Huawei NE05E Hardware Manual page 412

HUAWEI NE05E,NE08E
Hardware Guide
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Dust Resistance and Water Resistance
The protection rating of the equipment is IP20. A network cabinet installed
outdoors or in a corridor that is exposed to rain must meet the requirements of
IP55 rating protection at least. A network cabinet installed indoors or in a corridor
that is free from rain must meet the requirements of IP31 rating protection at
least.
For equipment at a customer site, it is recommended that the equipment be
stored indoors.
Issue 05 (2023-03-31)
The AC power system feeds power stably and no other devices with high
power consumption are operating. The rated voltage of the AC power system
is 220 V and the voltage on the power grid fluctuates within ±10%. After
equipment is installed, the voltage between L and N is 220 V, the voltage
between L and PE is lower than 220 V, and the voltage between N and PE is
lower than 5 V. Otherwise, electrical leakage may occur on the equipment
and the user may fall victim to electric shock.
Equipment does not face directly to windows of residential buildings. A
network cabinet is at least 5 m away from windows and an outdoor cabinet is
at least 10 m away from windows.
Equipment is not directly exposed to rainwater or near windows or doors
through which rain water may enter.
Equipment doors do not face residents or stand parallel with residents.
When equipment is installed on a wall, the equipment is at least one meter
above the ground. This distance keeps equipment beyond the reach of
residents.
The air intake vents on equipment are far away fromsources of corrosive gas
pollution. Equipment is under positive pressure, which helps block aggressive
gas. Aggressive gas may erode electronic components or PCBs.
When installed in a basement, a network cabinet should be installed in a
place unable to be flooded. In this scenario, the municipal drainage system of
the building needs to be taken into consideration.
If the first floor of the building is low-lying, do not install the equipment in
the weak-current well on the first floor or ground-mount the equipment in
the corridor.
Do not lead the cables or optical cables on the top of the network cabinet
and then downwards into the network cabinet from the side or top. In
addition, take water-proof measures for all cables led into the network
cabinet so that rainwater will not enter the network cabinet along the cables.
Cabinets have special protective equipment, such as rat guards. Ensure that
these facilities have been installed.
Cabinets have access control and environmental monitoring equipment.
Ensure that these facilities have been installed and used.
A filler panel is installed in each empty slot.
Natural cooling equipment has enough space for heat dissipation.
To prevent the air duct from being blocked, do not place any object around
the air intake or exhaust vent.
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4 Hardware Installation and Parts Replacement
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