Setup > Modules > Modules Output Current Calibration; Setup > Modules > Dc Voltage Calibration; Setup > Modules > Ac Output Voltage Adj; Setup > Modules > Battery Voltage Calibration - Gamatronic Centric 50 kVA User Manual

Calibration should be performed only under conditions where the input and output current are
stable and not subject to fluctuation.
6.1.2.4 Setup > Modules > MODULES OUTPUT CURRENT CALIBRATION
Use this function if it becomes necessary to recalibrate the current readings of one of the UPS's
output phases. The value you enter is sent to all modules, so output current calibration should
only be performed on one module at a time, with all of the other modules turned off. (To turn
modules OFF, see section 6.2.1.3 "Operation > Switch on/off > MODULES OFF".)
To perform the calibration, measure the current of the output phase with an ammeter, then enter
the measured value into this screen and press "confirm". When you press "confirm", only the
values that you have modified (indicated by a change in color of the numbers from white to
orange) are sent to the module.
For your reference, the present UPS-measured values are displayed on the right side of the
screen.
Note:
•
Modules output current calibration should be performed only if necessary, not casually.
•
Modules output current calibration should be performed only under conditions where the input
and output current are stable and not subject to fluctuation.
•
Calibration is best performed when the system is under relatively high load (70+ %).
6.1.2.5 Setup > Modules > DC VOLTAGE CALIBRATION
Use this function if it is necessary to recalibrate the reading of the UPS's internal dc voltage. The
readings for the positive and negative components of the dc voltage are calibrated separately,
and can be increased or decreased.
To perform the calibration, measure the internal dc voltage with a multimeter, then enter the
measured value into this screen and press "confirm". Calibration should be performed only under
conditions where the UPS's input and output currents and voltages are stable and not subject to
fluctuation.
6.1.2.6 Setup > Modules > AC OUTPUT VOLTAGE ADJ.
Use this function to modify the voltages of the individual output phases of a specific power
module. The phase voltage can be adjusted upward or downward by up to 15 V.
6.1.2.7 Setup > Modules > BATTERY VOLTAGE CALIBRATION
Use this function if it is necessary to recalibrate the reading of the battery voltage. The readings
for the positive and negative components of the dc voltage are calibrated separately, and can be
increased or decreased.
To perform the calibration, measure the dc voltage between the UPS's positive battery terminal
and neutral battery terminal, and between the UPS's negative battery terminal and the neutral
battery terminal. Enter the measured values into this screen and press "confirm". Calibration
should be performed only under conditions where the UPS's input and output currents and
voltages are stable and not subject to fluctuation.
6.1.2.8 Setup > Modules > SERIAL NUMBER
This function enables you to record the serial number of each UPS power module in memory, for
easy reference.
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Gamatronic Electronic Industries Ltd.
CENTRIC User Guide, Release 0.3