JP6240647B2 - Circuit breaker tripping system - Google Patents
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Description
この発明は、電気回路において、過電流が流れた場合、該電気回路を遮断して保護するサーキットブレーカーに関し、特に超高圧、もしくは高圧電流の電力回路に設け、過電流から回路、もしくは装置を保護する、無障害、自動引き外しシステムに関する。 The present invention relates to a circuit breaker that cuts off and protects an electric circuit when an overcurrent flows in the electric circuit, and in particular, is provided in a power circuit of an ultrahigh voltage or a high voltage current to protect the circuit or the device from the overcurrent. To a fault-free, automatic trip system.
サーキットブレーカーは過電流から保護する機能を有する装置であって、室内の配線のメインスイッチ、分電盤の制御スイッチなどに設け、電気器具を保護する重要な装置である。その主な作用は、短絡からの保護、負荷電流の開閉などを目的とするものである。但し、サーキットブレーカーは一般に６００Ｖ以下の定電圧回路に用いられる。 The circuit breaker is a device having a function of protecting from an overcurrent, and is an important device for protecting an electric appliance by being provided in a main switch for indoor wiring, a control switch for a distribution board, and the like. Its main function is aimed at protection from short circuit, opening / closing of load current and the like. However, the circuit breaker is generally used for a constant voltage circuit of 600V or less.
超高圧、もしくは高圧電圧用のサーキットブレーカー、又はその引き外し手段に関する従来の技術には、例えば台湾実用新案登録Ｍ５０３６２４号公報にサーキットブレーカー及び該サーキットブレーカーを用いた遮断システムが開示される。 As a conventional technology related to a circuit breaker for ultra-high voltage or high voltage or a tripping means thereof, for example, Taiwan Utility Model Registration No. M503624 discloses a circuit breaker and a shut-off system using the circuit breaker.
一般に電子式を採用する自動検知安全防護システムは、過大な電流、もしくは超高圧電圧が流れると、即時電源の供給を遮断するか、もしくは入力する電流または電圧を直接制限し、超高電圧、または過大な電流が流れることによって関連する設備が焼けることを直接避ける。 In general, an automatic detection safety protection system that employs an electronic system will cut off the immediate power supply when an excessive current or an ultra-high voltage flows, or directly limit the input current or voltage, Directly avoid burning associated equipment due to excessive current flow.
然しながら、上述するサーキットブレーカーを使用する場合、以下の如く改善すべき問題が存在する。即ち、一般には低電圧回路にのみ用いられ、使用できる範囲が狭い。また、超高圧、または高電圧回路に用いる場合は、それぞれの電子部品の防護実行の動作を維持するために外部から電力を供給する。また、災害や予期せぬ事態が発生し、外部からの電力の供給が止まり、もしくは引き下げ手段が起動してサーキットブレーカーが本来の引き下げの動作を行うことができなくなり、サーキットブレーカー自体、またはこれに接続する関連設備が焼けてしまう。 However, when the circuit breaker described above is used, there are problems to be improved as follows. That is, it is generally used only for low voltage circuits, and the usable range is narrow. In addition, when used in an ultrahigh voltage or high voltage circuit, electric power is supplied from the outside in order to maintain the protection execution operation of each electronic component. In addition, a disaster or unexpected situation occurs, the external power supply stops, or the lowering means is activated and the circuit breaker cannot perform the original lowering operation. The related equipment to be connected is burnt.
この発明は、外部からの電気の供給を受けることなく引き下げの動作を行うことのできるサーキットブレーカーの自動引き外しシステムを提供することを課題とする。 It is an object of the present invention to provide an automatic circuit breaker tripping system that can perform a pulling-down operation without receiving external power supply.
そこで、本発明者は従来の技術に見られる欠点に鑑み鋭意研究を重ねた結果、ブレーカーの無障害自動引き外しシステムは、電圧値が６００Ｖより大きい電力回路と、出力する電流を下げる電流制御手段を含み、該電力回路に設ける少なくとも１以上の電流検知手段と、該電流検知手段に電気的に接続し、選択的に該電力回路を遮断する少なくとも１以上の遮断スイッチと、該電流検知手段に直列で接続するとともに、電流の設定値を設け、かつ該電流制限手段の出力する電流が該設定値を越えた場合に該遮断スイッチを駆動して該電力回路を遮断する少なくとも１以上の寸動スイッチと、該遮断スイッチの一方の側に設ける連動手段と、を含んでなるサーキットブレーカーの自動引き外しシステムサーキットブレーカーの自動引き外しシステムによって課題を解決できる点に鑑み、係る知見に基づいて本発明を完成させた。 Therefore, the present inventor has conducted intensive research in view of the drawbacks found in the prior art. As a result, the fault-free automatic trip system of the breaker has a power circuit having a voltage value greater than 600 V and current control means for reducing the output current. Including at least one current detection means provided in the power circuit, at least one cut-off switch electrically connected to the current detection means and selectively cut off the power circuit, and the current detection means At least one or more inchings that are connected in series, set a current set value, and drive the cut-off switch to cut off the power circuit when the current output from the current limiting means exceeds the set value A circuit breaker automatic trip system comprising: a switch; and interlocking means provided on one side of the shut-off switch. In view of that it can solve the problem by arm, and completed the present invention based on the finding.
