Installation
Three-Phase Stacking
In
The output of each inverter is 120° out of phase from the others. Any two outputs produce 400 Vac between them. The outputs can be used to power
Only three inverters, one per phase, may be installed in a
1.3 kVA 230 Vac | 1.3 kVA |
| 230 Vac |
1.3 kVA 230 Vac | 1.3 kVA | 3.9 kVA | |
400 Vac | |||
230 Vac | |||
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1.3 kVA 230 Vac
1.3 kVA
230 Vac
Figure 22 Example of Three-Phase Stacking Arrangement (Three Inverters)
When installing a
The inverter that is mounted physically lowest is always the master and is programmed as Master. (See the system display manual for programming.) Mounting below the other inverters allows the master to avoid heat buildup and remain relatively cool, as it sees the greatest duty cycle.
The master must be connected to port 1 of the HUB. Other inverters must not be selected as master.
One slave inverter must be programmed as 3p Classic B. The other must be programmed as 3p Classic C. (See the system display manual for programming.)
The inverters should be wired to loads, and to AC sources, in phase order. The master should be phase A, the first slave should be phase B, and the second slave should be phase C.
All inverter wiring and input breakers must be sized for 30 Aac or less.
All inverters must be of the same model.
The AC input (generator or utility grid) must be 230/400 Vac at 50 Hz (a
When wiring the AC source to the inverters, local codes may require the inverter breakers to be located at the bottom of the main panel. This prevents overloading of the AC bus.
IMPORTANT:
Although the HUB manual states that it is necessary to move the HUB’s jumper to the
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