Huawei SUN2000-30KTL-US User Manual page 112

SUN2000-(25KTL, 30KTL)-US
User Manual
Alarm ID Alarm
Name
Issue 09 (2019-06-30)
Alarm Causes
Severity
The power grid voltage is
below the specified lower
threshold.
 Cause ID = 19
The power grid voltage has
exceeded the specified
upper threshold for 10
minutes.
 Cause ID = 26
The grid voltage is higher
than the allowable range.

Cause ID = 28
The grid voltage difference
of the three phases is large.
 Cause ID = 29
1. The power grid
experiences an outage.
2. The AC circuit is
disconnected or AC
circuit breaker is off.

Cause ID = 31/32/33
The impedance of the
output phase wire A (cause
ID = 31)/B (cause ID =
32)/C (cause ID = 33) to the
PE cable is low or
short-circuited.
Copyright © Huawei Technologies Co., Ltd.
Measures
voltage is within the acceptable
range. If no, contact the local
power operator. If yes, obtain
written permission from the local
power operator and log in to the
SUN2000 app, SmartLogger, or
NMS to change the power grid
overvoltage and undervoltage
protection thresholds.
3. If the alarm persists for a long
time, check the AC circuit
breaker and output cables of the
SUN2000.
Cause ID = 16/19/26
1. Check whether the grid-tie point
voltage is too high. If it is,
contact your local power
operator.
2. If the grid-tie point voltage is
higher than the allowable range,
change the overvoltage and
undervoltage protection points
after obtaining approval from the
local power operator.
3. Check whether the grid voltage
peak is too high.
Cause ID = 28
1. The SUN2000 monitors its
external working conditions in
real time and automatically
recovers to the normal operating
status after the fault is rectified.
2. If the alarm occurs repeatedly and
affects the normal power
generation of the power station,
contact the local power operator.
Reason ID = 29
1. Check whether the AC voltage is
normal.
2. Check whether the AC line or
circuit breaker is disconnected.
Cause ID = 31/32/33
Check the impedance of output
phase wire A (cause ID = 31)/B
(cause ID = 32)/C (cause ID = 33) to
the PE cable and locate the position
with lower impedance and resolve
the issue.
8 Maintenance
105