PLATE 4827841 - Caterpillar

Illustration 1 g01272329
"Selector switch" for the UPS
Note: Refer to the Systems Operation, Testing and Adjusting, UENR3954, "Personal Computer to UPS Connection" in order to connect to the UPS and to log in to the UPS.
Click "Calibrate" on the tool bar. From the drop-down menu, select "System Voltages". A "Calibration of a Channel" dialog will open.
Illustration 2 g01272331
System voltages
Click the "View Status" button. Another "Calibration Status" dialog will open. Drag the dialog aside if the dialog blocks your view of "Calibration of a Channel" dialog.
Click on "Use Defaults" on "Calibration of a Channel" dialog. You will be prompted to "Enter Calibration Point for System Input Line Volts AB".
Illustration 3 g01272334
"System input voltage"
Measure the system input voltage from "Phase A" bus to "Phase B" bus. Enter the measured value in the "Enter Calibration Point" field. Click "OK". The system will process the calibration. The system will automatically prompt the user to "Enter Calibration Point" for the "System Input Line Volts BC".The "Calibration Group Status" dialog will display "Calibration complete but not saved" for "System Input Line Volts AB".
Illustration 4 g01272387
"System input lines"
Measure the system input voltage from "Phase B" bus to "Phase C" bus and enter the measured value in the "Enter Calibration Point" field. Click "OK". The system will process the calibration again. The system will automatically prompt the user to "Enter Calibration Point" for "System Input Phase Volts BN".The "Calibration Group Status" dialog will Display "Calibration complete but not saved" for "System Input Line Volts BC".
Illustration 5 g01272392
UPSView " system input phase volts"
Measure the system input voltage from "Phase B" bus to the neutral terminal, if this system is a four wire system. If the system is a three-wire system, measure from the "Phase B" bus to a ground terminal. Enter the measured value in "Enter Calibration Point" field. Click "OK". The system will process the calibration again. The system will automatically prompt the user to "Enter Calibration Point" for "System Bypass Line Volts AB".The "Calibration Group Status" dialog will display "Calibration complete but not saved" for the "System Input Phase Volts BN".
Illustration 6 g01272568
"System bypass line volts"