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Fault codes › Sungrow › Sungrow SG250HX

Sungrow SG250HX 1548-1579

Code
1548-1579
Shown as
String Current Reflux
Page
97
ID
fc:sungrow-sg250hx-1548-1579
IRI
https://solarlattice.org/kb/fc/sungrow-sg250hx-1548-1579
Status
active
Also known as
1548-1579, Sungrow 1548-1579, String Current Reflux
Category
Inverters
Class not stated
Production not stated
Clears not stated

Decoded

Reports string reverse current; look at PV array; confirm with open-circuit voltage measurement; do: string configuration correction.

What can be behind String reverse current

Failure modes that present as the reported condition, and the tests that tell them apart.

Defined in

The manufacturer's own cause and corrective text is not reproduced here.

Same condition on other equipment

ABB / FIMER
ABB / FIMER PVS-166-175-TL E084, ABB / FIMER PVS-60-TL E084, ABB / FIMER UNO-DM-3.3-5.0-PLUS E084, ABB / FIMER UNO-DM-6.0-PLUS E084
CPS
CPS SCA50-100K-T Fault2000-2150, CPS SCA50-100K-T Fault3000-3070
Huawei
Huawei SUN2000-100KTL-USH0 2012
SMA
SMA SBSE-US-50 4013, SMA SBSE-US-50 4014, SMA SBSE-US-50 4015, SMA SBSE-US-50 4016, SMA SBSE-US-50 4017, SMA SC-CP-XT 4003, SMA SC-CP-XT 7901
Sungrow
Sungrow SG200HX 1548-1579, Sungrow SG350HX 1548-1579

Same code in other families

Claims

defined_in

c1 drafted · lead SG250HX-US-UEN-Ver17-202203

reports

c2 drafted · lead String reverse current

affects

c3 drafted · lead PV array

detected_by

c4 drafted · lead Open-circuit voltage measurement

Done after the string current falls below 0.5 A.

mitigated_by

c5 drafted · lead String configuration correction

Applies when a string has fewer modules than the others or is wired incorrectly.

applies_to

c6 drafted · lead Sungrow SG250HX-US

Data