42
When the output of the inverter is connected to the grid, an external AC
circuit breaker is required to be installed to safely disconnect the inverter
from the grid should an overcurrent event occur. The minimum size breaker
is determined by NEC calculations. The internal temperature of the AC
Panel must be considered and appropriate derate applied to prevent
nuisance tripping.
Table 3-11 Specification of AC breaker selection
Inverter
Max AC OCPD
CPS SCH100KTL-DO/US-600
200A
CPS SCH125KTL-DO/US-600
200A
CPS SCH100KTL-DO/US-480
200A
The SCH100KTL-DO/US-600 and SCH125KTL-DO/US-600 inverters
operate at 600VAC/Wye output, while the SCH100KTL-DO/US-480
inverters operate at 480VAC/Wye output. If another voltage/configuration
is required, a transformer may be necessary.
Up to 30 inverters may be connected in parallel for use with a single transformer.
NOTICE:
Transformer Configurations:
3W Wye and 4W Grounded Wye is recommended.
Floating 3W Wye 3W Delta Configuration is acceptable but required
external GFCI.
The presence of a Grounding Transformer or YG : d causes voltage
regeneration – Loss of Single Phase must be mitigated external to
Inverter due to regenerated voltage present at inverter AC terminals.
Open and Grounded Delta configurations are not acceptable.
Summary of Contents for SCH100KTL-DO-480
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Page 43: ...39 Figure 3 25 AC Output Cable Connection Distributed Wire box L1 L2 L3 ...
Page 45: ...41 Figure 3 27 AC Output Cable Connection Centralized Wire box Ver 2 ...
Page 58: ...54 Figure 4 1 System setting ...
Page 81: ...77 5 4 2 6 Others The REF column is reference to Table 5 7 Enable functions ...
