JP2020197424A - Connection adapter - Google Patents

Connection adapter Download PDF

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Publication number
JP2020197424A
JP2020197424A JP2019102994A JP2019102994A JP2020197424A JP 2020197424 A JP2020197424 A JP 2020197424A JP 2019102994 A JP2019102994 A JP 2019102994A JP 2019102994 A JP2019102994 A JP 2019102994A JP 2020197424 A JP2020197424 A JP 2020197424A
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Japan
Prior art keywords
probe
terminal
connection adapter
support
insulation
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Granted
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JP2019102994A
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Japanese (ja)
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JP6866904B2 (en
Inventor
泰広 齋藤
Yasuhiro Saito
泰広 齋藤
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Mitsubishi Electric Building Solutions Corp
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Mitsubishi Electric Building Techno Service Co Ltd
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Priority to JP2019102994A priority Critical patent/JP6866904B2/en
Priority to CN202010465913.6A priority patent/CN112018531B/en
Publication of JP2020197424A publication Critical patent/JP2020197424A/en
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Publication of JP6866904B2 publication Critical patent/JP6866904B2/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R11/00—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts
    • H01R11/11—End pieces or tapping pieces for wires, supported by the wire and for facilitating electrical connection to some other wire, terminal or conductive member
    • H01R11/18—End pieces terminating in a probe
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
    • G01R1/02—General constructional details
    • G01R1/04—Housings; Supporting members; Arrangements of terminals
    • G01R1/0408—Test fixtures or contact fields; Connectors or connecting adaptors; Test clips; Test sockets
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
    • G01R1/02—General constructional details
    • G01R1/04—Housings; Supporting members; Arrangements of terminals
    • G01R1/0408—Test fixtures or contact fields; Connectors or connecting adaptors; Test clips; Test sockets
    • G01R1/0416—Connectors, terminals
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
    • G01R31/52—Testing for short-circuits, leakage current or ground faults

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
  • Distribution Board (AREA)

Abstract

To provide a connection adapter which can perform a connection work easily to take in a reference signal from a neutral phase of a distribution board.SOLUTION: A connection adapter 30 includes a probe 34, a supporting pin 35, a supporting body 39, a terminal 37, an electric wire 32, and a magnet 38. The probe 34 is connected to a neutral phase at its top end when is inserted in an insulation measuring hole 13 of a branch breaker. A supporting pin 35 is inserted in an insulation measuring hole 14 when the probe 34 is inserted in the insulation measuring hole 13. The electric wire 32 connects the probe 34 and the terminal 37 to each other. The magnet 38 can fix a supporting body 39 to a side surface 9a of the distribution board 5.SELECTED DRAWING: Figure 4

Description

この発明は、ＩＧＲ探査器に基準信号を取り入れるために用いられる接続アダプタに関する。 The present invention relates to a connection adapter used to incorporate a reference signal into an IGR probe.

特許文献１に、ＩＧＲ探査器が記載されている。ＩＧＲ探査器は、絶縁不良を起こしている回路を調査する際に使用される。特許文献１に記載されたＩＧＲ探査器は、基準信号を入力するためのコードを備える（図１５参照）。このコードは、導体を挟むための接続クリップを備える。 Patent Document 1 describes an IGR probe. The IGR probe is used to investigate circuits that are causing poor insulation. The IGR probe described in Patent Document 1 includes a code for inputting a reference signal (see FIG. 15). This cord includes a connecting clip for sandwiching the conductor.

特開２００４−３６１２４８号公報Japanese Unexamined Patent Publication No. 2004-361248

ＩＧＲ探査器を用いて調査を行う場合に、分電盤から基準信号を取り込むことがある。例えば、特許文献１に記載されたＩＧＲ探査器を用いて調査を行う場合は、基準信号を取り込むために、接続クリップを分電盤内の中性相に接続しなければならない。しかし、分電盤の内部には接続クリップを接続できる箇所が限られている。更に、接続クリップを取り付けることが可能な金属板は、感電防止用のカバーで覆われていることが多い。このため、カバーの取り外しが必要になり、ＩＧＲ探査器を分電盤の中性相に接続する作業に時間が掛かるといった問題があった。 When conducting a survey using an IGR probe, a reference signal may be taken from the distribution board. For example, when conducting a search using the IGR probe described in Patent Document 1, the connection clip must be connected to the neutral phase in the distribution board in order to capture the reference signal. However, the places where the connection clip can be connected are limited inside the distribution board. Further, the metal plate to which the connection clip can be attached is often covered with a cover for preventing electric shock. For this reason, it is necessary to remove the cover, and there is a problem that it takes time to connect the IGR probe to the neutral phase of the distribution board.

