GUID-F5C190C6-50AB-4F6B-B838-71C701B55AC6 V1 ENFigure 13: Travel time measurement for open operationGUID-3814AA73-1F7B-496E-B9E8-C8D897E05A94 V1 ENFigure 14: Travel time measurement for close operation4.3.2 Disconnector actuator motor overload protectionWith an optional Hall effect sensor, the device is able to measure the load current thatflows through the actuator during the control operation of the disconnector. Thiscurrent measurement is effectively used to detect an abnormality in the mechanicalmotion, when the lever that operates the disconnector moves from one end position tothe other (for example, from Open to Close). A slip in the mechanical gear unit or amechanically stiff operation, due to insufficient lubrication or deviation in operationtube positioning, can cause an overload situation which may be harmful to the actuatormotor if no action is taken to prevent overloading.Even if MCB’s are used as an overload protection, they are not optimal from themaintenance point of view, as they require a site visit because the resetting is typicallySection 4 1MRS758459 CFunctional description28 ARC600User Manual
