Hitachi, Ltd.

Koichi Nakano

Shumpei Kawasaki

Takashi Omori

Yoshiaki Inami

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.

Switchgear and receiving transformation apparatus using the same

A data processor includes first and second microprocessors. The first microprocessor is provided with an external terminal and is additionally fed with an instruction for checking whether a signal fed to that external terminal satisfies a predetermined condition or not thereby to instruct a branching operation if the predetermined condition is satisfied. As a result, the external status of the first microprocessor can be checked. The second microprocessor is provided with an external terminal and is additionally fed with an instruction for checking whether or not the internal status of the second microprocessor satisfies a predetermined condition and supplies the result of the checking operation to the outside of the second microprocessor through the external terminal. As a result the internal status of the second microprocessor can be judged from the outside. The second microprocessor is assigned an arithmetic function. The external terminals attached to the first and second processors are connected to each other. The result of the arithmetic operation conducted in the second microprocessor is fed through the external terminal to the external terminal of the first microprocessor so that the processings including the arithmetic operations can be executed at a high speed.

Microprocessor for supplying branch condition indicating signal in

A data processor includes first and second microprocessors. The first microprocessor is provided with an external terminal and is additionally fed with an instruction for checking whether a signal fed to that external terminal satisfies a predetermined condition or not thereby to instruct a branching operation if the predetermined condition is satisfied. As a result, the external status of the first microcompressor can be checked. The second microprocessor is provided with an external terminal and is additionally fed with an instruction for checking whether or not the internal status of the second microprocessor satisfies a predetermined condition and supplies the result of the checking operation to the outside of the second microprocessor through the external terminal. As a result the internal status of the second microprocessor can be judged from the outside. The second microprocessor is assigned an arithmetic function. The external terminals attached to the first and second processors are connected to each other. The result of the arithmetic operation conducted in the second microprocessor is fed through the external terminal to the external terminal of the first microprocessor so that the processings including the arithmetic operations can be executed at a high speed.

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Kodaira, Japan

Koichi Nakano