この発明は、上述のような課題を解決するためになされた。この発明の目的は、分電盤の中性相から基準信号を取り込むための接続作業を簡単に行うことができる接続アダプタを提供することである。 The present invention has been made to solve the above-mentioned problems. An object of the present invention is to provide a connection adapter capable of easily performing a connection operation for capturing a reference signal from the neutral phase of a distribution board.

この発明に係る接続アダプタは、分岐ブレーカに形成された中性相用の第１絶縁測定孔に差し込まれると先端が中性相に接続されるプローブと、絶縁体であり、プローブが第１絶縁測定孔に差し込まれると、第１絶縁測定孔に隣接する第２絶縁測定孔に挿入される支持ピンと、絶縁体である支持体と、支持体に支持された端子と、プローブ及び端子を接続する電線と、支持体を分電盤の側面に固定可能な固定手段と、を備える。 The connection adapter according to the present invention is a probe whose tip is connected to the neutral phase when inserted into the first insulation measurement hole for the neutral phase formed in the branch breaker, and an insulator, and the probe is the first insulation. When inserted into the measurement hole, the support pin inserted into the second insulation measurement hole adjacent to the first insulation measurement hole, the support as an insulator, the terminal supported by the support, the probe and the terminal are connected. It is provided with an electric wire and a fixing means capable of fixing the support to the side surface of the distribution board.

この発明によれば、分電盤の中性相から基準信号を取り込むための接続作業を簡単に行うことができる。 According to the present invention, the connection work for capturing the reference signal from the neutral phase of the distribution board can be easily performed.

監視システムの例を示す図である。It is a figure which shows the example of the monitoring system. 絶縁不良が発生している回路を特定するための調査方法を説明するための図である。It is a figure for demonstrating the investigation method for identifying a circuit in which insulation failure occurs. 分岐ブレーカの例を示す図である。It is a figure which shows the example of a branch breaker. 実施の形態１における接続アダプタの例を示す図である。It is a figure which shows the example of the connection adapter in Embodiment 1. FIG. 接続部が分岐ブレーカに接続された状態を示す図である。It is a figure which shows the state which the connection part is connected to a branch breaker. 図５のＣ−Ｃ断面を示す図である。It is a figure which shows the CC cross section of FIG. 中継部が分電盤に取り付けられた状態を示す図である。It is a figure which shows the state which the relay part was attached to the distribution board.

添付の図面を参照し、本発明を説明する。重複する説明は、適宜簡略化或いは省略する。各図において、同一の符号は同一の部分又は相当する部分を示す。 The present invention will be described with reference to the accompanying drawings. Overlapping description will be simplified or omitted as appropriate. In each figure, the same reference numerals indicate the same parts or corresponding parts.

実施の形態１．
図１は、監視システムの例を示す図である。ビル１の電気室２に、配電盤３が設けられる。配電盤３は、ビル１内に電力を分配する。図１は、配電盤３がビル１内の各店舗４に電力を分配する例を示す。店舗４に、分電盤５が設けられる。 Embodiment 1.
FIG. 1 is a diagram showing an example of a monitoring system. A switchboard 3 is provided in the electric room 2 of the building 1. The switchboard 3 distributes electric power within the building 1. FIG. 1 shows an example in which the switchboard 3 distributes electric power to each store 4 in the building 1. A distribution board 5 is provided in the store 4.

監視装置６は、ビル１に備えられた回路の絶縁状態を監視する。例えば、監視装置６は、監視用の基準信号を出力し、回路に絶縁不良、即ち漏電が発生しているか否かを判定する。監視装置６は、絶縁不良を検出すると、外部のコントロールセンター７に検出信号を送信する。コントロールセンター７では、監視装置６から検出信号を受信すると、保守員を派遣して調査を行わせる。 The monitoring device 6 monitors the insulation state of the circuit provided in the building 1. For example, the monitoring device 6 outputs a reference signal for monitoring, and determines whether or not insulation failure, that is, electric leakage has occurred in the circuit. When the monitoring device 6 detects an insulation defect, the monitoring device 6 transmits a detection signal to the external control center 7. When the control center 7 receives the detection signal from the monitoring device 6, the control center 7 dispatches maintenance personnel to conduct an investigation.

