JP2000294067A - Automatic high voltage switch device - Google Patents
Automatic high voltage switch deviceInfo
- Publication number
- JP2000294067A JP2000294067A JP11104077A JP10407799A JP2000294067A JP 2000294067 A JP2000294067 A JP 2000294067A JP 11104077 A JP11104077 A JP 11104077A JP 10407799 A JP10407799 A JP 10407799A JP 2000294067 A JP2000294067 A JP 2000294067A
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- automatic
- switch
- power supply
- power
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000004891 communication Methods 0.000 claims description 2
- 238000000605 extraction Methods 0.000 claims description 2
- 239000000284 extract Substances 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 6
- 238000012423 maintenance Methods 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
Landscapes
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
- Keying Circuit Devices (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、配電系統の連係点
に設置され開閉器本体、遠方制御器、電源装置を備えた
高圧自動開閉装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a high-voltage automatic switchgear installed at a connection point of a distribution system and having a switch body, a remote controller, and a power supply.
【０００２】[0002]
【従来の技術】従来の技術の一例を図において説明す
る。図３は、従来の高圧自動開閉装置の構成図である。
高圧自動開閉装置は自動開閉器の動作を遠方制御するた
めの通信方式として、高圧結合器を使用する高圧配電線
搬送方式を用い、配電系統から高圧需要家に電力を分岐
・供給する。前記高圧自動開閉装置は、主に開閉器本体
３０４、電源装置３０３ａ、３０３ｂ、遠方制御器３１
５から構成され、開閉器本体３０４は、自動開閉器３０
１ａ、３０１ｂと、主回路ブッシング３１３ａ、３１３
ｂおよび電源装置用高圧引出端子３０６ａ、３０６ｂか
ら構成され、一つの筐体に収納または固定されている。
電源装置３０３ａ、３０３ｂは、それぞれ電源変圧器３
０７ａ、３０７ｂと、高圧結合器３０８ａ、３０８ｂと
から構成される。2. Description of the Related Art An example of a conventional technique will be described with reference to the drawings. FIG. 3 is a configuration diagram of a conventional high-pressure automatic switching device.
The high-voltage automatic switchgear uses a high-voltage distribution line transport method using a high-voltage coupler as a communication method for remotely controlling the operation of the automatic switch, and branches and supplies power from the power distribution system to the high-voltage customers. The high-voltage automatic switching device mainly includes a switch body 304, power supply devices 303a and 303b, a remote controller 31.
5, the switch body 304 is provided with the automatic switch 30
1a, 301b and main circuit bushings 313a, 313
b and the high-voltage extraction terminals 306a and 306b for the power supply device, and are housed or fixed in one housing.
The power supply devices 303a and 303b are respectively connected to the power transformer 3
07a, 307b and high-voltage couplers 308a, 308b.
【０００３】開閉器本体３０４の筐体外には、手動開閉
器３０２が配置され、自動開閉器３０１ａ、３０１ｂお
よび手動開閉器３０２の一端は、母線３０５によりそれ
ぞれ接続されている。自動開閉器３０１ａ、３０１ｂの
他端はそれぞれ、主回路ブッシング３１３ａ、３１３ｂ
および電源装置用高圧引出端子３０６ａ、３０６ｂに接
続され、開閉器本体３０４の外に引き出され、手動開閉
器３０２の他端には高圧需要家の引き込み線が接続され
る。主回路ブッシング３１３ａ、３１３ｂはそれぞれ異
なる配電系統に接続され、電源装置用高圧引出端子３０
６ａ、３０６ｂは、電源装置３０３ａ、３０３ｂの一次
側の高圧ケーブルと着脱可能なように接続されている。
電源装置３０３ａ、３０３ｂの二次側は、制御ケーブル
３１７によって、遠方制御器３１５に接続されている。[0003] A manual switch 302 is disposed outside the housing of the switch body 304, and one ends of the automatic switches 301 a and 301 b and the manual switch 302 are connected to each other by a bus 305. The other ends of the automatic switches 301a and 301b are connected to main circuit bushings 313a and 313b, respectively.
The power switch is connected to the power supply high-voltage outlet terminals 306a and 306b, and is drawn out of the switch body 304. The other end of the manual switch 302 is connected to a service line of a high-voltage consumer. The main circuit bushings 313a and 313b are connected to different power distribution systems, respectively, and
6a and 306b are detachably connected to the high voltage cables on the primary side of the power supply devices 303a and 303b.
