Huawei DBS3900 WiMAX, Maintenance Manual

Page: 14 / 33

2.1 Maintenance of Power Supply System and Grounding
System of the BTS3702E
This section describes the maintenance tasks, maintenance frequency, operation guidance, and
reference standard of the power supply system and grounding system of the BTS3702E.
Table 2-1 lists the maintenance tasks of the power system and grounding system of the
BTS3702E.
Table 2-1 Maintenance tasks for the power supply system and grounding system of the
BTS3702E
Item Frequency Operation Standard
Power cable Monthly Carefully check the
connections of power
cables. The power cables are
not aging, and there
is no corrosion on the
joints.
Voltage Monthly Measure the voltage
of the power supply
using a multimeter. Operating voltage
range: -36 V DC to
-57 V DC.
PGND cable Monthly Check whether the
PGND cable and
ground bar are
connected securely. The joints are secure
and corrosion free.
Earth resistance Monthly Measure the earth
resistance using an
electric earth
resistance tester and
record the
measurement. The grounding
resistance is lower
than 10 ohms.
2.2 Maintenance of BTS3702E Main Equipment
The maintenance tasks of the BTS3702E equipment include checking the surface of the
equipment, cleanness of the equipment, and indicators.
Table 2-2 lists the maintenance tasks of the BTS3702E.
2 Tasks of Routine Hardware Maintenance
DBS3900 WiMAX
Site Maintenance Guide (Draft)
2-2 Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
Issue 01 (2009-11-30)