Solar Lattice

Fault codes › SMA › Sunny Boy 3.0-7.7-US (SBx.x-1SP-US-41)

SMA SB-US-41 3401

Code: 3401
Shown as: DC overvoltage > Disconnect generator
Page: 57
ID: fc:sma-sb-us-41-3401
IRI: https://solarlattice.org/kb/fc/sma-sb-us-41-3401
Status: active
Also known as: 3401, SMA 3401, DC overvoltage > Disconnect generator
Category: Inverters

Class fault drafted · lead

Production not stated

Clears after a manual reset drafted · lead

Decoded

Reports DC overvoltage; look at PV array; confirm with DC voltage measurement; do: safety isolation, string voltage margin design.

What can be behind DC overvoltage

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

Defined in

SBxx-US-1XP-41-BA-en-12 — SMA · page 57 drafted · lead
- sec=6.2.20 h=58a42ec91edb
- sec=h264 h=41676f7fb1bd

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 E002, ABB / FIMER PVS-166-175-TL E057, ABB / FIMER PVS-60-TL CODE:06, ABB / FIMER PVS-60-TL E002, ABB / FIMER PVS-60-TL E057, ABB / FIMER TRIO-20.0-27.6-TL CODE:06, ABB / FIMER TRIO-20.0-27.6-TL E002, ABB / FIMER TRIO-20.0-27.6-TL E057, ABB / FIMER UNO-DM-3.3-5.0-PLUS CODE:06, ABB / FIMER UNO-DM-3.3-5.0-PLUS E002, ABB / FIMER UNO-DM-3.3-5.0-PLUS E057, ABB / FIMER UNO-DM-6.0-PLUS CODE:06, ABB / FIMER UNO-DM-6.0-PLUS E002, ABB / FIMER UNO-DM-6.0-PLUS E057
CPS: CPS SCA25KTL-208 PV2VoltOver, CPS SCA25KTL-480 PVVoltOver, CPS SCA36KTL PV2VoltOver, CPS SCA50-100K-T Fault4040, CPS SCA50-100K-T Protect0370, CPS SCA50-100K-T Protect0420, CPS SCA50-100K-T Protect0440, CPS SCA50-100K-T Protect0800, CPS SCA50-100K-T Protect0830, CPS SCA50-100K-T Protect0860, CPS SCA50-60KTL PV2VoltOver, CPS SCH100-125KTL PVVoltOver, CPS SCH125KTL-AIO PVVoltOver, CPS SCH275KTL PVVoltOver, CPS SCH350KTL PVVoltOver
Canadian Solar: Canadian Solar 125K-T600GL02 OV-DC, Canadian Solar 125KTL-GS-E OV-DC, Canadian Solar 185-255K OV-DC01/02/03/04, Canadian Solar 23-28KTL-CT PVVoltOver, Canadian Solar 25-40K-T480GL01 OV-DC, Canadian Solar 25-40KTL-GS-FL OV-DC, Canadian Solar 50-66K-T480GL01 OV-DC, Canadian Solar 50-66KTL-GS-FL OV-DC, Canadian Solar 75-100K-T480GL02 OV-DC
Fronius: Fronius Galvo 309, Fronius Symo 309, Fronius Symo 313
Huawei: Huawei SUN2000-100KTL-USH0 2001, Huawei SUN2000-25-30KTL-US 103, Huawei SUN2000-45KTL-US-HV-D0 103
KACO new energy: KACO new energy blueplanet TL3 118, KACO new energy blueplanet TL3 119, KACO new energy blueplanet TL3 38, KACO new energy blueplanet TL3 60
SMA: SMA SB-US-40 3401-3407, SMA SB-US-41 3402, SMA SB-US-41 3407, SMA SBSE-US-50 3401, SMA SBSE-US-50 3402, SMA SBSE-US-50 3407, SMA SBSE-US-50 3410, SMA SBSE-US-50 3411, SMA CORE1-US 3401, SMA CORE1-US 3402, SMA CORE1-US 3404, SMA CORE1-US 3407, SMA CORE1-US 3410, SMA CORE1-US 3411, SMA CORE1-US 3412, SMA STP-TL-US 3401-3402, SMA SC-CP-XT 3403, SMA SC-CP-XT 3404, SMA SC-CP-XT 3406, SMA SI-US W853, SMA SI-US W863, SMA SI-US W873, SMA SI-US W883
Schneider Electric: Schneider Electric CL125 040
Solis: Solis 1P-4G-US OV-DC, Solis 3P-5G-US OV-DC01/02/03/04, Solis RHI-1P-HV OV-DC01/02/03/04, Solis S5-GC OV-DC, Solis S6-EH1P OV-DC01/02/03/04, Solis S6-EH2P OV-DC01, Solis S6-EH2P OV-DC02, Solis S6-EH3P30-60K OV-DC01, Solis S6-EH3P30-60K OV-DC02, Solis S6-EH3P75-150K OV-DC01, Solis S6-EH3P75-150K OV-DC02, Solis S6-GC OV-DC, Solis S6-GU OV-DC
Yaskawa Solectria: Yaskawa Solectria PVI-14-20TL PV1 (2) VoltOver, Yaskawa Solectria PVI-25TL-R PVVoltOver, Yaskawa Solectria PVI-TL PV1 (2) VoltOver, Yaskawa Solectria SGI-XTM DC Volt High

