Patent ID: 11899441
Assignee: SIEMENS AKTIENGESELLSCHAFT
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 4:
5. A device for calculating a remaining lifetime of a switch including a circuit breaker that performs a first switching process generally assignable to regular operation and a second switching process generally assignable to a protective function, comprising a short circuit switching, comprising:
at least one processor connected to the switch and configured to
receive detected switching events relevant to the lifetime of the switch from at least one sensor of the switch, where switching events of the second switching process are detected via at least one sensor of the switch;
evaluate the switching events detected, relevant to the lifetime of the switch, with respect to a frequency of an occurrence of the switching events;
detect switching events of the switch, according to the first switching process, the first switching process having been turned on, and the second switching process, the second switching process having been turned on, as switching events relevant to the lifetime of the switch;
determine a current state of aging of the switch, wherein previously detected switching events relevant to the lifetime of the switch are taken into account for calculating of the current state of aging of the switch, irrespective of the frequency of the occurrence of the switching events;
determine a current state of aging of the switch, wherein switching events according to the first switching process and second switching process are taken into account in the determining of the current state of aging of the switch;
calculate the remaining lifetime of the switch based on the determined current state of aging of the switch, wherein future switching events according to the first switching process are taken into account, and future switching events according to the second switching process are not taken into account, in the calculating of the remaining lifetime of the switch; and
provide the calculated remaining lifetime information to users or maintenance personnel.