Matsuura on Low Power Supply
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  1. #1
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    Default Matsuura on Low Power Supply

    Looking at a 1996 Matsuura MC-800VF, VMC

    The only problem is the transformer on the power pole is only 25kVa (single phase) and the machine is rated 37kVa in the book specs and 41kVa, 200-220V, 118A on the metal plate on the back of the machine. The transformer was installed 1.5 years ago with a subsidy, to upgrade would mean full cost which is out of budget.

    The RPC manufactures recommend a 40hp RPC for this machine.

    Is it possible to run a smaller RPC that would work with the 25kVa transformer? Can I just run the machine at a reduced rpm/rapids/feed etc and get away with it? Can the machine/control be damaged if it goes over the available power?

    the reason I'm asking is I put some money down without checking the transformer, assuming it was sized for multiple residences, which it's not. Otherwise I would just go to a smaller machine. But this one is low hours, a good price, and has a large envelope, plus I would lose the money down.

    I'm not cutting Inconel at max rapids/feed. Mostly aluminum low volume prototyping.

  2. #2
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    Quote Originally Posted by Chris Duncan View Post
    Can I just run the machine at a reduced rpm/rapids/feed etc and get away with it? Can the machine/control be damaged if it goes over the available power?
    I did that for a year or so .... don't know about the rpc but in one rental unit I had three phase but it was insufficient to run the machine at full power. The only thing that happened the once or twice I got too carried away was, it tripped the breaker.

    Tripping the breaker is a pain, some sort of ammeter you could watch would be helpful, but nothing got hurt.

  3. #3
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    So this leads to another question. Cart before the horse scenario.

    Working from the other direction, fitting the machine to the existing available power. With a 25kVa transformer and 200 amp residential service, what is the largest maximum RPC that you could run?


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