Huawei UPS2000-G-6KRTLL - Page 15

15
Alarm
ID
Alarm
Name
Severity
Clearance
Condition
Trigger
Condition
Impact on
the System
Suggestion
13
Phase
lock
failure
Minor
Phase
locking is
successful
or the
bypass is
missing.
The inverter fails
in phase locking
within 10s.
The system
cannot start
PFC or enter
normal
mode.
Possible cause:
The power grid
frequency is
unstable.
17
Bypass
abnorm
al
Minor
The bypass
voltage or
frequency
recovers to
the normal
range.
The bypass
voltage or
frequency is out
of the normal
range.
•
The system
cannot
transfer to
bypass mode
when a
critical alarm
is generated.
•
In bypass
mode, the
power output
is
disconnected.
•
Check that the
bypass
connection is
normal.
•
Check that the
bypass voltage
and frequency are
within their
normal ranges.
18
Low
lithium
battery
level
Minor
The battery
voltage or
SOC rises
above the
alarm
threshold.
Communication is
normal, but the
SOC is lower than
20%.
Communication is
abnormal, and
the battery
voltage falls to
47 V DC.
The battery
level is close
to the cutoff
threshold. If
there is no
mains input,
the system
will shut
down after
working for a
period of
time.
Possible cause:
The battery
charge level is
low.
Measure: Charge
the battery.
19
Abnor
mal
mains
voltage
Minor
The mains
voltage
input
recovers.
•
The mains is
disconnected or
fails.
•The mains input
voltage harmonic
exceeds 10%
(square wave
input is not
supported).
•
The mains
frequency change
rate exceeds the
phase lock rate
defined in the
specifications (2
Hz/s for a single
UPS and 1 Hz/s
for a parallel
system).
The system
cannot work
in normal
mode. If this
alarm is
generated in
normal
mode, the
system
transfers to
battery
mode.
Check whether
the mains voltage
input is normal. If
the circuit is
faulty, send the
device to the
maintenance
center.
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