Wrong high value

by Janele on Tue, 29/04/2014 - 08:38

Hi Community,
I have 3phase 220V system:

situaton - http://goo.gl/HLWA5l

between phases - 400V

I measure 721W with certificate wattmeter, but on fluksometer graph is 1000W.

graph - http://goo.gl/K48zfC

Any recommendations?

Thank you!

Jakub

gebhardm | Tue, 29/04/2014 - 14:47

Make sure that the clamps are tightly closed; any air gap of the ferrit in the clamp head will influence the readings. The clamp installation as such looks common, so no issue there.

Janele | Tue, 29/04/2014 - 20:43

Thanks, but all clamps are tightly closed.

bazzle | Sat, 03/05/2014 - 05:16

Can you change the voltage constant in setup page for sensor to adj erroe.

Janele | Sat, 03/05/2014 - 10:24

Thanks,
i made some tests.

My Rack input - 775W

Flukso without any clamps - 42W on flukso.net graph

220V in fluksometer seting - 1020W on flukso.net graph
184V in fluksometer setting - 780W on flukso.net graph

http://goo.gl/hraZ4l

Is this normal workaround?

bazzle | Sat, 03/05/2014 - 10:31

Yes , can be for current clamps.
Pulse meters you adjust the constants. (din rail meter)

Janele | Sun, 04/05/2014 - 20:18

Ok, thanks!