JPS63101775A - Ac high voltage generator - Google Patents
Ac high voltage generatorInfo
- Publication number
- JPS63101775A JPS63101775A JP24743086A JP24743086A JPS63101775A JP S63101775 A JPS63101775 A JP S63101775A JP 24743086 A JP24743086 A JP 24743086A JP 24743086 A JP24743086 A JP 24743086A JP S63101775 A JPS63101775 A JP S63101775A
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- Prior art keywords
- voltage
- terminal
- capacitor
- unit
- variable reactor
- Prior art date
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Links
- 239000003990 capacitor Substances 0.000 claims abstract description 38
- 230000005284 excitation Effects 0.000 claims description 14
- 238000004804 winding Methods 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 3
- 238000012360 testing method Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 238000009413 insulation Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
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- Testing Relating To Insulation (AREA)
- Ac-Ac Conversion (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は交流高電圧の絶縁試験に用いられる直列共振形
の交流電圧発生器に係り、特に、発生器の出力電圧を測
定するのに好適な分圧器内蔵形の高電圧発生器に関する
。[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a series resonant AC voltage generator used for AC high voltage insulation testing, and is particularly suitable for measuring the output voltage of the generator. This article relates to a high voltage generator with a built-in voltage divider.
［従来の技術〕
従来、交流絶縁試験装置は第６図に示すような回路構成
にするのが一般的である。電源５１．を圧調整器５２．
試験変圧器５３．容量分圧器５４を接続し、端子５５に
高電圧を発生させている。[Prior Art] Conventionally, an AC insulation testing device generally has a circuit configuration as shown in FIG. Power supply 51. Pressure regulator 52.
Test transformer53. A capacitive voltage divider 54 is connected to generate a high voltage at a terminal 55.
発生電圧は分圧器５４の分圧端子５６の電圧を測定し１
分圧比に応じて求められている。なお、この種の装置は
、例えば、電気学会雑誌、ｖｏｌ。The generated voltage is determined by measuring the voltage at the voltage dividing terminal 56 of the voltage divider 54.
It is determined according to the partial pressure ratio. Note that this type of device is described in, for example, the Journal of the Institute of Electrical Engineers of Japan, vol.
９３ 、 ＆ ５ 、 Ｍ ａ ｙ 、 １９７３ 、
２６頁から３３頁に記載されている。93, & 5, May, 1973,
It is described on pages 26 to 33.
直列共振形の試験変圧器は第７図のように回路構成され
、発生電圧は従来の例と同様容量分圧器を接続して測定
される。電ｇ６１．電圧調整器６２、励磁変圧器６７、
可変リアクトル６３．供試品となるコンデンサ６５．容
量分圧器６４を第１１図のように接続して回路構成し、
可変リアクトル６３のインダクタンスとコンデンサ６５
のキャパシタンスおよび容量分圧器６４のキャパシタン
スによって直列共振させ、コンデンサ６５に高電圧を発
生させる。The series resonant test transformer has a circuit configuration as shown in FIG. 7, and the generated voltage is measured by connecting a capacitive voltage divider as in the conventional example. electric g61. voltage regulator 62, excitation transformer 67,
Variable reactor 63. Capacitor 65 as a sample. The capacitive voltage divider 64 is connected as shown in FIG. 11 to configure the circuit,
Inductance of variable reactor 63 and capacitor 65
The capacitance of the capacitor 65 and the capacitance of the capacitive voltage divider 64 cause series resonance, and a high voltage is generated in the capacitor 65.
上記従来技術は高電圧を発生させる本体とは別に電圧測
定用の容量分圧器が配置されるため、試験場となる実験
室がその分だけ大きくしなければならないという欠点が
ある。すなわち、部分放電の明室を必要とする場合、外
部から侵入するノイズを抑制するため、シールド構造の
建屋にしなければならないことや、雨に対して発生器そ
のものの絶縁性能を維持するために建屋が必要であるな
ど屋内形の試験装置でなければならない、そこで、ＵＨ
Ｖ送電に対応した機器の開発を行う場合、交流電圧の必
要発生電圧は１５００〜２２００ＫＶ程度であり、絶縁
空間として１５〜２０ｍ必要となる。従って、電圧測定
用の容量分圧器が試験装置に付加されれば、その分だけ
大きな建屋が必要となり、建設費は膨大なものとなる。The conventional technology described above has a drawback in that a capacitive voltage divider for voltage measurement is arranged separately from the main body that generates the high voltage, so the laboratory serving as the testing site must be made correspondingly larger. In other words, if a bright room for partial discharge is required, the building must have a shield structure to suppress noise entering from the outside, and the building must have a shield structure to maintain the insulation performance of the generator itself against rain. The test equipment must be indoors, such as the need for
When developing equipment compatible with V power transmission, the required AC voltage to be generated is about 1500 to 2200 KV, and an insulating space of 15 to 20 m is required. Therefore, if a capacitive voltage divider for voltage measurement is added to the test equipment, a correspondingly larger building will be required, and the construction cost will be enormous.
