SAFETY DEVICE Russian patent published in 2013 - IPC H02H9/04 

FIELD: electricity.

SUBSTANCE: safety device (1) comprising at least one protective element (FS, SD1, SD2) for protection of an electric system against negative impact and/or damage as a result of a fault event, and comprising a facility (2) for diagnostics to detect a functional condition of a safety device (1), depending on the case of application of the proposed protective device, has a metering device and a device for detection of fault event recognition. The metering device is designed to measure a voltage curve between the first and second point (3, 4) of measurement, besides, the metering device is arranged so that if the device for fault event recognition on the basis of a row of previously established criteria detects a fault event, then the metering device inspects, whether the voltage curve satisfies the row of previously established criteria. The safety device (1) is determined by a facility (2) of diagnostics as serviceable, if the voltage curve registered by the metering device satisfies a row of previously established criteria, and as non-serviceable, if the voltage curve registered by the metering device does not meet a row of previously established criteria.

EFFECT: reduced costs for monitoring, inspection or maintenance of considered safety devices.

8 cl, 2 dwg