The secondary sides of the power supply devices 303a and 303b are connected to a remote controller 315 by a control cable 317.
【０００４】電源変圧器３０７ａ、３０７ｂは、遠方制
御器３１５に対して、低圧電源の供給を行い、また高圧
結合器３０８ａ、３０８ｂは、遠方制御器に対し高圧配
電線から抽出した遠方制御信号を供給する。遠方制御器
３１５は、前記低圧電源と前記遠方制御信号により、自
動開閉器３０１ａ、３０１ｂに対して図中の破線に示す
ように開閉制御を行う。The power transformers 307a and 307b supply low-voltage power to the remote controller 315, and the high-voltage couplers 308a and 308b transmit remote control signals extracted from the high-voltage distribution line to the remote controllers. Supply. The remote controller 315 controls the automatic switches 301a and 301b to open and close according to the low-voltage power supply and the remote control signal as shown by the broken lines in the drawing.
【０００５】配電系統においては、上記のような高圧自
動開閉装置を異なる変電所から供給される２系統の連係
点で設置することがある。このような使用状態では、遠
方制御器３１５と自動開閉器３０１ａ、３０１ｂの電源
および遠方制御信号を確保するために、通常はどちらの
系統も充電されているので、電源装置３０３ａ、３０３
ｂのどちらか一方があればよい。しかし、系統の保守点
検時、事故時など、いずれか片側の系統しか充電されな
い場合があり、このような状況に備えて、両側の系統に
それぞれ同一の電源装置３０３ａ、３０３ｂ２台を設置
していた。In a distribution system, the above-described high-voltage automatic switchgear may be installed at a link point between two systems supplied from different substations. In such a use state, both systems are normally charged in order to secure the power of the remote controller 315 and the automatic switches 301a and 301b and the remote control signal.
It suffices if there is either one of b. However, there is a case where only one side of the system is charged at the time of maintenance and inspection of the system, at the time of an accident, and the like, and in order to prepare for such a situation, two identical power supply devices 303a and 303b are installed on both sides of the system. .
【０００６】[0006]
【発明が解決しようとする課題】しかしながら、同一の
電源装置を２台必要とすることは、コストアップの要因
となっており、また大きなスペースが必要で、高圧自動
開閉装置全体を小型化することが困難であった。However, the necessity of two identical power supply units causes an increase in cost, requires a large space, and reduces the size of the high-voltage automatic switchgear as a whole. Was difficult.
【０００７】本発明は高圧自動開閉装置において、電源
装置を１台として、安価で、コンパクトな開閉装置を提
供することを目的とする。SUMMARY OF THE INVENTION It is an object of the present invention to provide an inexpensive and compact switchgear using a single power supply in a high-voltage automatic switchgear.
【０００８】[0008]
【課題を解決するための手段】本発明の請求項１および
請求項２に係る高圧自動開閉装置では、上記の課題を解
決するために、２系統の配電系統の内、いずれかと接続
されるような双投開閉器を開閉器本体の筐体内に設け
る。この双投開閉器は、双投開閉部と、この双投開閉部
を切り替え動作させる自動操作機構と、この自動操作機
構を電圧有りの配電系統に切り替えさせる自動制御回路
と、この自動制御回路に電源を供給する電源変圧器で構
成される。一方、遠方制御器および開閉器本体の自動開
閉器に電源を供給する電源変圧器と高圧結合器を１台の
電源装置として、同一筐体内に収納しかつ開閉器本体の
筐体外に配置し、この電源装置の筐体から引き出した高
圧ケーブルを、開閉器本体の筐体に設けられかつ双投開
閉器の一端に接続された電源装置用高圧引出部に接続す
る。According to the first and second aspects of the present invention, in order to solve the above-mentioned problems, the high-voltage automatic switching device is connected to one of two power distribution systems. A double-throw switch is provided in the housing of the switch body. The double-throw switch includes a double-throw switch, an automatic operation mechanism for switching the double-throw switch, an automatic control circuit for switching the automatic operation mechanism to a voltage distribution system, and an automatic control circuit. It consists of a power transformer that supplies power. On the other hand, the power supply transformer and the high-voltage coupler for supplying power to the remote controller and the automatic switch of the switch body are housed in the same housing as one power supply device and arranged outside the housing of the switch body, A high-voltage cable drawn out of the housing of the power supply device is connected to a high-voltage drawer for the power supply device provided in the housing of the switch body and connected to one end of the double-throw switch.
