Allied Telesis IE340 Series, Руководство по установке, Страница: 83 / 136

Chapter 3: Installing the Switch
83
Installing the Switch in an Outdoor Environment
The switch can be installed in an outdoor environment. Before planning to
install the switch outdoors, read following requirements and precautions.
You must meet all requirements to install the switch outdoors.
Requirements for
Outdoor
Installation
Here are the requirements:
Warning
Install the switch in a UL-listed Type 3X or 4X enclosure when
installing the switch in an outdoor environment.

Follow the enclosure manufacturers installation recommendations
to maintain safety and protection from outdoor environment.

Verify that the enclosure BTU/hour rating is higher than the total
BTU/hour values of equipment installed in the enclosure over the
expected operating temperature range. For the operating
temperature ranges, see Table 16 on page 128.

The enclosure size should be determined by considering multiple
factors, such as the outside ambient temperature, total heat
generated from the installed equipment, sealed or unsealed
enclosure type, enclosure material, paint color, mounting method
(wall, pole, ground, etc.), and sun load. The smaller enclosure size
you choose, the higher risk of overheating the product faces. If the
product overheats in an enclosure that was built without taking into
account these factors, the warranty of the product might be voided.
Consult Allied Telesis when assistance is needed.
Immunity and
Precautions
The IE340 switches are suitable for industrial applications, which require
electromagnetic compatibility (EMC) standards, such as
EN 61000-6-2 for immunity and EN 61000-6-4 for interference.
The generic standard EN 61000-6-2 specifies the immunity test levels in
relation to continuous and transient conducted and radiated disturbances.
Tests within the standard include Electrostatic Discharges (ESD),
Electrical Fast Transients (EFT), surge, Power Frequency Magnetic
Fields, and power interruptions. These tests use the same detailed
measurements and test methods used for the basic standard
EN 61000-4-x series.
The equipment connected to outdoor cables may be exposed to surges,
which can damage components and circuits.
The IE340 switches satisfy the surge immunity defined by IEC 61000-4-5
test level 3 and the requirements for the installation class 3.