.
    Your volt meter setting is not connected to your duty cycle by a mechanical means.
    The duty cycle is a recommendation that should not be exceeded.
    60% duty cycle equals 6 minutes of welding in a 10 minute period.
    Weld more than the 6 minutes and you'll heat your machine up.
    Get it hot enough and you get smoke?
    That said my friend Gary used to weld all day on scrapers with a Lincoln tombstone, with 5/32 rod/electrode, and it's still going.
    Good Luck,
    Bob
    Millermatic 252 w/30A
    Big Blue Air Pak
    Ellis 3000 Band Saw
    Trailblazer 302 Air Pak w/ Wireless Remote
    8-RC
    Dynasty 200 DX
    XMT 350 MPa w/S-74 MPa Plus
    Millermatic 211
    Passport Plus
    Spectrum 625 X-TREME
    Lincoln SA-200 Blue Tint Red Face '63
    2-Lincoln SA-200 Red Face '68
    SA-200 Black Face '59
    SA-200 Green Lite '84
    SA-200 Green Lite '80
    SA-200 Red Face '69
    SA-200 Red Face '66
    SA-200 Green Lite '81
    '70 Black Face Round Barrel

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  

Warning: Non-static method PhpQuickProfiler::getMicroTime() should not be called statically in /mnt/stor3-wc1-dfw1/357822/357839/www.millerwelds.com/web/content/lib/pqp/classes/Console.php on line 77

Warning: Non-static method PhpQuickProfiler::getMicroTime() should not be called statically in /mnt/stor3-wc1-dfw1/357822/357839/www.millerwelds.com/web/content/lib/pqp/classes/Console.php on line 77

Warning: Non-static method PhpQuickProfiler::getMicroTime() should not be called statically in /mnt/stor3-wc1-dfw1/357822/357839/www.millerwelds.com/web/content/lib/pqp/classes/Console.php on line 77

Warning: Non-static method PhpQuickProfiler::getMicroTime() should not be called statically in /mnt/stor3-wc1-dfw1/357822/357839/www.millerwelds.com/web/content/lib/pqp/classes/Console.php on line 77

Warning: Non-static method PhpQuickProfiler::getMicroTime() should not be called statically in /mnt/stor3-wc1-dfw1/357822/357839/www.millerwelds.com/web/content/lib/pqp/classes/Console.php on line 77

Warning: Non-static method PhpQuickProfiler::getMicroTime() should not be called statically in /mnt/stor3-wc1-dfw1/357822/357839/www.millerwelds.com/web/content/lib/pqp/classes/Console.php on line 77

Warning: Non-static method PhpQuickProfiler::getMicroTime() should not be called statically in /mnt/stor3-wc1-dfw1/357822/357839/www.millerwelds.com/web/content/lib/pqp/classes/Console.php on line 77

Warning: Function split() is deprecated in /mnt/stor3-wc1-dfw1/357822/357839/www.millerwelds.com/web/content/lib/footer.inc.php on line 82

Welding Projects

Special Offers: See the latest Miller deals and promotions.