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JP6479369B2 |
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JP2019017226A |
To make the voltage, on the secondary of a transformer having an on-load tap changer, more stable.A voltage control program has a voltage value calculation processing function, and an operation command function. The voltage value calcula...
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JP6461132B2 |
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JP6444699B2 |
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JP6438028B2 |
In an on-load tap changer (10) for controlling voltage of a tapped transformer (15) it is provided that the tapped transformer (15) has at least one regulatable phase (16) that has a first winding (20) and a second winding (30); the firs...
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JP6437849B2 |
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JP6434081B1 |
To drive a drive shaft by a storage force of a storage mechanism, there is a problem that the storage torque due to the storage force is attenuated as the final stage of the drive range is approached. An auxiliary drive device 10 holds a...
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JP6426733B2 |
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JP6421484B2 |
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JP6422686B2 |
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JP6418717B2 |
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JP6396285B2 |
The invention relates to a distribution transformer having a tap-changing device for no-break switching between different winding taps of a distribution transformer. The general inventive concept consists in actuating both the selector c...
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JP6396286B2 |
The invention relates to an on-load tap changer for switching among different winding taps of a step transformer without interruption according to the preamble of the first patent claim. The general inventive concept lies in actuating bo...
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JP6391906B2 |
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JP6379193B2 |
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JP6379192B2 |
An on-load tap changer has a switching tube, an oil suction pipe arranged centrally and coaxially along an axis inside the switching tube, and a kerosene drain screw so mounted in a base of the on-load tap changer that it is coaxial with...
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JP6373254B2 |
An on-load tap changer for uninterrupted switching between different winding taps of a tapped transformer has a plurality of fixed selector contacts electrically connected with the individual winding taps, arranged in a line, and actuata...
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JP6333236B2 |
The invention relates to a control transformer that is designed as a phase-shifting transformer, wherein semiconductor switching components are provided for each phase at a regulating winding with several partial windings. According to t...
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JP6316284B2 |
The invention relates to an on-load tap changer for switching among different winding taps of a step transformer without interruption. According to the invention, the selector contact unit (7) and the switching means (16, 17) for switchi...
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JP2018064028A |
To provide a tap changer and a protection method having less occurrence of a failure with simple configuration.A tap changer in one embodiment has a semiconductor switch and a protection circuit. The semiconductor switch shuts off or tur...
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JP6308835B2 |
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JP6310905B2 |
The invention relates to a method for monitoring an on-load tap changer that is used to switch between winding taps of a tapped transformer without interrupting the load current and is actuated using a motor drive. According to the inven...
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JP2018057135A |
To solve the problem that it is difficult to promptly switch a tap to an optimal tap since there is a case that the tap is different from an assumed voltage regulated value when the tap is actually switched in a conventional voltage regu...
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JP6290182B2 |
An operational setting of an on-load tap changer used to switch between various winding taps of a tapped transformer is determined by first placing the on-load tap changer in operation with the tapped transformer and then moving the chan...
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JP6285167B2 |
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JP6282547B2 |
An on-load tap changer which ensures the compatibility of an oil tank when an interchange from the in-oil arc switching scheme to the vacuum-valve scheme is made, improves a retrofit function, achieves a space saving by simplifying compo...
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JP6275244B2 |
The invention relates to a method for performing a switching process in an on-load tap changer between winding taps of a tapped transformer. The switching process for an on-load tap changer is subdivided into a plurality of phases accord...
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JP6250560B2 |
The invention relates to a transformer with a tap changer, wherein optionally the primary or secondary side can be regulated by the tap changer, and wherein, on the side of the transformer to be regulated, a main winding and at least one...
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JP6239126B2 |
A gas-insulated measurement transformer for measuring high voltages has a plurality of transformer arrays arranged in a fluid-tight housing for transforming a high voltage to a measurement voltage. Each of the arrays has an active part, ...
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JP2017208504A |
To provide a connection terminal in which bubbles are less likely to remain and occurrence of partial discharge is suppressed.The connection terminal has a bottomed tubular outer shape having an opening portion 10a to be crimped to a con...
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JP6180573B1 |
[Subject] A tap switching arrangement is provided at the time of load which can prevent the situation where output torque of stored impetus drive mechanism which operates a switch which carries out opening-and-closing operation runs shor...
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JP6148851B2 |
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JP2017515308A |
A position indicator for tap changer tap changers, which is the first and second display disc (21,22) for displaying the currently switchable position of the tap changer. A display device (51) that can be gradually switched by each switc...
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JP6120867B2 |
A tap changer with vacuum-switching tubes for controlling a transformer having taps has a selector for power-free selection of a one of the taps to be switched and a load-changeover switch for actual switching over from the connected tap...
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JP6117338B2 |
The invention relates to a method for monitoring an on-load tap changer according to the known “windowing technique,” wherein for synchronization, the current (I) on the diverter switch is continuously detected, the effective value (...
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JP6084505B2 |
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JP6081082B2 |
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JP6077361B2 |
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JP6070313B2 |
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JP6071247B2 |
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JP6067220B2 |
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JP6063647B2 |
To obtain a transformer capable of stabilizing system voltage by enabling control over a starting current of an AC motor.In the transformer, a primary winding 2 and a secondary winding 3 are sequentially arranged concentrically at an out...
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JP6059217B2 |
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JP6057679B2 |
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JP2016225590A |
To provide an inductor for current-limiting circuit, capable of retaining a large inductance at instantaneous large current conduction for exhibiting a current-limiting effect even with a small size, particularly used for an electric cur...
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JP2016225334A |
To provide a compact tap changer having elongated maintenance intervals.The tap changer includes: a first terminal T1 and a second terminal T2 connected to a tap winding 1 of a stationary induction electric apparatus; a first semiconduct...
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JP6030082B2 |
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JP6025059B2 |
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JP6012025B2 |
The present invention relates to a dry distribution transformer comprising a housing (1′), a coil (200), a sealed compartment (100) and a taps panel (110) associated to the coil (200). The taps panel (110) has an electrostatic shield (...
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JP6013875B2 |
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