c1 drafted · lead STPxx-US-50-BE-en-14
- STPxx-US-50-BE-en-14
sec=11.1.53h=43a62103403c - STPxx-US-50-BE-en-14
sec=h626h=a3877c085030
Fault codes › SMA › Sunny Tripower X 13-30-US (STP xx-US-50)
Reports rapid shutdown failure; look at PV array disconnect switch; confirm with DC voltage measurement; do: inverter settings review, PV switch function check.
Failure modes that present as the reported condition, and the tests that tell them apart.
sec=11.1.53 h=43a62103403csec=h626 h=a3877c085030The manufacturer's own cause and corrective text is not reproduced here.
defined_inc1 drafted · lead STPxx-US-50-BE-en-14
sec=11.1.53 h=43a62103403csec=h626 h=a3877c085030reportsc2 drafted · lead Rapid shutdown failure
tbl=12.r2 h=a15113bcec60tbl=24.r2 h=7e25a82051cfsec=h435 h=0f9623b7f0ffaffectsc3 drafted · lead PV array disconnect switch
tbl=12.r2 h=a15113bcec60tbl=24.r2 h=7e25a82051cfsec=h435 h=0f9623b7f0ffdetected_byc4 drafted · lead DC voltage measurement
Standby voltage of switches per string must be below 30 V.
sec=h436 h=ab549348ae54sec=h744 h=ab549348ae54sec=h628 h=ab549348ae54review note: support check: partial - The passages say to check the switches' standby voltage is below 30 V, but they don't name DC voltage measurement…
mitigated_byc5 drafted · lead Inverter settings review
Rapid shutdown mode must match the DC disconnection unit used.
sec=h436 h=ab549348ae54sec=h744 h=ab549348ae54sec=h628 h=ab549348ae54c6 drafted · lead PV switch function check
sec=h436 h=ab549348ae54sec=h744 h=ab549348ae54sec=h628 h=ab549348ae54applies_toc7 drafted · lead Sunny Tripower X US-50
sec=11.1.53 h=43a62103403csec=h626 h=a3877c085030