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Re: 220v/50hz power rig

  • From: David Lesher
  • Date: Wed Sep 05 23:25:41 2001

Unnamed Administration sources reported that Randy Bush said:
> you're gonna love this one.
> i have a piece of equipment i will be shipping to china that i want to test
> before i ship it over.  it has a <gasp!> electric motor!  so i need some
> kind of transformer/inverter setup that plugs into red blooded american
> 115v/60hz and can handle
>     Power requirement:  1.5 kW
>     Voltage requirement:  220 V
>     Frequency:  50/60 Hz
>     Current requirement:  10 A
>     Current protection by user:  16 A (slow blow)
>     Protection type:  IP 54
>     Processor:  C167, 20 MHz
>     Spindle motor power:  AC 380 Watts
>     Brake:  Electro-dynamic & mechanical

If you want to test it on 50 Hz, you have a real issue.  You can
not easily generate that much; there is no easy way to morph 60
into same.

Such will make a real difference in motor speed (duh!) unless
it's really crude (electric drill/hair drier motor w/ brushes)
or exotic (chopper controlled with feedback regulation, etc..)

You might be able to rent/find a 5-10 KW gas generator and slow
it down to make 50; it may or may not still make 220, but that's
a little easier to handle, find a Variac. You want a bigger one
because its efficiency will fall off.

There ARE test sets that generate 50HZ from 60 (actually, 60->DC->50)
but offhand I do not know where you'd find one. Maybe a major exporter
of toys (LockNortGrumMart or such) would have one they use. Or hit
all the equipment rental outfits.

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