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JP3940349B2 |
To provide a power supply switching device capable of making a safe switching operation. A supply-side terminal 3 connecting a supply-side wiring and a demand-side terminal 5 connecting a demand-side wiring are packaged inside a switchin...
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JP3933419B2 |
To prevent a short-circuiting plug from being pulled out between a pair of electrode, in a state with a main circuit closed. In the process of pulling out the short-circuit plug 30 from an electrode 15, after opening a relay (switching m...
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JP3933885B2 |
To discharge charged current charged in a capacitor or the like in a load part when being moved from a circuit continuity state to a circuit breaking state. This circuit breaking device 1 is constituted such that an earth side terminal 1...
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JP3932695B2 |
To reduce the size of a switching portion and perform downsizing by forming slits for passing the tip of a movable blade on the both sides of a detecting electrode. A pair of slits 13 are formed on the both sides of a detecting electrode...
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JP3930283B2 |
To provide a compact power source switch using a toggle mechanism to accumulate the energy for switching motion. This toggle mechanism 3 includes a handle 5 on a cross bar 4, a link arm 7 forming a pair of toggle linkages 6, extensible l...
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JP3923721B2 |
To miniaturize a switching device by shortening the axial direction of a second contact. A first guide 17 and a second guide 18 to guide a second contact 11 in the direction to make it accessible to a first contact 10 are disposed on the...
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JP2007511887A |
A circuit breaker and/or earthing switch are disclosed wherein a rotatable spindle nut, which is mounted in a spindle housing, displaces a spindle in a translatory manner, thus displacing contact elements of the switching device. The spi...
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JP3912757B2 |
To provide the failure diagnosing technology of a power operating apparatus for a disconnector which conveniently diagnoses a failure without stopping the facility of the disconnector during operation and sufficiently obtains an effect f...
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JP3905266B2 |
To provide a small-sized high-performance vacuum insulation switch gear at low production cost. A vacuum insulation gear comprises a vacuum vessel and a necessary number of switch mounted in the vacuum vessel, is formed of a metal materi...
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JP3906705B2 |
To surely position all of three positions by stoppers, and to provide structure in which an operating device does not move when receiving torque from an apparatus side. An operating shaft lever 22, a driven shaft lever 24, and a connecti...
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JP3902273B2 |
To provide a drive device which can be operated easily as well electrically as manually and can take three positions, the first, the second, and intermediate position, accurately even in the case of manual operation. The rorary motions a...
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JP3897989B2 |
To prevent a short circuit plug from being pulled out between electrode pairs with a main circuit closed. When shifting from an operation of an operation part 34 (operation means) for opening a relay (switching means) to a next operation...
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JP3893034B2 |
To obtain a main circuit switching device where it is unnecessary to form a support frame out of non-magnetic material, and thus the cost thereof is low. The main circuit switching device comprises a disconnector 34, grounding switches 4...
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JP3886735B2 |
To provide a small, inexpensive circuit breaking device preventing the fusion loss of a terminal caused by arc discharge without using two relay switches and a control circuit of them. A load side terminal 12 connected to a load part, a ...
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JP3868104B2 |
To provide a switch gear having higher safety and reliability by preventing artificial deposition of flexible conductor or contactor to a contact area without using a material for preventing adhesion. A cylindrical first cover member 51 ...
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JP2006351397A |
To easily inspect an operating apparatus for a disconnector, without causing power failure to consumers, by separating an operating rod for revolving a blade from the operating apparatus and by only inspecting the operating apparatus.The...
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JP3860553B2 |
To improve economical efficiency that is attained by downsizing a gas insulated switchgear entirely, by miniaturizing a disconnector, a grounding switch, or a conductor connection part applied to the gas insulated switchgear. This gas in...
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JP2006327251A |
To provide a power circuit opening and closing device capable of realizing favorable working efficiency while securing working safety.A circuit terminal T1 connected to a high voltage system and a circuit terminal T2 connected to a low v...
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JP2006333659A |
To provide a trip locking terminal that makes it possible to easily and reliably check the possibility that a circuit breaker performs opening operation.The trip locking terminal 1 is provided between a relay and a circuit breaker and is...
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JP2006324158A |
To enable testing to be proceeded smoothly by ensuring connection by a bagworm clip.A washer 11 of a terminal screw 3 of a terminal board 1 is to have a tongue 8, so that it can be easily pinched by the bagworm clip 7 and yet the clip wo...
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JP2006324165A |
To provide an inspection method whereby an apparatus to be inspected such as a control device of a remote control switch or the like can be inspected with good workability, and stable display can be obtained in a short time because noise...
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JP3851499B2 |
To provide a fixed contact high in productivity and reliability and a switchgear high in performance. This fixed contact constitues its characteristic feature of being furnished with a contact member one end of which is extended to the s...
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JP3848722B2 |
To eliminate time-consuming installation work by providing a switch unit compactly incorporating a switch for a voltage regulating device, a current detecting sensor, a voltage detecting sensor, an abnormality detecting sensor and the li...
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JP3844565B2 |
To simplify the construction of an insulation/earth switch by making a movable contact in a push contact structure, guiding the movable contact to be able to move linearly inside a contact housing via a toothed rack shaft, etc., and also...
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JP3845534B2 |
To devise reducing size of the whole shape, reducing number of parts and casting man-hours by yielding insulation strength without using SF6 gas. A switchgear 1 has been made by packaging a plurality of vacuum valves 7, 13 together with ...
