Huawei PDU8000 User Manual page 134

PDU8000 Modular Precision PDC
User Manual (FusionModule2000 V2.0)
Alarm
Name
Abnormal
board power
supply
Main input
open phase
Main input
outage
Main input
CT reverse
connect
Main input
breaker
tripping
Main input
overvoltage
Issue 02 (2017-02-24)
Alarm
Impact
Severity
Major The voltage of a
power input to
the detection
board is less than
9.5 V.
Critical A phase of the
input power has
no voltage or has
a voltage lower
than the threshold
(0–60 V).
Critical The input power
has three open
phases.
The common
Major
polarity terminal
and common
terminal on a
phase current
transformer of a
mains phase are
reversely
connected.
Critical The mains switch
has tripped.
Critical Input
overvoltage:
Input voltage V >
1.2 x Rated
voltage (Multiple:
1.05–1.25;
confirmation
time: 2–10s).
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8 Maintenance Guide
Possible
Solutions
Cause
N/A Replace the
monitoring board by
referring to
Replacing the
Monitoring
The input Check the input power.
power supply
is faulty.
The input Check the input power.
power supply
is faulty.
Switch cables
N/A
connected to the
common polarity
terminal and common
terminal.
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.
The back-end Check whether the
is back-end current is
short-circuited short-circuited or
or experiences experiences
overcurrent. overcurrent.
The input Check the input power.
power supply
is faulty.
8.5.5
Board.
Figure 8-1
127