Miller Electric

Welding Discussion Forums

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

Page 1 of 2 12 LastLast
Results 1 to 10 of 11
  1. #1
    Join Date
    Mar 2004
    Location
    British colombia
    Posts
    136

    Question High Freq. interference.

    So yesterday I managed to get an awsome deal on a syn. 180. The machine sells for about $2700 in canada and I got for $1975!( I think thats what it's worth down there!) I will be able to pick up in a week from now so I have not completed the paperwork on it. So my question is this. How much will the high freq. interfere with electronics and so on or should I be worried at all. Any would be great thanks!

  2. #2
    Join Date
    Sep 2005
    Location
    Evansville, IN
    Posts
    2,348

    Default

    Canuck:
    In school working in a booth next to a guy using Hi frequency my walkman radio was static only, but my mini disc player worked. Fire it up and look around to see what it fools with. I would only worry if you had a pacemaker in your chest. Congrats on the new machine let us know how its going OK!

  3. #3
    Join Date
    Feb 2006
    Posts
    3,711

    Default

    Canuck,

    Hi freq is a potential problem period. Grounding your Syncro frame to an earth ground is your best bet. I have an 8' galvanized electrician's ground rod driven into the earth near my shop. I use it to ground the machine frame for all continuous HF producing circuits. I don't frame ground my Dynasty because it uses HF to start, but is not continuous due to the advanced square wave arc design. Better safe than sorry.

    It is a rare occurence, but injury and even death have resulted from improper installation of high frequency equipment!

  4. #4
    Join Date
    Nov 2003
    Posts
    3,261

    Default HiFreq

    Canuck
    there is a pretty good diagram in the manual for grounding and shielding to minimize interference and extranious radiation from HF.. if you follow those guidelines... you should be fine.. that being said... if you do experience problems after compliance with the guidelines.. there are some inexpensive techniques to further attenuate radiation... let us know how it goes... and we will go from there...
    Hope this helps
    Heiti
    .

    *******************************************
    The more you know, The better you know, How little you know......

    “The bitterness of poor quality remains long after the sweetness of low price is forgotten”

    Buy the best tools you can afford.. Learn to use them to the best of your ability.. and take care of them...

    My Blue Stuff:
    Dynasty 350DX Tigrunner
    Dynasty 200DX
    Millermatic 350P w/25ft Alumapro & 30A
    Millermatic 200

    TONS of Non-Blue Equip, plus CNC Mill, Lathes & a Plasmacam..

  5. #5
    Join Date
    Mar 2004
    Location
    British colombia
    Posts
    136

    Talking

    Thanks for all the help! I don't now how I can wait another week to get my welding machine! I think I have a two page list of all the projects I can do now it really is a dream come true!

  6. #6
    Join Date
    Sep 2004
    Location
    SoCal
    Posts
    18

    Default

    I too have a Synchrowave 180 SD. I am in the process of getting power to my garage so I can run it.

    I have some questions about the High Frequeny Interference.

    1. The warnings say not to use it within 50' of a powerline. What kind of problems would I have as the power lines are above my garage (about 30' away)?

    2. I am running a ground rod for my sub-panel. Would it be OK to ground the frame of the unit to that or would I need a seperate one?

    3. Does everything made of metal in the area need to have a ground?

    Thanks...Ryph

  7. #7
    Join Date
    Jul 2003
    Location
    TX
    Posts
    77

    Default

    The only problem I've had with HF on my 180 is that it used to trip the GFCI that my radio was plugged into, so whenever I welded, I lost my tunes. I swapped the GFCI with a better one and that problem stopped. I haven't noticed anything else, though. I did ask my wife if she noticed anything and she said that she did not. I think the manual is just a CYA for the mfg.

  8. #8
    Join Date
    Feb 2007
    Location
    now in Orlando!!!!
    Posts
    559

    Default

    We have lots of computers here and the neighbor is a HAM radio dude, everyone says they cannot tell that I am welding, even though the computer is directly above the shop in a wood frame building...now the noise at 300 amps and pulsing with AC is something else, kinda like a .22 cal machine gun.....Paul

  9. #9

    Default Hf Info

    Most of the time, HF is not a problem but in some cases where old wire and poor grounding occur, HF is left to wander around to interfere with anything electronic. We have HF bypass capacitors in the unit to shield the internal electronics but as HF radiates to the torch, the problem is greater. The Sync 180 does have true HF and it does stay on all the time when doing AC aluminum. Only in steel does it turn off after starting. This is not the case for the inverters which have a modified HF and is only used for starting in both DC and AC.
    Grounding the case of the unit to a ground rod is a great way to dispose of unwanted HF. You can also ground the work bench too. The reason we say 50ft is because if there is a bad grounding situation, the HF can be imposed on and transmitted along the power line to cause issues elsewhere. If you have any quality grounding within your shop or present wiring, you should be fine.

    Good luck.

    Andy

  10. #10
    Join Date
    Sep 2004
    Location
    SoCal
    Posts
    18

    Default

    Thanks for all of the info!

    Ryph

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: 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.