JPS605710A - Disconnecting switch with grounding mechanism - Google Patents

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【発明の詳細な説明】 ［発明の技術分野］ 本発明は、絶縁媒体として、たとえばＳＦｓガス等を用
いて機器を構成するガス絶縁開閉装置の計器用変圧器あ
るいは避雷器を主回路から切離すために使用される接地
機構付断路装置に関するものである。[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a method for isolating a voltage transformer or a lightning arrester of a gas-insulated switchgear that uses SFs gas or the like as an insulating medium from a main circuit. This invention relates to a disconnecting device with a grounding mechanism used in

［発明の技術的背景とその問題点］ 従来の計器用変圧器用接地機構付断路器の一例を第１図
に示し説明する。第１図において、Ｌ字形タンク１の下
端には断路用固定接触部２ａを具備した絶縁スペーサ３
ａが取付られている。Ｌ字形タンク１の上端開口に設け
た蓋４の内面］こ、絶縁筒８を介して上方には接地用可
動接触子１４　ｂ＜摺動する接地用可動接触部５が、ま
た下方に１ま断路用固定接触部２ａと対向して断路用可
動接触子１３が摺動する断路用可動接触部６が配置され
るように構成した、中間接触部７を取付けて（入る。[Technical background of the invention and its problems] An example of a conventional disconnector with a grounding mechanism for a voltage transformer is shown in FIG. 1 and will be described. In FIG. 1, an insulating spacer 3 is provided at the lower end of an L-shaped tank 1 with a fixed contact portion 2a for disconnection.
a is installed. The inner surface of the lid 4 provided at the upper end opening of the L-shaped tank 1 is provided with a movable grounding contact 14 b<b> above through the insulating cylinder 8, and a movable grounding contact portion 5 that slides. The intermediate contact part 7 is installed (entered), which is configured such that the movable contact part 6 for disconnection, on which the movable contact part 6 for disconnection, on which the movable contact element 13 for disconnection slides, is disposed facing the fixed contact part 2a for disconnection.

又、絶縁筒８内の蓋４内面には前記接地用可動１娶触部
５と対向する接地用固定接触部９を配置する。Further, on the inner surface of the lid 4 inside the insulating cylinder 8, a fixed grounding contact part 9 is arranged opposite to the grounding movable one-piece contact part 5.

Ｌ字形タンク１の図示左端開口には、計器用変圧器１０
を絶縁スペーサ３ｂを介して取付ける。計器用変圧器１
０と中間接触部７とは、絶縁スペーサ３ｂを貫通して固
着されている導体１１と中間接触部７に具備されている
接触子１２とにより通電接続されている。第１図は断路
部の投入状態を示している。投入状態では、断路用可動
接触子１３が、断路用固定接触部２ａと中間接触部７の
断路用可動接触８Ｉ１６を通電接続させている。又、こ
のとき接地用可動接触子１４は中間接触部７の接地用可
動接触部５で接地用固定接触部９との切離状態を保って
いる。断路用可動接触子１３と接地用可動接触子１４と
はラックパー１５にて連結接続され、ピニオン１６及び
絶縁棒１７を介して外部より、モータードライブ操作機
構１８で操作される。An instrument transformer 10 is installed at the left end opening of the L-shaped tank 1 in the illustration.
is attached via an insulating spacer 3b. Instrument transformer 1
0 and the intermediate contact portion 7 are electrically connected by a conductor 11 fixed to the intermediate contact portion 7 through the insulating spacer 3b and a contactor 12 provided on the intermediate contact portion 7. FIG. 1 shows the disconnecting section in the closed state. In the closed state, the disconnecting movable contact 13 connects the disconnecting fixed contact portion 2a and the disconnecting movable contact 8I16 of the intermediate contact portion 7 with electricity. Further, at this time, the grounding movable contact 14 maintains a disconnected state from the grounding fixed contact part 9 at the grounding movable contact part 5 of the intermediate contact part 7. The disconnecting movable contact 13 and the grounding movable contact 14 are connected to each other by a rack par 15, and are operated by a motor drive operating mechanism 18 from the outside via a pinion 16 and an insulating rod 17.

