Electrical Installation - ABB PowerValue 11 RT Series User Manual

3.4 Electrical installation

3.4.1 Commissioning
The commissioning of the UPS includes the connection of the
UPS and batteries, the verification of the electrical installation
and operating environment of the UPS, and the controlled
start-up and testing of the UPS and customer training.
DO NOT OPERATE IN CASE OF PRESENCE OF
WATER OR MOISTURE.
CAUTION
DANGER
WHEN OPENING OR REMOVING THE UPS COVERS
YOU ARE EXPOSED TO DANGEROUS VOLTAGES.
WARNING
14 PowerValue 11 RT 6-10kVA | User manual
3.4.2 Recommended cable sections and fuse ratings
When selecting the cable cross sections and the protective
devices, follow the recommendations in the technical
specifications document or follow local standards.
ABB recommends that an external isolating device is installed
between the mains input and UPS as shown in Figure 11 to
protect against back-feed currents.
Input main breaker
Line input
Neutral
AC Contactor: 208-240V, 35A (PowerValue 11 RT 6 kVA)
208-240V, 50A (PowerValue 11 RT 10 kVA)
Figure 11: External back-feed isolation
RISK OF BACKFEED VOLTAGE. ISOLATE THE UPS
BY INSTALLING AN EXTERNAL ISOLATING DEVICE
DANGER
BETWEEN THE MAINS INPUT AND THE UPS.
BEFORE OPERATING ON THIS CIRCUIT, CHECK
FOR HAZARDOUS VOLTAGE.
WARNING
AC Contactor
Mains
Input
Coil Remote
Switch