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How is current unbalance calculated on the DM6200?

Issue
The Current Unbalance formula is not detailed in the DM6200 User Manual.

Product Line
DM6200

Environment
Reading verification

Resolution
The current unbalance is calculated using the following equation:

I unbalance = (Max phase current - Min phase current) / Avg 3 phase current * 100

For example:

Ia = 100 A
Ib = 120 A
Ic = 150 A

Therefore, Max phase current = 150 A, Min phase current = 100 A, and Avg 3 phase current = (100 + 120 + 105) / 3 = 108.3 A.

I unbalance = (150 - 100) / 108.3 * 100 = 46.2 % unbalance
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