Method for monitoring stepping switch e.g. for regulating transformer, has acoustic surface wave sensors arranged inside stepping switch with interrogation unit for sensors positioned outside switch

摘要

A method for monitoring the operational state or operational capability of a stepping switch, in which at different points in the interior of the switch, especially in the region of the selector and/or the load changeover switch, are arranged conventional Acoustic surface wave (AOW-) sensors, in which outside the stepping switch are provided at least one query unit for RF interrogation of the AOW sensors and in which by means of at least one querying unit the physical variables and parameters within the stepping switch can be detected and evaluated. An independent claim is also included for a stepping switch.