本発明の目的は高電圧発生装置のコンパクト化を回り、
建屋寸法を小さくして、実験室の建設費を少なくするこ
とにある。The purpose of the present invention is to make a high voltage generator compact;
The aim is to reduce the construction cost of the laboratory by reducing the size of the building.
上記目的は、電圧測定用の容量分圧器と可変リアクトル
を一つの容器に収納し、実験室の絶縁空間に配置しない
ようにすることにより達成される。The above object is achieved by housing a capacitive voltage divider for voltage measurement and a variable reactor in one container so that they are not placed in an insulated space of a laboratory.
超高電圧１例えば、交流１５００ＫＶ以上の電圧を発生
する直列共振形の高電圧発生器は、可変リアクトルを多
段カスケード接続で構成される。容量分圧器として作用
させるためのコンデンサを可変リアクトルと同一の容器
内に収納して各々の端子を導出し、これを一つのユニッ
トとして多段に積重ね、コンデンサの直列接続およびイ
ンダクタンスの直列接続を構成する。最高電圧となる上
部のコンデンサ端子はインダクタンスの最上部と接続し
、可変リアクトルの下端子は励磁変圧器と接続し、コン
デンサの下端子は変流器を介して励磁変圧器と接続し、
変流路の二次側の電流を測定することによって最上部の
発生電圧を算出することができる。すなわち、コンデン
サの下端子は可変リアクトルと変流路を介して接続され
ているだれであるので、その間の電位差は小さい、つま
り、供試品の共振倍率Ｑが変ってもコンデンサの下端子
と可変リアクトルの下端子間の電位差は小さいので、各
ユニットの端子間発生電圧は小さくなり、小さなブッシ
ング端子とするだけで容量分圧用のコンデンサを内蔵で
きるようにしたものである。Ultra-high voltage 1 For example, a series resonant type high voltage generator that generates a voltage of 1500 KV or higher is configured by cascading variable reactors in multiple stages. A capacitor to act as a capacitance voltage divider is housed in the same container as the variable reactor, each terminal is led out, and these are stacked in multiple stages as one unit to form a series connection of capacitors and a series connection of inductance. . The upper capacitor terminal with the highest voltage is connected to the top of the inductance, the lower terminal of the variable reactor is connected to the excitation transformer, the lower terminal of the capacitor is connected to the excitation transformer via a current transformer,
By measuring the current on the secondary side of the variable current path, the voltage generated at the top can be calculated. In other words, since the lower terminal of the capacitor is connected to the variable reactor through the variable current path, the potential difference between them is small.In other words, even if the resonance magnification Q of the sample changes, the lower terminal of the capacitor Since the potential difference between the lower terminals of the reactor is small, the voltage generated between the terminals of each unit is small, and a capacitor for capacitance voltage division can be built in by simply using a small bushing terminal.
以下、本発明の一実施例を第１図ないし第５図により説
明する。An embodiment of the present invention will be described below with reference to FIGS. 1 to 5.
