Product Manual

Commissioning
10 900-0145-01-01 Rev B
Figure 3 AC Test Points
4. Using a DVM or voltmeter, verify 230 Vac (or appropriate voltage) between the “L” and “N” OUT
terminals. (See Figure 3 for AC test points.) The inverter is working correctly if the AC output reads
within 10% of 230 Vac or the programmed output voltage.
5. Proceed past the items below to Step 6 on the next page.
To start a multiple-inverter (stacked) system:
1. Close the main DC circuit breakers (or connect the fuses) from the battery bank to the inverter.
Repeat for every inverter present.
2. With the system display, perform any programming for stacking and all other functions.
These functions may also include AC input modes, AC output voltage, input current limits, battery
charging, generator starting, and others.

When stacking in parallel, all slave inverters will observe the programming settings for the master. They
do not need to be programmed individually.

When stacking in three-phase configuration, all subphase masters will observe the AC input mode and
many of the settings used by the master inverter. However, they need to be individually programmed
as appropriate for AC output voltage and frequency. They also need to be programmed for AC input
voltage and frequency (for both AC inputs). All slaves will observe the programming settings for the
master or for their individual subphase master. They do not need to be programmed individually.
AC input modes are described beginning on page 13 and are summarized on page 21. The
inverter’s individual operations are described beginning on page 22. Stacking is described
beginning on page 36. The MATE3 Configuration Wizard may be used to assist programming.
3. Turn on the master inverter using the system display (or external switch, if one has been installed).
The Radian’s default condition is Off. Do not turn on any AC circuit breakers at this time.
4. Using a DVM or voltmeter, verify 230 Vac (or appropriate voltage) between the master “L” and “N”
OUT terminals. (See Figure 3 for AC test points.)

The inverter is working correctly if the AC output reads within 10% of 230 Vac or the programmed
output voltage.

If subphase masters are used in three-phase configuration, perform this test on each subphase master.
If necessary, confirm appropriate voltages from one inverter to the next.
Metal pads are located at these
locations. In commissioning,
AC voltages can be measured at
this series of test points.