7 Acceptance/Protection Function Test Guide
7-2
L-PRO 4000 User Manual
D02706R02.30
Calibration
The relay is calibrated before it leaves the factory; but if component changes
are made within the relay, the user may need to do a re-calibration.
To perform a calibration, the user must be logged into the relay using Relay
Control Panel at the Service access level to the front USB Port. Proceed to the
Utilities>Analog Input Calibrate
. The
Calibrate
menu leads the user through
every analog input and prompts the user to apply the appropriate quantity.
Figure 7.1: Enter actual applied signal level
Set nominal CT secondary current to either 5 A or 1 A, and nominal
system frequency to either 60 Hz or 50 Hz. This example uses 5 A/
60 Hz.
Before beginning a new calibration, establish the accuracy of the
equipment being used.
Summary of Contents for L-PRO 4000
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