監視装置６には、例えば絶縁不良が発生している回路が接続された分電盤５の情報が表示される。保守員は、監視装置６の表示を見て、調査すべき分電盤５を特定する。保守員は、調査すべき分電盤５の設置場所に到着すると、絶縁不良が発生している回路をより詳細に特定するための作業を開始する。 The monitoring device 6 displays, for example, information on the distribution board 5 to which a circuit in which insulation failure has occurred is connected. The maintenance staff looks at the display of the monitoring device 6 and identifies the distribution board 5 to be investigated. When the maintenance staff arrives at the installation location of the distribution board 5 to be investigated, the maintenance staff starts work for identifying the circuit in which the insulation failure occurs in more detail.

図２は、絶縁不良が発生している回路を特定するための調査方法を説明するための図である。図２は、分電盤５の蓋８が開けられた状態を示す。分電盤５の筐体９の内部には、複数の分岐ブレーカ１０が設けられる。分岐ブレーカ１０には、店舗４に設置された負荷が接続される。店舗４内の各負荷には、分岐ブレーカ１０を介して電力が供給される。 FIG. 2 is a diagram for explaining an investigation method for identifying a circuit in which insulation failure has occurred. FIG. 2 shows a state in which the lid 8 of the distribution board 5 is opened. A plurality of branch breakers 10 are provided inside the housing 9 of the distribution board 5. The load installed in the store 4 is connected to the branch breaker 10. Electric power is supplied to each load in the store 4 via the branch breaker 10.

図３は、分岐ブレーカ１０の例を示す図である。分岐ブレーカ１０は、内部に、負荷からの電線が接続された導体１１及び１２を備える。例えば、導体１１は中性相（Ｎ相）である。導体１２は、Ｒ相である。分岐ブレーカ１０には、例えば絶縁抵抗値を測定する際にプローブが挿入される導体１１用の絶縁測定孔１３と導体１２用の絶縁測定孔１４とが形成される。絶縁測定孔１４は、絶縁測定孔１３に隣接する。図３は、絶縁測定孔１４が絶縁測定孔１３の上方に配置される例を示す。 FIG. 3 is a diagram showing an example of the branch breaker 10. The branch breaker 10 includes conductors 11 and 12 to which electric wires from the load are connected. For example, the conductor 11 is a neutral phase (N phase). The conductor 12 is in the R phase. The branch breaker 10 is formed with, for example, an insulation measuring hole 13 for a conductor 11 into which a probe is inserted when measuring an insulation resistance value and an insulation measuring hole 14 for a conductor 12. The insulation measurement hole 14 is adjacent to the insulation measurement hole 13. FIG. 3 shows an example in which the insulation measurement hole 14 is arranged above the insulation measurement hole 13.

分電盤５の設置場所に到着した保守員は、ＩＧＲ探査器２０を用いて調査を行う。例えば、保守員は、ＩＧＲ探査器２０によって漏れ電流を測定する。上記調査を行うためには、ＩＧＲ探査器２０に監視用の基準信号を取り込む必要がある。このため、ＩＧＲ探査器２０には、ＧＮＤ線２１と基準信号線２２とが備えられる。保守員は、基準信号線２２を接続アダプタ３０を介して分電盤５内の分岐ブレーカ１０に接続する。これにより、分岐ブレーカ１０からの基準信号が接続アダプタ３０を介してＩＧＲ探査器２０に取り込まれる。 The maintenance staff who arrives at the installation location of the distribution board 5 conducts an investigation using the IGR probe 20. For example, the maintenance personnel measure the leakage current with the IGR probe 20. In order to carry out the above investigation, it is necessary to capture the reference signal for monitoring into the IGR probe 20. Therefore, the IGR probe 20 is provided with a GND line 21 and a reference signal line 22. The maintenance staff connects the reference signal line 22 to the branch breaker 10 in the distribution board 5 via the connection adapter 30. As a result, the reference signal from the branch breaker 10 is taken into the IGR probe 20 via the connection adapter 30.

