8
Item
Requirements
Result
the equipment room.
•
There is a minimum clearance of 1200 mm
(47.24 in) between the rack and walls or other
devices.
Ventilation
•
There is a minimum clearance of 300 mm
(11.81 in) around the inlet and outlet air vents.
•
A good ventilation system is available at the
installation site.
Power supply
•
The power supply system can output enough
power to maintain the device operation.
•
An uninterrupted power supply (UPS) is
available.
•
The power-off switch in the equipment room is
located so that the power can be immediately
shut off when an accident occurs.
Grounding
•
The grounding specifications for the
equipment room comply with national and
industry standards.
•
All communication devices in the equipment
room are reliably grounded.
•
The working earthing and protective earthing
systems of the communication power supplies
use the same earthing conductor set with the
protective earthing system of the
communication devices.
Temperature
0°C to 45°C (32°F to 113°F).
Humidity
5% RH to 95% RH (noncondensing).
Cleanliness
•
Dust concentration ≤ 3 × 104 particles/m
3
.
•
No visible dust on desk within three days.
EMI prevention
•
Take effective measures to protect the power
system from the power grid system.
•
Separate the operation ground of the gateway
from the grounding device or lightning
protection grounding device as far as
possible.
•
Keep the gateway far away from radio
stations, radar and high-frequency devices
working in high current.
•
Use electromagnetic shielding when
necessary.
Safety precautions
•
The gateway is far away from any heat source
and moist area.
•
The emergency power switch in the
equipment room is located.
Accessories
Installation accessories provided with the gateway.
Reference
•
Documents shipped with the gateway.
•
Online documents.
