3 phases 6 wires - MISTAKE
"Bob La Londe" wrote in message
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"Ned Simmons" wrote in message
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On Fri, 6 Jan 2012 19:45:01 -0700, "Bob La Londe"
wrote:
wrote in message
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On Jan 6, 6:59 pm, "Bob La Londe" wrote:
I have a Leland 6273 3 phase 240 V motor I am trying to figure out how
to
hook up.
It has 6 black wires coming out of the motor.
Is there any practical way using a meter to determine which wires to
pair
up
to connect to 3 connections on the VFD?
I would use the ohm meter function first to get a better idea of what
you have. I suspect you have three windings with both ends of each
winding brought out. That would allow you to connect it as either star
or delta.
Dan
Well, a quick check doesn't seem to be the case. Get about 20 ohms
between
any two of three wires and 2 ohms between any 2 of the other three.
A start winding and a run winding? Which one is which?
I would guess the lower impedance (higher load) would be the run winding.
Will putting a start timer relay on the start winding do anything funny
to
the VFD when it disconnects if that's the case?
It sounds like a 2 speed motor -- 2 sets of windings. 96 RPM @ 6 Hz is
a 4 pole winding; 3680 RPM @ 130 Hz is 2 poles.
My mistake. It say 3/130 hz, not 6/130.
The Data Plate Reads:
Leland Electrosystems Inc
Model 6273
Serial TX43042
FR 215
HP 5
HZ 3/130
C Temp rise Cont.
NO.71
RPM 96-3680
Class H insulation
It looks like an inverter-rated motor...
96 dvide by 3=32
32 x 130= 4160 and if you then subtract 10% slip you get 3744 which is right
there in the ballpark....
Not sure what the other three wires are for--feedback perhaps or could be
there for a ventilating fan I suppose.
Which leaves the odd pair--could be a per/rev feedback, hall sensor or
magntic prox or for a fan or perhaps some kind thermal safety...
The odd pair of wires is probably either for a fan or for a thermister
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