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Phys
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Motor Connector

08/10/2015 3:24 PM

Just got an European built motor (or built in Asia for an European company) for use on a 480V 3Φ system, 22KW. I've always received motors from this company with pre-drilled and tapped 32mm or 25mm holes in the cast motor jb, into which I screwed a good cable gland. (enclosed machinery - no need for conduit - we use cable tray rated VFD cable and glands) This one has me baffled. On top/bottom of the cast motor jb, directly inline with the motor terminals, is a cast metal cover/gasket about 135mm long x 33mm wide x 8mm thick bolted on with 4 @ 5mm screws. Too small a space inside the gasket to drill for a 1" NPT cable gland to handle my VFD cable.

I suspect there is some sort of an European connecting device (plug/receptacle) made that will fit in place of one of the cast plates. Anyone familiar with this? (I don't want to go the manufacturer and look like an idiot when I ask what goes in the hole and they tell me just to drill it for a cable gland) The motor manual is all of 4 pages long in the English section and does not mention anything about entry of the motor cable. They do tell me to use shielded VFD cable and ground at both ends.

I Googled a brief description and got a host of wonderful multi-conductor rectangular signal plugs/receptacles. Probably am Googling a poor description.

Maybe the Europeans use oval shaped conduit? Nahhh. Would never work.

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Original_Macgyver
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#1

Re: MOTOR CONNECTOR

08/10/2015 4:24 PM

Can you post a picture?

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Original_Macgyver
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#2

Re: Motor Connector

08/10/2015 4:56 PM

That motor is wired for an American electrical hookup. Where is it being installed?

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Phys
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#9
In reply to #2

Re: Motor Connector

08/11/2015 8:21 AM

Right here in NW Pa.

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SolarEagle
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#3

Re: Motor Connector

08/10/2015 5:35 PM

Can you replace the cover with a box?

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JRaef
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#4

Re: Motor Connector

08/10/2015 6:24 PM

Does it look like this?

That's what's called a "Harting connector", Harting is the original mfr, there are several other brands that sell them now as well. Much more common in IEC world than here, but you can buy them here if you know where to look.

http://www.harting.com/en/product-center/harting-for-your-business/factory-automation/motor-connection-with-han-drive-R/

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spades
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#5
In reply to #4

Re: Motor Connector

08/10/2015 8:14 PM

I use Harting Han connectors regularly for motor and control connections.

They are a plug in device with a retaining clip.

Normally you would order the motor with the correct connector configuration for your requirements, the motor would then not have standard motor terminals, rather the plug receptacle ready for use. This does not seem to be the case here.

Below is a pic of one of the ones that I use, it is a male, and so would not be used for a motor supply connection, but the principal for the female is the same.
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Phys
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#8
In reply to #5

Re: Motor Connector

08/11/2015 8:20 AM

The base does not match the hole for the cast plate. It is just a rectangular hole of dimensions slightly less than the plate dimensions. This is not the connector intended for my jb.

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pnaban
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#6
In reply to #4

Re: Motor Connector

08/10/2015 11:03 PM

A 4pole industrial plug also could be fitted on cover of terminal box.

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Phys
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#7
In reply to #4

Re: Motor Connector

08/11/2015 8:17 AM

It is just a flat cast plate of dimensions as given - I was hoping the dimensions would trigger someone to say "Yes - that is intended for a connector called a ------." I was assuming it was meant for something like you have shown here.

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Phys
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#10

Re: Motor Connector

08/11/2015 10:55 AM

Okay - doesn't matter anymore. This industry moves very quickly. There is enough thickness to allow a tapping operation, and in that case, a 1"NPT will fit. Just fit inside the gasket, but it will fit. Plate has been tapped and I will use a cable gland for entry of the VFD cable. Topic done - thanks all for your responses.

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Original_Macgyver
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#11
In reply to #10

Re: Motor Connector

08/11/2015 1:37 PM

Thanks for the update.

Good luck!

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JRaef (1); Original_Macgyver (3); Phys (4); pnaban (1); SolarEagle (1); spades (1)

Previous in Forum: Optimum Binary Signal One Can Transmit on a 1 Hz Frequency   Next in Forum: Failure of Tripping Coil in MV Breaker

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