SWITCH DEVICE FOR OPERATING AT LEAST ONE LOAD

摘要

The invention relates to a switch device (1) for operating at least one load, comprising at least one switch unit (7; 8; 9) which switches a tapped current phase (L) to a load (2-1; 2-2; 2-3) that can be connected to the switch unit (7; 8; 9) for the current supply thereof, and which has a measuring unit (7C; 8C; 9C) that measures a current phase progression of the at least one current phase (L); a local control unit (18) which, after obtaining a control command from an external controller (24), controls a semiconductor switch (7B; 8B; 9B) of the switch unit (7; 8; 9) in such a way that the semiconductor switch (7B; 8B; 9B) switches the current phase (L) measured by the measuring unit (7C; 8C; 9C), in the event of a zero-crossing; and a local monitoring unit (20) which evaluates the current phase progression of the at least one current phase (L) measured by the measuring unit (7C; 8C; 9C) for the detection of an operating deviation from a normal current supply of the respective load (2-1; 2-2; 2-3) connected to the switch unit (7; 8; 9), and which reports a detected operating deviation.