Voltage Inputs Burden Rating for ION and Powerlogic Meters

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Voltage Inputs Burden Rating for ION and Powerlogic Meters

Issue
Burden rating for the voltage input terminals.

Product Line
ION6200 series, ION7500 series, ION7600 series, ION8600 series, PM5000 series, PM8000 series, PM800 series

Resolution
The voltage input terminals for the Powerlogic and ION meters have a fixed input impedance.
The burden can be calculated thus:

VA per phase = (Input Voltage^2) / (Input impedance)

Kindly refer to the installation guide for your meter's for specifications.
All meter documentation can be found in the Schneider Electric website: http://www.schneider-electric.com

Note for socket meters:
The voltage measurement terminals with the standard power supply options have the same VA rating as the power supply:
20VA max.

The meters with the AUX power supply option measurement terminals have a 5 Mega Ohm input impedance.
For example, if the voltage coming into the terminals is 120V:
V^2/R = 120V^2 / 5Meg = 2.88 x 10^-3 VA per phase.