H3C WSG1840X Installation Manual page 11

Item
Humidity
Cleanliness
ESD prevention
EMI prevention
Lightning
protection
Electricity safety
Rack-mounting
requirements
•
The device is far away from any moist area and heat source.
Safety
•
precautions
You have located the emergency power switch in the equipment room.
Accessories Accessories provided with the device are available.
•
Documents shipped with the device are available.
Reference
•
Online documents are available.
Requirements
5% RH to 95% RH, noncondensing
• Dust concentration ≤ 3 × 10
•
No dust on desk within three days
•
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.
•
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.
•
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.
•
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.
•
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.
•
The front and rear of the rack are a minimum of 0.8 m
(31.50 in) away from walls or other devices.
6
4 3
particles/m
Result