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JP2000511388A |
The present invention relates to a rotating asynchronous converter and a generator device. The converter comprises a first stator connected to a first AC network with a first frequency f1, and a second stator connected to a second AC net...
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JP3077310B2 |
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JP2000223331A |
To provide with a simplified structure a load-time tap switcher which can reduce the occurrence of wears or a contact failures with few movable parts, is high in reliability, taking into consideration the characteristic of electrical and...
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JP2000208340A |
To provide an under-load tap switcher diagnostic apparatus and a diagnostic method which uses it, wherein the switching time of a switcher is easily and surely measured without disassembling a transformer and lifting a switcher outside o...
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JP3066578B2 |
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JP2000508830A |
PCT No. PCT/SE97/00402 Sec. 371 Date Nov. 12, 1998 Sec. 102(e) Date Nov. 12, 1998 PCT Filed Mar. 10, 1997 PCT Pub. No. WO97/34161 PCT Pub. Date Sep. 18, 1997A method for monitoring an on-load tap changer wherein the recording of sound an...
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JP2000184714A |
To prevent the degree of coupling for high-voltage input from decreasing in a transformer that has a middle tap and is by tap switching corresponding to an input voltage.Primary coil winding N1 is divided into low-voltage coil winding N1...
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JP2000164441A |
To provide a potential transformer which does not require more than one set of suppression circuits even when the range of ferroresonance-causing capacitances is wide.A potential transformer device is provided with a potential transforme...
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JP3051905B2 |
The present invention relates to a power transformer/reactor ( 14, 15, 16 ) for high voltages, comprising at least one winding having at least one current-carrying conductor. The winding comprises a solid insulation ( 7 ) surrounded by o...
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JP2000507030A |
(57) [Summary] The high-voltage electrical equipment (13) consists of an insulating support (14) made of a molded first electrical insulating material and accommodating a rigid electrical conductor (11, 12) and a second electrical insula...
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JP2000150263A |
To provide a simple and reliable contact for a load tap selector capable of sealing insulating oil. A fixed contact 1 is provided with a metallic contact part and an electric insulating part 2, and the metallic conduct part is constitute...
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JP3041966B2 |
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JP2000133530A |
To improve reliability in a transformer by readily generating an optimum alternating current and holding the optimum frequency constant. When the capacitor value of a piezoelectric ceramics in an ultrasonic motor is changed at drive time...
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JP3037981B2 |
A bridge-contact assembly used in combination with an inner contact ring and a contact terminal of an array concentrically surrounding the ring comprises a contact hoousing rotatable concentrically with and between the ring and array, a ...
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JP2000125473A |
To reduce cost and installation space of a regulator itself.In a power regulator 5, one side ends of exciting windings 51u, 52v and 53w which are wound on three cores provided so as to correspond to respective phases which have phase dif...
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JP2000124042A |
To ensure easy replacement of taps by providing a transformer, having a plurality of taps, a first winding and a second winding, both of which are wound around an iron core, and points of connection or disconnection with taps, and furthe...
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JP2000114076A |
To eliminate the fluctuation of the inductance value of a transverse magnetic-field transformer, by winding a reactor winding across two diagonal magnetic legs of a core at a specific angle against a control winding wound across two adja...
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JP3031015B2 |
PURPOSE: To reduce the cost of a DC power unit by connecting a plurality of armatures in parallel with DC leads due to a large current, and lessening the unbalance of the partial charge of the current between the armatures. CONSTITUTION:...
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JP3022232B2 |
PURPOSE: To provide a method for protecting a transformer for positively detecting an inner accident of the transformer for adjusting phase with a third coil winding in addition to a tap coil winding and an adjustment coil winding. CONST...
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JP2000077241A |
To prevent excess voltage on a coil and a tap switcher, and to improve the cost befenit and reliability by reducing the potential oscillation at a coil intermediate part due to lightning surge and the potential of a tap switcher to the l...
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JP2000077240A |
To provide a tap switcher of a loaded tap switcher which is equipped with movable contacts in a contact configuration with a plane in a structure in which the shape can be reduced and rated currents can be increased. A current collecting...
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JP3018946B2 |
PURPOSE: To make it possible to change safely a tap by a method wherein an insulating barrier is provided directly under an electrical wire for connecting the power supply sides of a high-voltage bushing and a high-voltage cutout with ea...
