
Installation and Operation Guide SOLECTRIA
®
XGI 1500-250 Series Inverters
DOCR-071074 (Rev 7, 30 MAY 2023)
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Figure 3-111 Prohibited Transformer Configurations
The XGI 1500 inverter cannot operate connected to a delta service, corner grounded service, or wye with a
fully-insulated neutral. For more information please refer to Solectria’s application note on this topic:
Interconnection Guidelines for Yaskawa Solectria Solar XGI 1000 and XGI 1500 Inverters.
Procedure to Isolate Neutral
:
1. Remove neutral lug
2. Slip M6 spacer over stud
3. Screw insulating standoff onto stud
4. Screw Neutral lug onto spacer with M6 screw
WYE with Floating Ground
Delta with Floating Ground
Delta with Corner Ground