Common Faults And Troubleshooting; Appendix 1: Grid Codes (Sun2000-50Ktl); Appendix 2: Grid Codes (Sun2000-50Ktl-C1) - Huawei SUN2000 Quick Manual

8 8

Common Faults and Troubleshooting

Symptom Possible Cause
String Reverse The PV string cables are
connected reversely
during the SUN2000
installation.

Appendix 1: Grid Codes (SUN2000-50KTL)

No. Grid Code
1 CHINA-MV480
3 KOREA-MV480

Appendix 2: Grid Codes (SUN2000-50KTL-C1)

No. Grid Code
1 CHINA_MV500
Grid codes are subject to change. The listed codes are for your reference only.
Suggestion
Wait until the solar irradiance declines at night and the
PV string current reduces to below 0.5 A. Then, turn off
the two DC switches, remove the positive and negative
connectors, and correct the polarity of the DC input
power cable.
Description
China medium-voltage
power grid (480 V)
South Korea medium-
voltage power grid (480
V)
Description
China medium-voltage
power grid (500 V)
No. Grid Code
IEC61727-
2
MV480
ABNT NBR
4
16149_MV480
No. Grid Code
IEC61727-50
2
Hz-MV500
14
Description
IEC61727 medium-
voltage power grid (50
Hz)
Brazil medium-voltage
power grid (480 V)
Description
India medium-voltage
power grid (500 V)