第１図は本発明の分圧器内蔵直列共振層高電圧発生器の
回路構成を示す。可変リアクトルＬ１とコンデンサＣ１
を容器に収納し、各々に端子１１゜１２．３１．３２を
引き出し、これを一つのユニット１として構成する。同
様に可変リアクトルＬ２とコンデンサＣ２を容器に収納
し、端子１３，１４．３３．３４を導出し、これを第二
のユニット２として構成し、以下同様に第６のユニット
６までを積み重ね、端子間１２−１３．１４−１５゜１
６−１７．１８−１９．２０−２１およびコンデンサ端
子間３２−３３．３４−３５．３６−３７３８−３９．
４０−４１を電気的に接続し、最上部となる端子２２と
端子４２を接続し、さらに、）子２２は静電容量をもつ
供試品７４に接続されている。ユニット１の端子１１は
励磁変圧器７１に接続され電源７３より電圧調整器７２
を介して電圧が供給される。また、ユニット１の端子３
１は変流器７に接続され、変流器７の二次側は電流計８
に接続されている。FIG. 1 shows the circuit configuration of a series resonant layer high voltage generator with a built-in voltage divider according to the present invention. Variable reactor L1 and capacitor C1
are housed in a container, and the terminals 11, 12, 31, and 32 are pulled out from each, and this is configured as one unit 1. Similarly, variable reactor L2 and capacitor C2 are housed in a container, terminals 13, 14, 33, 34 are drawn out, and this is configured as the second unit 2. Thereafter, stack up to the sixth unit 6 in the same manner, and terminal Between 12-13.14-15゜1
6-17.18-19.20-21 and between capacitor terminals 32-33.34-35.36-3738-39.
40-41 are electrically connected, the terminal 22 at the top is connected to the terminal 42, and the terminal 22 is connected to a sample 74 having capacitance. Terminal 11 of unit 1 is connected to excitation transformer 71 and voltage regulator 72 is connected to power supply 73.
Voltage is supplied via. Also, terminal 3 of unit 1
1 is connected to a current transformer 7, and the secondary side of the current transformer 7 is connected to an ammeter 8.
It is connected to the.
電圧調整器７２によって発生した励磁変圧器７１の出力
電圧は直列に接続された可変リアクトルＬ１〜Ｌ６のイ
ンダクタンスＬと供試品７４のキヤパシタンスＣとの直
列共振によって端弊２２と接地７５の間に高電圧を得る
よう可変リアクトルＬ１〜Ｌ６のインダクタンスが調整
される。すなわち、共振周波数ｆｏは
Ｌを調整することによって直列共振を得ることができる
。ここで、ＬとＣとの閉口線内の直流抵抗をＲとすれば
、共振によって得られる電圧倍数Ｑは。The output voltage of the excitation transformer 71 generated by the voltage regulator 72 is caused by series resonance between the inductance L of the variable reactors L1 to L6 connected in series and the capacitance C of the sample 74, and the voltage is increased between the voltage regulator 72 and the ground 75. The inductance of variable reactors L1 to L6 is adjusted to obtain a high voltage. That is, by adjusting the resonance frequency fo, series resonance can be obtained. Here, if the DC resistance in the closed line between L and C is R, then the voltage multiple Q obtained by resonance is.
変圧器７１の出力電圧Ｖｅは端子２２においてＱ・Ｖｅ
なる電圧になり、高電圧を発生させることができる。The output voltage Ve of the transformer 71 is QVe at the terminal 22.
Therefore, high voltage can be generated.
発生電圧を測定する手段として本実施例では第１図のよ
うに、コンデンサＣ１〜Ｃ６を直列に接続し、コンデン
サＣ６の端子４２を端子２２に接続し、コンデンサＣ１
の端子３１は変流器７を介して励磁変圧器７１の出力端
子７６に接続する。In this embodiment, as a means for measuring the generated voltage, capacitors C1 to C6 are connected in series, the terminal 42 of the capacitor C6 is connected to the terminal 22, and the capacitor C1
The terminal 31 of is connected to the output terminal 76 of the excitation transformer 71 via the current transformer 7.
すなわち、Ｑ−ｖｅなる発生電圧はキャパシタンスＣ１
〜Ｃ６なる直列キャパシタンスを通して流れる電流を変
流器７の二次側の電流計によって読みとるようにいてい
る。すなわち、キャパシタンスＣ１〜Ｃ６を通して流れ
る電流によって、変流器７の端子間（３１〜７６間）電
位を小さくでき、端子１１と端子３１の間の電位差を小
さくできるように構成したものである。この電位差を小
さくすることによる利点と、大きい場合の欠点について
第２図と第３図を用いて説明する。That is, the generated voltage Q-ve is caused by the capacitance C1
The current flowing through the series capacitance C6 is read by an ammeter on the secondary side of the current transformer 7. That is, the current flowing through the capacitances C1 to C6 can reduce the potential between the terminals of the current transformer 7 (between 31 and 76), and the potential difference between the terminals 11 and 31 can be reduced. The advantages of making this potential difference small and the disadvantages of making it large will be explained with reference to FIGS. 2 and 3.