以下この発明について説明する。請求項１に記載する超高圧及び高圧サーキットブレーカーの無障害自動引き外しシステムは、
電圧値が６００Ｖより大きい電力回路と、
出力する電流を下げる電流制御手段を含み、該電力回路に設ける少なくとも１以上の電流検知手段と、
該電流検知手段に電気的に接続し、選択的に該電力回路を遮断する少なくとも１以上の遮断スイッチと、
該電流検知手段に直列で接続するとともに、電流の設定値を設け、かつ該電流制限手段の出力する電流が該設定値を越えた場合に該遮断スイッチを駆動して該電力回路を遮断する少なくとも１以上の寸動スイッチと、
該遮断スイッチの一方の側に設ける連動手段と、を含んでなる。
The present invention will be described below. The ultra-high pressure and high pressure circuit breaker no-fault automatic trip system according to claim 1 is:
A power circuit having a voltage value greater than 600V,
Current control means for reducing the output current, and at least one current detection means provided in the power circuit;
At least one cutoff switch that is electrically connected to the current sensing means and selectively shuts off the power circuit;
The current detecting means is connected in series, and a set value of current is provided, and when the current output from the current limiting means exceeds the set value, the cutoff switch is driven to cut off the power circuit. One or more inching switches,
Interlocking means provided on one side of the cutoff switch.
請求項２に記載する超高圧及び高圧サーキットブレーカーの無障害自動引き外しシステムは、請求項１における寸動スイッチが感熱部材を含み、該感熱部材が熱を蓄積して個体膨張か、気体膨脹か、液体膨張か、もしくは弾力膨張、弾力駆動の内の任意の一の方式で変化が発生して連動手段を駆動する。 The fault-free automatic trip system for an ultra-high pressure and high-pressure circuit breaker according to claim 2, wherein the inching switch according to claim 1 includes a heat-sensitive member, and the heat-sensitive member accumulates heat to cause individual expansion or gas expansion. Then, a change occurs in any one of liquid expansion, elastic expansion, and elastic driving to drive the interlocking means.
請求項３に記載する超高圧及び高圧サーキットブレーカーの無障害自動引き外しシステムは、請求項１における電流検知手段が変流器であって、かつ該電流検知手段を設ける数が３つの場合に該遮断スイッチが三相ブレーカーとなり、該電力回路の電圧が１ＫＶから５０３ＫＶである。 According to a third aspect of the present invention, there is provided a fault-free automatic trip system for an ultrahigh voltage and high voltage circuit breaker when the current detection means in claim 1 is a current transformer and the number of the current detection means is three. The cutoff switch becomes a three-phase breaker, and the voltage of the power circuit is 1 KV to 503 KV.
請求項４に記載する超高圧及び高圧サーキットブレーカーの無障害自動引き外しシステムは、請求項１における連動手段が該遮断スイッチの一方の側に設けられ、かつ選択的に該遮断スイッチに抵触する連動桿体を含む。 A fault-free automatic trip system for an ultra-high voltage and high-voltage circuit breaker according to claim 4, wherein the interlocking means in claim 1 is provided on one side of the shut-off switch and selectively interlocks with the shut-off switch. Includes the enclosure.
