JP2023106025A - Voltage detection terminal device of cable terminal of underground power distribution device - Google Patents

Voltage detection terminal device of cable terminal of underground power distribution device Download PDF

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JP2023106025A
JP2023106025A JP2022007126A JP2022007126A JP2023106025A JP 2023106025 A JP2023106025 A JP 2023106025A JP 2022007126 A JP2022007126 A JP 2022007126A JP 2022007126 A JP2022007126 A JP 2022007126A JP 2023106025 A JP2023106025 A JP 2023106025A
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voltage detection
terminal
detection terminal
power distribution
voltage
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伸治 齋藤
Shinji Saito
勇 西川
Isamu Nishikawa
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Saneisha Seisakusho KK
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Saneisha Seisakusho KK
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Abstract

To contact a voltage detection terminal in an outer case and to detect voltage even without inserting a hand by opening a bottom plate of the outer case or without forming an inlet hole in a hand hole, even when an underground power distribution device is lowered with the outer case in accordance with lower ground height of an underground device.SOLUTION: In an underground power distribution device in which a device direct connection type cable terminal 3 is connected below a switch 2 accommodated in a multi-circuit switch tower 1 and an existing voltage detection terminal part 4 provided in the device direct connection type cable terminal 3 is provided on a bottom plate of the multi-circuit switch tower 1 or lower, the other end of an insulated wire 6 having one end electrically connected to a voltage detection terminal of the existing voltage detection terminal part 4 is derived into the multi-circuit switch tower 1 and electrically connected to a voltage detection terminal of a new voltage detection terminal part 7 provided in the multi-circuit switch tower 1.SELECTED DRAWING: Figure 1

Description

この発明は、地中に通っているケーブルを地中から立ち上げて、地上に設けた外箱内の開閉器等の地中配電機器に前記ケーブルの端末を接続している機器のケーブル端末の検電端子装置に関するものである。 The present invention is a cable terminal for equipment in which a cable running underground is raised from the ground and the terminal of the cable is connected to underground distribution equipment such as a switch in an outer box provided on the ground. The present invention relates to a voltage detection terminal device.

地中配電線路では、電気を高圧から低圧に変換したり、電気の流れを変えるため、地上に設置した外箱内の変圧器や開閉器等の機器に地中のケーブルを立ち上げて接続している。これらの地中配電機器への前記ケーブルの接続には特許文献１の図１で示すような機器直結形ケーブル端末が用いられている。 In underground distribution lines, in order to convert electricity from high voltage to low voltage or change the flow of electricity, underground cables are raised and connected to equipment such as transformers and switches installed on the ground inside the outer box. ing. For connection of the cables to these underground power distribution devices, device direct connection type cable terminals as shown in FIG. 1 of Patent Document 1 are used.

そして、これらの地上機器の修理や点検の際は、外箱の扉を開けて外箱内に位置している機器直結形ケーブル端末に設けている検電端子（イ）のキャップを開けて検電端子に検電器を接触させて検電している。 When repairing or inspecting these ground equipment, open the door of the outer box and open the cap of the voltage detection terminal (a) provided on the terminal of the cable directly connected to the equipment located inside the outer box. The voltage is detected by contacting a voltage detector to the voltage terminal.

ところが、昨今の無電柱化と合わせて、各電力会社で使用されている地中配電機器では、社会的ニーズとして機器の低地上高化が求められている。 However, in conjunction with the recent trend toward removing utility poles, underground power distribution equipment used by electric power companies is required to have a lower ground clearance as a social need.

そのため、従来の外箱の背丈を小さくして、当該外箱内に既存の地中配電機器を収納し、地中配電機器から垂下した機器直結形ケーブル端末をハンドホール内に配置し、前記外箱の地上高を低くしている。それ故、図６に示すように、前記機器直結形ケーブル端子に設けられている検電端子（イ）もハンドホール内に位置している状態となっている。 Therefore, the height of the conventional outer box is reduced, the existing underground power distribution equipment is stored in the outer box, and the equipment direct connection type cable terminal hanging from the underground power distribution equipment is arranged in the hand hole, The ground clearance of the box is lowered. Therefore, as shown in FIG. 6, the voltage detection terminal (a) provided on the device direct connection type cable terminal is also located in the handhole.

