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Safety Instructions
2. Safety Instructions
Intended Use
The USB isolators manufactured by Wiesemann & Theis
galvanically isolate low-speed and full-speed USB connections with
different isolation voltages. The insulators prevent compensating
currents from flowing over the USB line due to potential
differences between the connected devices, which can lead to data
transmission disturbances or to the destruction of the interfaces.
For this purpose the isolators are simply inserted into the existing
USB connection.
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DANGER
The isolators described in this manual may only be used to
protect the USB interfaces. However, it is not permitted to use
the insulator to protect persons against contact with dangerous
voltages. If a safety-critical electrical isolation is required, please
contact us.
Any other use or modification of the equipment is not authorized.
Electrical safety
Please make sure there is sufficient distance between upstream
and Downstream cable, to avoid direct voltage flashovers between
the cables.
The USB-Isolator may only be used in enclosed and dry areas. The
device should not be exposed to high ambient temperatures or not
operated near heat sources. Please note the restrictions regarding
the maximum ambient temperature.
The power supply unit used to supply the respective USB-Isolator
must guarantee a safe separation of the low voltage side from the
grid in accordance with EN62368-1 and have „LPS“ characteristics.