【０００９】このようにすると、電源装置を接続した双
投開閉器が、充電された系統側に自動的に切り替わるこ
とによって、電源装置は常に充電された系統に接続され
る。従って、従来２系統の配電系統にそれぞれ必要だっ
た電源装置が共通の１台ですみ、コンパクトな高圧自動
開閉装置を実現できる。With this configuration, the double-throw switch connected to the power supply device is automatically switched to the charged system side, so that the power supply device is always connected to the charged system. Therefore, only one power supply unit, which is conventionally required for each of the two distribution systems, can be used in common, and a compact high-voltage automatic switchgear can be realized.
【００１０】本発明の請求項１および請求項３に係る高
圧自動開閉装置では、電源変圧器および高圧結合器を開
閉器本体の筐体内に収納し、筐体内で双投開閉器と接続
する。このようにすると、電源装置の筐体や高圧ケーブ
ルや電源装置用高圧引出部が不要となり、運用において
も電源装置の接続作業が不要なものとできる。In the high-voltage automatic switchgear according to the first and third aspects of the present invention, the power transformer and the high-voltage coupler are housed in the housing of the switch body, and are connected to the double-throw switch in the housing. This eliminates the need for the housing of the power supply device, the high-voltage cable, and the high-voltage lead-out section for the power supply device, thereby making it unnecessary to connect the power supply device during operation.
【００１１】[0011]
【発明の実施の形態】以下に本発明の請求項１および請
求項２に記載の特徴を有する一実施の形態例を図を用い
て説明する。図１は、本発明の一例を示す高圧自動開閉
装置の構成図であり、主に双投開閉器１１１をその内部
に設けた開閉器本体１０４、電源装置１０３、遠方制御
器１１５から構成され、これらの基本構成、接続は従来
の技術例と同様である。双投開閉器１１１は、双投開閉
部１１６、自動操作機構１１０、自動制御回路１１２、
電源変圧器１０９ａ、１０９ｂから構成される。双投開
閉部１１６は、ａ、ｂ、ｃ端子の３つの端子を持ち、そ
のｃ端子がａ端子、ｂ端子のいずれかに接続するように
切り替わる開閉器である。双投開閉部１１６のａ端子、
ｂ端子は、自動開閉器１０１ａ、１０１ｂが接続された
系統側に各々接続し、ｃ端子は電源装置用高圧引出部１
０６に接続する。電源装置用高圧引出部１０６は、電源
装置１０３と着脱可能な高圧ケーブルにて接続されてい
る。電源変圧器１０９ａ、１０９ｂの一次側はそれぞれ
自動開閉器１０１ａ、１０１ｂの系統側に接続し、その
二次側はともに自動制御回路１１２に接続する。自動制
御回路１１２は、２系統の配電系統の充電の有無に対応
して自動操作機構１１０に対し操作電源を供給する。ま
た、自動操作機構１１０は、その動作により前記双投開
閉部１１６の接続切り替え動作をさせる。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention having the features described in claims 1 and 2 will be described below with reference to the drawings. FIG. 1 is a configuration diagram of a high-voltage automatic switching device showing an example of the present invention, which mainly includes a switch body 104 having a double-throw switch 111 provided therein, a power supply device 103, and a remote controller 115. These basic configurations and connections are the same as in the prior art. The double-throw switch 111 includes a double-throw switch 116, an automatic operation mechanism 110, an automatic control circuit 112,
It is composed of power transformers 109a and 109b. The double throw opening / closing section 116 is a switch that has three terminals a, b, and c, and switches so that the c terminal is connected to one of the a terminal and the b terminal. A terminal of the double throw opening / closing section 116,
The terminal b is connected to the side of the system to which the automatic switches 101a and 101b are connected, and the terminal c is connected to the high voltage drawer 1 for the power supply device.
06. The power supply device high-voltage lead-out section 106 is connected to the power supply device 103 by a detachable high-voltage cable. The primary sides of the power transformers 109a and 109b are connected to the system sides of the automatic switches 101a and 101b, respectively, and the secondary sides thereof are both connected to the automatic control circuit 112. The automatic control circuit 112 supplies operation power to the automatic operation mechanism 110 in accordance with whether or not the two power distribution systems are charged. Further, the automatic operation mechanism 110 causes the double throw opening / closing section 116 to perform a connection switching operation by the operation.
