Huawei PDU8000 User Manual page 81

PDU8000 Modular Precision Power Distribution Cabinet
User Manual
No.
8
9
10
11
12
Issue 01 (2016-02-27)
Alarm Alarm
Name Severity
Main input Critical
open phase
Main input Critical
outage
Main input Major
CT reverse
connect
Main input Critical
breaker
tripping
Main input
Critical
overvoltag
e
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Possible
Impact
Cause
A phase of the The input
input power power is
has no voltage abnormal.
or has a
voltage lower
than the
threshold
(0–60 V).
The input The input
power has power is
three open abnormal.
phases.
The common N/A
polarity
terminal and
common
terminal on a
phase current
transformer of
a mains phase
are reversely
connected.
The mains The back-end
switch has is
tripped. short-circuite
d or
experiences
overcurrent.
Input The input
overvoltage: power is
Input voltage abnormal.
V > 1.2 x
Rated voltage
(Multiple:
1.05–1.25;
confirmation
time: 2–10s).
9 Operation and Maintenance
Solutions
Check the input
power.
Check the input
power.
Switch cables
connected to the
common polarity
terminal and
common terminal.
Figure 9-1 uses
dual-input as an
example to show the
cable connection for
the common polarity
terminal and
common terminal of
the current
transformer for route
I phase L1.
Check whether the
back-end current is
short-circuited or
experiences
overcurrent.
Check the input
power.
75