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JP3753544B2 |
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JP3753553B2 |
To reduce ground accidents by electrically insulating a vacuum container from a ground voltage. A main circuit switch portion 20 and a ground switch portion 30 is stored in a vacuum container 10 of this switch gear, and the main circuit ...
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JP3753943B2 |
To provide a breaker device that can be down sized and generation of contact failure between a moving electrode and a fixed electrode can be prevented. In the breaker device, a pair of fixed electrodes 35 and 35 are installed to sandwich...
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JP2006040736A |
To provide a locking means to maintain the switching condition of a switch in a disconnector, whereby the disconnector can be safely inspected without causing power failure or the like by surely maintaining the present condition of a mai...
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JP3738580B2 |
To enable confirmation of switching from a turning-on state by a manual handle to an automatic operation. A main shaft 2 for turning on/off a pole-mounted switch and a hand-operated shaft 16 rotated by a plunger 8 of an electromagnet 5 a...
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JP3738551B2 |
To prevent incomplete closing motion in the course of energy storage of springs, by providing an energy-storage indication in an indication position of an indication plate by a driving lever being rotated by rotation of a hook lever via ...
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JP3738490B2 |
To prevent detachment of a handle at a position except three positions and temporarily stop a movable blade at the three positions without using a control electric power source by installing members which restrict respective lock pins to...
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JP3738586B2 |
To mechanically lock an operating device at all times so as not to be moved by an external force from the side of a switch in the cases where the switch is not operated, and immediately stop the device while it is taking switching action...
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JP2006020378A |
To provide an inspection loading unit of a switch driver in a disconnector capable of inspecting the switch driver of a disconnector in safety without causing service interruption by inspecting it as a unit while disconnecting from a tra...
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JP3718700B2 |
PURPOSE: To reliably control switching even if the laser beam has low energy by generating plasma by means of converging and applying the laser beam which passes through one electrode back side and a through hole to the other electrode f...
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JP3716518B2 |
To provide an outside operation handle device with improved safety. This device is constituted by housing a circuit breaker in a box 1 and inserting an outside operational handle 10 installed in the box through a cover 2 in a manner that...
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JP3715488B2 |
To provide an evaluation tool for a semiconductor integrated circuit device in which the evaluation using actual products is not necessary. For instance, piezo-diffusion resistance units 12 and temperature monitor units are arranged in t...
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JP3711039B2 |
To provide a switch in which movable contact blades can be smoothly inserted, even when the movable contact blades do not correspond with the inserting gap between both fixed contactors by the vibration to right and left of the movable c...
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JP2005294215A |
To secure safety at an early stage of maintenance and inspection work of a high voltage equipment.The interlock device is provided so that an inverter unit may not be in a state of being exposed and is constructed of a conductive upper l...
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JP3707862B2 |
To provide a high voltage switchgear on which an axial directional dimension is comparatively small and the whole disconnector deformation example can be incorporated into a housing formed in the same with respective deformation examples...
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JP2005285534A |
To prevent damage to equipment installed on a base or a pedestal by directly releasing a flashover lightning current generated at a protective gap, when the protective gap is installed between contact terminals for releasing out the ligh...
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JP3695214B2 |
To enhance convenience in use and to reduce the size by continuously positioning a movable conductor by one operation in four positions of a closed position, an open position, a cutoff position, and a grounding position or three position...
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JP2005235608A |
To provide an inexpensive and small-sized switch which is used for opening/closing an electric path of a high-voltage distribution line, by performing improvement.The switch has a main body case, and in the main body case an opening/clos...
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JP3683743B2 |
To provide a multi-circuit switch capable of disabling the other maintenance switch contacts from being closed when one maintenance switch contact is closed among a plurality of maintenance switch contacts. In this multi-circuit switch, ...
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JP3684170B2 |
To provide an inexpensive and low cost rotary disconector for high- voltage power transmission which can maintain the state after the operation of a rotary contact of the disconector without using a special lock means, and can reduce in ...
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JP3683089B2 |
To provide a switch gear reduced in size and production cost, and generating no explosion in an occurrence of an arc short circuit accident therein. A fixed electrode 3 for a main circuit is provided at one end of the inside of one vacuu...
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JP2005216853A |
To provide a heavy duty relay having a simple structure, manufacturable at a low cost and sellable at a low price.This heavy duty relay 1 can switch a current from 40A to 1,000A. The heavy duty relay 1 has a change-over spring 3 which ca...
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JP2005216573A |
To provide a small disconnector capable of avoiding its size from needlessly increasing for securing an insulation distance in a limited space in a cubicle.The circumferences of movable blades 29 rotatably connected to load-side terminal...
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JP2005210797A |
To secure safety for the installation and removal of the wire connecting part of a power supply line.This power supply circuit comprises: a high-voltage battery B1; a low-voltage battery B2; a high-voltage power supply line 205; a low-vo...
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JP3678600B2 |
To construct a breaker device small and light and facilitate the drawout/set-in operations of a movable electrode. Stationary electrodes 14 to form a couple are fixed to a male housing 13. A movable electrode 30 is accommodated in a fema...
