7EN02-0390-03

Auto-scaling feature

Measurement units on the meter display and webpages automatically scale, depending on the value of PT Primary and CT Primary.

Voltage units are scaled based on the PT Primary value:

PT Primary value Units or scaling
< 1000 V
1000 to 999,999 kV

Current units are scaled based on the CT Primary value:

CT Primary value Units or scaling
< 1000 A
1000 to 999,999 kA

Power units are scaled according to the value of (CT Primary x PT Primary x 3):

(CT Primary x PT Primary x 3) value Units or scaling
< 1,000,000 kW, kVAR or kVA
1,000,000 to 999,999,999 MW, MVAR or MVA
≥ 1,000,000,000 GW, GVAR or GVA
Team decision is NOT to refer to the KB article that explains how to change the autoscaling behavior, i.e., changing the PT/CT Primary values and the PT/CT Secondary values so the ratios are still the same as the original. Problem with this is: If they already have a system in service, any change to the PT/CT Primary value will cause false alarms, sag/swells and similar events, which is BAD for the customer. Don’t even mention Tech Support here.

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