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Operation
3–4 975-0053-01-01
Starting up the Sun Tie XR
To start up the inverter:
1. Switch on the 100-amp DC circuit breaker located in the Sun Tie XR
unit. This breaker supplies the DC power from the PV array to the
Sun Tie unit. Refer to Figure 3-3, item 1.
2. Switch on the 1 and 100 amp (ganged) PVGFP breakers. These
breakers open when 1 amp or greater is detected in the DC negative-
to-ground line; indicating a ground fault condition. Refer to Figure 3-
3, item 2.
3. Switch on the double-pole 15 amp AC circuit breakers located in the
Sun Tie XR unit. These breakers provide the Sun Tie XR-produced
power to the utility and provide the necessary utility voltage and
frequency to the inverter. This means the inverter will not produce an
AC output if utility voltage is not present on its output. Refer to
Figure 3-3, item 3.
Figure 3-2 AC voltage test
240 VAC
AC
VOLTS
DC
VOLTS
Connect to
L1 terminal
Connect to
L2 terminal