Siemens MJ-5 Installation And Operation Manual page 59

Note: If password protection is in effect, you must enter
the password to enable calibration. The default password
for the <DIAGNOSTICS> menu is "3333".
8.4.6 Calibrating the Load Current
Note: To calibrate the current, disconnect the panel from
the tap changer apparatus. Remove Terminal Strip jumper
at TB1B-9 & 10. Connect an external ammeter, and apply
an external AC current source, per Table 8.2. After
calibration, replace Terminal Strip jumper at TB1B-9 & 10.
The Load Current (Ild) has calibration set-point, C/C2.
Calibrate the set point with an external true RMS ammeter
connected at the rear panel (terminal strip contacts TB1B-9
& 10). Connect a (nominal) 0-200 mA AC current source at
C/C2 (terminal strip contacts TB1A- 3 & 5).
Apply the C/C2 calibration current (per Table 8.2). Use the
Menu and Scroll keys to view the "C/C2" screen. To
calibrate, press the Change/Save key, then the ▼ or ▲ key
to make the value shown at the MJ-5 display agree with the
external ammeter value. When the correct value is
displayed, press the Change/Save key to complete the
process.
Note: If password protection is in effect, you must enter
the password to enable calibration. The default password
for the <DIAGNOSTICS> menu is "3333".
Table 8.2 Voltage and Current Calibration
Siemens Industry, Inc. 55