TRANSFER SWITCH FOR TAP-CHANGING REGULATING TRANSFORMERS INCLUDING LOST MOTION INTERCONNECTION DRIVING MECHANISM

摘要

In a polyphase transfer switch for tap-changing regulating transformers the cooperating fixed and movable contacts of each phase are arranged to form a pattern in the shape of a sector of a circle. The movable current-carrying contacts are hingedly supported by the movable main contacts. Due to the presence of a lost motion connection the current-carrying contacts are separated prior to separation of the main contacts, and on account of this lost motion connection cooperating current carrying contacts are brought into engagement only after the main contacts are brought into engagement.