DEHN’s Blitzductor XTU, with actiVsense technology, is a universal surge arrester that automatically adapts itself to the nominal voltage of an installation. The combined lightning current and surge arrester is designed to protect information and automation systems and can be used for all voltages in the range of 0–180 V d.c. It also continuously adapts its voltage protection level to the currently applied signal voltage and is suited for all AC applications. It is capable of carrying lightning currents up to 10 kA (10/350 μs).
In case of interference, the arresters always have an adapted, minimal residual voltage for every signal voltage. They are pluggable arresters consisting of a BXTU protection module, which contains all surge protection components and a DIN rail mountable BXT base part. The arresters have terminals for two twin wires and earth connection is provided in the base part. An uninterrupted switch contact allows the protection modules to be removed and inserted without interrupting the system operation.
The patented LifeCheck monitoring function allows for easy testing of arresters during operation, provided that the protection module is plugged in. The LifeCheck function additionally allows the user to detect arresters pre-damaged by overload. Real-time condition monitoring systems are available to read the state of the XTU unit and transmit this information to a desired location.
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