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JP3672568B2 |
The invention concerns a transformer assembly intended for the field terminal of encapsulated medium-voltage switchgear with a circuit-breaker housing which is connected to a bus-bar housing by means of a flange and a cable lead-through ...
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JP3664899B2 |
To provide a vacuum switchgear of simple configuration with a high reliability capable of suppressing consumption of SF6 gas and establishing good harmony with the environment. A vacuum valve 20 includes an insulation vessel in which an ...
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JP3660155B2 |
To provide a switch with a built-in fuse capable of being constructed small. A body case 11 has two walls 1a and 11b, and a power supply side bushing 12 is penetratively supported by one side wall 11a while a load side bushing 31 and acc...
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JP3660159B2 |
To provide a switch capable of improving assembly work efficiency. This switch is provided with bushings 13, 14 penetratingly supported on both side walls of a body case 12 wherein arrester elements 27a, 27b are stored, a fixed electrode...
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JP3660158B2 |
To provide a switch capable of improving insulation performance between lines having the same phase. In this switch 11 wherein bushings 13, 14 facing to each other are penetratingly supported on both side walls of a body case 12 for ever...
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JP3660272B2 |
To provide a switch capable of avoiding generation of an arc at an unspecified position on the live part in a body case in an internal short- circuit accident. Power-side arc electrodes 73 are respectively formed at an inside end part of...
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JP3660222B2 |
To provide a switch and its insulating barrier capable of preventing relative movement between insulating barriers provided for each phase. A switch is designed to insulate between phases and the ground by passing and supporting bushings...
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JP3660251B2 |
To provide a fixed electrode for a switch that eliminates, with a small space, an excess turning part due to play of an opening/closing mechanism part to an introduction position of a fixed contact of a movable contact blade, and can con...
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JP3660224B2 |
To provide a switch capable of avoiding the generation of an arc in an unspecified portion within a body case in an internal short circuit accident and preventing the breakage of the body case. A plurality of projections (earth electrode...
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JP3657202B2 |
To make attaching/detaching of a fuse impossible in a state that a short circuit plug is inserted. In a state that the short circuit plug 30 is inserted into an electrode 14, a guided part 40 of the short circuit plug 30 comes in contact...
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JP3657160B2 |
To provide a breaker which can miniaturized, is necessarily turned into discontinuous state on exchanging of a fuse and has good workability. Since a breaker collects a pair of stationary electrodes 20, 21 in a space and a direction by a...
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JP2005142017A |
To improve assembly structure in order to enhance the reliability of "open" and "close" detection action in a switch mechanism for blade opening and closing detection installed in a disconnector.This is a disconnector for electric power ...
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JP2005071910A |
To provide a contact structure of a disconnector capable of always applying predetermined contact pressure between contacts of the disconnector.In a finger contact 10, pins 40 are mounted by penetrating fingers 15 and a support body 11, ...
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JP3628551B2 |
To reduce loads applied to a movable locking part and to easily conduct strength design according to the loads. In an automatic drive 10 for inputting and opening a movable electrode 5 to a fixed electrode 4 by a drive power of a solenoi...
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JP3619751B2 |
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JP3616370B2 |
In an air circuit breaker, in order to provide a position indicating apparatus of a draw out type air circuit breaker which is capable of distinguishing a position of a breaker body accurately even a user can not distinguish colors by im...
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JP2005019214A |
To reduce the size of a switch by reducing a bending load and an impact load generated at a contact parting time at a contact pressure part for impressing pressure at the contact portion of the switch.In the switch, the action of an oper...
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JP2005019174A |
To provide a high-reliability switch driving device having a simple structure and capable of reducing the number of times of replacements of components.This switch driving device is so structured that the orbital surface of an operation ...
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JP3612439B2 |
A power supply shut-off apparatus includes a service plug 2 detachably mounted to a plug mounting portion 14 provided in an apparatus body 1, and the power supply-side switches between a conduction state and a nonconduction state between...
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JP3612262B2 |
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JP3612269B2 |
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JP3609704B2 |
To provide a switch which can prevent a moving-electrode from turning by a large amount beyond a prescribed release position. This switch 11 has bushings 21 and 22 relative in each phase piercing through and supported by both sidewalls o...
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JP3609646B2 |
To provide a multiple-circuit switch prohibiting the other maintenance opening/closing contacts from turning on when one maintenance opening/closing contact of multiple maintenance opening/closing contacts is turned on. Interlock mechani...
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JP3609703B2 |
To provide an insulating barrier for a switch, the inside of which can be verified seen, after being installed in the body case. This insulating barrier 41 for the switch 11 is an insulating barrier, where bushings 21 and 22 relative in ...
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JP3599519B2 |
To facilitate maintenance and inspection with the reduced number of operation turns by a method wherein a grounding conductor is pressurized or depressurized to compress or relieve a grounding spring attached to the grounding conductor a...
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