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  1. Hi Zach! Yeah, so this is a 230/460 WYE input....

    Hi Zach!

    Yeah, so this is a 230/460 WYE input. When you rewire it, you'll be setting the transformer windings to series, configuring them for 277 from centerpoint to lines, which once broken out...
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    On your diagram, you illustrate the control...

    On your diagram, you illustrate the control contactor being operated by a switch.

    Proper way is to use a start and stop button, with the start button pulling in the contactor, an auxiliary contact...
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    I second JST's suggestion. Get a SMALL...

    I second JST's suggestion. Get a SMALL 480:240/120 transformer to leave on all the time, use it for your basic 120 loads AND...

    A detection/control circuit for your big transformers. When your...
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    If you're spending $100 on a diode, you're...

    If you're spending $100 on a diode, you're looking in the wrong place. There's no newer machines, especially inverters, that will survive the duty cycle, AND withstand transients, dirt, and...
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    I would have connected the tank to my welder,...

    I would have connected the tank to my welder, opened the valve, and allowed the argon to gently flow into my shop, over an electrified wire, until that Argon was totally converted to All-Gone...
    ...
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    Okay, well... tracking... the problem you're...

    Okay, well... tracking... the problem you're really going to be festered with, is mechanical... particularly, backlash, which on a mechanism exposed to any thermal change, will be inescapable.

    The...
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    Yeah, probably configured for 480, but only...

    Yeah, probably configured for 480, but only driven by two legs, so single phase.

    Remember- it's an AC-capable TIG supply, and the easiest way to get that, from a transformer-based machine, is...
  8. Thread: Crane drop

    by DaveKamp
    Replies
    30
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    2,108

    That one was caused by the crane being used to...

    That one was caused by the crane being used to pull/drag, rather than lift.

    note that the house disengaged from it's pivot and rolled sideways... and the block, at the time of that failure, was...
  9. Thread: Crane drop

    by DaveKamp
    Replies
    30
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    2,108

    100% rigging error

    This is a classic case of: "Doesn't matter what actually caused the ship to sink, it is always the captain's fault"

    In this case, it's the rigger and operator.

    First and foremost, it was being...
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    So if I understand this right... You already...

    So if I understand this right...
    You already have a motor control system for this machine, you just need accurate feedback for positioning control. That means you're measuring.

    With any kind of...
  11. That's somewhere along the lines I was thinking,...

    That's somewhere along the lines I was thinking, Doug... thank you!

    Anyone else have any direct experience on them?
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    Go easy on him... Australia is in a different...

    Go easy on him... Australia is in a different time zone...
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    Sounds like you've figured it out the right way. ...

    Sounds like you've figured it out the right way. Fortunately, you won't have to worry about high currents, overloads, and such... the "M" head is certainly not a steel-working monster. When I got...
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    It won't take long for the 'cheap route' to...

    It won't take long for the 'cheap route' to become 'very expensive'...

    A better investment, is to find a used industrial-grade unit, and give it a thorough cleaning, inspection, and put it back...
  15. :-D I haven't used one of these, but I HAVE used...

    :-D I haven't used one of these, but I HAVE used smaller ones... the portable-type tongs fitted to a stomp-pedal base. That one was substantially lighter-duty, so my bet is that this bugger has...
  16. Liquid-Cooled spot welder (She Thinks my Stryko's Sexy) B-16-10

    Hey all-

    So some time ago... pert'near a decade... a well-exercised Stryko B-16-10 spot welder was vested upon me.

    Data plate says:
    Model B-16-10 Style F, no 15124
    220v single phase 43A,...
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    What you see in the picture is the Magnetic...

    What you see in the picture is the Magnetic Amplifier coil. According to the schematic I saw, the SP-200 brings in single phase to the primary of the power transformer, one leg goes to a pair of...
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    So... capacitors, diodes, and welders are a...

    So... capacitors, diodes, and welders are a chicken-and-egg type situation.

    Diodes rectify, capacitors absorb and store... but the inductors (the transformer) are doing a job trading voltage for...
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    AMB is AMBIENT. Frequently, this type of motor's...

    AMB is AMBIENT. Frequently, this type of motor's service places it in the airflow path of an HVAC furnace, or air handler... and as such, a certain amount of cooling occurs from that airflow. The...
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    Back-to-back (and belly-to-belly!) on DC...

    Back-to-back (and belly-to-belly!) on DC electrolytics is most commonly found it small-signal circumstances, where the POWER is low... it's simply being used to decouple stages in a signal chain. ...
  21. Best way to deal with this issue, Phil... is to...

    Best way to deal with this issue, Phil... is to just put the VFD on it, set it up, and use it. You could run the motor in constant speed, or you could leave the clutch engaged and let the VFD do all...
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    This is a very common HVAC PSC type motor... used...

    This is a very common HVAC PSC type motor... used on furnace blowers and outdoor condenser unit fans. The run capacitor will be at least 5 microfarads, probably no higher than 30... and the amount...
  23. The problem, G... is that no matter WHO you ask,...

    The problem, G... is that no matter WHO you ask, or WHAT they've got, or WHAT they're powering, the answer is basically irrelevant, simply because the rotary converter is not an 'exact' device... it...
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    I'm gonna second Ignator's suggestion, Graham......

    I'm gonna second Ignator's suggestion, Graham... if you're gonna VFD, just go straight to VFD on each machine. Keep your RPC in operation, but VFD the machines in stages... start with the machine...
  25. Yep, a Dumore 'sensitive' drill... and I've seen...

    Yep, a Dumore 'sensitive' drill... and I've seen a few, but the ONLY place I've ever seen one used, had a carefully sanded pine block mounted on the table, with velvet glued to it, and an...
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