一般に、ユニット１〜６の可変リアクトルは内部の復縁
強化を図るため、絶縁油あるいは、ガスが封入され、例
えば、ユニット１の場合の箱体の側面部は絶縁物で、ま
た、底部と上部は機械強度が要求されるため、金属が用
いられ、端子１１゜１２．３１，３２．はブッシングに
よって導出される。ユニットを積重ねた場合の全体高さ
をできるだけ小さくする必要があり、従って、前述のよ
うに、端子１１−３１間の発生電圧は小さくしなければ
ならない。In general, the variable reactors of Units 1 to 6 are filled with insulating oil or gas to strengthen internal recovery.For example, in the case of Unit 1, the sides of the box are insulating, and the bottom and top are Since mechanical strength is required, metal is used, and the terminals 11°12.31,32. is derived by Bushing. It is necessary to make the overall height of stacked units as small as possible, and therefore, as described above, the voltage generated between terminals 11-31 must be made small.
第２図は発生電圧の測定に分圧コンデンサを用いた場合
の直列共振形高電圧発生器の回路を示すもので、可変リ
アクトルと分圧コンデンサを内蔵したユニット、および
、電源７３、電圧調整器７２、励磁変圧器７１は第１図
と同じ結線である。ユニット１のコンデンサ端子３１は
電圧測定用コンデンサ８０を介して接地７５に接続され
、コンデンサ８０に発生する電圧を測定することによっ
て端子２２の発生電圧を測定するようにしたものであり
、分圧比を正確に求めておけば、誤差のない方法である
。Figure 2 shows the circuit of a series resonant high voltage generator when a voltage dividing capacitor is used to measure the generated voltage. 72, the excitation transformer 71 has the same wiring as in FIG. The capacitor terminal 31 of the unit 1 is connected to the ground 75 via a voltage measuring capacitor 80, and by measuring the voltage generated at the capacitor 80, the voltage generated at the terminal 22 is measured. If it is calculated accurately, it is a method with no errors.
しかし、ユニットを多段に積ねた直列共振形変圧器では
、次のような面倒な問題がある。すなわち、供試品とな
るコンデンサの種類によって、例えば、沿面の抵抗が低
い場合と高い場合とでは共振時のＱが異なり、励磁変圧
器の出力電圧が高くなったり、低くなったりする。これ
を第３図によって説明する。第３図は各ユニットの端子
位置における発生電圧を示したもので、Ｑが大きく場合
は特性Ａ、Ｑが小さい場合は特性已になり、コンデンサ
側はＣ特性のようになる。Ｑが大きい場合の励磁電圧は
Ｖｆとなり、可変リアクトルの端子１３ではｖ３となり
、順次、各ユニットの端子１５．１７，１９，２１では
第３図のような対地電圧となり、端子２２ではＶｍとな
る。一方、コンデンサ端子では端子３１でＶｃとなり、
端子３３ではｖ２なる電圧が発生し最上段の端子２２で
はＶｍとなる。第３図の例ではＶｆとＶｃが同等になる
よう電圧測定用コンデンサ８０の静電容量を送んでいる
。しかし共振時のＱが小さい場合子１３ではｖｌの電圧
となり、特性Ｂのような各端子の発生電圧となる。従っ
て、端子１３の発生電圧■１とコンデンサ端子３３の発
生電圧ｖ２とでは大きな電位差が生じる。この差電圧は
上段になるに従って小さくなるが下段のユニットの端子
では大きな差電圧となりユニット底抜および上部板に取
り付けるブッシング端子は高い絶縁耐力をもつものでな
ければならず、その分だけ発生装置が大形化してしまう
。However, a series resonant transformer in which units are stacked in multiple stages has the following troublesome problems. That is, depending on the type of capacitor used as a sample, for example, the Q at resonance differs depending on whether the creeping resistance is low or high, and the output voltage of the excitation transformer becomes high or low. This will be explained with reference to FIG. FIG. 3 shows the generated voltage at the terminal position of each unit. When Q is large, the characteristic is A, and when Q is small, the characteristic is the same, and on the capacitor side, the characteristic is C. When Q is large, the excitation voltage becomes Vf, becomes v3 at terminal 13 of the variable reactor, and in turn becomes the ground voltage at terminals 15, 17, 19, and 21 of each unit as shown in Figure 3, and becomes Vm at terminal 22. . On the other hand, at the capacitor terminal, terminal 31 becomes Vc,
A voltage v2 is generated at the terminal 33, and a voltage Vm is generated at the terminal 22 at the top. In the example shown in FIG. 3, the capacitance of the voltage measuring capacitor 80 is sent so that Vf and Vc are equal. However, when the Q at resonance is small, the voltage of the element 13 is vl, and the voltage generated at each terminal is as shown in characteristic B. Therefore, a large potential difference occurs between the voltage 1 generated at the terminal 13 and the voltage v2 generated at the capacitor terminal 33. This voltage difference decreases as you move up to the top, but it becomes a large voltage difference at the terminals of the lower units, and the bushing terminals attached to the bottom of the unit and the top plate must have high dielectric strength. It becomes large.
