Procedure and apparatus for protection of a data transmission ne

Electricity: electrical systems and devices – Safety and protection of systems and devices – With specific voltage responsive fault sensor

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34082516, 361 42, 364482, 364483, H02H 326, G08C 2500

Patent

active

051538083

ABSTRACT:
The protected network consists of a signal bus provided with terminal impedances and connected via impedances to the supply voltage (+VIN) and signal ground (GND), and signal devices which are connected to the bus. To protect the network, the voltages on the bus are monitored, and the bus impedance is measured by means of a test pulse. If either the measured voltages, impedance, or both are outside an allowed range, at least the supply voltage (+VIN) of the signal devices is disconnected.

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