【００１２】以下、双投開閉器１１１の動作について詳
しく説明する。自動操作機構１１０は、自動制御回路１
１２から電源が出力されていないときは、ばねにより双
投開閉部１１６のｃ端子とａ端子を接続させ、自動制御
回路１１２から電源が出力されると、電磁ソレノイドに
よる電磁操作によって前記ばねを蓄勢させるとともに、
双投開閉部１１６のｃ端子とｂ端子を接続させる。自動
制御回路１１２は、電源変圧器１０９ａからの入力がな
く、かつ電源変圧器１０９ｂから入力があるときのみ、
自動操作機構１１０に電源変圧器１０９ｂの出力を供給
する回路である。高圧自動開閉装置全体では、Ａ系統の
み電圧有り、もしくはＡ系統・Ｂ系統両側に電圧がある
とき、自動制御回路１１２から自動操作機構１１０へ電
源が供給されず、双投開閉器１１１はＡ系統側（ａ端
子）に切り替わり、電源装置１０３はＡ系統に接続さ
れ、遠方制御器１１５へ低圧電源および遠方制御信号が
供給される。また、Ｂ系統にのみ電圧がある場合のみ、
自動制御回路１１２から自動操作機構１１０へ電源が供
給され、双投開閉器１１１はＢ系統側（ｂ端子）に切り
替わり、電源装置１０３はＢ系統に接続され、遠方制御
器１１５へ低圧電源および遠方制御信号が供給される。
以上のように、電源装置１０３は双投開閉器１１１を介
して、Ａ系統、Ｂ系統の内、電圧がある側に接続され、
いずれかの系統が充電されない場合でも電源を確保する
ことができる。双投開閉部１１６は、電源装置１０３の
一次側に流れる最大数アンペアの電流を開閉すればよい
ので小容量の開閉器で済み、また双投開閉部１１６の駆
動源となる電源変圧器１０９ａ、１０９ｂの容量も、電
源装置１０３を構成する電源変圧器１０７の容量比べ１
／５程度であり、サイズ的にも１／２程度で対応でき
る。Hereinafter, the operation of the double throw switch 111 will be described in detail. The automatic operation mechanism 110 includes an automatic control circuit 1
When the power is not output from the power supply 12, the c terminal and the a terminal of the double throw opening / closing unit 116 are connected by a spring, and when the power is output from the automatic control circuit 112, the spring is stored by an electromagnetic operation using an electromagnetic solenoid. Along with
The c terminal and the b terminal of the double throw opening / closing section 116 are connected. The automatic control circuit 112 only outputs when there is no input from the power transformer 109a and there is an input from the power transformer 109b.
This circuit supplies the output of the power transformer 109b to the automatic operation mechanism 110. In the high-voltage automatic switching device as a whole, when there is a voltage only in the A system or when there is a voltage on both sides of the A system and the B system, power is not supplied from the automatic control circuit 112 to the automatic operation mechanism 110, and the double throw switch 111 is Side (terminal a), the power supply device 103 is connected to the A system, and the low-voltage power supply and the remote control signal are supplied to the remote controller 115. Also, only when there is a voltage only in the B system,
Power is supplied from the automatic control circuit 112 to the automatic operation mechanism 110, the double throw switch 111 is switched to the B system side (b terminal), the power supply device 103 is connected to the B system, and the low-voltage power supply and the remote A control signal is provided.
As described above, the power supply device 103 is connected to the voltage side of the A system and the B system via the double throw switch 111,
Even if any system is not charged, power can be secured. The double-throw opening / closing unit 116 needs only to open and close a current of a maximum of several amperes flowing to the primary side of the power supply device 103, so that a small-capacity switch is sufficient. The capacity of the power supply transformer 107b is also 1
５, and the size can be reduced to about ２.
