Mounting in the network box
● Do not use an enclosed network box and ensure that the air intake and
exhaust vents are not blocked to ensure proper heat dissipation of the ONU.
● "IP" is short for international protection. The
rst number indicates a class for
preventing the solid particle from entering the device and the second number
indicates a class for preventing water from entering the network box.
● If the network box is installed indoors or in a corridor that is free from rain, the
network box must meet the requirements of IP31 protection. ("3" means that
solid particles with diameters equal to or larger than 2.5 mm can be prevented
from entering the box. "1" means that the drips fallen vertically cannot
damage the device.)
● If the network box is installed outdoors or in a corridor that is exposed to rain,
the network box must meet the requirements of IP55 protection. ( "5" means
that the network box cannot completely prevent dust from entering, but the
amount of dust that enters the network box does not damage the device. "5"
means that the water sprayed from
dierent directions to the network box
does not damage the device.)
● The method for installing the ONU in a non-Huawei network box depends on
the network box
specications. When the ONU is installed in a non-Huawei
network box, the preceding heat dissipation space rules must be observed.
● Guide for Grounding the Network Box of TN-S and TN-C-S Power
Distribution Systems
OptiXstar B650G-8E8P3W
Quick Start 01 3 Installing the Device
Issue 01 (2022-04-07) Copyright © Huawei Technologies Co., Ltd. 8
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