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From: steve@cs.UAlberta.CA (Steve Sutphen)
Newsgroups: sci.electronics,rec.woodworking
Subject: Electric motor connections
Keywords: standard GE motor
Message-ID: <1990Dec2.220920.14435@cs.UAlberta.CA>
Date: 2 Dec 90 22:09:20 GMT
Sender: news@cs.UAlberta.CA (News Administrator)
Followup-To: poster
Organization: University of Alberta, Edmonton, Alberta, Canada
Lines: 36


Is there a standard for electric motor connections?  I have a 1HP 
syncronous A/C motor (GE 5KC47PG1207EX) that I retrieved from an
old disk drive.  I would like to turn this into the drive motor for 
my table saw, but I do not have any wiring diagrams for it (it does say
that it requires 187-253V at 9.0A).  The problem is that the way it was
hooked up used more than 3 wires (it is a single phase motor so I would
expect 2 current carrying wires and a safety ground).  There are 5 wires
(plus safety ground) comming into the motor.  I traced out where all the
wires went, but that didn't help much as 3 went to the field windings, one
went directly to the motor start capacitors (two in series).  Here is a
schematic of what I have reverse engineered so far.


4-------------------------------------- to field winding `A'

V--------||---||-------->|
                         |
                         |
2_________________H______|------------- to field winding `A'

3-------------------------------------- to field winding `B'

1-------------------------------------- to field winding `B'

The numbers are the Faston terminal numbers, the `V' is a violet wire that
goes to the motor start caps, the `->|' is the contact that opens when 
the motor is up to speed, and the `H' is the thermal protection.  There is
a sticker on the motor indicating that it is wired for CW and low voltage.
What I would like to do is figure out how to wire this up for 220 (or is 
it 208V).  I may need to change the rotation direction too (actually I 
have another motor that runs off of 110V that I would like to change the
direction on if anyone knows how).

Any help would be appreciated.
	steve@cs.ualberta.ca


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