特開平８－３６００５号公報JP-A-8-36005

この様に外箱内で地中配電機器の下に接続されている機器直結形ケーブル端末に設けられた検電端子は外箱の底板より下のハンドホール内に位置しているため外箱の扉を開けただけでは検電作業が困難であり、底板を外して手を差し込んで行うか、または、ハンドホール内部に入孔する必要があり、検電作業に手間がかかる。また、前記ハンドホール内の前記ケーブル端末が一時的に水没しているときは、検電電圧が漏洩し、検電作業が不可能となる。 In this way, the voltage detection terminal provided on the device direct connection type cable terminal connected under the underground distribution equipment in the outer case is located in the hand hole below the bottom plate of the outer case. It is difficult to perform voltage detection by simply opening the door, and it is necessary to either remove the bottom plate and insert a hand, or to insert a hand inside the handhole, which is time-consuming. Further, when the cable end in the handhole is temporarily submerged in water, voltage detection voltage leaks, making voltage detection work impossible.

そこで、この発明はこれらの問題点に着目して発明されたもので、このような地中機器の低地上高化に伴って外箱ごと地中配電機器を下げた場合であっても外箱内で検電端子に接触でき、外箱の底板を開けて手を差し込んで行ったり、ハンドホール内に入孔しなくても検電できる地中配電機器のケーブル端末の検電端子装置を提供することを目的としたものである。 Therefore, the present invention was invented by paying attention to these problems. To provide a voltage detection terminal device for a cable terminal of an underground power distribution device capable of contacting a voltage detection terminal inside and detecting voltage without opening the bottom plate of an outer case and inserting a hand or entering a hand hole. It is intended to

請求項１の発明は、外箱内に収納した地中配電機器の下に機器直結形ケーブル端末を接続し、当該機器直結形ケーブル端末に設けた既存検電端子が、前記外箱の底板以下に設けられた地中配電機器において、前記既存検電端子に一端が電気的に接続されたシールド線又は絶縁線の他端を前記外箱内に導入して当該外箱内に設けた新設検電端子に電気的に接続した、地中配電機器のケーブル端末の検電端子装置とした。 In the invention of claim 1, a device direct connection type cable terminal is connected under the underground power distribution device stored in the outer box, and the existing voltage detection terminal provided on the device direct connection type cable terminal is located below the bottom plate of the outer box. In the underground power distribution equipment installed in the above, the other end of the shielded wire or insulated wire, one end of which is electrically connected to the existing voltage detection terminal, is introduced into the outer case and a new detection is provided inside the outer case. A voltage detecting terminal device for a cable terminal of underground power distribution equipment electrically connected to a power terminal.

また、請求項２の発明は、前記シールド線又は絶縁線の一端は既存検電端子に被せる検電キャップ内に導入して設け、当該検電キャップを既存検電端子に被せると前記シールド線又は絶縁線の一端が既存検電端子に電気的に接続され、前記シールド線又は絶縁線の他端は前記新設検電端子に電気的に接続されている、請求項１に記載の地中配電機器のケーブル端末の検電端子装置とした。 Further, in the invention of claim 2, one end of the shielded wire or the insulated wire is provided by being introduced into a voltage detection cap that covers the existing voltage detection terminal, and when the voltage detection cap is put on the existing voltage detection terminal, the shielded wire or the insulated wire 2. The underground power distribution equipment according to claim 1, wherein one end of the insulated wire is electrically connected to the existing voltage detection terminal, and the other end of the shielded wire or the insulated wire is electrically connected to the new voltage detection terminal. It was used as a voltage detection terminal device for the cable terminal.

また、請求項３の発明は、前記既存検電端子とシールド線又は絶縁線との接続部分、又は、既存検電端子に被せた検電キャップと既存検電端子との合わせ目部分及び前記シールド線又は絶縁線は水密構造となっている、請求項１又は２に記載の地中配電機器のケーブル端末の検電端子装置とした。 In addition, the invention of claim 3 is a connection portion between the existing voltage detecting terminal and the shielded wire or the insulated wire, or a seam portion between the voltage detecting cap put on the existing voltage detecting terminal and the existing voltage detecting terminal and the shield A voltage detecting terminal device for a cable terminal of an underground power distribution device according to claim 1 or 2, wherein the wire or the insulated wire has a watertight structure.