図４は、実施の形態１における接続アダプタ３０の例を示す図である。接続アダプタ３０は、例えば接続部３１、電線３２、及び中継部３３を備える。接続部３１は、分岐ブレーカ１０に接続される。中継部３３に、ＩＧＲ探査器２０の基準信号線２２が接続される。接続部３１と中継部３３とは、電線３２によって接続される。 FIG. 4 is a diagram showing an example of the connection adapter 30 according to the first embodiment. The connection adapter 30 includes, for example, a connection portion 31, an electric wire 32, and a relay portion 33. The connecting portion 31 is connected to the branch breaker 10. The reference signal line 22 of the IGR probe 20 is connected to the relay unit 33. The connecting portion 31 and the relay portion 33 are connected by an electric wire 32.

接続部３１は、例えばプローブ３４、支持ピン３５、及び保持部３６を備える。プローブ３４は、円柱形状の導体である。プローブ３４は、保持部３６に固定される。プローブ３４は、先端部のみが露出するように絶縁体３４ａによって覆われる。図５は、接続部３１が分岐ブレーカ１０に接続された状態を示す図である。図５は、図３のＡ−Ａ断面に相当する図である。 The connecting portion 31 includes, for example, a probe 34, a support pin 35, and a holding portion 36. The probe 34 is a cylindrical conductor. The probe 34 is fixed to the holding portion 36. The probe 34 is covered with an insulator 34a so that only the tip is exposed. FIG. 5 is a diagram showing a state in which the connecting portion 31 is connected to the branch breaker 10. FIG. 5 is a view corresponding to the AA cross section of FIG.

プローブ３４は、絶縁測定孔１３に差し込まれると先端が導体１１に接触する。即ち、プローブ３４が中性相に接続される。プローブ３４の直径は、絶縁測定孔１３の直径より小さい。また、プローブ３４は、絶縁測定孔１３に差し込まれた際に先端が導体１１に接触できるだけの特定の長さを有する。電線３２は、プローブ３４に接続される。 When the probe 34 is inserted into the insulation measurement hole 13, the tip of the probe 34 comes into contact with the conductor 11. That is, the probe 34 is connected to the neutral phase. The diameter of the probe 34 is smaller than the diameter of the insulation measuring hole 13. Further, the probe 34 has a specific length so that the tip of the probe 34 can come into contact with the conductor 11 when it is inserted into the insulation measurement hole 13. The electric wire 32 is connected to the probe 34.

支持ピン３５は、棒状の絶縁体である。支持ピン３５は、保持部３６に固定される。支持ピン３５は、プローブ３４が保持部３６から突出する方向と同じ方向に保持部３６から突出する。図５に示すように、支持ピン３５は、プローブ３４が絶縁測定孔１３に差し込まれると、絶縁測定孔１４に挿入される。支持ピン３５は、プローブ３４より短い。このため、プローブ３４の先端が導体１１に接触しても、支持ピン３５は導体１２に接触しない。支持ピン３５は、分岐ブレーカ１０の内部の如何なる導体にも接触しない。 The support pin 35 is a rod-shaped insulator. The support pin 35 is fixed to the holding portion 36. The support pin 35 protrudes from the holding portion 36 in the same direction as the probe 34 protrudes from the holding portion 36. As shown in FIG. 5, the support pin 35 is inserted into the insulation measurement hole 14 when the probe 34 is inserted into the insulation measurement hole 13. The support pin 35 is shorter than the probe 34. Therefore, even if the tip of the probe 34 comes into contact with the conductor 11, the support pin 35 does not come into contact with the conductor 12. The support pin 35 does not contact any conductor inside the branch breaker 10.