【００１３】図２は、本発明の請求項１と請求項３に記
載の特徴を有する一実施の形態例の構成図で、開閉器本
体２０４内に電源変圧器２０７と高圧結合器２０８とを
それぞれ単独の機器として配置した例である。電源変圧
器２０７および高圧結合器２０８は、それぞれ電源装置
切り離し用断路器２１４を介して、双投開閉器２１１に
接続される。ここで電源装置切り離し用断路器２１４
は、配電系統の保守時に電源装置２０３を系統から切り
離すための断路器である。本実施の形態例では、電源装
置の筐体や高圧ケーブルなどが不要となり、より安価で
部品点数の少ないものとできる。また、運用においても
電源装置の接続がなくなるため、保守点検の作業性も向
上できるものとなる。FIG. 2 is a block diagram of an embodiment having the features described in claims 1 and 3 of the present invention. A power transformer 207 and a high-voltage coupler 208 are provided in a switch body 204. This is an example in which each is arranged as a single device. The power transformer 207 and the high-voltage coupler 208 are each connected to the double-throw switch 211 via the power supply disconnecting disconnector 214. Here, the power supply disconnecting disconnector 214
Is a disconnector for disconnecting the power supply device 203 from the power system during maintenance of the power distribution system. In the present embodiment, the housing of the power supply device and the high-voltage cable are not required, so that it is possible to reduce the cost and the number of parts. Further, since the power supply device is not connected during operation, the workability of maintenance and inspection can be improved.
【００１４】[0014]
【発明の効果】以上のように、本発明によれば従来２台
必要だった電源装置が１台となり、コスト・スペースの
削減になり、高圧自動開閉装置のコンパクト化がはかれ
る。As described above, according to the present invention, the number of power supplies required in the conventional two is reduced to one, the cost and space are reduced, and the high-voltage automatic switchgear is made compact.
【図１】本発明請求項１および請求項２の実施の形態例
を示す高圧自動開閉装置の構成図。FIG. 1 is a configuration diagram of a high-pressure automatic opening / closing device according to an embodiment of the present invention.
【図２】本発明請求項１および請求項３の実施の形態例
を示す高圧自動開閉装置の構成図。FIG. 2 is a configuration diagram of a high-pressure automatic opening / closing device according to an embodiment of the present invention.
【図３】従来の技術の一例を示す高圧自動開閉装置の構
成図。FIG. 3 is a configuration diagram of a high-pressure automatic opening / closing device showing an example of a conventional technique.
１０１ａ、１０１ｂ、２０１ａ、２０１ｂ、３０１ａ、
３０１ｂ 自動開閉器 １０２、２０２、３０２ 手動開閉器 １０３、３０３ａ、３０３ｂ 電源装置 １０４、２０４、３０４ 開閉器本体 １０５、２０５、３０５ 母線 １０６、３０６ａ、３０６ｂ 電源装置用高圧引出部 １０７、２０７、３０７ａ、３０７ｂ 電源変圧器 １０８、２０８、３０８ａ、３０８ｂ 高圧結合器 １０９ａ、１０９ｂ、２０９ａ、２０９ｂ 電源変圧器 １１０、２１０ 自動操作機構 １１１、２１１ 双投開閉器 １１２、２１２ 自動制御回路 １１３ａ、１１３ｂ、２１３ａ、２１３ｂ、３１３ａ、
３１３ｂ 主回路ブッシング ２１４ 電源装置切り離し用断路器 １１５、２１５、３１５ 遠方制御器 １１６、２１６ 双投開閉部 １１７、２１７、３１７ 制御ケーブル101a, 101b, 201a, 201b, 301a,
301b Automatic switch 102, 202, 302 Manual switch 103, 303a, 303b Power supply device 104, 204, 304 Switch body 105, 205, 305 Busbar 106, 306a, 306b High voltage draw-out section 107, 207, 307a for power supply 307b Power transformers 108, 208, 308a, 308b High-voltage couplers 109a, 109b, 209a, 209b Power transformers 110, 210 Automatic operation mechanism 111, 211 Double throw switch 112, 212 Automatic control circuits 113a, 113b, 213a, 213b , 313a,
313b Main circuit bushing 214 Power supply disconnecting disconnector 115, 215, 315 Remote controller 116, 216 Double throw switch 117, 217, 317 Control cable
Claims (3)
る遠方制御器と、高圧配電線に接続され、前記自動開閉
器および前記遠方制御器に電源を供給する電源変圧器
と、高圧配電線搬送方式による通信を行うために高圧配
電線を通じて遠方制御信号の注入、抽出を行う高圧結合
器とを備え、高圧配電線の連係点に設置される高圧自動
開閉装置において、前記自動開閉器に接続された２系統
の高圧配電線のいずれかに接続されるように構成した双
投開閉器と前記電源変圧器および前記高圧結合器を接続
し、前記双投開閉器は双投開閉部とこれを切り替え動作
させる自動操作機構と、前記自動操作機構を電圧有りの
配電系統へ接続させるよう動作させる自動制御回路と、
前記２系統の高圧配電系統にそれぞれ接続され、前記自
動制御回路に電源を供給する電源変圧器とを備えること
を特徴とした高圧自動開閉装置。An automatic switch, a remote controller for controlling the automatic switch, a power transformer connected to a high-voltage distribution line and supplying power to the automatic switch and the remote controller; A high-voltage coupler that injects and extracts a remote control signal through a high-voltage distribution line in order to perform communication by a wire transport system, and a high-voltage automatic switching device that is installed at a link point of the high-voltage distribution line. A double-throw switch configured to be connected to one of the two connected high-voltage distribution lines, the power transformer and the high-voltage coupler are connected, and the double-throw switch includes a double-throw switch and An automatic operation mechanism for switching operation, an automatic control circuit that operates to connect the automatic operation mechanism to a voltage distribution system,
A high-voltage automatic switching device, comprising: a power transformer connected to each of the two high-voltage distribution systems and supplying power to the automatic control circuit.
