| 摘要 |
The method involves loading a signaling line (1) of a fire alarm system with a line current (IL) during an operation, where the line has an end unit formed by a transient voltage suppressor (TVS) diode (3). The line current and a line voltage (UL) are monitored for detecting failures, where temporary increase takes place in the line current. A temporary reduction takes place additionally and periodically in the line current, for detecting creeping short-circuits in the line. An independent claim is also included for a device for monitoring a signaling line of a fire alarm system. |
