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Power recommendations 24V DC

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nick639v2
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Power recommendations 24V DC

Postby nick639v2 » October 18th, 2018, 9:39 am

Don't know where to direct this question but car audio men should know i guess.

Looking for a stable, heavy duty way of getting a 24V DC output between 25-30 amps.

It won't be used to charge batteries but instead to power an commercial 24v motor reliably for 2-3 hours once a month..

I'm not sure if a battery charger/power supply will suffice as a constant power source.

Any recommendations will be appreciated.
Last edited by nick639v2 on October 18th, 2018, 9:39 am, edited 1 time in total.

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hong kong phooey
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Re: Power recommendations 24V DC

Postby hong kong phooey » October 18th, 2018, 10:45 am

nick639v2 wrote:Don't know where to direct this question but car audio men should know i guess.

Looking for a stable, heavy duty way of getting a 24V DC output between 25-30 amps.

It won't be used to charge batteries but instead to power an commercial 48v motor reliably for 2-3 hours once a month..

I'm not sure if a battery charger/power supply will suffice as a constant power source.

Any recommendations will be appreciated.


you looking for a 24V power supply to power a 48V motor?

if is a typo look on amazon or ebay for a power supply 24V output 40 A . make sure you check your supply voltage is 110 or 220 single phase .

https://www.amazon.com/AmpFlow-SCN-1000 ... J49BCR0R84

https://www.ebay.com/itm/AC-110V-220V-T ... Uasc4rRv6Q

adnj
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Re: Power recommendations 24V DC

Postby adnj » October 18th, 2018, 11:16 am

If you want a 24v or 48v power supply, you can try Webco, Computer Power & Supplies, etc.

Look in the Yellow pages under power supplies.

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Re: Power recommendations 24V DC

Postby fokhan_96 » October 18th, 2018, 11:42 am

Blackout Power Systems.... check them on Facebook

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Re: Power recommendations 24V DC

Postby pugboy » October 18th, 2018, 11:57 am

You can make one easily with 2-12vcomputer server power supplies cheap off eBay
Need to unground one of them

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Re: Power recommendations 24V DC

Postby rspann » October 18th, 2018, 12:32 pm

Check out Anand's Electrical, they might have.

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nick639v2
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Re: Power recommendations 24V DC

Postby nick639v2 » October 18th, 2018, 1:25 pm

rspann wrote:Check out Anand's Electrical, they might have.


I see what u did there

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nick639v2
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Power recommendations 24V DC

Postby nick639v2 » October 18th, 2018, 1:35 pm

hong kong phooey wrote:
nick639v2 wrote:Don't know where to direct this question but car audio men should know i guess.

Looking for a stable, heavy duty way of getting a 24V DC output between 25-30 amps.

It won't be used to charge batteries but instead to power an commercial 48v motor reliably for 2-3 hours once a month..

I'm not sure if a battery charger/power supply will suffice as a constant power source.

Any recommendations will be appreciated.


you looking for a 24V power supply to power a 48V motor?

if is a typo look on amazon or ebay for a power supply 24V output 40 A . make sure you check your supply voltage is 110 or 220 single phase .

https://www.amazon.com/AmpFlow-SCN-1000 ... J49BCR0R84

https://www.ebay.com/itm/AC-110V-220V-T ... Uasc4rRv6Q


Sorry 24V

I came across those but I'm skeptical about the ebay onebecause the motor carries at least 6 guage wiring and i know those are mainly used in light applications like lights etc...

The Amazon one looks better built ..


Image

Motor is very similar to this,

rated
4.8hp @ 24v
10hp @ 48v

They didn't specify amperage rating at 48v tho but I'm suspecting it will be less...

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Re: Power recommendations 24V DC

Postby adnj » October 18th, 2018, 2:22 pm

nick639v2 wrote:
Motor is very similar to this,

rated
4.8hp @ 24v
10hp @ 48v

They didn't specify amperage rating at 48v tho but I'm suspecting it will be less...


This looks like a traction motor. A 1 HP motor uses more than 750 Watts. That's more than 15.5 A @ 48 V or 31 A @ 24 V. Yours is five times that.

Even at half capacity, you are looking at an 80 A supply. That is one big a$$ supply. You can either:

1. Swap the motor for a 230V AC single phase 5 to 10 HP motor (you can run the motor from a welding outlet wired directly to a circuit breaker panel)
2. Charge a bank of batteries with a 12 V charger to provide the necessary power at 24/48 V by hooking them up in series
3. Buy the power supply which is about the size of a small refrigerator. They are available from local suppliers. My guess on the cost is about TT$20,000
Last edited by adnj on October 18th, 2018, 2:22 pm, edited 2 times in total.

