Huawei Copy-SUN2000 L1 Series - Page 92

Alarm
ID
Alarm Name Alarm
Severity
Possible Causes Troubleshooting
2051 Abnormal
Residual
Current
Major Cause ID = 1
The insulation impedance
of the input side to PE
decreases when the
SUN2000 is operating.
1. If the alarm occurs
occasionally, the
external circuit may be
abnormal temporarily.
The SUN2000
automatically recovers
after the fault is
rectied.
2. If the alarm occurs
frequently or persists,
check whether the
impedance between the
PV string and the
ground is too low.
Copy-SUN2000-(2KTL-6KTL)-L1
User Manual 8 System Maintenance
Issue 06 (2022-03-10) Copyright © Huawei Technologies Co., Ltd. 85