09Installation
Please keep a proper temperature and humidity in the equipment room. Too high/low humidity may
lead to bad insulation, electricity leakage, mechanical property changes and corrosions. Too high
temperature may accelerate aging of the insulation materials and can thus significantly shorten
the service life of the device. For normal temperature and humidity of the device, please check the
following table.
Environment Temperature Humidity
Operating 0
℃
to 40
℃
10% to 90%RH Non-condensing
Storage -40
℃
to 70
℃
5% to 90%RH Non-condensing
Clearness
The dust accumulated on the switch can be absorbed by static electricity and result in poor contact
of metal contact points. Some measures have been taken for the device to prevent static electricity,
but too strong static electricity can cause deadly damage to the electronic elements on the internal
circuit board. To avoid the effect of static electricity on the operation of the Switch, please attach
much importance to the following items:
■
Dust the device regularly, and keep the indoor air clean.
■
Keep the device well grounded and ensure static electricity has been transferred.
Electromagnetic Interference
Electronic elements including capacitance and inductance on the device can be affected by
external interferences, such as conducted emission by capacitance coupling, inductance coupling,
and impedance coupling. To decrease the interferences, please make sure to take the following
measures:
■
Use the power supply that can effectively filter interference from the power grid.
■
Keep the device far from high-frequency, strong-current devices, such as radio transmitting station.
■
Use electromagnetic shielding when necessary.
Lightening Protection
Extremely high voltage currents can be produced instantly when lightning occurs and the air in
the electric discharge path can be instantly heated up to 20,000
℃
. As this instant current is strong
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