請求項１の発明によれば、地中配電機器を収納した外箱が低地上高化しても地中配電機器のケーブル端末の既存検電端子が外箱の底板より下になっても、検電を行う際は前記外箱の扉を開ければ、新設検電端子が外箱内にあるため、作業者は地上に居ながら容易に検電することが出来き、検電作業が迅速かつ確実に行える。 According to the invention of claim 1, even if the outer box housing the underground power distribution equipment has a low ground clearance and the existing voltage detection terminal of the cable terminal of the underground power distribution equipment is below the bottom plate of the outer box, the detection can be performed. If the door of the outer box is opened when performing the voltage detection, the new voltage detection terminal is inside the outer box, so the operator can easily detect the voltage while on the ground, and the voltage detection work can be performed quickly and reliably. can be done

また、特に請求項２の発明によれば、既存の機器直結形ケーブル端末の検電端子を使用して、新たに設けたシールド線又は絶縁線の一端を検電キャップに接続した当該検電キャップを既存検電端子に被せれば、当該既存検電端子とシールド線または絶縁線が電気的に接続され、さらに、新設検電端子と既存検電端子とが電気的に接続されるので、従来から使用している地中配電機器をそのまま使用でき、外箱内の地中配電機器に新設検電端子を設ければ使用でき、経済的である。従って、作業者は新設検電端子の検電キャップを取れば従来と同様の手順で検電作業が行え、便利である。 In addition, according to the invention of claim 2, the voltage detection cap is connected to the voltage detection cap with one end of a newly provided shielded wire or insulated wire using the voltage detection terminal of the existing device direct connection type cable terminal. If the existing voltage detection terminal is covered with the existing voltage detection terminal, the existing voltage detection terminal and the shielded wire or insulated wire are electrically connected, and the new voltage detection terminal and the existing voltage detection terminal are electrically connected. The underground power distribution equipment used from the outside can be used as it is. Therefore, the operator can perform the voltage detection work in the same procedure as before by removing the voltage detection cap of the new voltage detection terminal, which is convenient.

また、請求項３の発明によれば、既存の機器直結形ケーブル端末の検電端子が、ハンドホール内で一時的に浸水している状態でも、既存検電端子に被せた検電キャップやシールド線又は絶縁線が水密構造となっているため、新設検電端子は水の影響を受けずに検電作業が行える。 In addition, according to the invention of claim 3, even if the voltage detection terminal of the existing device direct connection type cable terminal is temporarily submerged in the hand hole, the voltage detection cap or the shield that covers the existing voltage detection terminal Since the wire or insulated wire has a watertight structure, the new voltage detection terminal can perform voltage detection work without being affected by water.

この発明の実施の形態例１の地中配電機器のケーブル端末の検電端子装置を設けた多回路開閉器塔の扉を外した状態の正面図である。1 is a front view of a multi-circuit switchgear tower provided with voltage detection terminal devices for cable terminals of underground power distribution equipment according to Embodiment 1 of the present invention, with a door removed; FIG. この発明の実施の形態例１の地中配電機器のケーブル端末の検電端子装置を設けた多回路開閉器塔の側面断面図である。1 is a cross-sectional side view of a multi-circuit switchgear tower provided with voltage detection terminal devices for cable terminals of underground power distribution equipment according to Embodiment 1 of the present invention; この発明の実施の形態例１の地中配電機器のケーブル端末の検電端子装置の既存検電端子に検電キャップを被せた拡大断面図である。FIG. 3 is an enlarged cross-sectional view of the existing voltage detection terminal of the voltage detection terminal device of the cable terminal of the underground power distribution equipment according to Embodiment 1 of the present invention, covered with a voltage detection cap. この発明の実施の形態例１の地中配電機器のケーブル端末の検電端子装置の既存検電端子から検電キャップを外した拡大断面図である。FIG. 2 is an enlarged cross-sectional view of the existing voltage detection terminal of the voltage detection terminal device of the cable terminal of the underground power distribution equipment according to Embodiment 1 of the present invention, with the voltage detection cap removed from the voltage detection terminal; この発明の実施の形態例１の地中配電機器のケーブル端末の検電端子装置の新設検電端子に検電キャップを被せた状態の縦断面図である。FIG. 2 is a vertical cross-sectional view showing a state in which a new voltage detection terminal of the voltage detection terminal device of the cable terminal of the underground power distribution equipment according to Embodiment 1 of the present invention is covered with a voltage detection cap. 従来の地中配電機器のケーブル端末の検電端子箇所を示す多回路開閉器塔の扉を開けた正面図である。It is a front view with the door of the multi-circuit switchgear tower opened showing voltage detection terminal locations of cable terminals of conventional underground power distribution equipment.