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JP3840848B2 |
To provide a compact disconnector in a simple structure. Main circuit conductors 12d, 12e have cavities formed in parts of its longitudinal direction. A movable contact piece 27 moves across the cavities nd perpendicularly to the longitu...
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JP2006294565A |
To provide a disconnector surely and easily confirming positional relation of an input stopper by applying a simple treatment on a moving structure located at upper side of the disconnector.The disconnector is provided with a movable con...
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JP3823309B2 |
To provide an earth detector capable of locating an earth occurrence point without bifurcation of the earth current to a frame in the case when a ground fault accident has occurred in an insulator device. An induction gap 11 is provided ...
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JP3820354B2 |
To provide a lever-fitting power supply circuit breaker which needs only lever operation securing the safety for workers. This is a lever-fitting power supply circuit breaker 1A wherein the lever 2 is movably installed in one connector h...
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JP3820353B2 |
To prevent the generation of leak current caused by arc discharge of a consumable electrode. This circuit breaking device 1 is constituted such that a load side terminal 12, a power source side terminal 13, a consumable electrode 14 conn...
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JP2006236680A |
To easily and surely switch a switch-over blade to receiving blades at both sides to pressure-hold it to a standing blade and the receiving blades in the case that the standing blade is arranged in parallel with the receiving blades at b...
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JP3817145B2 |
To prevent a movable electrode from being released from a fixed electrode with a main circuit closed. When a movable side housing 20 is separated from a fixed side housing 10 from a state where the electrodes 12 and 22 are fitted togethe...
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JP2006221838A |
To form a low-voltage power supply electric path that passes through a lightning-resistant transformer 3 at the occurrence of lightning only, can be switched to a mode in which the electric path bypasses the lightning-resistant transform...
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JP3810050B2 |
To provide a multifunctional vacuum valve, capable of making the overall equipment shape malle as a whole by providing the second electrode, for example, a ground electrode for multifunctional operation in addition to the switching funct...
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JP2006202549A |
To provide a manual operation apparatus for a switch, in which a load switch and a ground switch are manually operated by one operation shaft, and a locking mechanism has a simple structure.The manual operation apparatus for a switch com...
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JP3798938B2 |
To carry out engaging and disengaging even in confined space. In the device, 4 pieces of pin type fixed electrode 13 are provided protruding from a fixed side housing 10 insulated from one another. Moving electrodes 23 to make continuity...
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JP3798280B2 |
To assure safety of a worker when removing the other connector housing from a fitting surface for repair, etc. Related to a lever engagement type power-source circuit breaker 1A, a lever 2 is movably provided to one connector housing 1. ...
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JP2006185689A |
To provide a tool for throw-in operation in which a power source can be applied simultaneously to a cutout constituted of a unit having three electrodes which correspond to respective cables of three phases.Concerning the unit constitute...
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JP3788148B2 |
To provide a vacuum switch which has improved its reliability by making it compact and constructing it so that the vacuum of a breaking part may surely be measured and monitored and even if there were any failures or troubles in the brea...
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JP3781944B2 |
To provide a multifunctional vacuum valve, having a smaller shape as a whole and achieving multifunction with the second electrode displaced between main electrodes for providing disconnecting function, in addition to the switching funct...
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JP3780759B2 |
To provide a main shaft structure for a switch allowing easy and inexpensive manufacture by simplifying the structure of a main shaft turning on/off the switch, and allowing improvement of reliability by improving transmission efficiency...
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JP3775010B2 |
To reduce power loss and generated heat and improve current cut-off performance for size reduction in a vacuum grounded container on the fixed electrode side, by increasing the inside volume of the vacuum grounded container on the fixed ...
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JP3775939B2 |
To provide a switchgear which secures safety and is easy to reduce in size. This switchgear is made up of a switching mechanism, a vacuum container 10 for housing the switching mechanism, and an insulating mold 60 covering the vacuum con...
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JP2006120374A |
To provide a switch mechanism with an overcurrent protection function of a relatively small size, having a simple structure.A switching arm 6 makes a movable contact 1 move between a turn-on position and a turn-off position through a joi...
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JP3769893B2 |
To synchronously input a current at low cost by constraining the rotation to close side of a constraining lever out of a casing by the energizing force of a stopper within the casing, and attracting the stopper into the casing against th...
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JP3769887B2 |
To prevent connecting deficiency at a connecting portion of a disconnector and eliminate intrusion of chips by constituting the disconnector of a dipole structure in which a pair of conductors are disposed opposite to each other via insu...
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JP2006100026A |
To provide a small and compact disconnector having a fixed contact and a movable contact, whose structure is improved so that parts can be commonly used for different rated currents.The disconnector is composed of a pair of external term...
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JPWO2004054057A1 |
Circuit breakers, disconnectors with grounding switches, and busbar bushings in insulated gas-filled tanks are all mounted and supported by a single flat mounting plate that is part of the tank. The ground side terminal of the disconnect...
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JP3760382B2 |
To provide a vacuum switch easy to assemble parts in a vessel by improving assembling workability of parts stored in a vacuum vessel, simplifying a shape of the vacuum vessel. This vacuum switch is provided with a ground switch, a load s...
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JP3758435B2 |
To prevent a mechanical damage and an electric discharge due to an electric field concentration in the junction part of a vacuum vessel. It covers the surrounding of the contact portion of an insulation cylinder with a vacuum vessel part...
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