Patent application number | Description | Published |
20140076852 | Electrical Contacts, Manufacturing Methods Thereof, Electrodes, Vacuum Interrupters, and Electric Power Switches - Provided an electrical contact is cheap, excellent workability and lasts the effect of chopping current reduction. An electrical contact comprising a Cu matrix, and compounds Cu and low melting point metal which are dispersed in the Cu matrix, wherein a vapor pressure of the low melting point metal is more than 10 | 03-20-2014 |
20140360853 | SWITCHGEAR AND OPENING AND CLOSING METHOD THEREOF - A switchgear including a plurality of switch units having a fixed electrode and a movable electrode; and an operating device configured to operate the movable electrode of each of the switch units, wherein the operating device is configured of one motive part and two follower parts that intermittently operate with each other, and part of each of the follower parts touches the motive part, thereby in a condition that moving force is not transmitted from the motive part to the follower part, a state of the follower part is fixed, and in a condition that the motive part shifts from an initial position to a final position, a state of one of the follower parts is allowed to transit, and a state of the other of the follower parts is changed with a delay from such state transit, thereby the switch units are driven while a time delay is produced. | 12-11-2014 |
20140361858 | ACTUATOR FOR CONTACTOR - An actuator for a contactor comprises an electromagnet having a closing coil, a holding coil, fixed cores wound with the closing coil and the holding coil respectively, a movable core provided on one side of the fixed cores, and a yoke. A main contact movable member operates to perform closing or interrupting by attraction or release of the movable core with respect to the fixed core. The actuator has a trip spring, energy-stored during the closing, that performs the interrupting upon stopping energization to the holding coil and thereby releasing the stored-energy. The actuator has an auxiliary contact operating with the operation of the movable core and performing energization switching with respect to the closing coil and the holding coil. The trip spring is provided on one side of the electromagnet in a horizontal direction while the auxiliary contact is provided on the other side. | 12-11-2014 |
20150060409 | Vacuum Switch - An object is to obtain a vacuum switch that can achieve higher insulation properties to improve reliability. In a vacuum switch for interrupting a single-phase alternating current, three vacuum valves (VI) for a three-phase alternating current are coupled together in series. Specifically, the three vacuum valves for a three-phase alternating current are coupled together in such a manner that the current flows through adjacent vacuum valves in the same direction or in such a manner that the current flows through adjacent vacuum valves in different directions. | 03-05-2015 |
20150124376 | SWITCHGEAR AND SWITCHGEAR ASSEMBLING METHOD - The present invention has an object to provide a switchgear capable of improving workability and a switchgear assembling method. The switchgear according to the present invention has: a plurality of switch units | 05-07-2015 |
20150198260 | Operation Device, Vacuum Opening/Closing Device, and Method for Assembling Operation Device - The object of the present invention is to provide a reliability-improved operation device, vacuum opening/closing device, and method for assembling an operation device. In order to attain the above-mentioned object, the operation device includes an electromagnet | 07-16-2015 |
20150206676 | SWITCH - Provided is a reliable switch having a contact surface that is prevented from being roughened. To solve the problem, there is provided a switch including a plurality of switching units | 07-23-2015 |
20150318132 | Operating Device or Vacuum Switch - The invention has an object to provide an operating device or vacuum switch which permits reduction in the overall height of the operating device and improves installation convenience. In order to solve the above problem, an operating device according to the present invention is characterized by including an electromagnet | 11-05-2015 |