CPS SCA60KTL-DO/US-480 - 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 SCA50/60KTL inverters operate at 480V
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
UTILIT Y
PER CODE
OPTIONAL PER CPS
TRANSFORMER
INVERTER
L1
L2
L3
N
PE
A
C
B
PE
N
UTILIT Y
PER CODE
PER UTILITY REQ UIREMENTS
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 3-26 AC Acceptable Transformer Winding Configurations