上記構成の接地機構付断路器を用いた、ガス絶縁開閉装
置の配置例を第２図に示す。第２図はＩ　ＣＢ方式のガ
ス絶縁開閉装置の一部を図示したものである。第２図に
おいて、右側の貫通形変流器ＣＴ１を具備したしゃ断器
１９ａの口出端には、接地装置を具備した断路器２０ａ
が取付られている。又、左側の貫通形変流器ＣＴ２を具
備したしゃ断器１９ｂの日出端には、接地装置を具備し
た断路器２０ｂが取付られている。各々の接地装置を具
備した断路器２０ａ　、２Ｏｂ間は１字母線２１で接続
され、下方へ分岐されている。下方へ分岐された母線に
は、分岐母線部用の接地装置付断路器２２が配置され、
さらに下方の母線２３には、図示左側に２段に２ケ所、
そして、右側に１ケ所、合計３ケ所に計器用変圧器ＰＴ
を具備した計器用変圧器用の接地機構付断路器２４が接
続配置される。母線２３に複数個（図では３個）の計器
用変圧器ＰＴを接続する理由は、各計器用変圧器ＰＴの
定格が異なるためであり、そして各出力に応じ異なる負
荷例えば継電器を動作させるようにしている。しゃ断器
１９ａ、１９ｂの下部には１字母線２１．母線２３．接
地機構付断路器２４等をしゃ断器１９ａ、１９ｂ間に配
置するためかさ上げ用架台２５が設けられている。FIG. 2 shows an example of the arrangement of a gas-insulated switchgear using a disconnector with a grounding mechanism configured as described above. FIG. 2 shows a part of the ICB type gas insulated switchgear. In FIG. 2, at the outlet end of the breaker 19a equipped with the through-type current transformer CT1 on the right side, a disconnector 20a equipped with a grounding device is installed.
is installed. Furthermore, a disconnector 20b equipped with a grounding device is attached to the sunrise end of the left-hand circuit breaker 19b equipped with the through-type current transformer CT2. The disconnectors 20a and 2Ob, each equipped with a grounding device, are connected by a single-figure busbar 21 and branched downward. A disconnector 22 with a grounding device for the branch busbar section is arranged on the busbar branched downward,
Furthermore, on the lower bus bar 23, there are two locations on the left side of the figure in two stages.
Then, there is a potential transformer PT in 3 locations, 1 on the right side.
A disconnector 24 with a grounding mechanism for a voltage transformer is connected and arranged. The reason why a plurality of potential transformers PT (three in the figure) are connected to the bus bar 23 is that each potential transformer PT has a different rating, and different loads such as relays are operated according to each output. I have to. At the bottom of the circuit breakers 19a and 19b, there is a single bus bar 21. Bus line 23. A raising frame 25 is provided to arrange the disconnector 24 with a grounding mechanism and the like between the circuit breakers 19a and 19b.

上述した様なガス絶縁開閉装置の配置においては、計器
用変圧器ＰＴ及び計器用変圧器用の接地機構付断路器２
４を複数個設けようとすると、しゃ断器１９を架台２５
でかさ上げしなければならないという改良すべき点があ
った。計器用変圧器ＰＴを接地機構付断路器２４の軸方
向端には設けるようにすればしゃ断器１９の高さを幾分
低（することも可能であるがこの場合にはしヤ断器１９
ａ、１９ｂ間の間隔を大きくしなければならない。In the arrangement of the gas insulated switchgear as described above, a voltage transformer PT and a disconnector 2 with a grounding mechanism for the voltage transformer are installed.
If you try to install multiple circuit breakers 19,
There was one point that needed improvement, which was that it had to be made larger. If the potential transformer PT is provided at the axial end of the disconnector 24 with a grounding mechanism, the height of the breaker 19 can be made somewhat lower (although it is possible to lower the height of the breaker 19 in this case)
The distance between a and 19b must be increased.

