Abstract: A method, device and computer program product for providing improved control of power or voltage oscillation damping in a power transmission system. The device includes a magnitude obtaining element configured to obtain an instantaneous magnitude of a signal representing a deviating oscillation in at least one element of the power transmission system, a slope investigating element configured to determine the rate of change of the signal, and a first processing block including an integrating element configured to integrate the instantaneous magnitudes with an integrating factor that is based on the determined rate of change. The first processing block is further configured to form a phase compensation angle based on the integrated instantaneous magnitude for use in a damping control signal generating unit in order to provide power or voltage oscillation damping of the system.

Abstract: A device for sensing the position of a contact carrier of a contact includes a housing, a sensor supported by the housing and a latch that is movable by the contact carrier. The latch has a latch member located in proximity to the sensor and that is generally non-reflective. The sensor is configured to sense a presence or an absence of the latch member at one particular location depending upon the position of the contact carrier. A method of sensing position of a contact carrier of a contact module is also presented.

Abstract: A device for sensing the position of a contact carrier of a contact includes a housing, a sensor supported by the housing and a latch that is movable by the contact carrier. The latch has a latch member located in proximity to the sensor and that is generally non-reflective. The sensor is configured to sense a presence or an absence of the latch member at one particular location depending upon the position of the contact carrier. A method of sensing position of a contact carrier of a contact module is also presented.

Abstract: The present invention relates to a device and a method for utilizing a control module as an interfaced control of a dually configured AC/DC control coil comprising monitoring a coil voltage of the control coil, determining if the coil voltage is greater than a predetermined dropout voltage, and determining if the coil voltage is greater than a predetermined pickup voltage. Further, a generated astable pulse is reset in the event that the coil voltage is determined to be less than the predetermined dropout voltage.

Abstract: An apparatus for an electromagnet is disclosed. The apparatus includes a magnetizable stationary core having first and second end portions and a side portion, a magnetizable movable armature disposed proximate the core for establishing a magnetic circuit therebetween, and a permanent magnet disposed between the first portion of the core and a first end of the armature. The armature is movable between a first position and a second position, the first position resulting in the first end of the armature being proximate the first end of the core.