Installation Manual
H3C S7500E Series Ethernet Switches
Chapter 2 Installation Preparations
2-5
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Keep the switch far away from the radio launcher, radar launcher, and
high-frequency devices working in high currents.
If necessary, adopt electromagnetic shield.
2.2.4 Grounding Requirements
A good grounding system is the basis for a switch to work stably and reliably and the
important guarantee of lightning protection, anti-interference and ESD. A user should
provide good grounding system for the switch and the grounding resistance should be
less than 1.5 ohm.
2.2.5 Power Supply Requirements
For the power supply requirements, refer to section 1.2.3 “Power Supply System” in
Chapter 1 “Product Overview”.
2.3 Installation Planning
Since the S7500E series are a kind of complex equipment, it is necessary to make a
good plan and arrangement concerning installation position, networking mode, power
supply and cabling before installation.
2.3.1 Installation Space Requirement
For better heat dissipation and equipment maintenance, it is recommended that the
front and back of the switch should be at least one meter away from walls or other
devices, and that the left and right of the switch should be at least 0.8 meters away from
walls. If a rack is to be installed, the headroom should be 3 meters at least.
If the above-mentioned requirements are not satisfied, it will be very inconvenient to
install a rack or install air filters on the switch.
2.3.2 Rack-Mounting Requirements
Before rack-mounting a switch, make sure the rack meets the following requirements:
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Better mount a switch in an open rack. However, if you mount a switch in a closed
rack, make sure of good heat dissipation system.
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Make sure the rack stands steadily enough to well support the switch and
accessories.
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Make sure that the switch fits the rack size. Leave some spaces beside the left and
right panels of the switch for chassis heat dissipation.