この発明は外部からの電気の供給を受けることなく引き下げの動作を行うことのできるサーキットブレーカーの自動引き外しシステムを提供するものであって、ブレーカーの無障害自動引き外しシステムは、電圧値が６００Ｖより大きい電力回路と、出力する電流を下げる電流制御手段を含み、該電力回路に設ける少なくとも１以上の電流検知手段と、該電流検知手段に電気的に接続し、選択的に該電力回路を遮断する少なくとも１以上の遮断スイッチと、該電流検知手段に直列で接続するとともに、電流の設定値を設け、かつ該電流制限手段の出力する電流が該設定値を越えた場合に該遮断スイッチを駆動して該電力回路を遮断する少なくとも１以上の寸動スイッチと、該遮断スイッチの一方の側に設ける連動手段と、を含んでなる。かかるシステムの構造と特徴を説明するために、具体的な実施例を挙げ、図面を参照にして如何に説明する。 The present invention provides an automatic tripping system for a circuit breaker capable of performing a pulling-down operation without receiving an external power supply. The faultless automatic tripping system for a breaker has a voltage value of 600V. A power control unit that includes a larger power circuit and a current control unit that reduces an output current; and at least one current detection unit provided in the power circuit; electrically connected to the current detection unit; and selectively shuts off the power circuit At least one cutoff switch that is connected in series to the current detection means, and a current set value is provided, and the cutoff switch is driven when the current output from the current limiting means exceeds the set value. And at least one inching switch for shutting off the power circuit, and interlocking means provided on one side of the shutoff switch. In order to explain the structure and features of such a system, specific examples will be given and described with reference to the drawings.
図１、２に開示するように、この発明によるサーキットブレーカーは、電圧値が６００Ｖから５０３，０００Ｖの電力回路１と、少なくとも１以上の電流検知装置３と、少なくとも１以上の遮断スイッチ２と、寸動スイッチ４と、連動手段５とを含んでなる。 As disclosed in FIGS. 1 and 2, the circuit breaker according to the present invention includes a power circuit 1 having a voltage value of 600 V to 503,000 V, at least one current detection device 3, and at least one cutoff switch 2. The inching switch 4 and the interlocking means 5 are included.
電流検知手段３は、電力回路１に設けられる変流器（ＣＴ）であって、また電流検知手段３は出力する電流を下げる電流制御手段３１を含む。 The current detection means 3 is a current transformer (CT) provided in the power circuit 1, and the current detection means 3 includes a current control means 31 that reduces the output current.
遮断スイッチ２は、電流検知手段３に電気的に接続し、選択的に電力回路１の遮断を行う。また遮断スイッチ２の一方の側には、遮断スイッチ２をリモートコントロールするための制御ボックス２１を具える。 The cut-off switch 2 is electrically connected to the current detection means 3 and selectively cuts off the power circuit 1. A control box 21 for remotely controlling the cutoff switch 2 is provided on one side of the cutoff switch 2.
寸動スイッチ４は、電流検知手段３に直列に接続し、電流制御手段３１の出力する電流が寸動スイッチ４に設定された設定値より大きい場合は遮断スイッチ２を駆動して電力スイッチ１を遮断する。 The inching switch 4 is connected in series to the current detecting means 3, and when the current output from the current control means 31 is larger than the set value set in the inching switch 4, the cutoff switch 2 is driven to switch the power switch 1. Cut off.
また、寸動スイッチ４は感熱部材４１を含み、熱が蓄積されて変化の動作が発生すると連動手段５を駆動する。即ち、感熱部材４１は、熱が蓄積されると個体膨張か、気体膨脹か、液体変化か、弾力駆動の内の任意の一の方式で変化が発生して連動手段を駆動する。 The inching switch 4 includes a heat sensitive member 41, and drives the interlocking means 5 when heat is accumulated and a change operation occurs. That is, when heat is accumulated, the heat-sensitive member 41 is driven by any one of elastic expansion, solid expansion, gas expansion, liquid change, and elastic driving to drive the interlocking means.
連動手段５は、遮断スイッチ２の一方の側に設けられて選択的に遮断スイッチ２に抵触する連動桿体５１を含む。 The interlocking means 5 includes an interlocking casing 51 that is provided on one side of the cutoff switch 2 and selectively contacts the cutoff switch 2.
