Abstract: Instead of the conventional 2-value bit code string of one-value recording (non-record is 0), the least number of types of elements are used for recording the cell numeral information and zero information and the non-record space is made to be a function code, thereby saving the data space and increasing the integration. For this, a unit module is made to be multinary cell information. Element information is expressed by a plurality of elements E1 to En composed of a basic numeral and a positive or negative multiple (including equi-multiple). An arbitrary element from E1 to En and combination of the elements serve as cell numeral information and zero information while a non-element cell (space) Bo is made to be a function code. A plurality of elements E1 to En and a combined element are made to have an intensity structure of light reflectance by hue or concentration and density.

Abstract: A gas-insulated switchgear comprises a sealed enclosure filled with an electrically insulating gas, isolators of three phases for making/breaking a main circuit, and earthing switches of the three phases for grounding the main circuit. The isolators and the earthing switches are disposed in the sealed enclosure, with the isolator of each phase including oppositely disposed stationary and movable side contacts, and a movable contact for turning on or off electrical connection between them. The earthing switch of each phase includes an earth stationary contact connected to one of the movable side conductors and an earth movable contact for connection with or disconnection from the earth stationary contact. The components of the isolators of the three phases and the components of the earthing switches of the three phases are respectively situated on two virtual planes, which are adjacent to each other and disposed substantially along a longitudinal direction of the sealed enclosure.

Abstract: In a gas insulated switchgear equipment device, at least one gas insulated main bus bar is arranged on an attachment surface and a plurality of feeder units each having one end connected to the gas insulated main bus bar and the other end connected to an insulating terminal are arranged along a longitudinal direction of the gas insulated main bus bar, thereby constituting a substation equipment device. A gas insulated bus-section-unit is arranged on a portion of the gas insulated main bus bar and has at least a circuit breaker and disconnecting switches connected to both ends of the circuit breaker, and one end of the bus-section-unit is connected to the corresponding gas insulated main bus bar and the other end of the bus-section-unit is provided with at least one external lead-out device connectable to an external connecting device.

Abstract: A gas-insulated switchgear forming a bus section unit used in substations. In a double bus scheme where non-segregated 3-phase gas-insulated buses are laid on a horizontal installation area, this invention applies to a bus structure in which sectionalized gas-insulated main buses arranged in line on the same axis are connected by the bus section unit. By the side of the sectionalized gas-insulated main buses are installed bus section circuit breakers for three phases. A shifted bus section leading from one of the sectionalized main buses is disposed above the third gas-insulated main bus which is located farther from the circuit breaker. The shifted bus section is used to connect the sectionalized main buses. This structure improves the seismic resistance of the bus section unit without increasing the installation area of the unit.