器とを、電源装置として同一の筐体内に収納し、かつ自
動開閉器の筐体外に配置し、前記電源装置の筐体から引
き出した高圧ケーブルが、前記自動開閉器の筐体に設け
られかつ前記双投開閉器の一端に接続された電源装置用
高圧引出部に接続されることを特徴とした高圧自動開閉
装置。2. The power supply transformer and the high-voltage coupler according to claim 1 are housed in the same housing as a power supply device, and are arranged outside a housing of an automatic switch. A high-voltage automatic switching device, wherein the pulled-out high-voltage cable is provided in a casing of the automatic switch and is connected to a high-voltage extraction unit for a power supply device connected to one end of the double-throw switch.
器とを自動開閉器の筐体内に収納し、筐体内で双投開閉
器と接続することを特徴とする高圧自動開閉装置。3. A high-voltage automatic switching device, wherein the power transformer and the high-voltage coupler according to claim 1 are housed in a housing of the automatic switch, and are connected to a double-throw switch in the housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10407799A JP3674023B2 (en) | 1999-04-12 | 1999-04-12 | High pressure automatic switchgear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10407799A JP3674023B2 (en) | 1999-04-12 | 1999-04-12 | High pressure automatic switchgear |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000294067A true JP2000294067A (en) | 2000-10-20 |
| JP3674023B2 JP3674023B2 (en) | 2005-07-20 |
Family
ID=14371099
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10407799A Expired - Fee Related JP3674023B2 (en) | 1999-04-12 | 1999-04-12 | High pressure automatic switchgear |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3674023B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006211759A (en) * | 2005-01-26 | 2006-08-10 | East Japan Railway Co | Ac voltage adjuster |
| CN102969659A (en) * | 2012-11-14 | 2013-03-13 | 四川省电力公司内江电业局 | Anti-misoperation device of ground lead |
| CN103269016A (en) * | 2013-05-24 | 2013-08-28 | 广州供电局有限公司 | Three-phase supply switch box |
| CN110611307A (en) * | 2019-08-10 | 2019-12-24 | 广东长悦电气有限公司 | High-reliability high-voltage operation power supply and low-voltage low-frequency inspection power supply switching system of high-voltage electric fire pump |
-
1999
- 1999-04-12 JP JP10407799A patent/JP3674023B2/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006211759A (en) * | 2005-01-26 | 2006-08-10 | East Japan Railway Co | Ac voltage adjuster |
| JP4671220B2 (en) * | 2005-01-26 | 2011-04-13 | 東日本旅客鉄道株式会社 | AC voltage regulator |
| CN102969659A (en) * | 2012-11-14 | 2013-03-13 | 四川省电力公司内江电业局 | Anti-misoperation device of ground lead |
| CN103269016A (en) * | 2013-05-24 | 2013-08-28 | 广州供电局有限公司 | Three-phase supply switch box |
| CN110611307A (en) * | 2019-08-10 | 2019-12-24 | 广东长悦电气有限公司 | High-reliability high-voltage operation power supply and low-voltage low-frequency inspection power supply switching system of high-voltage electric fire pump |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3674023B2 (en) | 2005-07-20 |
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