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Re: Power recommendations 24V DC

Postby Defiant » October 18th, 2018, 2:25 pm

If you could state the current draw, Rpm and use of the motor it would help, if it is starting at full load then the supply will need to handle it. Then there is the question of money, how much it going to cost you and how much you willing to put out. Solutions are abound from the simple use of 12volt batteries in series to buying a DC drive capable of handling the load, hell you could get a AC equivalent and use that.

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Re: Power recommendations 24V DC

Postby pugboy » October 18th, 2018, 3:04 pm

You need to read this
http://www.tjinguytech.com/my-projects/diy-24v-47a

Lot of radio control guys locally use these to provide high amperage for charging lipo batteries.

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Re: Power recommendations 24V DC

Postby adnj » October 18th, 2018, 3:48 pm

That setup is about 1.1 kW (according to the article). The OP is looking for something closer to 5 kW.
pugboy wrote:You need to read this
http://www.tjinguytech.com/my-projects/diy-24v-47a

Lot of radio control guys locally use these to provide high amperage for charging lipo batteries.

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Re: Power recommendations 24V DC

Postby pugboy » October 18th, 2018, 3:52 pm

didnt he say 30amps 24v ?
those in the article are 47amps
you can get server power supplies 55,75 amps
I had a 55 amp set and sold

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Re: Power recommendations 24V DC

Postby pugboy » October 18th, 2018, 3:54 pm

I would suggest he use the car battery setup and a shunt amp meter to see how much current the motor really pulling
as car batteries can provide high amps for shortish periods so he can see the true current draw

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Re: Power recommendations 24V DC

Postby adnj » October 18th, 2018, 4:32 pm

The motor OP posted can pull more than 150 amps running and over 800 A at start up, worst case.

Of course I have no idea what his load is, so it's anyone's guess.
pugboy wrote:didnt he say 30amps 24v ?
those in the article are 47amps
you can get server power supplies 55,75 amps
I had a 55 amp set and sold

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nick639v2
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Re: Power recommendations 24V DC

Postby nick639v2 » October 18th, 2018, 5:44 pm

adnj wrote:
nick639v2 wrote:
Motor is very similar to this,

rated
4.8hp @ 24v
10hp @ 48v

They didn't specify amperage rating at 48v tho but I'm suspecting it will be less...


This looks like a traction motor. A 1 HP motor uses more than 750 Watts. That's more than 15.5 A @ 48 V or 31 A @ 24 V. Yours is five times that.

Even at half capacity, you are looking at an 80 A supply. That is one big a$$ supply. You can either:

1. Swap the motor for a 230V AC single phase 5 to 10 HP motor (you can run the motor from a welding outlet wired directly to a circuit breaker panel)
2. Charge a bank of batteries with a 12 V charger to provide the necessary power at 24/48 V by hooking them up in series
3. Buy the power supply which is about the size of a small refrigerator. They are available from local suppliers. My guess on the cost is about TT$20,000



I'm going to do the bank test this weekend self.

The motor is suspected to be from one of those genie lifts that were powered by 4 6v batteries indeed..

Once i get the actual amperage draw i will post back.

Thanks. I'll try to get a pic of the info plate on the motor itself.

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Re: Power recommendations 24V DC

Postby pugboy » October 18th, 2018, 7:19 pm

Ok I didn't look at the motor, seems like a winch type heavy motor.

Op do you have a shunt meter to measure the amps like this
https://m.youtube.com/watch?v=1mpuF2Ss7J8

I supposed to have one somewhere.


adnj wrote:The motor OP posted can pull more than 150 amps running and over 800 A at start up, worst case.

Of course I have no idea what his load is, so it's anyone's guess.
pugboy wrote:didnt he say 30amps 24v ?
those in the article are 47amps
you can get server power supplies 55,75 amps
I had a 55 amp set and sold

adnj
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Re: Power recommendations 24V DC

Postby adnj » October 18th, 2018, 8:08 pm

As pugboy said, a few deep cycle batteries and any charger may be all that you need to run the motor for 4 hours per month.

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hong kong phooey
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Re: Power recommendations 24V DC

Postby hong kong phooey » October 20th, 2018, 2:11 am

Whats your plan for the motor , it might be cheaper to get another motor running on AC than trying to source a power supply and batteries.

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