Arrangement for increasing electromechanical control mechanism switch lever contacts has 2 contacts in first line closed if monitoring relay armature drops, contact in second opened if armature drops

摘要

The arrangement has a line in the monitoring circuit between a monitoring relay (1) and an axle contact (12) divided into two lines, two contacts (62,63) in series in the first line controlled by two relays (2,3), the monitoring relay driving both relays that closes the contacts if the monitoring relay armature drops and a contact (61) in the second line driven by the monitoring relay to open if the armature drops.