BS EN 62689-2:2017 PDF

What is BS EN 62689-2 - Current and voltage sensors or detectors for fault detection about?

BS EN 62689-2 is a safety standard on current and voltage sensors or detectors, to be used for fault passage indication purposes. BS EN 62689-2 describes electric phenomena and electric system behaviour during faults, according to the most widely diffused distribution system architecture and to fault typologies, to define the functional requirements for fault passage indicators (FPI) and distribution substation units (DSU) (including their current and/or voltage sensors), which are, respectively, a device or a device/combination of devices and/or of functions able to detect faults and provide indications about their localization. By localization of the fault, it means the fault position with respect to the FPI/DSU installation. The point on the network (upstream or downstream from the FPI/DSU’s location) or the direction of the fault current flowing through the FPI itself. The fault localization may be obtained:

Directly from the FPI/DSU From a central system using information from more FPIs or DSUs

considering the features and operating conditions of the electric system where the FPIs/DSUs are installed. BS EN 62689-2 is therefore aimed at helping users in the appropriate choice of FPIs/DSUs (or of a system based on FPI/DSU information) properly operating in their networks,...