Huawei SUN2000 MB0 Series User Manual

Alar
m ID
Alarm
Name
Alarm
Severity
Possible
Causes
Troubleshooting
2037 Grid
underfr
equenc
y
Major Cause ID = 1
Power grid
exception: The
actual power
grid frequency
is lower 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 underfrequency
protection threshold through
the app, SmartLogger, or
NMS with the consent of the
local power operator.
2038 Unstabl
e grid
frequen
cy
Major Cause ID = 1
Power grid
exception: The
actual change
rate of the
power grid
frequency does
not meet 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.
2039 AC
Overcur
rent
Major Cause ID = 1
The power grid
voltage drops
dramatically or
the power grid
is short-
circuited. As a
result, the
inverter
transient
output current
exceeds the
upper
threshold, and
protection is
triggered.
1. The inverter monitors its
external operating conditions
in real time and automatically
recovers after the fault is
rectied.
2. If the alarm persists and
aects the energy yield of the
PV plant, check whether the
output is short-circuited. If
the fault cannot be
rectied,
contact your dealer or
Huawei technical support.
SUN2000-(12K-25K)-MB0 Series
User Manual 7 System Maintenance
Issue 01 (2023-04-30) Copyright © Huawei Digital Power Technologies Co., Ltd. 92

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