Is variac rated to supply 16Arms?

Status
Not open for further replies.
C

cupoftea

Advanced Member level 6
Joined
Jun 13, 2021
Messages
3,059
Helped
62
Reputation
124
Reaction score
139
Trophy points
63
Activity points
15,965
Hi,
Not sure if the attached variac is rated to be able to supply my RSP-1500-27 Meanwell PSU at 100VAC....(13.2A rms input current)...this is from a 240VAC mains into the variac.
But the mains current looks pretty sinusoidal (as attached) so it should be ok?

Used a tektronix A6303 current probe to get mains current waveform at input to PSU.
 

Attachments

  • 100VAC 24V 50A_.jpg
    93.4 KB · Views: 154
  • CAROLL AND MEYNELL.jpg
    31.4 KB · Views: 156

Sort by date Sort by votes
Hi,

I can't read the variac's plate.... what does it say?

If the variac is rated for 16A RMS, then you may draw 16A RMS, independent of waveform.
(Assuming standard ambient temperature and airflow).

Klaus
 
Upvote 0 Downvote
Thanks,, the variac has no plate saying anything about rating. It doesnt even have a part number.
 

Upvote 0 Downvote
cupoftea said:
Thanks,, the variac has no plate saying anything about rating.
Click to expand...
Don't hesitate to show a readable photo of the seemingly useless information on the transformer top though...
--- Updated ---

cupoftea said:
But the mains current looks pretty sinusoidal (as attached) so it should be ok?
Click to expand...
Unfortunately the sine waveform tells nothing about sufficient rating.
 
Upvote 0 Downvote
While being an inexact strategy, I would compare the weight of this Variac with others of similar and different ratings, and I'd bet you would find a way to infer an approximate value for the nominal current, there is no intricate science on the design of these magnetic parts.
 

Upvote 0 Downvote
Status
Not open for further replies.

Similar threads

Menu
Log in
Register
Cookies are required to use this site. You must accept them to continue using the site. Learn more…