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OT Motor Salvage 3 Phase 6 Wire

B

Bob La Londe

Jan 1, 1970
0
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.

It also has 2 much smaller brown wires coming out that were just tied out of
the way to the lifting ring. I suspect those were for a tach or possible a
heat sensor.

It just has paper labels on the black wires, and they look like they were
put on by somebody who tried to figure out the motor in the past. They do
not match up with any of the three phase wiring numbers/ letters standards
I've been able to find. I want to hook it to a VFD for testing. Since the
data plate says it will operate from 6-130 HZ and lists a range of RPM from
96 to 3680 that tells me was probably intended to operate off of VFD in the
first place.

Is there any practical way using a meter to determine which wires to pair up
to connect to 3 connections on the VFD?
 
B

Bob La Londe

Jan 1, 1970
0
nick markowitz said:
You have a 3 phase Delta wound motor typically see it on foreign
equipment most USA motors are Y wound and have 9 leads depending how
you wire it it works on 230 or 480 vac etc. leads should be T1 thru
T6 yes you can ring out the coils I had some paper work that gave
instruction will see if i can find it for you
the 2 wires coming out back might be for stepper control or a overload
or remote switch application can you send me picture.

This motor was probably manufactured in the lat 1970s or early 1980s.
Leland seems to have been based out of Ohio, I called the last known number
I could find for them and got GE Aviation.

Just for the heck of it I check the impedance between the main 6 leads. I
get about 20 ohms between any two of three wires and 2 ohms between any 2 of
the other three.
 
B

Bob La Londe

Jan 1, 1970
0
Bob La Londe said:
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.

It also has 2 much smaller brown wires coming out that were just tied out
of
the way to the lifting ring. I suspect those were for a tach or possible
a
heat sensor.

It just has paper labels on the black wires, and they look like they were
put on by somebody who tried to figure out the motor in the past. They do
not match up with any of the three phase wiring numbers/ letters standards
I've been able to find. I want to hook it to a VFD for testing. Since
the
data plate says it will operate from 6-130 HZ and lists a range of RPM
from
96 to 3680 that tells me was probably intended to operate off of VFD in
the
first place.

Is there any practical way using a meter to determine which wires to pair
up
to connect to 3 connections on the VFD?



http://img843.imageshack.us/img843/6417/leland.jpg





Yeah, I know I have a couple broken blades on the cooling fan. There was a
dent in the top motor cover. I have already done the CAD and layout to cut
a new fan if I have to on the smaller machine. Probably cut a hub, cut
blades separately, and then weld them into slots on the hub.
 
B

Bob La Londe

Jan 1, 1970
0
Bob La Londe said:
This motor was probably manufactured in the lat 1970s or early 1980s.
Leland seems to have been based out of Ohio, I called the last known
number I could find for them and got GE Aviation.

Just for the heck of it I check the impedance between the main 6 leads. I
get about 20 ohms between any two of three wires and 2 ohms between any 2
of the other three.

Somebody in another group said they thought it sounded like a 2 speed motor.
The said 96 RPM at 6 hz (lowest speed and frequency on the data plate) sound
like a 4 pole winding and 3680 at 130 sounded like 2 pole. Wadda you think?
 
B

Bob La Londe

Jan 1, 1970
0
Bob La Londe said:
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.

It also has 2 much smaller brown wires coming out that were just tied out
of
the way to the lifting ring. I suspect those were for a tach or possible
a
heat sensor.

It just has paper labels on the black wires, and they look like they were
put on by somebody who tried to figure out the motor in the past. They do
not match up with any of the three phase wiring numbers/ letters standards
I've been able to find. I want to hook it to a VFD for testing. Since
the
data plate says it will operate from 6-130 HZ and lists a range of RPM
from
96 to 3680 that tells me was probably intended to operate off of VFD in
the
first place.

Is there any practical way using a meter to determine which wires to pair
up
to connect to 3 connections on the VFD?

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

I'm beginning to think this may likely be a synchronous motor with a start
and a run winding. The low frequency and low RPM throws me though.
 
B

Bob La Londe

Jan 1, 1970
0
Frank Kurz said:
You remind me of my Dad. He was a pack rat too. :)

I do go through and throw shit away periodically. This particular motor
will be used on a Hurco CNC mill if its good and I can figure it out. (The
motor not the mill) I already manufacture some parts on smaller CNC mills.
Mills that I have gotten way more work out of than they were ever intended
to produce. One of the first things this mill will get used for is to make
parts for some intermediate size specialty machines. Well... if I ever get
it retrofit to a modern control system, working and tested. Actually, the
first thing it will probably get used for is to make servo motor mounts for
my lathe to convert it to CNC. It would sure be nice to be able to turn
threads in hard material without standing over the lathe constantly.

None of this has to do with alarms, but I figured somebody here was a motor
wizard.
 
B

Bob La Londe

Jan 1, 1970
0
Bob La Londe said:
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.

It also has 2 much smaller brown wires coming out that were just tied out
of
the way to the lifting ring. I suspect those were for a tach or possible
a
heat sensor.

It just has paper labels on the black wires, and they look like they were
put on by somebody who tried to figure out the motor in the past. They do
not match up with any of the three phase wiring numbers/ letters standards
I've been able to find. I want to hook it to a VFD for testing. Since
the
data plate says it will operate from 6-130 HZ and lists a range of RPM
from
96 to 3680 that tells me was probably intended to operate off of VFD in
the
first place.

Is there any practical way using a meter to determine which wires to pair
up
to connect to 3 connections on the VFD?


Ok... I got it figured out. Mostly... Its got an independent fan motor.
Doh! Had I been a bit more observant I would have seen that myself, but
somebody in another group pointed out the possibility, and commented on the
probability because a motor turning only 96 RPM at 3 Hz can't possibly be
turning a fan fast enough to cool itself.

It was easy enough to check. I spun the fan and held the brake disc on the
motor with my other hand. Wheeeeeeee!!!

It has six primary leads because there are two motors.

I suspect the 2 smallish brown wires are a thermal sensor. Not sure I can
test it except maybe... to wire up the motor and not the fan motor. LOL.


Life just got easier... if the motor works now.
 
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