この問題を解決するようにしたのが、第１図の方法であ
りその発生電圧を特性として表わしたのが第４図である
。すなわち、Ｑが小さい場合の可変リアクトル端子電圧
は特性Ｆとなり、コンデンサ端子電圧は変流路を介した
だけなので、特性Ｇとなり、各ユニットにおける端子間
電位差を非常に小さくできる。また、Ｑが小さい場合の
励磁電圧は高くなりＶｇなる電圧となるが、可変リアク
トルの端子電圧は特性Ｄ、コンデンサ端子電圧は特性Ｅ
となり、最下段の端子間に変流器が入っているだけなの
で、両者間ではほぼ同等の発生電圧特性となる。The method shown in FIG. 1 was designed to solve this problem, and FIG. 4 shows the generated voltage as a characteristic. That is, when Q is small, the variable reactor terminal voltage has characteristic F, and since the capacitor terminal voltage only passes through the current transformer path, it has characteristic G, and the potential difference between the terminals in each unit can be made very small. Also, when Q is small, the excitation voltage becomes high and becomes a voltage Vg, but the terminal voltage of the variable reactor is characteristic D, and the capacitor terminal voltage is characteristic E.
Since there is only a current transformer between the terminals at the bottom, the generated voltage characteristics are almost the same between the two.
第５図は電圧校正特性の一例を示しているが、発生器に
標準となる分圧器を別に接続し、その分圧器によって測
定した発生電圧と変流器の二次電流の関係を求めたもの
である。すなわち、電圧ｖｈで電流がＯアンペアとなり
、電流と電圧の関係は直線関係となる。このｖｈが励磁
電圧であり、変流器の二次電流から求めた可変リアクト
ル全段の電圧（第１図の端子１１と端子２２の間の電圧
）と励磁変圧器の出力電圧を測定すれば発生器の発生電
圧を測定することができる。Figure 5 shows an example of voltage calibration characteristics, where a standard voltage divider is separately connected to the generator, and the relationship between the generated voltage measured by the voltage divider and the secondary current of the current transformer is determined. It is. That is, the current becomes O ampere at voltage vh, and the relationship between current and voltage is a linear relationship. This vh is the excitation voltage, and if we measure the voltage across all stages of the variable reactor (voltage between terminal 11 and terminal 22 in Figure 1) obtained from the secondary current of the current transformer and the output voltage of the excitation transformer, The voltage generated by the generator can be measured.
本発明によれば、分圧コンデンサと可変リアクトルを内
蔵したユニットを多段に積ねた場合に生じる可変リアク
トルの端子とコンデンサ端子間の電位差を小さくでき、
ブッシングを小さくできるので、積み上げたユニット高
さ全体を低くすることができる。According to the present invention, it is possible to reduce the potential difference between the terminal of the variable reactor and the terminal of the capacitor that occurs when units containing a voltage dividing capacitor and a variable reactor are stacked in multiple stages.
Since the bushing can be made smaller, the overall height of the stacked units can be reduced.
