CPS SCA25KTL-DO/US-208 - AC and Ground Connection

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3.3.4 AC and Ground Connection
The following section describes the AC and ground connections.
3.3.4.1 Acceptable Transformer Configurations
The SCA25KTL-DO/US-208 inverters operate at 208V
AC
/Wye output. If
another voltage/configuration is required a transformer may be necessary.
Wye (Inverter) / DELTA (Utility)
Wye (Inverter) / WYE (Utility)
TRANSFORMER
INVERTER
L1
L2
L3
N
PE
A
C
B
PE
N
UTILITY
PER CODE
OPTIONAL PER CPS
TRANSFORMER
INVERTER
L1
L2
L3
N
PE
A
C
B
PE
N
UTILITY
PER CODE
PER UTILITY REQUIREMENTS
OPTIONAL PER CPS
NOTE: If the transformer neutral is not
connected to ground, additional ground
fault detection must be added external to
the inverter per NEC 250.21
NOTE: If the transformer neutral is not
connected to ground, additional ground
fault detection must be added external to
the inverter per NEC 250.21
In a Delta connected system, the inverter
does not detect AC Side Ground Faults.
Only DC Side Ground Fault protection is
provided by the inverter. Additional AC
ground fault detection must be added
external to the inverter per NEC 250.21.
Figure 3-255 AC Acceptable Transformer Winding Configurations