［発明の目的コ 本発明は上述の点を考慮してなされたもので、その目的
とするところは、ガス絶Ｒ開閉装置に使用する計器用変
圧器或いは避雷器等２つの切離し機器を主回路から切離
し、これらを同時に接地することができる接地機構付断
路装置を得るにある。[Object of the Invention] The present invention has been made in consideration of the above-mentioned points, and its purpose is to disconnect two disconnection devices such as a voltage transformer or a lightning arrester used in a gas-free R switchgear from the main circuit. An object of the present invention is to obtain a disconnecting device with a grounding mechanism capable of disconnecting these and grounding them at the same time.

［発明の概要］ かかる目的を達成するために本発明によれば、２つの断
路用固定接触部を備えた主回路に接続される固定接続部
の両側に、断路用及び接地用接触部を有する第１．第２
の中間接触部を配置し、この第１．第２の中間接触部の
側面に、この中間接触部と計器用変圧器或いは避雷器等
の切離し機器を接離するだめの口出しを夫々設けるとと
もに前記中間接触部内に配置した断路用及び接地用の可
動接触子を駆動する第１．第２の操作装置を夫々設けた
もので、これら固定接続部、第１．第２の中間接触部を
タンク内に略−直線上に配置することにより装置の小形
化を図るようにしたものである。[Summary of the Invention] In order to achieve the above object, the present invention provides a fixed connecting portion connected to a main circuit having two fixed disconnecting contact portions, which has a disconnecting contact portion and a grounding contact portion on both sides. 1st. Second
The intermediate contact portion of this first . A side surface of the second intermediate contact part is provided with openings for connecting and separating the intermediate contact part and disconnection equipment such as a voltage transformer or a lightning arrester, and a movable disconnecting and grounding part disposed within the intermediate contact part. The first one drives the contact. A second operating device is provided respectively, and these fixed connections, the first and second operating devices are respectively provided. By arranging the second intermediate contact portion approximately in a straight line within the tank, the device can be made more compact.

［発明の実施例］ 以下、本発明の一実施例を第１図、第２図と同一部分に
同符号を付した第３図及び第４図を参照して説明する。[Embodiment of the Invention] Hereinafter, an embodiment of the present invention will be described with reference to FIGS. 3 and 4, in which the same parts as in FIGS. 1 and 2 are denoted by the same reference numerals.

第３図に於いては１つのケースに２台分の計器用変圧器
用の設置機構及び断路部を具備した接地機構付断路器２
６を示しである。ケース２７の上端を閉塞する蓋４ａの
内面に絶縁筒８ａを介して上方には接地用可動接触子１
４ａが摺動する接地用可動接触部５ａが、また下方には
断路用固定接触部２ｂと対向して断路用可動接触子１３
ａが摺動する断路用可動接触部６ａを具１藷した中間接
触部７ａを取付けている。又、絶縁筒８ａ内の蓋４ａ内
面には前記接地用可動接触部５ａと対向する接地用固定
接触部９ａを配置する。In Fig. 3, a disconnector 2 with a grounding mechanism is provided in one case with an installation mechanism and a disconnection section for two instrument transformers.
6 is shown. A movable grounding contact 1 is disposed above the inner surface of the lid 4a that closes the upper end of the case 27 through an insulating tube 8a.
A grounding movable contact part 5a on which the grounding contact 4a slides, and a disconnecting movable contact 13 facing the disconnecting fixed contact part 2b below.
An intermediate contact portion 7a is attached, which includes a sliding movable contact portion 6a for disconnection. Further, on the inner surface of the lid 4a inside the insulating cylinder 8a, a fixed grounding contact part 9a is arranged opposite to the movable grounding contact part 5a.

