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Power transformation substation

Lightning strikes on high voltage lines result in transformer loading in power transformation substations. Often surge protection elements are connected upstream of transformers. These direct the surge currents from coupled overvoltages to ground. In the past, spark gaps were normally used as protective elements. In recent years varistors have become the preferred solution.

Schematic diagram of a LM-S application using the example of a power transformation substation

Schematic diagram of a LM-S application using the example of a power transformation substation

The LM-S allows you to detect and evaluate the actual load of the protective elements. This enables early detection of load limits and replacement of affected protective elements.

The sensors are installed on the down conductors between the protective elements and the ground. Fiber optics transmit the measurement signals to the evaluation unit, which is installed in a remote control cabinet.

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