図１から図３に開示するように、本発明のサーキットブレーカーは超高圧、もしくは高圧の電力システムに設けられ、かつ電気関連法規の定める規格によって定義される。高圧とは、電圧値が６００Ｖから１０００Ｖの間にあることを指し、超高圧とは電圧値が１０００Ｖを越えることを指す。超高圧は、発電所、変電所、配電用変電所、架空送電用の鉄塔などによく現れる。この種の超高圧、もしくは高圧の電力システムにはいずれも自動安全防護装置及びリモートコントロール制御の制御ボックス２を具える。但し、そのほとんどが直流で、かつ電子式制御方式である。これに比してこの発明によるサーキットブレーカーの無障害システムは特に外部からの電力の供給を必要としない電源遮断システムであって、即ち、災害などの発生によって電源の制御が失効した場合においても、正常に遮断スイッチ２を起動して、即時スタンバイ状態とし、継続して作動するものである。 As disclosed in FIGS. 1 to 3, the circuit breaker of the present invention is provided in an ultrahigh voltage or high voltage power system and is defined by a standard defined by electrical laws and regulations. High voltage means that the voltage value is between 600V and 1000V, and ultra high voltage means that the voltage value exceeds 1000V. Ultra high voltage often appears in power stations, substations, distribution substations, overhead power transmission towers, and so on. Each of this type of ultra-high voltage or high-voltage power system includes an automatic safety protection device and a control box 2 for remote control control. However, most of them are direct current and electronic control systems. In contrast to this, the fault-free system of the circuit breaker according to the present invention is a power shut-off system that does not require any external power supply, that is, even when the control of the power source expires due to the occurrence of a disaster or the like, The shut-off switch 2 is normally activated to immediately enter a standby state and continuously operates.
実際に使用する場合、保護機構７の超高圧、又は高圧の電力回路１に、少なくとも１以上の遮断スイッチ２と電流検知手段３とを設ける。即ち、高圧電力回路において必要とする変流器であって、また電流検知手段３内の電流制御手段３１によって、異なる比例に基づいて出力する電流を下げて、寸動スイッチ４の電流値を２．５Ａから３Ａの間に維持して定格化出力を達成する。このため、さらにはその後の製造及び使用に便利になる。 In actual use, at least one cutoff switch 2 and current detection means 3 are provided in the ultrahigh voltage or high voltage power circuit 1 of the protection mechanism 7. That is, it is a current transformer required in the high-voltage power circuit, and the current control means 31 in the current detection means 3 lowers the output current based on different proportions, so that the current value of the inching switch 4 is 2 Maintain between 5A and 3A to achieve rated output. This further facilitates subsequent manufacture and use.
この超高圧、又は高圧の電力回路１は、正常な状況下にあって従来の自動安全保護機構７を受け継ぎ、電流の制限、または電圧の安全性の検知などの動作を行うことができる。 This ultra high voltage or high voltage power circuit 1 can carry out operations such as current limitation or voltage safety detection under normal conditions and inheriting the conventional automatic safety protection mechanism 7.
この発明によるサーキットブレーカーの主な効果について言えば、電力回路１が地震を含む複合的な災害に遭遇し、送電線の鉄塔が倒れて短絡が発生した場合、電流が急に増加する状況下で高電圧電力回路１が閉じて地上に落ちて地面に接触し、電流検知手段３にゼロ抵抗の接地状態となり、電流が瞬時に数倍に上がるが、このような状況では一般には回路が瞬時に焼ける。高圧電力回路１は電源の供給を牛たったにも等しくなり、地震の激烈な振動と同時に一般の安全防護引き下げ装置を設けた回路は正常の作動ができなくなる。但し、この発明のサーキットブレーカーは、寸動スイッチ４の感熱部材４１が、この種の電流が激増した状況で発生する大量の熱を感知し、かつ熱の蓄積によって変化の動作を行い、微量の体積の変化が発生して遮断スイッチ２を駆動して出力回路を引き下げる。また、連動桿体５１によって体積の変化で発生した推力を連動桿体３１の他端に伝動して保護機構７を起動し、電力回路１を引き外す。この種の物理的に完成させる機械的動作で超高圧、もしくは高圧電力回路１の引き下げの動作を実現する。しかも、外部からの電力の供給を必要とせず、電源制御を喪失し、瞬時に大電流が流れる状況であっても正常な作動を達成することができる。 Speaking of the main effects of the circuit breaker according to the present invention, when the power circuit 1 encounters a complex disaster including an earthquake and the power transmission tower collapses and a short circuit occurs, the current suddenly increases. The high voltage power circuit 1 is closed and falls to the ground and comes into contact with the ground, and the current detection means 3 is in a grounded state of zero resistance, and the current instantaneously increases several times. Burn. The high-voltage power circuit 1 is just equal to the power supply, and the circuit provided with a general safeguard lowering device cannot operate normally at the same time as the severe vibration of the earthquake. However, in the circuit breaker of the present invention, the heat-sensitive member 41 of the inching switch 4 senses a large amount of heat generated in a situation where this type of current is greatly increased, and performs a change operation due to the accumulation of heat. A change in volume occurs and the shut-off switch 2 is driven to pull down the output circuit. Further, the thrust generated by the change in volume by the interlocking casing 51 is transmitted to the other end of the interlocking casing 31 to activate the protection mechanism 7, and the power circuit 1 is pulled off. The operation of pulling down the ultra high voltage or high voltage power circuit 1 is realized by this kind of physically completed mechanical operation. Moreover, it is possible to achieve normal operation even in a situation where a large amount of current flows instantaneously without losing power control without requiring external power supply.