（実施の形態例１）
この発明の実施の形態例１の地中配電機器のケーブル端末の検電端子装置Ａを図１～５に基づいて説明する。 (Embodiment example 1)
A voltage detecting terminal device A for a cable terminal of underground power distribution equipment according to Embodiment 1 of the present invention will be described with reference to FIGS. 1 to 5. FIG.

この実施の形態例１の地中配電機器のケーブル端末の検電端子装置Ａは、図１及び図２に示すように、多回路開閉器塔１内の各開閉器２及びその下方で接続されている機器直結形ケーブル端末３に跨って設けられている。 As shown in FIGS. 1 and 2, the voltage detection terminal device A of the cable terminal of the underground power distribution equipment of Embodiment 1 is connected to each switch 2 in the multi-circuit switch tower 1 and below it. It is provided straddling the device direct connection type cable terminal 3 that is connected to the device.

前記機器直結形ケーブル端末３に既存検電端子部４が設けられているが、この既存検電端子部４が設けられている箇所は前記多回路開閉器塔１の下方のハンドホール５内である。 The equipment direct connection type cable terminal 3 is provided with an existing voltage detection terminal portion 4, and the location where the existing voltage detection terminal portion 4 is provided is inside the hand hole 5 below the multi-circuit switch tower 1. be.

この既存検電端子部４に一端を接続した絶縁電線６の他端は、多回路開閉器塔１の底板を貫通して多回路開閉器塔１内まで導入され、各開閉器２の下部前面まで伸び、当該箇所で新設検電端子部７に接続されている。 The other end of the insulated wire 6, one end of which is connected to the existing voltage detection terminal portion 4, penetrates the bottom plate of the multi-circuit switch tower 1 and is introduced into the multi-circuit switch tower 1, and the lower front surface of each switch 2 , and is connected to the newly installed voltage detection terminal portion 7 at that location.

前記既存検電端子部４は、検電端子１０と検電キャップ１１とから成り、図３に示すように、機器直結形ケーブル端末３はその外周を絶縁ゴム層８及び導電性ゴム層９で被われており、その一側の導電性ゴム層９から絶縁ゴム層８が略円柱状突起部８ａとして突出している。そして、この略円柱状突起部８ａ内に一端が埋め込まれた他端を外部に突出させた前記検電端子１０が設けられている。この検電端子１０には前記機器直結形ケーブル端末３内部の導電部３ａに電圧が生じると、誘導電圧が発生し、この電圧を検電に利用するものである。 The existing voltage detecting terminal portion 4 consists of a voltage detecting terminal 10 and a voltage detecting cap 11. As shown in FIG. The insulating rubber layer 8 protrudes from the conductive rubber layer 9 on one side thereof as a substantially cylindrical protrusion 8a. The voltage detecting terminal 10 is provided with one end embedded in the substantially cylindrical protrusion 8a and the other end protruding outside. When a voltage is generated in the conductive portion 3a inside the cable terminal 3, an induced voltage is generated at the voltage detection terminal 10, and this voltage is used for voltage detection.

なお、新設検電端子部７に電圧を導くことにより電圧が低下することが考えられ、端末の種類によるそれぞれの特性により、高圧検電としての電圧より低下する場合には、抵抗分圧により低圧検電用の電圧を作り出し、低圧検電で運用することも可能である。 In addition, it is conceivable that the voltage will drop by introducing the voltage to the new voltage detection terminal part 7, and depending on the characteristics of each type of terminal, if the voltage drops below the voltage for high voltage voltage detection, the resistance voltage division will reduce the voltage. It is also possible to create a voltage for voltage detection and operate with low voltage voltage detection.

