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Re: 220v/50hz power rig
From: David Lesher <wb8foz () nrk com>
Date: Wed, 5 Sep 2001 19:23:24 -0400 (EDT)


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.




-- 
A host is a host from coast to coast.................wb8foz () nrk com
& no one will talk to a host that's close........[v].(301) 56-LINUX
Unless the host (that isn't close).........................pob 1433
is busy, hung or dead....................................20915-1433


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