User Manual

CDMA2000 BTS SCBS-519L10 Installation Manual/Ed.01

Install a driven rod as follows:

y Connect the driven rod to the grounding cable through welding. The driven rod should

be buried more than 750 mm in depth.

y The distance between the driven rods should be twice as long as either of the driven

rods.(This is subject to change depending on circumstances.)

y Mark the date of ground measurement and earth resistance on the front of ground

terminal board in a printed format, and install a terminal for earth measurement.

y If the earth resistance does not meet the specification, use either a ground plate or a

driven rod depending on circumstances.

2.5.2.6 Grounding Test

Insulation Test of Floor and Input Power

One of the lead of the insulation measurement instrument should be connected to the

anchor bolt attached to the wheel of the rack , and the other lead should be connected to the

power input terminal(+26 V, GND) of the rack of the instrument to be measured, and test it.

The basic value should be indicated as more than 100  when measured by the 500zVDC

insulation resistance measurement instrument.

Checking when Insulation is Failed

When the result of measuring the insulation is failed, the engineer should check as below:

1) Examine whether the floor of the rack is contacted with the metal device, and also

examine the damage of the supporting rod for the rack fixing through the naked eye.

2) Measure whether to be short-circuited between the housing of the supporting rod rack

by using the insulation resistance measurement instrument.

3) Perform the test after checking.