図４に開示するように、この発明は、一つの連動手段５ａで同時に複数の遮断スイッチ２ａと、電力システムが本来具える保護機構７ａを駆動することができる。一般の電力回路１ａは単相で、遮断スイッチ２ａに複数の電流検知手段３ａを設ける。引用する単一セットが単相ブレーカーである（それぞれの電力回路１ａにそれぞれ単一セットを設け、３セット引用することで、３相になる）。それぞれの単相は、やはり単一の引き外しブレーカーであって、電力回路１ａ上の電流検知手段３ａの電流が突然増加した場合、寸動スイッチ４ａが電力回路１ａの遮断スイッチ２ａを駆動しても，同時に連動手段５ａが全体（３相）の遮断スイッチ２ａ及び保護機構７ａが関連する設備を同期して引き外して全体の安全性を増加させる。しかも、連動手段５ａの動作は、電気関連法規に符合し、５０ｍｓ内に同期引き外しを完成させるという要求を満たすことができる。超高圧電力システムの重要性とその影響の面を考えると、連鎖保護引き外し機構を正常に運用する以外に、作動のための如何なる電源も必要としない無障害自動引き外しシステムを以って、超高圧電力システム設備の最後の保護とする必要がある。特に、３４５ＫＶの超高圧電力システムにおいては、これを以って電源供給システムの全面的な崩壊を防ぐ必要がある。 As disclosed in FIG. 4, in the present invention, a plurality of cutoff switches 2a and a protection mechanism 7a originally provided in the power system can be simultaneously driven by one interlocking means 5a. The general power circuit 1a has a single phase, and a plurality of current detection means 3a are provided in the cutoff switch 2a. A single set to be cited is a single-phase breaker (a single set is provided for each power circuit 1a, and three sets are cited to form three phases). Each single phase is also a single trip breaker, and when the current of the current detection means 3a on the power circuit 1a suddenly increases, the inching switch 4a drives the cutoff switch 2a of the power circuit 1a. At the same time, the interlocking means 5a synchronizes and disconnects the entire (three-phase) cutoff switch 2a and the protection mechanism 7a, thereby increasing the overall safety. In addition, the operation of the interlocking means 5a can meet the electrical regulation and meet the requirement of completing the synchronization trip within 50 ms. Considering the importance of the ultra high voltage power system and its impact, in addition to operating the chain protection trip mechanism normally, with a fault-free automatic trip system that does not require any power source for operation, It needs to be the last protection of the ultra high voltage power system equipment. In particular, in a 345 KV ultra high voltage power system, it is necessary to prevent the entire power supply system from collapsing.
別途、この発明の無障害自動引き外しシステムは、主に高圧及び超高圧の領域に使用されるものではあるが、但し低圧の領域（例えば４８０Ｖ）にも適用することができ、電力回路１に如何なる種類のサーキットブレーカーを用いようと、いずれ４もこの発明のシステムを最終的な防護手段とし、電力供給システムの安全性を確保することができる。 Separately, the fault-free automatic trip system of the present invention is mainly used in the high voltage and ultra high voltage regions, but can also be applied to the low voltage region (for example, 480 V). Regardless of what kind of circuit breaker is used, any 4 can use the system of the present invention as a final protection means to ensure the safety of the power supply system.
以上述べたように、この発明によるシステムは、次に掲げる利点を具える。即ち、超高圧及び高圧電力回路に適用することができる。また。如何なる状況であろうと、完全に機械式の物理的な原理で引き外しの動作を行うことができ、外部からの電力の供給を必要とせず、電流が急増して設定値に至ると、正常に作動する。 As described above, the system according to the present invention has the following advantages. That is, it can be applied to ultra-high voltage and high voltage power circuits. Also. Under any circumstances, it is possible to perform the tripping operation based on a completely mechanical physical principle, and it is not necessary to supply power from the outside. Operate.
