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    • 6. 发明专利
    • GAS INSULATED SWITCHGEAR
    • JPH07123546A
    • 1995-05-12
    • JP26333393
    • 1993-10-21
    • HITACHI LTD
    • YAMAMOTO TOSHIOTAKAHOSHI MASAHIROITO SHUNJINAKANO KOICHIKIKUCHI TAKEHIRO
    • H02B13/02H01H33/42H02B13/065
    • PURPOSE:To reduce the size of an enclosure for a circuit breaker by housing a current transformer through an insulation spacer in a dedicated enclosure, disposing an enclosure housing the ground switches at the opposite ends of an interrupting section on one end face of the enclosure for circuit breaker, and setting the operating direction of the mover in the ground switch in parallel with that of the mover at the interrupting section. CONSTITUTION:A current transformer 7 is housed through an insulating spacer 15 in an enclosure dedicated for a circuit breaker. An enclosure 25 housing the ground switches 5a, 8a at the opposite ends of an interrupting section in parallel is disposed on one end face of the enclosure 16 for the circuit breaker. The operating direction of mover in the ground switch 5a, 8a is set in parallel with that of mover at the interrupting section. A switch control box 14 is disposed on the base 18 of gas insulated switchgear thus reducing the height and size of the enclosure 16 for the circuit breaker. This structure enhances the measurement accuracy of current transformer and reducing the installation space thus enhancing the maintenance and inspection performance.
    • 8. 发明专利
    • GAS-INSULATED SWITCHGEAR
    • JPH01231612A
    • 1989-09-14
    • JP5610988
    • 1988-03-11
    • HITACHI LTD
    • SUZUYAMA HIROSHISUZUKI YOSHIROKIKUCHI TAKEHIROSAKAGUCHI MINORU
    • H02B13/02H02B5/06
    • PURPOSE:To obtain a device capable of facilitating the connection between separately provided or expanded substation facilities and the renewal of the facilities, by making use of a bus section unit provided to a part of a gas- insulated main bus bar. CONSTITUTION:Each substation facilities A and B between gas-insulated main bus bars 1A and 1B is connected to disconnectors 8a and 8b, a bus section unit S1 equipped with a breaker 9, external drawing means 10A and 10B, an external connecting means 11 and an auxiliary main bus bar 12. Similarly, between the other gas-insulated main bus bars 2A and 2B the substation facilities A and B are connected by a bus section unit S2 and an auxiliary bus unit C. In case the substation facilities A or B stop, breakers 4 and 9 of the bus section units S1 and S2 are actuated and disconnectors 3a, 3b, 8a and 8b are opened to enable the other substation facilities A or B to perform individual operation. The bus section units S1 and S2 and the auxiliary bus unit C are positioned at the end of each substation facilities A and B.