【PM5560】About the value of In

[Miyai]

 Hello,

In the configuration below, the "In" value is larger than expected.

Do you know why the "In" value is so large?

I output three-phase 50A from the current generator.

At this time, the calculated "In" was assumed to be around 0-1A.

However, the measured value "In" was 70A.

I tried it with multiple PM5560s with the same results.

I have a PM5560 with the following settings:

FW Ver：4.4.9

3P4H Wye Gnd

250/5A

50Hz

I1, I2, I3 setting

(There is no wire connected to the I4 terminal.)

Regards,

Miyai

[Charles_Murison · Accepted solution]

Hello @Miyai 

A lot will depend on the phase angles of the current as well as the magnitude. In is not calculated on the RMS of the currents. The calculations are a bit more complex.

Regards,

Charles

[Miyai]

Hello @Charles_Murison 

Thank you for your advice.

This matter was resolved.

The tester output was incorrect.
The harmonic components had a negative effect.

Regards,

Miyai