この検電端子１０を被って略円柱状突起部８ａの外周に常時固定された検電キャップ１１が設けられ、この検電キャップ１１内に前記絶縁電線６の一端が導入され、検電キャップ１１内の接触スプリング１２に接続されている。そして、検電キャップ１１を検電端子１０に被せた状態では、接触スプリング１２が検電端子１０に押圧接触し、絶縁電線６と検電端子１０とが電気的に接続されている。また、この検電キャップ１１を略円柱状突起部８ａから外すと、検電端子１０は外部に露出される。 A voltage detecting cap 11 is provided which covers the voltage detecting terminal 10 and is always fixed to the outer periphery of the substantially cylindrical protrusion 8a. It is connected to the contact spring 12 inside. When the voltage detection cap 11 is placed over the voltage detection terminal 10, the contact spring 12 is pressed against the voltage detection terminal 10, and the insulated wire 6 and the voltage detection terminal 10 are electrically connected. When the voltage detection cap 11 is removed from the substantially cylindrical projection 8a, the voltage detection terminal 10 is exposed to the outside.

この検電キャップ１１は図４に示すように、絶縁ゴムから成るキャップ本体１３内の凹部１３ａ内に前記絶縁電線６の一端が導入され、当該凹部１３ａ内に一端を固定された前記接触スプリング１２と接続されている。また、前記キャップ本体１３の外周は導電性ゴム層１４で被われ、一端からハンドル１５が突出している。また、前記絶縁電線６の検電キャップ１１内に入る箇所は導電性熱収縮チューブ１６でシールドされている。また、その上から防水テープ１７が被っている。これにより絶縁電線６と検電キャップ１１との接続部は水密構造となっている。 As shown in FIG. 4, the voltage detection cap 11 has one end of the insulated wire 6 introduced into a recess 13a in a cap body 13 made of insulating rubber, and the contact spring 12 having one end fixed in the recess 13a. is connected with The outer periphery of the cap body 13 is covered with a conductive rubber layer 14, and a handle 15 protrudes from one end. Further, the part of the insulated wire 6 which enters the voltage detection cap 11 is shielded with a conductive heat-shrinkable tube 16 . Moreover, the waterproof tape 17 is covered from above. As a result, the connecting portion between the insulated wire 6 and the voltage detection cap 11 has a watertight structure.

また、前記新設検電端子部７は図５に示すように、新設検電端子１８と新設検電キャップ１９とから成る。新設検電端子１８は、絶縁ゴム層から成る端子基台２０の略円柱状突起部２０ａに一端が埋設され、他端が外部に突出している。端子基台２０は前記略円柱状突起部２０ａと反対側が凹部２０ｂとなっており、当該凹部２０ｂ内に前記絶縁電線６の他端が導入され、前記新設検電端子１８と電気的に接続されている。 The new voltage detection terminal portion 7 is composed of a new voltage detection terminal 18 and a new voltage detection cap 19, as shown in FIG. One end of the newly installed voltage detection terminal 18 is embedded in a substantially cylindrical protrusion 20a of a terminal base 20 made of an insulating rubber layer, and the other end protrudes outside. The terminal base 20 has a concave portion 20b on the side opposite to the substantially cylindrical projection portion 20a, and the other end of the insulated wire 6 is introduced into the concave portion 20b and electrically connected to the new voltage detecting terminal 18. ing.

また、前記端子基台２０は嵌合体２１を前記凹部２０ｂの開口部に嵌めて密封され、さらに、前記略円柱状突起部２０ａの周囲の端子基台２０は外側から押さえ金具２２に押さえられている。 The terminal base 20 is sealed by fitting the fitting body 21 into the opening of the recess 20b. there is

また、前記新設検電キャップ１９は前記検電キャップ１１と同じように導電性ゴムから成り、新設検電端子１８を被って、端子基台２０の略円柱状突起部２０ａの外周に嵌合させたものである。また、略円柱状突起部２０ａの外周に導電性ゴム膜２３が設けられ、前記押さえ金具２２と検電キャップ１９とを導電部材で接続している。 The new voltage detection cap 19 is made of conductive rubber like the voltage detection cap 11, covers the new voltage detection terminal 18, and is fitted to the outer periphery of the substantially cylindrical protrusion 20a of the terminal base 20. It is a thing. A conductive rubber film 23 is provided on the outer periphery of the substantially cylindrical projection 20a to connect the presser fitting 22 and the voltage detection cap 19 with a conductive member.

