Rectifying Common Faults; Ac Failure - Huawei TP48200A-DT19D1 Telecom Power User Manual

TP48200A-DT19D1 Telecom Power
User Manual
Maintenance
Item
TEC
Electricity
Preventive
maintenance
Exterior
Grounding

4.2 Rectifying Common Faults

4.2.1 AC Failure

Possible Causes



Measures
1.
2.
3.
Issue 03 (2019-11-15)
Check Whether
The TEC works
properly.
The output voltage
is normal.
Indicators are
normal.
The paint or
electroplated
coating on the
cabinet is intact.
The ground point
properly connects
to the equipment
room ground bar.
The AC input power cable is faulty.
The AC input circuit breaker is OFF.
The power grid is faulty.
Check whether the AC input cable is loose. If so, secure the AC input cable.
Check whether the AC input circuit breaker is OFF. If so, handle the fault which caused
the AC input circuit breaker to turn OFF and then switch on the circuit breaker.
Check whether the AC input voltage is lower than 50 V AC. If so, handle the power grid
fault.
Copyright © Huawei Technologies Co., Ltd.
Check Method
By observation or
by checking the fan
and temperature
Multimeter
By observation
By observation
By observation or
by using a
screwdriver or
wrench
Repair When
The TEC is
damaged and
cannot effectively
cool the air.
The battery low
voltage
disconnection
(BLVD) or load
low voltage
disconnection
(LLVD) voltage
exceeds the
threshold.
An alarm is
generated.
The cabinet is
damaged or
deformed.
The cable
connecting the
ground point and
the equipment room
ground bar is
damaged or loose.
4 Maintenance
Measure
Replace the TEC.
For details, see 4.2
Rectifying
Common Faults.
Repaint and repair
the shell.
Secure the ground
point or replace the
ground cable.
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