H3C SE-S5130 Series, Installation Manual, Page: 8 / 29

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Item Requirements
Anti-moisture
CAUTION:
Water or moisture might damage the circuits of the device.
•
Do not place the device near water or in a damp environment.
•
Install the switch in a clean, dry, and ventilated place where
temperature is controlled in a stable range.
•
Make sure the installation environment is free from water leakage or
condensation. If required, install a dehumidification device (such as
an air conditioner with a dehumidification function or a dedicated
dehumidifier).
•
Do not operate the device under or near the water source, such as
the wash basin, laundry room, or areas with high humidity.
•
Do not touch the device with wet hands.
Temperature/humidity
For correct operation and long service life of your switch, maintain the
temperature and humidity in the equipment room at acceptable ranges.
•
Lasting high relative humidity can cause poor insulation, electricity
leakage, mechanical property change of materials, and metal
corrosion.
•
Lasting low relative humidity can cause washer contraction and
ESD and cause issues including loose mounting screws and circuit
failure.
•
High temperature can accelerate the aging of insulation materials
and significantly lower the reliability and lifespan of the switch.
For the temperature and humidity requirements of the switch, see
technical specifications in
SE-S5130 Switch Series Hardware
Information and Specifications .
Lightning protection
CAUTION:
Ground the switch correctly and verify the grounding. For more
information, see "
Grounding the switch ."
•
If you ground the switch by using a grounding strip, make sure the
grounding resistance of the grounding strip in the equipment room is
less than 1
Ω.
•
If you ground the switch by using a grounding conductor buried in
the earth ground, make sure the grounding resistance of the
grounding conductor in the ground is less than 10
Ω
.
•
Route the signal cables along indoor walls, bury the cables in the
earth ground, or thread the cables through steel tubes. Install a
signal lightning arrester with a nominal discharge current for a
corresponding network interface.
•
Keep the signal cables far from power cords and lightning rod down
conductors.
•
As a best practice, route power cords indoors. If an AC power cord
is routed from outdoors, connect the AC power cord first to a power
lightning arrester before leading it to the AC power port on the
switch. Make sure the power lightning arrester has a nominal
discharge current and the total length of the power cord from the
power lighting arrester to the power port on the switch is less than 5
m (16.40 ft).
•
Ground the switch, rack, independent power supplies, and lightning
arresters separately.
•
You must ground optical fibers with reinforcing metal stiffener from
outdoors on an optical distribution frame (ODF) or fiber splice
enclosure.
Cable routing
CAUTION:
Do not run an Ethernet cable and power cord in parallel.