Huawei UPS2000-G-6KRTLL Quick Manual page 15

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