OFFSET-LOCK ELECTRICAL APPARATUS FOR LINE PROTECTION

摘要

Apparatus for line protection comprising: a cutoff device (1) controlled by a handle (4) for controlling a moving contact (5) fixed to a rotary contact-holder bar (6) driving said moving contact (5) away from or towards a fixed contact (7), said handle (4) being linked to the bar (6) by way of a mechanical lock able to toggle thereby opening/closing the contacts (5, 7) following a manual action on the handle (4); a tripping device (2) comprising at least one actuator able to carry over to the lock of the cutoff device (1) an electrical fault on a line so as to make it toggle; said bar (6) being mobile in rotation about an axis X offset with respect to the median transverse plane of the casing of the apparatus, whereas said handle (4), projecting from the front facade (8) of the apparatus, is mobile according to a travel, the mid-point of which is centred with respect to the median transverse plane of the apparatus, the latter also comprising means for transforming the translational motion of the handle (4) into a rotational motion of the bar (6). This apparatus is characterized in that said transforming means consist of means of translational guidance of the handle (4) combined with means of rotational driving of an intermediate part (18) constituting, with a lever (21) mounted pivotably in the bar (6) and with restoring means (20) linking the intermediate part (18) spring to the lever (21), a knuckle-type mechanism forming the lock.