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Installation and Operation Guide SOLECTRIA
XGI 1500 DCG Series Inverters
AC NEUTRAL
AC PHASE CONNECTIONS
Figure 3-13 AC Connections – Neutral and Ground (Left) and AC Phases (Right)
For aluminum connections, follow these steps to prepare the wires, one wire at a time.
a) Remove the appropriate amount of insulation from the wire.
b) Use a wire brush to remove the oxidation layer from the exposed aluminum conductors.
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c) Immediately apply a neutral dielectric grease (such as Noalox
) and connect the cable to the terminal.
If the aluminum conductor is not secured within 30 seconds of applying the grease, repeat this process, as an
oxidized layer may have formed on the surface of the conductor. An oxidized layer is a poor conductor that
could lead to thermal issues, production loss, or damage to the inverter.
Clockwise Phase Rotation: Ensure that the inverter is installed with a clockwise phase rotation. A
counterclockwise phase rotation will prevent the inverter from running. If the inverter reports a Phase Lock
Loop (PLL) error, or the frequency/voltage measurements seem incorrect, check the phase rotation. Swapping
any two AC conductors will reverse the phase rotation.
AC Breaker Specifications
The AC output of the Solectria XGI 1500 series inverters requires connection to a 3-pole AC breaker with ratings
as specified in Table 3-3.
Table 3-4 AC Breaker Specifications
XGI 1500-
XGI 1500-225-
XGI 1500-
XGI 1500-175-
250/250-600-DCG
600-DCG
200/200-480-DCG
480-DCG
350 A
350 A
350 A
350 A
AC Breaker Size
(3 pole, 600VAC)
(3 pole, 600VAC)
(3 pole, 480VAC)
(3 pole, 480VAC)
DOCR-071081-B
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