Hirschmann BAT 11b, Management Manual

Page: 11 / 128

BAT 11b
Release 1.0 03/04
2-11
Safety instructions
U
Supply voltage
The devices are designed for operation with a safety extra-low voltage.
They may only be connected to the supply voltage connections and to
the signal contact with PELV circuits or alternatively SELV circuits with
the voltage restrictions in accordance with IEC/EN 60950.
The supply voltage is electrically isolated from the housing.
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Never start operation with damaged components!
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Relevant for North America:
The subject unit is to be suppplied by a Class 2 power source
complying with the requirements of the National Electrical Code, table
11(b). If power is redundant supplied (two individual power sources)
the power sources together should comply with the requirements of
the National Electrical Code, table 11 (b).
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Relevant for North America:
Use 60/75°C or 75°C copper(CU)wire only.
U
Shielding ground
The shielding ground of the connectable twisted pair lines is connected
to the front panel as a conductor.
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Beware of possible short circuits when connecting a cable section with
conductive shielding braiding.