Manual for POLIM®-D

The POLIM®-D surge arrester is designed for high- and medium-voltage applications to protect equipment from overvoltages caused by lightning or switching operations. It features a non-linear resistance property due to metal-oxide (MO) resistors, entering a highly-conductive state during overvoltage to limit the surge to specified residual voltage values. It is constructed with a fiberglass-reinforced plastic core and a directly molded silicone housing for environmental protection. An optional disconnecting device can be integrated to disconnect the arrester from the network if overloaded or destroyed. It is suitable for protecting transformers, cables, and other medium-voltage apparatuses. The manual covers safety, description, transportation, unpacking, storage, commissioning, maintenance, and disposal.