Paralleling The Units - ABB PowerValue 11 RT Series User Manual

3.7 Paralleling the units

Up to 2 UPS units can be connected in parallel with
PowerValue 11 RT 6-10 kVA to obtain output power sharing
and power redundancy.
3.7.1 Output wiring requirements
The following requirements must be met for output wiring:
• When the distance between the UPS in parallel and the
breaker panel is lower than 10 meters, the length difference
between input and output cables of the UPS must be lower
than 20%.
• When the distance between the UPS in parallel and the
breaker panel is more than 10 meters, the length difference
between input and output cables of the UPS must be lower
than 5%.
3.7.2 Installing a new parallel system
To install a new parallel UPS system:
1. Prepare the input and output wires, the input and output
breakers and the parallel cable. For more information, see
Chapter 3.4.2
2. Parallel the units with the 15-pin communication cable
provided with the UPS.
3. Connect the External Battery modules independently to
each UPS.
4. Connect the input and output wires as shown in Figure 27.
Note that all breakers should be opened.
input
breaker
Figure 27: Parallel system wiring diagram – PowerValue 11 RT 6kVA and
10kVA
output input
breaker breaker
output
breaker
User manual | PowerValue 11 RT 6-10kVA 21