Samsung RRH-2WB, Installation Manual

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Mobile WiMAX/TD-LTE RRH-2WB Installation Manual/Ver.2.0
© SAMSUNG Electronics Co., Ltd. 2-33
2.6 Insulation Test
When conducting an insulation test, it is advised to set the insulation tester to DC 500 V
and the insulation value is recommend as 100 M
Ω
or higher.
1) Connect a lead of an insulation tester to the Hex.bolt for fixing the RRH-2WB.
2) Connect another lead to the anchor bolt.
3) Measure the insulation resistance by using the insulation tester.
The insulation resistance should be over 100 M
Ω
.
If the measured resistance is less than 100 M
Ω
, the value indicates the insulation failure.
Thus, check the following and perform the insulation test again.

Check if the connection between the Hex.bolt for fixing the RRH-2WB and the anchor
bolt is proper. (Note that the anchor bolts must be shielded with an insulated bushing.)

Check if the insulated bushing is damaged.

Replace the insulator (insulated bushing, bakelite, rubber pad, etc.) or parts for fixing.
Figure 2.32 Schematic Diagram for Insulation Test
Precautions for Measuring Insulation Resistance
Since a high voltage is used for measuring insulation resistance, insulation
resistance should not be measured when the system is in operation. Make sure to
only measure the insulation resistance of the appointed part. Other components
such as the system’s internal components and the unit (system frame),
components of the communication cables, units, etc. should not be measured.
Measuring Instrument
of Insulation Resistance
Anchor Bolt
Hex.bolt for Fixing the
RRH-2WB