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AssigneeSiemens Aktiengesellschaft
InventorsThomas Driehorn, Gerd Müller
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A method is disclosed for testing the functionality of the electromagnetic tripping of a switch, in particular of a circuit breaker for low voltages, which has switching contacts which are opened with the aid of a tripping shaft, which is held prestressed by a switching mechanism and is unlatched by a tripping magnet which for this purpose has a winding through which a current is sent for tripping. In order to test the functionality with relatively little effort, it is proposed in at least one embodiment that the winding is connected as an inductance in a resonant circuit, the resonant frequency of the resonant circuit is detected, and the functionality of the tripping magnet is assessed on the basis of the detected resonant frequency.
A method for assessing functionality of an electromagnetic tripping of a switch including switching contacts which are openable with the aid of a tripping shaft, is the tripping shaft being held prestressed by a switching mechanism and being unlatchable by a tripping magnet which includes a winding through which a current is sent for tripping, the method comprising:
Dependencies are inferred from the claim text.