Abstract: According to the present embodiment, an electrochemical cell stack includes a stack, an insulating plate, a metal plate, a metal pipe, and an insulating joint. The stack is a stack of electrochemical cells. The metal pipe communicates with a communication hole of the stack which allows either the anode fluid or the cathode fluid to flow into or flow from the electrochemical cells therethrough, via a first hole of the insulating plate and a second hole of the metal plate. The insulating plate is arranged on each of an upper surface and a lower surface of the stack and made of an electrically insulating material. The metal plates sandwich the insulating plates from outside. The insulating joint insulates the metal pipe and the metal plate from each other.

Abstract: A gas circuit breaker includes a hermetically-sealed container filled with an arc extinguishing gas, a fixed contact arranged within the container, a movable contact arranged to face the fixed contact and configured to move in an axial direction of the container, the movable contact capable of contacting or separating from the fixed contact, an insulating operation rod having one end connected to an end of the movable contact opposite to the fixed contact through a link at an angle of about 90 degrees with respect to the movable contact, and an actuator arranged in a substantially coaxial relationship with the insulating operation rod, the actuator including an output shaft transferring a driving force for the operation of the movable contact to the other end of the insulating operation rod.

Abstract: A gas circuit breaker includes a hermetically-sealed container filled with an arc extinguishing gas, a fixed contact arranged within the container, a movable contact arranged to face the fixed contact and configured to move in an axial direction of the container, the movable contact capable of contacting or separating from the fixed contact, an insulating operation rod having one end connected to an end of the movable contact opposite to the fixed contact through a link at an angle of about 90 degrees with respect to the movable contact, and an actuator arranged in a substantially coaxial relationship with the insulating operation rod, the actuator including an output shaft transferring a driving force for the operation of the movable contact to the other end of the insulating operation rod.