▪ High Protection Degree: Powder coated aluminum NEMA 4X enclosure
meets the demanding needs of both indoor and outdoor use.
▪ Intelligent Integration: Integrated DC/AC disconnect switches, and up to
15 fused string inputs eliminate the need for external DC combiner boxes,
simplifying installation and the need for DC BOS equipment. The rapid
shutdown version wireboxes have integrated the rapid shutdown PLC
transmitter, requiring no field wiring, and eliminated the negative DC fuses
in accordance with the 2017/2020 National Electric Code.
2.3 Product Protection and Functions
✓ AC output voltage and frequency monitoring
✓ Anti-islanding detection with bi-directional frequency perturbation
✓ DC input and AC output over-voltage protection
✓ DC input and AC output over-current protection
✓ DC input insulation to ground monitoring
✓ DC injection of AC output
✓ DC Arc-fault detection and circuit interruption
✓ Leakage current to ground monitoring
✓ Internal enclosure temperature monitoring
✓ IGBT power module temperature monitoring
✓ KVA overhead to enable full rated Active Power from unity PF to 0.91 PF
(Only for SCA50/60KTL)
✓ Load rejection over voltage (LROV) protection
✓ No neutral connection required - delta connection permitted with external
AC GFCI
✓ PVRSS certified rapid shutdown compliant to 2017/2020 NEC (with
RSD version wireboxes only).
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