ケース２７の上方部−側面に設けた開口には、計器用変
圧器１０ａが絶縁スペーサ３０ａを介して取付られてい
る。計器用変圧器１０ａと中間接触部７ａとは、絶縁ス
ペーサ３０ａを貫通して固着されている導体１１ａと中
間接触部７ａに設けた接触子１２ａとにより通電接続さ
れている。ケース２７の軸方向のほぼ中央の一側（図示
右側）には、断路用固定接触部２を配置し、この接触部
２は固定接続部２８を介して絶縁スペーサ３により支持
される。接触部２のタンク２７軸方向両端には夫々固定
接触子２００ａ、、２００ｂを設ける。An instrument transformer 10a is attached to an opening provided in the upper side of the case 27 via an insulating spacer 30a. The instrument transformer 10a and the intermediate contact portion 7a are electrically connected to each other by a conductor 11a fixed to the insulating spacer 30a and a contact 12a provided on the intermediate contact portion 7a. A fixed contact portion 2 for disconnection is arranged on one side (right side in the drawing) of the case 27 approximately at the center in the axial direction, and this contact portion 2 is supported by an insulating spacer 3 via a fixed connection portion 28 . Fixed contacts 200a, 200b are provided at both ends of the contact portion 2 in the axial direction of the tank 27, respectively.

絶縁スペーサ３を貫通してタンク２７の外方に突出する
固定接続部２８は母線（後述する第４図で、符号２３で
示されている）に接続される。中間接触部７ａ内には前
述した接地用可動接触子１４ａと断路用可動接触子１３
ａを連結するラックバー１５ａが収納され、このラック
バー１５ａに係合するビニオン１６ａは、絶縁棒１７ａ
を介してタンク２７外部に設けたモータードライブ操作
ＩＭ構１８ａで駆動される。A fixed connection portion 28 that penetrates the insulating spacer 3 and projects outward from the tank 27 is connected to a bus bar (indicated by reference numeral 23 in FIG. 4, which will be described later). The above-mentioned movable grounding contact 14a and movable disconnecting contact 13 are provided in the intermediate contact portion 7a.
A rack bar 15a connecting the rack bars 15a is housed, and a binion 16a that engages with the rack bar 15a is connected to an insulating rod 17a.
It is driven by a motor drive operation IM mechanism 18a provided outside the tank 27 via the tank 27.

ところで第３図に於て、断路用固定接触部２と接続部２
８部分に一点鎖線を記しであるが、この一点鎖線を中心
線として、上、下の各機器は対称配置となっているので
、前述した各構成機器の符号にｂを記してその説明は省
略する。By the way, in FIG. 3, the disconnecting fixed contact part 2 and the connecting part 2
Section 8 is marked with a dash-dot line, and since the upper and lower devices are arranged symmetrically with this dash-dot line as the center line, b is added to the code of each component mentioned above, and the explanation thereof will be omitted. do.

次に前述した本発明の詳細な説明する。向上。Next, the above-mentioned invention will be explained in detail. Improved.

下部の各機器は同一の動きをするものであるからその説
明に当っては上方部のものについてのみ説明することに
する。第３図は断路部の投入状態を示している。投入状
態では、断路用可動接触子１３ａが、断路用固定接触部
２の固定接触子２００ａと中間接触部７ａの断路用可動
接触部６ａを通電接続させている。又、この時、接地用
可動接触子１４ａは、中間接触部７ａの接地用可動接触
部５ａと接触しているが接地用固定接触部９ａどは切離
状態を保っている。断路用可動接触子１３ａと接地用可
動接触子１４ａとは、ラックバー１５ａにて連結接続さ
れ、ビニオン１６ａ及び絶縁棒１７ａを介して外部より
、モータードライブ操作機＠１８ａで操作される。断路
時にはモータードライブ装置１８ａを駆動すれば絶縁棒
１７ａを介してビニオン１６ａが回転するのでラックバ
ー１５ａが図示上方向に移動し、断路用可動接触子１３
ａが固定接触子２００ａから離れ断路されるとともに接
地用可動接触子１４ａが接地用固定接触子９ａと接触し
、計器用変圧器１０ａが接地される。尚下方部の機器も
同様間特に操作され、計器用変圧器１０ｂも接地される
ことになる。Since each device in the lower part moves in the same way, only the equipment in the upper part will be explained. FIG. 3 shows the closing state of the disconnecting section. In the closed state, the disconnecting movable contact 13a connects the fixed contact 200a of the disconnecting fixed contact section 2 and the disconnecting movable contact section 6a of the intermediate contact section 7a with electricity. Further, at this time, the grounding movable contact 14a is in contact with the grounding movable contact portion 5a of the intermediate contact portion 7a, but the grounding fixed contact portion 9a and the like remain in a disconnected state. The disconnecting movable contact 13a and the grounding movable contact 14a are connected by a rack bar 15a, and are operated from the outside by a motor drive operating device @18a via a binion 16a and an insulating rod 17a. At the time of disconnection, if the motor drive device 18a is driven, the pinion 16a rotates via the insulating rod 17a, so the rack bar 15a moves upward in the figure, and the disconnection movable contact 13
a is separated from the fixed contact 200a and disconnected, and the grounding movable contact 14a comes into contact with the grounding fixed contact 9a, and the instrument transformer 10a is grounded. Note that the equipment in the lower part is also operated in the same way, and the voltage transformer 10b is also grounded.

