An overcurrent tripping device includes a tripping conductor connected to the main circuit; a fixed core inside which the tripping conductor penetrates and which is excited by current flowing through the tripping conductor; a movable core which is arranged to be opposed to the fixed core with a magnetic gap therebetween, and which forms a magnetic circuit in cooperation with the fixed core, and moves by being attracted by the fixed core when overcurrent flows through the tripping conductor; and a shaft fixed to the movable core to guide the movement of the movable core, and linked to the tripping mechanism of the circuit breaker, wherein the fixed core has a narrow gap formed in such a direction as to cross the magnetic circuit, so that magnetic saturation is suppressed by the narrow gap.

A force amplification module is disclosed for an electrical switching device, in particular a circuit-breaker, that is designed to amplify the release force of a shunt release which is designed to switch off the electrical switching device. A unit including a shunt release and the force amplification module for an electrical switching device is also disclosed, as well as an electrical switching device.

A force amplification module is disclosed for an electrical switching device, in particular a circuit-breaker, that is designed to amplify the release force of a shunt release which is designed to switch off the electrical switching device. A unit including a shunt release and the force amplification module for an electrical switching device is also disclosed, as well as an electrical switching device.

An actuator for a high-speed switch is proposed. The actuator can include a frame having multiple mounting plates and columns. The mounting plates have parts installed thereon or movably supported thereby. The columns maintain the space between the mounting plates. A permanent magnet is installed on one of the mounting plates so as to face the second driving plate, and an elastic member is installed on the mounting plate that faces the mounting plate having the permanent magnet installed thereon, so as to provide force for the movement of the second driving plate.

Circuit breakers may perform a variety of operations, including isolating a faulty part of the power system that may result in a cascading outage. However, circuit breaker operations may cause wear and tear of the tripping assembly components, which eventually cause the circuit breaker to wear out. Additionally, long periods of non-operations may cause the mechanical parts inside a circuit breaker to move sluggishly or, in some instances, fail to move at all. In an embodiment, a system includes a circuit breaker that trips to control power flow and an intelligent electronic device (IED) including an electronic display. The IED receives measurement data associated with a trip event for the circuit breaker, generates a current profile based on the measurement data, and presents the current profile via the electronic display.

Circuit breakers may perform a variety of operations, including isolating a faulty part of the power system that may result in a cascading outage. However, circuit breaker operations may cause wear and tear of the tripping assembly components, which eventually cause the circuit breaker to wear out. Additionally, long periods of non-operations may cause the mechanical parts inside a circuit breaker to move sluggishly or, in some instances, fail to move at all. In an embodiment, a system includes a circuit breaker that trips to control power flow and an intelligent electronic device (IED) including an electronic display. The IED receives measurement data associated with a trip event for the circuit breaker, generates a current profile based on the measurement data, and presents the current profile via the electronic display.

An overcurrent tripping device includes a tripping conductor connected to the main circuit; a fixed core inside which the tripping conductor penetrates and which is excited by current flowing through the tripping conductor; a movable core which is arranged to be opposed to the fixed core with a magnetic gap therebetween, and which forms a magnetic circuit in cooperation with the fixed core, and moves by being attracted by the fixed core when overcurrent flows through the tripping conductor; and a shaft fixed to the movable core to guide the movement of the movable core, and linked to the tripping mechanism of the circuit breaker, wherein the fixed core has a narrow gap formed in such a direction as to cross the magnetic circuit, so that magnetic saturation is suppressed by the narrow gap.

Provided is an actuator for a high-speed switch. The frame of the actuator is formed by a frame, and the frame consists of multiple mounting plates and columns. The mounting plates have parts installed thereon or movably supported thereby. The columns maintain the space between the mounting plates. A driving unit is installed so as to pass through a part of the mounting plates, and the driving unit is provided with a first driving plate and a second driving plate on a driving shaft. A first coil unit is provided on the mounting plate so as to face the first driving plate and generates the movement of the first driving plate at the time of an opening operation. A permanent magnet is installed on one of the mounting plates so as to face the second driving plate, and an elastic member is installed on the mounting plate that faces the mounting plate having the permanent magnet installed thereon, so as to provide force for the movement of the second driving plate.

Circuit breakers may perform a variety of operations, including isolating a faulty part of the power system that may result in a cascading outage. However, circuit breaker operations may cause wear and tear of the tripping assembly components, which eventually cause the circuit breaker to wear out. Additionally, long periods of non-operations may cause the mechanical parts inside a circuit breaker to move sluggishly or, in some instances, fail to move at all. In an embodiment, a system includes a circuit breaker that trips to control power flow and an intelligent electronic device (IED) including an electronic display. The IED receives measurement data associated with a trip event for the circuit breaker, generates a current profile based on the measurement data, and presents the current profile via the electronic display.

Circuit breakers may perform a variety of operations, including isolating a faulty part of the power system that may result in a cascading outage. However, circuit breaker operations may cause wear and tear of the tripping assembly components, which eventually cause the circuit breaker to wear out. Additionally, long periods of non-operations may cause the mechanical parts inside a circuit breaker to move sluggishly or, in some instances, fail to move at all. In an embodiment, a system includes a circuit breaker that trips to control power flow and an intelligent electronic device (IED) including an electronic display. The IED receives measurement data associated with a trip event for the circuit breaker, generates a current profile based on the measurement data, and presents the current profile via the electronic display.