Abstract: A monitoring device for switching systems including a contact assembly having at least a movable contact and a kinematic chain for actuating said movable contact and opening/closing the contact assembly. The monitoring device includes: an accelerometer adapted to be positioned on a moving part of the switching system and capable of determining acceleration data of the moving part; a control unit including: a first processing unit adapted to receive acceleration data measured by the accelerometer and calculate timing instants of predetermined events and motion parameters related to the switching system; a second processing unit adapted to receive the timing instants of predetermined events and the motion parameters and to use at least one timing instant and at least one motion parameter to calculate electro/mechanical parameters of the switching system.

Abstract: System and method for monitoring a travel curve of moving part of circuit breaker comprising: device for optically monitoring travel path and comprising: light source; light detection device; optical element having plurality of zones with different optical properties which are alternately arranged, the optical element being provided on moving part of circuit breaker, light being intensity-modulated by the optical element and being received by light detection device during circuit breaker operation. The system further comprises an accelerometer mounted to circuit breaker, control unit for receiving signals from light detection device and from accelerometer, the control unit being configured to determine the travel curve based on the detected modulated light and on the detected vibration signal, the vibration signal being employed to identify a change of direction of movement of the moving part.

Abstract: A monitoring device for switching systems including a contact assembly having at least a movable contact and a kinematic chain for actuating said movable contact and opening/closing the contact assembly. The monitoring device includes: an accelerometer adapted to be positioned on a moving part of the switching system and capable of determining acceleration data of the moving part; a control unit including: a first processing unit adapted to receive acceleration data measured by the accelerometer and calculate timing instants of predetermined events and motion parameters related to the switching system; a second processing unit adapted to receive the timing instants of predetermined events and the motion parameters and to use at least one timing instant and at least one motion parameter to calculate electro/mechanical parameters of the switching system.

Abstract: System and method for monitoring a travel curve of moving part of circuit breaker comprising: device for optically monitoring travel path and comprising: light source; light detection device; optical element having plurality of zones with different optical properties which are alternately arranged, the optical element being provided on moving part of circuit breaker, light being intensity-modulated by the optical element and being received by light detection device during circuit breaker operation. The system further comprises an accelerometer mounted to circuit breaker, control unit for receiving signals from light detection device and from accelerometer, the control unit being configured to determine the travel curve based on the detected modulated light and on the detected vibration signal, the vibration signal being employed to identify a change of direction of movement of the moving part.