上述の本発明の接地機構付新路器２６を用いたガス絶縁
開閉装置の配置例を第２図と同一部品に同符号を記した
第４図に示し説明する。第４図において、右側の貫通形
変流器ＣＴＩを具備したしゃ断器１９ａの左端には、接
地装置を具備した断路器２００ａが取付られている。又
、左側の貫通形変流器ＣＴ２を具備したしゃ断器１９ｂ
の右端には、接地装置を具備した断路器２０ｂが取付ら
れている。各々の接地装置を具備した断路器２０ａ、２
Ｏｂ間にＴ字母線２１が設けられ、１・方へ分岐されて
いる。下方へ分岐された母線に（よ、分岐母線部用の接
地装置付断路器２２が具備され、さらに下方の母線２３
には、図示左側に第３図で説明した本発明による計器用
変圧器１０ａ　、　１０ｂを具備した接地機構付新路器
２６が設けられる。ここで接地機構付断路器２６の接続
部２８が母線２３の導体に接続される。さらに右側には
計器用変圧器を具備した接地機構付新路器２７１が設け
られる。An example of the arrangement of a gas insulated switchgear using the above-mentioned new circuit device 26 with a grounding mechanism according to the present invention will be described with reference to FIG. 4, in which the same parts as in FIG. 2 are given the same reference numerals. In FIG. 4, a disconnector 200a equipped with a grounding device is attached to the left end of a circuit breaker 19a equipped with a through-type current transformer CTI on the right side. In addition, the breaker 19b equipped with the through-type current transformer CT2 on the left side
A disconnector 20b equipped with a grounding device is attached to the right end of the disconnector 20b. Disconnectors 20a and 2 each equipped with a grounding device
A T-shaped busbar 21 is provided between Ob and is branched in the 1 direction. The bus bar branched downward is equipped with a disconnect switch 22 with a grounding device for the branch bus bar section, and a disconnect switch 22 with a grounding device for the branch bus bar section is provided, and
A new line switch 26 with a grounding mechanism is provided on the left side of the figure, which is equipped with the voltage transformers 10a and 10b according to the present invention as explained in FIG. Here, the connecting portion 28 of the disconnector 26 with a grounding mechanism is connected to the conductor of the bus bar 23. Furthermore, on the right side, a new circuit device 271 with a grounding mechanism is provided, which is equipped with an instrument transformer.

尚上記実施例では計器用変圧器１０ａ、１０１）を設け
たものについて説明したが、一方を避雷器としてもよい
。Incidentally, in the above embodiment, the case where the instrument transformers 10a, 101) were provided was described, but one of them may be used as a lightning arrester.

［発明の効果］ 上記構成の本発明によれば中間部に一対の断路部を構成
し、この断路部と同一軸線上に夫々接地装置部を配置す
るとともに断路部及び接地装置の各可動接触子を夫々の
中間接触部内に収納したラックバ−にて連結し、この夫
々中間接触部に接地される県器を夫々接続するようにし
たので装置全体の縮少化をはかることができる。特に本
発明装置を、”ＩｃＢ方式の縦形しゃ断器の対向面間に
配置する場合には、装置の小形化をはかることができる
。[Effects of the Invention] According to the present invention having the above configuration, a pair of disconnecting sections are formed in the intermediate portion, and each of the grounding device sections is disposed on the same axis as the disconnecting section, and each movable contactor of the disconnecting section and the grounding device is arranged. are connected by a rack bar housed in each intermediate contact part, and the grounded devices are connected to each intermediate contact part, so that the overall size of the apparatus can be reduced. In particular, when the device of the present invention is placed between opposing surfaces of an IcB type vertical breaker, the device can be made smaller.