【図面の簡単な説明】
第１図は本発明の一実施例の回路図、第２図は本発明の
他の実施例を示す回路図、第３図、第４図は本発明の詳
細な説明するための特性図、第５図は本発明の電圧校正
の一例を示す図、第６図は従来の装置の回路図、第７図
は従来の高電圧発生器の回路図である。
１〜６・・・ユニット、７・・・変流路、８・・・電流
計。
兆理士 小川勝馬
Ｖ３）固
舅 ２ 凹
葛Ｊ ロ
ユ ＝−ノ） ４各イ立ｉ →
冨５目
電シ克−[Brief Description of the Drawings] Fig. 1 is a circuit diagram of one embodiment of the present invention, Fig. 2 is a circuit diagram showing another embodiment of the present invention, and Figs. 3 and 4 are detailed diagrams of the present invention. FIG. 5 is a diagram showing an example of voltage calibration according to the present invention, FIG. 6 is a circuit diagram of a conventional device, and FIG. 7 is a circuit diagram of a conventional high voltage generator. 1 to 6...unit, 7...variable flow path, 8...ammeter. Chorishi Ogawa Katsuma V3) Kofu 2 Kokatsu J Royu =-ノ) 4 each i-tachi i → 5th medenshikatsu-
Claims (1)
サとを接続し、直列共振によつて高電圧を発生する装置
において、 絶縁媒体を封入した容器内に可変リアクトルと、電圧測
定用コンデンサとを収納し、前記可変リアクトルの第一
と第二の端子、前記電圧測定用コンデンサの第一と第二
の端子を導出し、前記可変リアクトルの第一の端子に外
部の対地コンデンサを接続し、前記可変リアクトルの第
二の端子を励磁変圧器の高電圧端子に接続し、前記電圧
測定用コンデンサの前記第一の端子は前記可変リアクト
ルの前記第一の端子に接続し、前記電圧測定用コンデン
サの前記第二の端子は変流器を介して前記可変リアクト
ルの前記第二の端子に接続するように構成したことを特
徴とする交流高電圧発生器。 ２、特許請求の範囲第１項において、 可変リアクトルと前記電圧測定用コンデンサの単位ユニ
ットを複数個カスケード接続したことを特徴とする交流
高電圧発生器。[Claims] 1. In a device that connects a reactor formed by winding a coil and a capacitor and generates a high voltage through series resonance, the variable reactor and the voltage are placed in a container sealed with an insulating medium. a measuring capacitor, the first and second terminals of the variable reactor and the first and second terminals of the voltage measuring capacitor are led out, and an external ground capacitor is connected to the first terminal of the variable reactor. the second terminal of the variable reactor is connected to the high voltage terminal of the excitation transformer, the first terminal of the voltage measuring capacitor is connected to the first terminal of the variable reactor, and the second terminal of the variable reactor is connected to the high voltage terminal of the excitation transformer; An AC high voltage generator characterized in that the second terminal of the voltage measuring capacitor is connected to the second terminal of the variable reactor via a current transformer. 2. The AC high voltage generator according to claim 1, characterized in that a plurality of units of a variable reactor and the voltage measuring capacitor are connected in cascade.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24743086A JPS63101775A (en) | 1986-10-20 | 1986-10-20 | Ac high voltage generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24743086A JPS63101775A (en) | 1986-10-20 | 1986-10-20 | Ac high voltage generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63101775A true JPS63101775A (en) | 1988-05-06 |
Family
ID=17163322
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24743086A Pending JPS63101775A (en) | 1986-10-20 | 1986-10-20 | Ac high voltage generator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63101775A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103267933A (en) * | 2013-05-02 | 2013-08-28 | 国家电网公司 | Method for measuring partial discharge in transformer induced voltage testing device |
| CN103278753A (en) * | 2013-05-02 | 2013-09-04 | 国家电网公司 | Device for induced voltage tests on transformers |
| CN104198900A (en) * | 2014-08-04 | 2014-12-10 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Testing device for long term voltage induction and partial discharge measurement test |
-
1986
- 1986-10-20 JP JP24743086A patent/JPS63101775A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103267933A (en) * | 2013-05-02 | 2013-08-28 | 国家电网公司 | Method for measuring partial discharge in transformer induced voltage testing device |
| CN103278753A (en) * | 2013-05-02 | 2013-09-04 | 国家电网公司 | Device for induced voltage tests on transformers |
| CN104198900A (en) * | 2014-08-04 | 2014-12-10 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Testing device for long term voltage induction and partial discharge measurement test |
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