Three-phase surge arrester type 1 Siemens PTD High Voltage

Maximum protection Siemens gas-insulated, metal-enclosed arresters (GIS arresters) provide maximum protection for gasinsulated switchgear (GIS) and transformers. The reasons are twofold: On the one hand, GIS arresters can be installed very close to the object to be protected, which is important wherever they are fed by long cables, for instance. In this way, over-voltages caused by traveling waves can effectively be minimized. On the other hand, the low self-inductance of GIS arresters provides the best conceivable protection against high rate-of-rise voltages, which are particularly critical for gas-insulated equipment.

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