Huawei SUN2000 MB0 Series User Manual

Alar
m ID
Alarm
Name
Alarm
Severity
Possible
Causes
Troubleshooting
2035 Grid
volt.
Imbala
nce
Major Cause ID = 1
The dierence
between power
grid phase
voltages
exceeds the
upper
threshold.
1. If the alarm occurs
occasionally, the power grid
may be abnormal temporarily.
The inverter automatically
recovers after detecting that
the power grid becomes
normal.
2. If the alarm persists, check
whether the power grid
voltage is within the
acceptable range. If not,
contact the local power
operator.
3. If the alarm lasts for a long
time, check the AC output
power cable connection.
4. If the AC output power cable
is correctly connected, yet the
alarm persists and
aects the
energy yield of the PV plant,
contact the local power
operator.
2036
Grid
overfre
quency
Major Cause ID = 1
Power grid
exception: The
actual power
grid frequency
is higher than
the
requirements
for the local
power grid
code.
1. If the alarm occurs
occasionally, the power grid
may be abnormal temporarily.
The inverter automatically
recovers after detecting that
the power grid becomes
normal.
2. If the alarm persists, check
whether the power grid
frequency is within the
acceptable range. If not,
contact the local power
operator. If yes, modify the
grid overfrequency protection
threshold through the app,
SmartLogger, or NMS with
the consent of the local
power operator.
SUN2000-(12K-25K)-MB0 Series
User Manual 7 System Maintenance
Issue 01 (2023-04-30) Copyright © Huawei Digital Power Technologies Co., Ltd. 91

Huawei SUN2000 MB0 Series Specifications

General

Type	String Inverter
Max Input Voltage	1100 V
MPPT Voltage Range	200 V - 1000 V
Number of MPPTs	2
Max Input Current per MPPT	26 A
Rated Output Frequency	50 Hz / 60 Hz
Max Efficiency	98.6%
Operating Temperature Range	-25°C to +60°C
Protection Degree	IP65
Cooling	Natural Convection
Power Factor Adjustment Range	0.8 leading to 0.8 lagging
Cooling Method	Natural Convection
Protection Level	IP65
Model	SUN2000
Rated Output Voltage	230 V / 400 V
Humidity	0% - 100%
Communication	RS485