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Advice on quick cable disconnect for DC power supply to a motor

M

Mcgyver

Ultra Member
I have a DC motor, 1 or 1.5 hp irrc which is mounted on a dive unit (speed reduction counter shaft and heavy cast frame) under a bench. A DC motor driver supplies power from atop of the bench. I think its 180V. What I'd like is a cable coming out of the DC motor to a connector that plugs into a connector on the cable coming from the DC motor driver. Everything is indoors.

Something like an XLR connector, except they are not power rated. Ideally inexpensive and on Amazon. Powercon would be great, but all the reasonably priced ones on amazon are cable to panel.

I want be able to pull this drive/motor assembly out for oiling and service which is a pita to do with it hardwired.

Thanks!
 
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If I understand the application correctly, maybe XT style connectors? Popular in RC & ancillary equipment. The 60 refers to continuous amp rating which is the parameter of interest. Typically used on 12 AWG stranded wire for reference. They are shape polarity protected to mitigate redandblackacitus. You just solder the stripped end of wire into the metal bullet protruding from housing (I can give you a few tips). They also have panel mount styles using the same format. 90A versions (black) also available. Anderson powerpoles are very useful too but you need a crimping tool.

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Thanks for ideas gents. Chazz, that sort of form factor seems right. I should have mentioned the cable is an SJ cable, the rubber covered stuff and it needs to be three pin. Pete these are for cable to cable not to a panel and given its 180V it should have positive lock.

I found these that look promising, price is higher than I'd hoped but its not outrageous.

 
Hello,

There are plenty of solutions as I'm sure you know. I would look into a pair of twist locking female and male extension cord ends. They are fairly cheap, yes rated for AC power but will work just as well with DC. Unfortunately if you are needing liquid tight the price always jumps up.

Look into a
NEMA L14-30R
And
Nema L14-30P

The (30P) is amprating you can lol up high of lower if you want. R is (female) and P is (male).

I'll attache a chart for nema locking cord ends. Keep in mind some styles are rare and not easy/ impossible to get if not common.

Hope this helps,


NEMA Receptacle Chart - Twist Lock Receptacle Reference Chart | StayOnline

This NEMA receptacle chart provides technical drawings and specifications for NEMA locking plugs, receptacles, inlets, outlets, connectors and cords. Use the NEMA locking reference chart to identify rating, configuration and suitability data.
www.stayonline.com www.stayonline.com
 
(I posted but added a link guess it wont post as im to new. I mentioned what Chazz is saying)

Hello,

There are plenty of solutions as I'm sure you know. I would look into a pair of twist locking female and male extension cord ends. They are fairly cheap, yes rated for AC power but will work just as well with DC. Unfortunately if you are needing liquid tight the price always jumps up.

Look into a
NEMA L14-30R
And
Nema L14-30P

The (30P) is amprating you can lol up high of lower if you want. R is (female) and P is (male).

I'll attache a chart for nema locking cord ends. Keep in mind some styles are rare and not easy/ impossible to get if not common.

Hope this helps,
 
One tip for twist lock connectors. Before connecting them, twist the cable the opposite way. Introduce enough strain so that it is hard to accidentally turn the other way and disconnect. Usually 1 turn is enough.
 
Mcgyver said:
Pete these are for cable to cable not to a panel and given its 180V it should have positive lock.
Click to expand...
The XT style are predominantly cable to cable as well. I just mentioned panel ends as a further option. But I hear you on the voltage level & positive lock. These are friction but very positive. Didnt know they even made 3-prong versions now. Anderson Powerpoles do have a positive detent click when engaged. But sounds like you have some better solutions.

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