ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
ShoutChat
Recent Posts
How's Florida doing with Hurricane Ian?
by Bill Addiss - 09/28/22 12:41 PM
Tough being a lineman's kid
by Bill Addiss - 09/28/22 12:39 PM
GFCI's pops in large numbers
by dsk - 09/26/22 04:35 AM
AFCI’s Revisited
by sparky - 09/24/22 09:58 AM
NFPA Price Increase Coming
by Bill Addiss - 09/23/22 02:22 PM
New in the Gallery:
240/208 to a house
240/208 to a house
by wa2ise, October 9
Now you know.
Now you know.
by Tom_Horne, September 7
Who's Online Now
0 members (), 36 guests, and 21 robots.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate Thread
#129329 01/21/05 09:46 PM
Joined: Jan 2005
Posts: 6
S
Junior Member
Hello there. I am about to use a Universal Motor(a Mototr that can both operate in an AD or DC supply). However i am quite confused by its rating. It is rated at 120 Volts AC. But my supply or source is DC since i am going to use it outdoors. My question is:
Is it safe to use a supply of 120dc?
If not which of these supply can i use?(all in dc)

12 0r 48 volts?
what would be the ideal dc source of it?
will it be 120/sqrt of 2 v dc?

thanks,


Oh Yeah!
Joined: Jan 2005
Posts: 19
P
Member
There should be a voltage range in the nameplate on the enclosure of the motor or in the manual.

Normally this voltage range is same for AC or DC.For example,24-240,you can applied 24dc or ac,240 dc or ac.Higher voltage applied,more power the motor can output.So you can apply 24dc...48dc...50dc...100dc......to the motor,it depends on your appliance!!
But DO NOT exceed the rated voltage range!!!!

There is a frequency requirement for ac supply,for example 60HZ!!

when applied same voltage to this kind of motor,dc is more effective than ac!!

[This message has been edited by peterpang (edited 01-22-2005).]

Joined: Jul 2002
Posts: 8,423
Likes: 3
Member
No Way!.
splitzapper,
Where are you getting a 120VDC supply from?.
Using a lower than design voltage on a motor will always end in tears, as does a higher voltage.
Personally I'd stick with the AC mains and protect it with a GFCI, if the appliance is going to be used outside.
By the way, what sort of appliance is it?.


Link Copied to Clipboard
Featured:

Tools for Electricians
Tools for Electricians
 

* * * * * * *

2020 Master Electrician Exam Preparation Combos
2020 NEC Electrician
Exam Prep Combos:
Master / Journeyman

 

Member Spotlight
HotLine1
HotLine1
Brick, NJ USA
Posts: 7,313
Joined: April 2002
Top Posters(30 Days)
dsk 3
Popular Topics(Views)
297,527 Are you busy
228,341 Re: Forum
213,218 Need opinion
Powered by UBB.threads™ PHP Forum Software 7.7.5