Abstract: Vertical type tank 1, in which vertical type interrupters 2 for three phases are arranged, has current transformer units 10 and 20. Main sections of current transformer 12 and 22 for three phases are respectively arranged in current transformer units 10 and 20 so that the lines connecting their centers form triangle. Current-carrying conductors 3 and 4 connected to vertical type interrupter 2 are made to pass through main section 12 and 22, respectively. Each of current-carrying conductors 3 and 4 is connected to first and second conductor members 31, 41 and 32, 42, which pass through the main section and connected severally and respectively by connection conductor members 33, 34, and 43, so that the current path on the primary of the current transformer form a two-turn winding. Connection conductor members 33, 34 and 43 of each phase are arranged in the space between main section 12 and 22.

Abstract: A switchgear having a primary circuit breaker and a secondary circuit breaker respectively arranged on the primary side and secondary side of a load switch or a voltage and current transformer for an instrument, a primary grounding switch arranged between the load switch or voltage and current transformer for an instrument and the primary circuit breaker, and a secondary grounding switch arranged between the load switch or voltage and current transformer for an instrument and the secondary circuit breaker, wherein to the primary and secondary circuit breakers and grounding switches, connection means are respectively connected so as to move the moving electrodes of the circuit breakers and grounding switches and an operation device for operating the moving electrodes in connection with each other via the connection bars is included and a receiving transformation apparatus using it.

Abstract: A switchgear having a primary circuit breaker and a secondary circuit breaker respectively arranged on the primary side and secondary side of a load switch or a voltage and current transformer for an instrument, a primary grounding switch arranged between the load switch or voltage and current transformer for an instrument and the primary circuit breaker, and a secondary grounding switch arranged between the load switch or voltage and current transformer for an instrument and the secondary circuit breaker, wherein to the primary and secondary circuit breakers and grounding switches, connection means are respectively connected so as to move the moving electrodes of the circuit breakers and grounding switches and an operation device for operating the moving electrodes in connection with each other via the connection bars is included and a receiving transformation apparatus using it.

Abstract: A switchgear wherein a connecting portion to be connected to a transmission side branch bus container and a connecting portion to be connected to a receiving side branch bus container are provided on a circuit breaker container in an up and down relation so as to face the same direction. Any one of the transmission side branch bus container and the receiving side branch bus container is connected to the connecting portion positioned on the upper side, and the other is connected to the connecting portion positioned on the lower side, and a transmission side power cable terminal container or a receiving side power cable terminal container is arranged at a position deviated horizontally from the axis of the transmission side branch bus container or the receiving side branch bus container.

Abstract: A switchgear is characterized in that a connecting portion to be connected to a transmission side branch bus container and a connecting portion to be connected to a receiving side branch bus container are provided on a circuit breaker container in an up and down relation so as to face the same direction, any one of the transmission side branch bus container and the receiving side branch bus container is connected to the connecting portion positioned on the upper side, and the other is connected to the connecting portion positioned on the lower side, and a transmission side power cable terminal container or a receiving side power cable terminal container is arranged at a position deviated horizontally from the axis of the transmission side branch bus container or the receiving side branch bus container.

Abstract: A switchgear having a primary circuit breaker and a secondary circuit breaker respectively arranged on the primary side and secondary side of a load switch or a voltage and current transformer for an instrument, a primary grounding switch arranged between the load switch or voltage and current transformer for an instrument and the primary circuit breaker, and a secondary grounding switch arranged between the load switch or voltage and current transformer for an instrument and the secondary circuit breaker, wherein to the primary and secondary circuit breakers and grounding switches, connection means are respectively connected so as to move the moving electrodes of the circuit breakers and grounding switches and an operation device for operating the moving electrodes in connection with each other via the connection bars is included and a receiving transformation apparatus using it.

Abstract: A power receiving unit is arranged in one side of an instrument potential/current unit transformer. A transformer-side unit is arranged in the other side of the instrument potential/current transformer units. A bypass bus connecting the power receiving unit and the transformer-side unit is arranged in parallel to the row of cubicles. The gas insulated switchgear can be made small in size and the work for adding a bank can be performed with substantially small man-power. The size of the gas insulated switchgear can be also prevented from increasing due to the addition of a bank.

Abstract: The present invention provides a compressed gas insulation switchgear requiring a comparatively small area for installation and facilitating installation of additional banks. According to one embodiment of the invention, potential current transformer units are disposed in the central area, power receiving units are disposed on the outer side of the potential current transformer units, transformer side units are disposed on the outer side of the power receiving units, and buses interconnecting the units are extended in parallel to a row of cubicles on an upper level and a lower level.