inductive load

[lotus7312]

Hi, all,
Can anyone explain the sentence below?
Inductive load: 50VA @120VAC OR 240VAC

What if the voltage is 220VAC?
THANKS

 

[nbucska]

same -- if 120 and 240 are equivalent, 220 must be OK, too.
( I assume this is the spex of some switching device )

<nbucska@pcperipherals.com>

 

[Baldor]

What is the sentence written on? Sounds to me like a rating meaning you can draw(or source) 420 mA when cofigured for 120, or 210 mA for 240. Use the 240 configuration for 220, but don't exceed 210 mA.

 

[lotus7312]

Thank you for the answer.
This sentence is written on the spec sheet for one controller.

Baldor,
How did you get 420mA for 120V and 210mA for 240?

 

[buzzp]

The current sourced or whatever can be found from the info you gave by assuming a purely resistive load and hence VA is simply volts*amps. You know the VA (50) and the voltages (120 and 240), solve for A and you get the numbers Baldor gave you.
Generally in a switching device they will give you a make and break VA rating such as a mechanical relay.

 

[jbartos]

Suggestion: The sentence in the original posting might be interpreted as follows:
There is a 50VA transformer. As a piece of the hardware it is 50VA and it is assumed that it cannot be bigger, modifed or changed. Then, the transformer has primary winding taps at 120V and 240V. Consequently, if it is supplied by 220V it will have VA220=(220V/240V)x50VA=45.8333....VA
Alternately, there might be something similar to the transformer load.