This dialog performs the offset calibration.
If a non-standard calibration sensor is used, please adjust the conversion factor accordingly by pressing the input
field.
The default value of 2,000 A/V is correct for the standard calibration tool sensor (LEM 20,000 A / 10 VDC).
CAUTION : The High-speed DC Circuit Breaker must be closed.
Ensure that the trip level is well beyond the range of the calibration tests and avoid opening the device
during calibration.
Press ‘Calibrate Offset’ to perform the calibration.
The button will be highlighted in green if the calibration ended successfully. The resulting value is displayed.
Press OK to confirm, and continue by pressing ‘Next’.
Error message:
The offset calibration only tests a limited range for the resulting value (0 - 1,500). The nominal value is around 230.
If the offset is not found within this range, the following error dialog is displayed:
This error means that the maximum offset value has been reached without measuring current from the calibration
sensor.
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Calibration