この多回路開閉器塔１内の開閉器２の機器直結形ケーブル端末３の検電をするには、多回路開閉器塔１の扉（図示省略）を開けると、多数の開閉器２の下部に新設検電端子部７が設けられており、その新設検電キャップ１９を外すと、新設検電端子１８が現れ、当該新設検電端子１８を用いて、従来と同様に検電できる。 In order to detect the voltage of the equipment direct connection type cable terminal 3 of the switch 2 in this multi-circuit switch tower 1, open the door (not shown) of the multi-circuit switch tower 1 and open the lower part of many switches 2 When the new voltage detection cap 19 is removed, a new voltage detection terminal 18 appears, and voltage can be detected using the new voltage detection terminal 18 in the same manner as in the conventional case.

当該機器直結形ケーブル端末３内の導電部３ａに電圧が生じていれば、既存検電端子部４の検電端子１０に電圧が誘起され、当該電圧は絶縁電線６を通じて新設検電端子１８に電圧がかかる。 If a voltage is generated in the conductive part 3a in the device direct connection type cable terminal 3, a voltage is induced in the voltage detection terminal 10 of the existing voltage detection terminal part 4, and the voltage is applied to the new voltage detection terminal 18 through the insulated wire 6. voltage is applied.

なお、前記既存検電端子部４の検電キャップ１１及び新設検電端子部７の新設検電キャップ１９は、従来から使用されている検電キャップと形状はほぼ同じであり、作業者が検電する際、直ぐに検電キャップと分かるものである。また、既存検電端子部４の検電キャップ１１及び新設検電端子部７の新設検電キャップ１９を外せば、検電端子１０又は新設検電端子１８の点検等が容易に行える。また、既存ケーブル端末の検電キャップをそのまま新設検電端子部７の検電キャップとしても使用することができる。 Note that the voltage detection cap 11 of the existing voltage detection terminal portion 4 and the new voltage detection cap 19 of the new voltage detection terminal portion 7 have substantially the same shape as the voltage detection caps that have been used conventionally, and the operator can inspect them. When charging, it is immediately recognizable as a voltage detection cap. Further, by removing the voltage detection cap 11 of the existing voltage detection terminal portion 4 and the new voltage detection cap 19 of the new voltage detection terminal portion 7, the voltage detection terminal 10 or the new voltage detection terminal 18 can be easily inspected. Further, the voltage detection cap of the existing cable terminal can be used as it is as the voltage detection cap of the new voltage detection terminal portion 7 .

なお、上記実施の形態例１では、地中配電機器のケーブル端末の検電端子装置Ａを多回路開閉器塔１に使用した例を示したが、当該多回路開閉器塔１以外の変圧器を収納した変圧器塔やその他の地中配電機器に使用できる。また、多回路開閉器塔１と表現したが地中配電機器を収納する、扉の付いた外箱でもよい。 In the first embodiment described above, an example is shown in which the voltage detection terminal device A of the cable terminal of the underground power distribution equipment is used in the multi-circuit switchgear tower 1, but the transformer other than the multi-circuit switchgear tower 1 is It can be used in transformer towers and other underground distribution equipment containing Also, although it is expressed as a multi-circuit switch tower 1, it may be an outer box with a door for storing underground power distribution equipment.

また、上記実施の形態例１では絶縁電線６を用いたが、これはシールド線でもよい。また、既存検電端子部４の検電キャップ１１と絶縁電線６との水密構造は上記実施の形態例１のもの限るものではなく、適宜の水密構造であればよい。 Also, although the insulated wire 6 is used in the first embodiment, it may be a shielded wire. Further, the watertight structure between the voltage detecting cap 11 of the existing voltage detecting terminal portion 4 and the insulated wire 6 is not limited to that of Embodiment 1, and any suitable watertight structure may be used.