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JP2000068131A |
To shorten the starting time of a power source equipment for an electrolytic plant. This power source equipment for an electrolytic plant is constituted of a breaker 1, a load time tap changeover transformer 2, a transformer 3 for a rect...
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JP2000036421A |
To perform voltage regulation with less regulating power, by dividing the first-side magnetic path into two parts, winding the first coils around the respective divided magnetic paths, applying the basic voltage with one first coil, and ...
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JP2602864Y2 |
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JP2000012347A |
To improve clamping operation of a band by providing a tap to an upper part clamp of a three-phase pole-mounted transformer or welding a hexagon nut to the backside of the upper part clamp so that a tap stage is fixed to the upper part c...
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JP2997410B2 |
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JP2996377B2 |
In order to effectively reduce consumer's electrical power consumption, an input voltage of a step-down autotransformer (2) is detected by a switch controller (4). Subsequently, the switch controller (4) compares the detected input volta...
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JPH11354341A |
To monitor the switching time of a selector switch with a simple configuration, without lifting the selector switch outside a transformer. The monitor device diagnoses abnormal condition of a selector switch 2 in a tap switcher 10 compri...
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JPH11345716A |
To prevent the generation of misdiagnosis by quickly and simply judging the leakage of insulating oil from a tap switching room for a load tap switching transformer to a transformer body while driving the transformer. A light emitting pa...
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JP2986424B2 |
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JP2986423B2 |
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JPH11329869A |
To eliminate faults in insulation and to obtain a stable desired voltage by providing a cap nut-like connecting member engaged with a cylindrical protrusion for electrically connecting a pair of terminal pieces isolated by fastening a te...
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JPH11514199A |
The present invention relates to a rotating asynchronous converter and a generator device. The converter comprises a first stator connected to a first AC network with a first frequency f1, and a second stator connected to a second AC net...
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JPH11317316A |
To provide an inexpensive tap switching transformer for loaded gas insulation with high reliability for contributing to the stability of power supply by suppressing the decrease of the insulating gas pressure of a changeover switcher, ev...
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JPH11312612A |
To provide a voltage adjusting device which is capable of quickly switching taps and quickly adjusting voltage, even in large voltage variations. In the voltage adjusting device connecting a secondary winding 4b of a series transformer 4...
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JP2969743B2 |
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JPH11283850A |
To reduce temperature increase and miniaturize a saturable reactor by constituting the saturable reactor having no control coil by using a saturable reactor core, which has specific composition, crystal grain diameter and magnetic charac...
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JP2961688B2 |
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JPH11260203A |
To downsize an overall device and to reduce the number of a parts for cost reduction. An energy storing device for an on-load tap changer has a hoist case 19, an energy storing case 20, an energy storing spring 25, a rail 21, ball bearin...
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JPH11233354A |
To provide a transforming facilities provided with a reliable and practical control system for higher performance, reduced size, and simplicity, including the relationship with a higher-order system. A higher-order system 40 which suppli...
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JP2941268B1 |
[wrap up] [Task] By improving the structure of the cylinder, the impact force that the slave lever collides with the stopper is alleviated, the structure of the stopper is simplified, and the overall cost is reduced. To provide a force m...
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JPH11225437A |
To realize the function monitor method of an on-load tap changer which enables the compression of data. (a) Measured data expressing the state of an on-load tap changer to be monitored are detected with short time intervals. (b) The tap ...
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JP2924533B2 |
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JP2919097B2 |
A saturable reactor comprising a magnetic core (1) having an annular or an elongated race-track configuration, an electrical insulator (6) disposed around the magnetic core and a conductor winding (3) wound around the insulator (6). A co...
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JP2918809B2 |
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JPH11186049A |
To provide a variable linearity coil, which is capable of preventing the occurrence of buzzing sounds when it is placed on a printed wiring board, which can obtain the original characteristic of the linearity coil without damaging the re...
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JPH11183107A |
To provide a signal processing circuit for differential transformer which has a temperature compensating function and a fault diagnosing function in a simple circuit configuration. Voltage detectors 71a and 71b are respectively connected...
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JPH11186072A |
To provide a transformer which also can be built into an electronic control system as a functional element by enabling precision voltage setting not through intermittent swathing, wherein a tap is used but through changing transformation...
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JP2597022Y2 |
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