Patent ID: 7777150
Filing Date: 2010-08-17
Classification: H01H,H02B

Abstract:
1. A three-pole apparatus to be installed in a cubicle of an electric substation, comprising: an air-insulated three-pole disconnector configured for performing functions of isolating an electric line leaving the cubicle, a three-pole circuit breaker configured for performing line protection functions, a casing comprised of insulating material and at least partially internally housing said three-pole circuit breaker, wherein said casing is not sealingly closed and contains air; wherein the three-pole circuit breaker comprises three vacuum circuit-breaker modules and the three-pole disconnector comprises three single-pole disconnector devices, wherein each of the single-pole disconnector devices in turn comprises a contact movable linearly from a service position into a disconnection position; wherein each of the contacts, when it is in its service position, projects at least partially from the casing; and wherein the three-pole apparatus is configured for cooperating with an earthing switch which is not enclosed into said casing.