H3C WSG1812X-PWR, Руководство по установке, Страница: 11 / 47

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Figure1-4 Installation tools
Pre-installation checklist
Table1-4 Pre-installation checklist
Item Requirements Result
Installation
site
Ventilation
•
There is a minimum clearance of 100 mm (3.94 in))
around the device for heat dissipation.
•
A good ventilation system is available at the
installation site.
Temperature 0°C to 45°C (32°F to 113°F)
Humidity 5% RH to 95% RH, noncondensing
Cleanliness
• Dust concentration ≤ 3 × 10
4
particles/m
3
•
No dust on desk within three days
ESD prevention
•
The device is reliably grounded.
•
The equipment room is dust-proof.
•
The humidity and temperature are at acceptable
levels.
•
When you install removable modules, wear an ESD
wrist strap and make sure the strap makes good skin
contact and is reliably grounded.
EMI prevention
•
Effective measures are taken for filtering interference
from the power grid.
•
The protection ground of the device is away from the
grounding facility of power equipment or lightning
protection grounding facility.
•
The device is far away from radio transmitting
stations, radar stations, and high-frequency devices.
•
Electromagnetic shielding is used as required.
Lightning
protection
•
The device is reliably grounded.
•
The AC power source is reliably grounded.
•
(Optional.) Network port lightning protectors are
installed.
•
(Optional.) A surge protected power strip is installed.
Electricity safety
•
A UPS is available.
•
The power-off switch in the equipment room is
identified and accessible so that the power can be
immediately shut off when an accident occurs.
Rack-mounting
requirements
•
The rack has a good ventilation system.
•
The rack is sturdy enough to support the weight of the
device and installation accessories.
•
The size of the rack is appropriate for the device.