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24 Volt DC Power Supply

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sbosecker

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I am interested in using a Jabsco 35770-0094 Blower in an application.

This item would require 24 Volt DC Power. If I'm reading the spec sheet correctly (link in first sentence of this post), this blower draws 6 amps @ 24 Volts DC and has a 10 amp fuse.

Since I would be using normal household current as a power source, I would need DC Power Supply.

Obviously I should get a 24 Volt DC Power Supply but what amp rating? I'm thinking 10 amps but I don't know what I don't know.

Scott
 
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rockwithjason

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10 amps or more. I think 10 amps is a standard that is readily available so amazon should turn up something with a decent price.
 
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404

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Blowers in general, and this one in particular, draw more current when back pressure of the system is low and air volume is high.

The charts in the spec sheet show this. For long term constant use with a import power supply might want to get a 15 amp supply. If this is a non critical application used only once in a while, 10 amps or so is okay. Would not suggest a 6.5 amp supply with a 6 amp draw. The power supply life is longer if located in a cool area.

Not sure, but the Xbox giant brick power supply might be 24 volts? Or not?
 
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ichabod

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most power supplies get rated in VA ( volt/amps)

so you have 24 volts X 10 amps = 240 VA (volt/amps)

you should get one at least this size.
 
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sbosecker

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404 said:
Blowers in general, and this one in particular, draw more current when back pressure of the system is low and air volume is high.

The charts in the spec sheet show this. For long term constant use with a import power supply might want to get a 15 amp supply. If this is a non critical application used only once in a while, 10 amps or so is okay. Would not suggest a 6.5 amp supply with a 6 amp draw. The power supply life is longer if located in a cool area.

Not sure, but the Xbox giant brick power supply might be 24 volts? Or not?
Click to expand...

404,

Thank you for your thoughts.

Basically it would only be used once in a while. I'll probably try a 10 amp supply. That's almost 2/3 more output that should be required.

Best regards,

Scott
 
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MTW

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I would suggest skipping the blower your looking at and use a 120V unit, eliminate a watt wasting power supply conversion and a brushed DC motor.

The cut sheet you linked to is for a marine application and is likely more costly than a AC powered version. In fact the one pictured on the right is an AC version. It has an oil filled AC running capacitor installed on it !

How about one from here, will this suit your need?
http://www.fantech.net/enus/Product_range/Inline-fans/

MTW Ω
 
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404

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sbosecker said:
404,

Thank you for your thoughts.

Basically it would only be used once in a while. I'll probably try a 10 amp supply. That's almost 2/3 more output that should be required.

Best regards,

Scott
Click to expand...

You are very welcome. Hopefully this will handle the momentary higher spin up current.

Regards,
404
 
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DSMR

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24VDC power supplies are used greatly in industrial control. You should be able to find one for a decent price.

Allen Bradley,ifm effector, sola, puls, Ect Ect. These are usually din rail mounted and can come in single phase power. Depending on the situation I usually power them off of 2 legs of 3 phase power (230vac) or with 480 get the 3 phase version power supply.
 
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sbosecker

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MTW said:
I would suggest skipping the blower your looking at and use a 120V unit, eliminate a watt wasting power supply conversion and a brushed DC motor.

The cut sheet you linked to is for a marine application and is likely more costly than a AC powered version. In fact the one pictured on the right is an AC version. It has an oil filled AC running capacitor installed on it !

How about one from here, will this suit your need?
http://www.fantech.net/enus/Product_range/Inline-fans/

MTW Ω
Click to expand...

MTW,

As you pointed out, one of the ones pictured is AC powered. The AC version of this blower is not ignition protected and I want that feature. Both of the models detailed in the sheet are DC powered. I can only speculate, having seen engineers goof with marketing, that engineering treachery may have been involved.

Example of same:

HKbulletsBackwards.jpg


In the above the bullets are backwards in the clip.

As I'm looking for something ignition protected... I'll have to look through the link you provided and see if any of those fans meet that criteria. At a glance, I doubt it.

Best regards,

Scott
 
Last edited:
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ddawg16

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Where are you using it where you are concerned about ignition?

I'm thinking it would be easier to modify the location and use a 120vac blower vs the cost and complexity of a 24Vdc
 
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sbosecker

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ddawg16 said:
Where are you using it where you are concerned about ignition?

I'm thinking it would be easier to modify the location and use a 120vac blower vs the cost and complexity of a 24Vdc
Click to expand...

ddawg16,

No matter where I located the actual blower, what's being pulled through the blower MIGHT have some vapor that is combustible.

Best regards,

Scott
 
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