１ 電力回路
１ａ 電力回路
２ 遮断スイッチ
２ａ 遮断スイッチ
２１ 制御ボックス
３ 電流検知手段
３ａ 電流検知手段
３１ 電流制御手段
４ 寸動スイッチ
４ａ 寸動スイッチ
４１ 感熱部材
５ 連動手段
５ａ 連動手段
５１ 連動桿体
７ 保護機構
７ａ 保護機構
DESCRIPTION OF SYMBOLS 1 Power circuit 1a Power circuit 2 Cutoff switch 2a Cutoff switch 21 Control box 3 Current detection means 3a Current detection means 31 Current control means 4 Inching switch 4a Inching switch 41 Thermal member 5 Interlocking means 5a Interlocking means 51 Interlocking housing 7 Protection Mechanism 7a Protection mechanism
Claims (2)
前記電力回路に設けられて前記電力回路に流れる電流を検知する電流検知手段と、
前記電流検知手段に電気的に接続し、選択的に前記電力回路を遮断する少なくとも１以上の遮断スイッチと、
前記遮断スイッチの一方の側に設けられ、かつ選択的に前記遮断スイッチに抵触する連動桿体を含む連動手段と、
前記電流検知手段に直列で接続するとともに、前記電流検知手段から出力される電流が予め設定された電流の設定値を越えた場合に、前記連動桿体を駆動して前記電力回路を遮断する寸動スイッチと、
前記電力回路と保護対象である電気器具との間に配置され、前記電力回路と前記電気器具とを引き外す機構を有する保護機構と、を備え、
前記電流検知手段は、前記電力回路に設けられる変流器であって、出力電流を下げる電流制御手段を含んでおり、
前記寸動スイッチが感熱部材を含み、該感熱部材は、熱を蓄積して固体膨張、気体膨脹および液体膨張の内の任意の一の方式で変化が発生し、
前記感熱部材は、前記連動桿体に接続され、前記連動桿体は前記遮断スイッチと前記保護機構とに接続され、
前記電力回路が複合的な災害に遭遇して短絡が発生した場合、前記感熱部材が大量の熱を感知し、かつ熱の蓄積によって体積の変化が発生し、
前記感熱部材の前記体積の変化で前記連動桿体に推力を発生させ、
前記連動桿体が前記遮断スイッチを駆動して前記電力回路を遮断するとともに、前記連動桿体が前記保護機構を起動し、前記保護機構が前記電力回路と前記電気器具とを引き外す
ことを特徴とする超高圧及び高圧サーキットブレーカーの無障害自動引き外しシステム。 A power circuit having a voltage value greater than 600V,
Current detection means provided in the power circuit for detecting a current flowing in the power circuit ;
At least one cutoff switch that is electrically connected to the current sensing means and selectively shuts off the power circuit;
Interlocking means including an interlocking body provided on one side of the shutoff switch and selectively conflicting with the shutoff switch;
It is connected in series to the current detection means, and when the current output from the current detection means exceeds a preset current value, the interlock casing is driven to cut off the power circuit. Dynamic switch,
A protection mechanism disposed between the power circuit and the electrical appliance to be protected, and having a mechanism for pulling off the power circuit and the electrical appliance,
The current detection means is a current transformer provided in the power circuit, and includes current control means for reducing an output current,
The inching switch includes a heat sensitive member that accumulates heat and changes in any one of solid expansion, gas expansion, and liquid expansion,
The heat sensitive member is connected to the interlocking housing, and the interlocking housing is connected to the cutoff switch and the protection mechanism,
When the power circuit encounters a complex disaster and a short circuit occurs, the heat sensitive member senses a large amount of heat, and a change in volume occurs due to heat accumulation,
The thrust is generated in the interlocking housing by the change in the volume of the heat sensitive member,
With blocking the power circuit the interlocking rod drives the said isolation switch, said interlocking rod starts the protection mechanism, removing the protection mechanism pulls the said appliance and the power circuit A feature-free automatic trip system for ultra-high pressure and high-pressure circuit breakers.
前記電流検知手段が変流器であって、かつ該電流検知手段を設ける数が３つの場合に該遮断スイッチが三相ブレーカーとなり、該電力回路の電圧が１ｋＶから５０３ｋＶである
ことを特徴とする超高圧及び高圧サーキットブレーカーの無障害自動引き外しシステム。 In the fault-free automatic trip system for the ultra-high pressure and high-pressure circuit breaker according to claim 1,
When the current detection means is a current transformer and the number of the current detection means is three, the cutoff switch becomes a three-phase breaker, and the voltage of the power circuit is 1 kV to 503 kV. A fault-free automatic trip system for ultra-high pressure and high-pressure circuit breakers.
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