Same code in other families

Claims

`defined_in`

c1 drafted · lead SBxx-US-1XP-41-BA-en-12

SBxx-US-1XP-41-BA-en-12 sec=6.2.20 h=58a42ec91edb
SBxx-US-1XP-41-BA-en-12 sec=h264 h=41676f7fb1bd

`reports`

c2 drafted · lead DC overvoltage

STP33-62-US-41 ops manual sec=h175 h=587cea85589b
STP33-62-US-41-BA-en-14 sec=h260 h=587cea85589b
SBxx-US-1XP-41-BA-en-12 sec=h264 h=41676f7fb1bd
SBxx-US-1XP-41-BA-en-12 sec=h265 h=f9c84c143221
SBSExx-US-50-BE-en-11 sec=h533 h=7acd25259cf5
SBSExx-US-50-BE-en-11 sec=h534 h=55dc6331d266

`affects`

c3 drafted · lead PV array

STP33-62-US-41-BA-en-13 sec=h259 h=5bf6ccea6e5e
STP33-62-US-41 ops manual sec=h176 h=5bf6ccea6e5e
STP33-62-US-41-BA-en-14 sec=h261 h=5bf6ccea6e5e
SBxx-US-1XP-41-BA-en-12 sec=h266 h=33b43893fe4d
SBSExx-US-50-BE-en-11 sec=h535 h=b3b29436b48d

`detected_by`

c4 drafted · lead DC voltage measurement

STP33-62-US-41-BA-en-13 sec=h259 h=5bf6ccea6e5e
STP33-62-US-41 ops manual sec=h176 h=5bf6ccea6e5e
STP33-62-US-41-BA-en-14 sec=h261 h=5bf6ccea6e5e
SBxx-US-1XP-41-BA-en-12 sec=h266 h=33b43893fe4d
SBSExx-US-50-BE-en-11 sec=h535 h=b3b29436b48d

review note: support check: partial - Corrective steps compare DC voltage with max input voltage, but detection method isn't explicitly stated.

`mitigated_by`

c5 drafted · lead Safety isolation

STP33-62-US-41-BA-en-13 sec=h259 h=5bf6ccea6e5e
STP33-62-US-41 ops manual sec=h176 h=5bf6ccea6e5e
STP33-62-US-41-BA-en-14 sec=h261 h=5bf6ccea6e5e
SBxx-US-1XP-41-BA-en-12 sec=h266 h=33b43893fe4d
SBSExx-US-50-BE-en-11 sec=h535 h=b3b29436b48d

c6 drafted · lead String voltage margin design

When DC voltage exceeds the maximum inverter input voltage.

STP33-62-US-41-BA-en-13 sec=h259 h=5bf6ccea6e5e
STP33-62-US-41 ops manual sec=h176 h=5bf6ccea6e5e
STP33-62-US-41-BA-en-14 sec=h261 h=5bf6ccea6e5e
SBxx-US-1XP-41-BA-en-12 sec=h266 h=33b43893fe4d
SBSExx-US-50-BE-en-11 sec=h535 h=b3b29436b48d

`has_event_class`

c7 drafted · lead Fault (device stops or needs intervention)

Overvoltage can destroy the inverter; immediate intervention required.

STP33-62-US-41 ops manual sec=h175 h=587cea85589b
STP33-62-US-41-BA-en-14 sec=h260 h=587cea85589b
SBxx-US-1XP-41-BA-en-12 sec=h265 h=f9c84c143221

review note: support check: partial - Disconnect/destroy language implies a fault needing intervention, but 'Fault' classification isn't explicitly stated.

`has_recovery`

c8 drafted · lead Manual reset (operator restarts or acknowledges)

Operator disconnects and reconnects DC after voltage check; service if the message repeats frequently.

STP33-62-US-41-BA-en-13 sec=h259 h=5bf6ccea6e5e
STP33-62-US-41 ops manual sec=h176 h=5bf6ccea6e5e
STP33-62-US-41-BA-en-14 sec=h261 h=5bf6ccea6e5e

review note: support check: partial - Operator disconnect/reconnect and service steps are present, but passages don't state that it clears by manual reset.

`applies_to`

c9 drafted · lead Sunny Boy 3.0-7.7-US-41 proposed

SBxx-US-1XP-41-BA-en-12 sec=6.2.20 h=58a42ec91edb
SBxx-US-1XP-41-BA-en-12 sec=h264 h=41676f7fb1bd

Data