ZXR10 T8000 Hardware Installation Guide (Cluster)
l
The whole equipment Radiated Emission (RE) meets the CISPR22 CLASS A
requirements.
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The whole equipment power interface CS meets the CISPR22 CLASS A
requirements.
For the whole equipment communication port CS, CISPR22 CLASS A requirements should
be met for non-shielded cables, while Class B requirements should be met for shielded
cables.
A.7 Lightning Protection Ground
Lightning strikes cause damages by electrostatic discharge and overvoltage.
The
high voltage generated by the intense atmospheric movement brings about strong
transient discharge through the power cable or antenna (mainly long wire) of the
electrical equipment, leading to internal breakdown of electrical components (overvoltage
damage) or fuse blow (power damage) and resulting in permanent damages to electrical
equipment. The lightning protection and grounding requirements of the equipment (room)
are important.
For the equipment room power supply, lightning protection for the AC power panel should
reach Class B. While that for the DC power distribution board should reach Class C.
Detailed lightning protection requirements for equipment room power are described in
Table A-5
.
Table A-5 Lightning Protection Requirements of Equipment Room Power
Lightning Protection Class
Class B (primary lightning
protection)
Class C (secondary lightning
protection)
Main Parameters
40 kA (8/20 us)
20 kA (8/20 s)
Lightning Protection Circuit
Location
AC power panel
DC power distribution board
For the equipment room communication interface, lightning protection for the main
distribution frame should reach Class B, as shown in
Table A-6
.
Table A-6 Lightning Protection Requirements of Equipment Room Communication
Interface
Lightning Protection Class
Class B (primary lightning protection)
Main Parameters
6000 V (10/700 us) or 5 kA (8/20 us)
Lightning Protection Circuit Location
Main Distribution Frame (
MDF
)
A-6
SJ-20110901170352-005|2011-10-15 (R2.0)
ZTE Proprietary and Confidential
Содержание ZXR10 T8000 Series
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