GUID-F5C190C6-50AB-4F6B-B838-71C701B55AC6 V1 EN
Figure 13:
Travel time measurement for open operation
GUID-3814AA73-1F7B-496E-B9E8-C8D897E05A94 V1 EN
Figure 14:
Travel time measurement for close operation
4.3.2
Disconnector actuator motor overload protection
With an optional Hall effect sensor, the device is able to measure the load current that
flows through the actuator during the control operation of the disconnector. This
current measurement is effectively used to detect an abnormality in the mechanical
motion, when the lever that operates the disconnector moves from one end position to
the other (for example, from Open to Close). A slip in the mechanical gear unit or a
mechanically stiff operation, due to insufficient lubrication or deviation in operation
tube positioning, can cause an overload situation which may be harmful to the actuator
motor if no action is taken to prevent overloading.
Even if MCB’s are used as an overload protection, they are not optimal from the
maintenance point of view, as they require a site visit because the resetting is typically
Section 4
1MRS758459 C
Functional description
28
ARC600
User Manual