Huawei NetEngine80E Installation Manual page 18

HUAWEI NetEngine80E Router
Installation Guide
Checking the Grounding of the Device
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Checking the Grounding of the Signal Cable
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2.2.5 Checking the Other Facilities
After checking the structure, condition, power supply, and grounding of the equipment room,
check the other facilities of the installation site.
Check the other facilities as follows:
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2.3 Unpacking and Checking the Products
This topic describes the procedure and precaution for unpacking and checking the products after
the engineering is started.
Issue 02 (2011-09-10)
NOTE
l If only one protection grounding bar is provided in the equipment room, the protection grounding
cable and working grounding cable of the communication power device must be connected to
this grounding bar.
l If two grounding bars are provided in the equipment room, namely, a protection grounding bar
and a working grounding bar, the protection grounding cable and working grounding cable of
the communication power device must be connected to the corresponding grounding bar. The
protection grounding bar and working grounding bar must share one set of grounding body.
Protection grounding must be implemented on the communication devices and the related
accessory devices (mobile base station, switch, and power device) in the equipment room.
The protection grounding cables of various devices in the communication office (site) must
be finally connected to the total grounding bar.
The -48 V (or +24 V) power cable and the RTN cable that are led out from the power input
terminals of the device must be connected to the -48 V (or +24 V) busbar and the RTN
busbar of the PDU that is provided and used by the customer.
The protection grounding cable that is led out from the total grounding terminal of the
device must be connected to the nearest protection grounding bar that is provided and used
by the customer.
Use the shielded cable or the cable with metal jacket as the signal cable that is led in to or
led out from the site. The same is recommended strongly. The free line in the cable must
be grounded inside the equipment room.
The shielded layer, metal jacket or metal tube of the cable that is led in to the site must be
connected to the nearest protection grounding bar of the equipment room.
Ensure that the maintenance and monitoring room is neat and clean. It should not be piled
with sundries.
Use an ESD PC workbench. Install the PC workbench in a correct position. The same should
comply with the plan view of the equipment room.
The maintenance terminal and the accessory devices must be correctly identified and be
intact. The installation positions of these devices must comply with the design
requirements.
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2 Preparing for the Installation
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