H3C S3100V2 Series Installation Manual

Also see for S3100V2 Series: Installation, quick start

Contents

11• Keep the switch far away from high-power radio launchers, radars, and equipment with highfrequency or high current.• Use electromagnetic shielding, for example, shielded interface cables, when necessary.• Route interface cables only indoors to prevent signal ports from getting damaged by over-voltageor over-current caused by lightning strikes.Grounding requirementsUsing a good grounding system to protect your switch against lightning shocks, interferences, and ESDis essential to the operating reliability of your switch. Make sure that the resistance between the chassisand ground is less than 1.5 ohm. For more information about grounding the S3100V2 Switch Series, see“Grounding the switch.”Cooling requirementsThe cooling system of the S3100V2 Switch Series varies by the switch model:• S3100V2-TP-SI/S3100V2-TP-EI (fanless): There are openings on the left, right, and rear of the switchfor natural heat dissipation.• S3100V2-TP-PWR-EI (built-in fans): Fans blow air from the left to the right of the chassis for heatdissipation, as shown in Figure 15.Figure 15 Airflow through the S3100V2-TP-PWR-EI switch(1) Air intake (2) Air exhaustFor adequate heat dissipation, plan the installation site according to the airflow of your switch, andadhere to the following requirements:• Leave a clearance of at least 10 cm (3.94 in) around the air intake and exhaust vents.• Consider the heat dissipation of the installation site when determining air-conditioningrequirements to ensure that cool air can enter the switch.• Make sure the hot air generated by equipment at the bottom of the rack is not drawn in the intakeof the equipment above.• The installation site has a good cooling system.Space requirementsFor adequate ventilation and ease of maintenance, adhere to the following requirements:• The clearance between the rack and walls or other devices is at least 1 m (3.28 ft).• The headroom in the equipment room is no less than 3 m (9.84 ft).