Huawei PDU8000 Series User Manual page 130

PDU8000 Modular Precision PDC V2.0
User Manual
Alarm
Name
Main input
CT reverse
connect
Main input
breaker
tripping
Main input
overvoltage
Main input
undervoltag
e
Main input
overfrequen
cy
Issue 03 (2018-01-25)
Alarm
Impact
Severity
Major The common
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).
Critical Input
undervoltage:
Input voltage V <
0.85 x Rated
voltage (Multiple:
0.75–0.95;
confirmation
time: 2–10s).
Major The input
frequency is 1.5
Hz higher than
the configured
frequency. The
frequency setting
range is 50–60
Hz.
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8 Maintenance Guide
Possible
Solutions
Cause
N/A Switch cables
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.
The input Check the input power.
power supply
is faulty.
The input Check the input power.
power supply
is faulty.
Figure 8-1
121