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IndustryArena Forum > CNC Electronics > CNC Machine Related Electronics > My machine's state power requirements aren't making sense to anyone
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  1. #1
    Join Date
    Feb 2007
    Posts
    167

    My machine's state power requirements aren't making sense to anyone

    Just called TemCo, a company who sells phase converters. They too are confused by what my manual says, please can anyone help?

    My machine takes 1 input of 3Phase power at 230V

    It requires a 20 Amp slow blow fuse at the breaker \
    It says it uses 28kVA / (items in question)

    The spindle is 700W

    I need a phase converter that will sufficiently power my machine. Any help would be greatly appreciated!
    Rockcliff PE/Aluminum Router > 4'x8' CNC Router/Plasma > Manual DRO/CNC X2 > 4 Axis Syil SX3 and an Emco PC Mill 125

  2. #2
    Join Date
    Dec 2003
    Posts
    24221
    The maximum current at 230v 3 phase would be around 104amps for a 28kva supply.
    Are you sure it is not 2.8kva?
    Al.
    CNC, Mechatronics Integration and Custom Machine Design

    “Logic will get you from A to B. Imagination will take you everywhere.”
    Albert E.

  3. #3
    Join Date
    Feb 2007
    Posts
    167
    First time kVA is mentioned in the manual it is 28kVA, next 2 times (found further in the manual) are 2,8 kVA. Ill assume the , is representing a . in this case. If this is true, ill bank on that because the previous breaker it was hooked up to was not 100 amps. Based on this new info what is my current draw?

    Thanks Al for suggesting the 28 vs 2.8 as a possibility!!!
    Rockcliff PE/Aluminum Router > 4'x8' CNC Router/Plasma > Manual DRO/CNC X2 > 4 Axis Syil SX3 and an Emco PC Mill 125

  4. #4
    Join Date
    Dec 2003
    Posts
    24221
    European practice is to use comma for decimal point.
    a 20 amp slo blow fuse should be ample.
    It should draw no more than 10 to 12 amps.
    Al.
    CNC, Mechatronics Integration and Custom Machine Design

    “Logic will get you from A to B. Imagination will take you everywhere.”
    Albert E.

  5. #5
    Join Date
    Feb 2007
    Posts
    167
    I gotta keep reminding myself that everytime I get frustrated and something takes more than a day to figure out, ill learn alot of stuff along the way

    Thanks BIG TIME for the help, I will be ordering the phase converter this eve
    Rockcliff PE/Aluminum Router > 4'x8' CNC Router/Plasma > Manual DRO/CNC X2 > 4 Axis Syil SX3 and an Emco PC Mill 125

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