Thread: Shapers

Well I'll second the motion, if that helps....

With only 3 in the country that we know of, it would be nice to see another one running.

, is yours another HM45, like mine and Rascals? You can see pics of them.... Oops, my pics have disappeared
but Rascal's are here: https://www.woodworkforums.com/showth...54#post1495954.

PS: Don't worry, I found your photos (yes it's the same) : https://www.woodworkforums.com/showth...32#post1647532
Insomnia can be useful.

Trying to work out the best way to power the shaper. Thought of getting 3 phase connected, but that may be too pricey. Cam (my son) says maybe a VFD. Is this possible with this motor?
Now to try to attach a photo033.jpg035.jpgThat seemed to work
I'm not sure if the wiring has been altered in any way. I'm leaving the job to Cam as he is more clued up than me.

G'day ,
From the spec plate I would say not as it only specifies 415v.
It's a bit hard to tell but it looks like each of the six terminals has a wire coming up from the stator (motor windings), if this is the case then you are doubly screwed as your motor is most likely 415v delta wired so using it at 240v with a VFD will be out of the question for running anything more than a small ornamental garden fountain.
Cheers,
Greg.

Hi ,

While I can't see if your motor is star or delta, One would assume it's 415V and star wired. Most of these motors are pretty easy to convert from star to delta, however the motors that have all 6 internal connections inside the J box are the easiest since it just requires re-configering those wires to a delta configuration. You motor does not seem to have all 6 wires and so you (or someone else) would need to open the motor up and look at the windings to find the "star" connection. Those 3 wires that form the star need to be brought out and re-connected correctly with the existing wires to produce a delta configuration. 20140319_144240.jpg

Cheers,

Simon

Hi Simon.

Its a 3kW motor. As Greg says it could well be a star start/delta run motor.

I'm told the "change over" happens around the 3hp mark "normally".. of course any motor could be wired anyway.

Stuart

Hi Stuart. I missed the star/delta comment. What mechanism causes the changeover from star to delta? Is it an internal centrifugal switch?

Simon

Sent from my GT-I9195T using Tapatalk

Hi Simon,
On my mill its a relay on a timer. You start the mill, then after the set time the relay engages which changes the wiring over by cutting the start relay and powering the run relay. It is all done in the electrical cabinet. On some older machines it is done manually with a 3 position switch. You turn it to star, let the motor come up to full revs and then flick it to delta.

Ew

Sorry Simon, The "change over" I meant was between motors that are wired for 415Vstar/240Vdelta and motors that are wired for 415Vstar/415Vdelta.

Ewan covered your question. Star/delta is use to reduced startup current/torque

Stuat

Ha. I see. Thanks Ueee & Stuart.

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Thanks for the replies which I will pass on to the one with brains.

My two bits worth....
Most motors I have seen in that size range and with that terminal configuration are re-connectable very simply via the terminals.
The links from upper to lower terminals are connecting the junctions of the DELTA points, and all that is needed is to remove those links and use them to connect the 3 lower terminals together to create the STAR point. With the links removed you should be able to trace the ends of 3 separate isolated windings between the upper and lower terminal sets. On normal 415v operation it gives the option of reduced current starting in STAR mode and full power run in DELTA mode.
My mystery lathe from early last century has Metropolitan Vickers 5hp motor from 1912, with manual Star/Delta control and in Star mode I can inch the chuck round in small increments when setting upa big piece in a 4 jaw chuck. Very handy. Combustor.