Ａ 地中配電機器のケーブル端末の検電端子装置
１ 多回路開閉器塔 ２ 開閉器
３ 機器直結形ケーブル端末 ３ａ 導電部
４ 既存検電端子部 ５ ハンドホール
６ 絶縁電線 ７ 新設検電端子部
８ 絶縁ゴム層 ８ａ 略円柱状突起部
９ 導電性ゴム層 １０ 検電端子
１１ 検電キャップ １２ 接触スプリング
１３ キャップ本体 １３ａ 凹部
１４ 導電性ゴム層 １５ ハンドル
１６ 導電性熱収縮チューブ １７ 防水テープ
１８ 新設検電端子 １９ 新設検電キャップ
２０ 端子基台 ２０ａ 略円柱状突起部
２０ｂ 凹部 ２１ 嵌合体
２２ 押さえ金具 ２３ 導電性ゴム膜

A Voltage detection terminal device for cable terminal of underground distribution equipment 1 Multi-circuit switchgear tower 2 Switchgear 3 Equipment direct cable terminal 3a Conductive part
4 Existing Voltage Detector Terminal 5 Hand Hole 6 Insulated Wire 7 New Voltage Detector Terminal 8 Insulating Rubber Layer 8a Approximately Cylindrical Projection 9 Conductive Rubber Layer 10 Voltage Detector Terminal 11 Voltage Detector Cap 12 Contact Spring 13 Cap Body 13a Recess 14 Conductive rubber layer 15 Handle 16 Conductive heat-shrinkable tube 17 Waterproof tape 18 New voltage detection terminal 19 New voltage detection cap 20 Terminal base 20a Approximately cylindrical projection 20b Concave portion 21 Fitting body 22 Presser fitting 23 Conductive rubber film

Claims (3)

外箱内に収納した地中配電機器の下に機器直結形ケーブル端末を接続し、当該機器直結形ケーブル端末に設けた既存検電端子が、前記外箱の底板以下に設けられた地中配電機器において、
前記既存検電端子に一端が電気的に接続されたシールド線又は絶縁線の他端を前記外箱内に導入して当該外箱内に設けた新設検電端子に電気的に接続したことを特徴とする、地中配電機器のケーブル端末の検電端子装置。 An underground power distribution system in which a device-direct-connecting cable terminal is connected under an underground distribution device housed in an outer box, and the existing voltage detection terminal provided on the device-direct-connecting cable terminal is provided below the bottom plate of the outer case. in equipment,
The other end of the shielded wire or the insulated wire, one end of which is electrically connected to the existing voltage detection terminal, is introduced into the outer case and electrically connected to the new voltage detection terminal provided in the outer case. A voltage detection terminal device for cable terminals of underground power distribution equipment. 前記シールド線又は絶縁線の一端は既存検電端子に被せる検電キャップ内に導入して設け、当該検電キャップを既存検電端子に被せると前記シールド線又は絶縁線の一端が既存検電端子に電気的に接続され、前記シールド線又は絶縁線の他端は前記新設検電端子に電気的に接続されていることを特徴とする、請求項１に記載の地中配電機器のケーブル端末の検電端子装置。 One end of the shielded wire or the insulated wire is introduced into a voltage detection cap to be put on the existing voltage detection terminal, and when the voltage detection cap is put on the existing voltage detection terminal, one end of the shielded wire or the insulated wire is connected to the existing voltage detection terminal. , and the other end of the shielded wire or the insulated wire is electrically connected to the new voltage detection terminal. Voltage detection terminal device. 前記既存検電端子とシールド線又は絶縁線との接続部分、又は、既存検電端子に被せた検電キャップと既存検電端子との合わせ目部分及び前記シールド線又は絶縁線は水密構造となっていることを特徴とする、請求項１又は２に記載の地中配電機器のケーブル端末の検電端子装置。 The connecting portion between the existing voltage detecting terminal and the shielded wire or the insulated wire, or the seam portion between the voltage detecting cap covering the existing voltage detecting terminal and the existing voltage detecting terminal, and the shielded wire or the insulated wire have a watertight structure. 3. The voltage detecting terminal device for cable terminals of underground power distribution equipment according to claim 1 or 2, characterized in that:
JP2022007126A 2022-01-20 2022-01-20 Voltage detection terminal device of cable terminal of underground power distribution device Pending JP2023106025A (en)

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Applications Claiming Priority (1)

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JP2022007126A JP2023106025A (en) 2022-01-20 2022-01-20 Voltage detection terminal device of cable terminal of underground power distribution device

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