H3C RA10, Руководство по установке

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4
Figure 2 Installation accessories
Pre-installation checklist
Item Requirements
Installation
site
Ventilation
•
A minimum clearance of 10 cm (3.9 in) is reserved around the air
inlet and outlet vents.
•
The installation site has a good ventilation system.
Temperature 0°C to 45°C (32°F to 113°F)
Relative humidity 5% to 90% (noncondensing)
Cleanliness
Dust concentration ≤ 3 × 10
4
particles/m
3
(no visible dust on the
tabletop over three days)
ESD prevention
•
The router and floor are reliably grounded.
•
Dust-proof measures are taken in the equipment room.
•
Humidity and temperature are maintained at acceptable levels.
•
An ESD wrist strap and ESD garment are available.
EMI prevention
•
A single-phase three-wire power receptacle with protection earth
(PE) is available for filtering interference from the power grid.
•
The router is far away from radio transmitting stations, radar
stations, and high-frequency devices.
•
Electromagnetic shielding, for example, shielded interface cables,
is used as required.
Lightning
protection
•
The router is reliably grounded.
•
The AC power receptacle is reliably grounded.
•
(Optional.) Port lightning protectors are available.
•
(Optional.) Power lightning protectors are available.
•
(Optional.) Signal cable lightning protectors are available.
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.
Workbench
•
The workbench is stable.
•
The workbench is reliably grounded.