Load Shutdown; Battery Shutdown; Battery Loop Failure - Huawei TP48200A-D17B3 Troubleshooting Manual

TP48200A-D17B3
Troubleshooting Guide

4.3.6 Load Shutdown

Possible Causes
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Solution
Step 1 Check that the load detection cable is properly connected.
Step 2 Check the position of the handle on the circuit breaker and ensure that the circuit breaker is
turned on.
Step 3 Check the contactor, for example, whether it can be opened and closed. Replace the faulty
contactor.
Step 4 Check that the PMU load shutdown voltage is set properly.
Step 5 Check whether the load power is higher than the configured PSU power. If the load power is
higher than the configured PSU power, add a PSU and set the number of PMUs. Ensure that
the load power is within the supported range.
----End

4.3.7 Battery Shutdown

Possible Causes
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Solution
Step 1 Check that the mains supply is off and that the voltage of storage batteries drops below the
specified battery shutdown voltage.
Step 2 Check that battery shutdown is allowed.
Step 3 Check battery cables or connectors. Replace faulty cables or connectors.
Step 4 Check the contactor, for example, whether it can be opened and closed. Replace the faulty
contactor.
----End

4.3.8 Battery Loop Failure

Possible Causes
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Issue 03 (2013-05-06)
The load circuit breaker is set to OFF.
The contactor is faulty.
The PMU load shutdown voltage is excessively high.
Output undervoltage occurs because the load power is greater than the configured PSU
power.
PMU battery parameters are not set properly.
The contactor is faulty.
The battery route is faulty.
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