【図面の簡単な説明】[Brief explanation of drawings]

第１図は従来の一例を示す断面図、第２図は第１図の装
置を用いて構成した１＋ＣＢ方式のガス絶縁開閉装置の
構成図、第３図は本発明の一実施例を示す断面図、第４
図は本発明装置を用いて構成したｌ　ＣＢ方式のガス絶
縁開閉装置の構成図である。 ２・・・断路用固定接触部、２００・・・断路用固定接
触子、３，３０・・・絶縁スペーサ、４・・・蓋、５・
・・接地用可動接触部、６・・・断路用可動接触部、７
・・・中間接触部、８・・・絶縁筒、９・・・接地用固
定接触部、１０・・・計器用変圧器、１１・・・導体接
触部、１２・・・接触子、１３・・・断路用可動接触子
、１４・・・接地用可動接触子、１５・・・ラックバ−
１１６・・・ビニオン、１７・・・絶縁棒、１８・・・
モータードライブ操作機構、２８・・・固定接続部。 矛１ｆ！１ 矛２図 矛３図Fig. 1 is a sectional view showing a conventional example, Fig. 2 is a configuration diagram of a 1+CB type gas insulated switchgear constructed using the device shown in Fig. 1, and Fig. 3 is a sectional view showing an embodiment of the present invention. Figure, 4th
The figure is a configuration diagram of an LCB type gas insulated switchgear constructed using the device of the present invention. 2... Fixed contact part for disconnecting, 200... Fixed contact for disconnecting, 3, 30... Insulating spacer, 4... Lid, 5...
... Movable contact part for grounding, 6... Movable contact part for disconnection, 7
. . . Intermediate contact portion, 8 . . . Insulating cylinder, 9 . . . Fixed contact portion for grounding, 10 . ... Movable contact for disconnection, 14... Movable contact for ground, 15... Rack bar
116... Binion, 17... Insulating rod, 18...
Motor drive operation mechanism, 28... fixed connection part. Spear 1f! 1 spear 2 spear 3 spear

Claims (1)

【特許請求の範囲】[Claims] 計器用変圧器あるいは避雷器等の２つの機器を主回路か
ら切離し同時に接地する接地機構付断路器において、タ
ンク内に収納した２つの断路用固定接触部をそなえた主
回路に接続される固定接続部の両側に、互に連結された
断路用可動接触部と接地用可動接触部を内部に収納した
中間接触部及び接地用固定接触部を夫々配置しまた前記
中間接触部の一側面には前記２つの機器を接続する夫々
の口出し用接触子を設け、前記夫々の中間接触部内の断
路用可動接触子並びに接地用可動接触子を夫々絶縁ロン
ドを介して外部から駆動する夫々の操作機構を前記タン
ク外に配置し、前記中間接触部、固定接続部並びに接地
用可動接触部と接離する接地用固定接触部を同一直線上
に配置したことを特徴とする接地機構付断路器。In a disconnector with a grounding mechanism that disconnects two devices, such as a voltage transformer or a lightning arrester, from the main circuit and simultaneously grounds them, a fixed connection part that is connected to the main circuit and has two fixed contact parts for disconnection housed in a tank. An intermediate contact part and a fixed grounding contact part each housing a disconnecting movable contact part and a grounding movable contact part connected to each other are arranged on both sides of the intermediate contact part. A respective operating mechanism for driving a movable disconnecting contact and a movable grounding contact in the respective intermediate contact portions from the outside via an insulating iron is provided in the tank. 1. A disconnector with a grounding mechanism, characterized in that a grounding fixed contact part which is arranged outside and makes contact with and separates from the intermediate contact part, the fixed connection part and the grounding movable contact part is arranged on the same straight line.