図５に示すように接続部３１を配置した後に保守員が接続部３１から手を離すと、電線３２が保持部３６から垂れ下がり、接続部３１に対して矢印Ｂに示す方向の力が作用する。これにより、支持ピン３５が絶縁測定孔１４の縁に当たり、接続部３１が分岐ブレーカ１０に固定される。図６は、図５のＣ−Ｃ断面を示す図である。図６に示すように、支持ピン３５は、保持部３６に近づくに従って幅が徐々に大きくなるように形成されても良い。これにより、保守員が接続部３１から手を離した時のがたつきを抑制し、接続部３１を分岐ブレーカ１０により強固に固定することができる。 When the maintenance worker releases the connecting portion 31 after arranging the connecting portion 31 as shown in FIG. 5, the electric wire 32 hangs down from the holding portion 36, and a force in the direction indicated by the arrow B acts on the connecting portion 31. .. As a result, the support pin 35 hits the edge of the insulation measurement hole 14, and the connection portion 31 is fixed to the branch breaker 10. FIG. 6 is a diagram showing a CC cross section of FIG. As shown in FIG. 6, the support pin 35 may be formed so that the width gradually increases as it approaches the holding portion 36. As a result, rattling when the maintenance worker releases his / her hand from the connecting portion 31 can be suppressed, and the connecting portion 31 can be firmly fixed by the branch breaker 10.

中継部３３は、例えば端子３７、磁石３８、及び支持体３９を備える。端子３７は、例えば板状の導体である。図４は、端子３７が四角形状の金属板である例を示す。端子３７は、支持体３９に支持される。端子３７に、電線３２が接続される。即ち、電線３２は、プローブ３４と端子３７とを電気的に接続する。端子３７には、ＩＧＲ探査器２０の基準信号線２２に設けられたクリップが取り付けられる。 The relay unit 33 includes, for example, a terminal 37, a magnet 38, and a support 39. The terminal 37 is, for example, a plate-shaped conductor. FIG. 4 shows an example in which the terminal 37 is a square metal plate. The terminal 37 is supported by the support 39. The electric wire 32 is connected to the terminal 37. That is, the electric wire 32 electrically connects the probe 34 and the terminal 37. A clip provided on the reference signal line 22 of the IGR probe 20 is attached to the terminal 37.

磁石３８は、支持体３９に支持される。図７は、中継部３３が分電盤５に取り付けられた状態を示す図である。図７は、図２のＤ部を拡大した図に相当する。図７に示す例では、磁石３８は、分電盤５の筐体９の外側の側面９ａに固定される。磁石３８は、支持体３９を分電盤５の側面９ａに固定可能な手段の一例である。 The magnet 38 is supported by the support 39. FIG. 7 is a diagram showing a state in which the relay unit 33 is attached to the distribution board 5. FIG. 7 corresponds to an enlarged view of part D in FIG. In the example shown in FIG. 7, the magnet 38 is fixed to the outer side surface 9a of the housing 9 of the distribution board 5. The magnet 38 is an example of a means capable of fixing the support 39 to the side surface 9a of the distribution board 5.

支持体３９は、絶縁体である。支持体３９が絶縁体であるため、端子３７と分電盤５との絶縁性が確保される。本実施の形態に示す例では、支持体３９は、絶縁板４０及び４１を備える。絶縁板４０に、Ｕ字形状の切り欠き４０ａが形成される。絶縁板４１に、Ｕ字形状の切り欠き４１ａが形成される。切り欠き４１ａの形状は、切り欠き４０ａの形状と同じである。 The support 39 is an insulator. Since the support 39 is an insulator, the insulation between the terminal 37 and the distribution board 5 is ensured. In the example shown in this embodiment, the support 39 includes insulating plates 40 and 41. A U-shaped notch 40a is formed in the insulating plate 40. A U-shaped notch 41a is formed in the insulating plate 41. The shape of the notch 41a is the same as the shape of the notch 40a.

端子３７は、絶縁板４０と絶縁板４１とによって挟まれ、一部のみが支持体３９から露出する。例えば、端子３７は、四方の縁のうち直線状の一辺の一部のみが切り欠き４０ａ及び切り欠き４１ａから露出する。端子３７は、露出する部分が切り欠き４０ａ及び４１ａによって形成された凹状の空間から突出することがないように、絶縁板４０と絶縁板４１とによって保持される。 The terminal 37 is sandwiched between the insulating plate 40 and the insulating plate 41, and only a part of the terminal 37 is exposed from the support 39. For example, in the terminal 37, only a part of a linear side of the four edges is exposed from the notch 40a and the notch 41a. The terminal 37 is held by the insulating plate 40 and the insulating plate 41 so that the exposed portion does not protrude from the concave space formed by the notches 40a and 41a.

保守員は、ＩＧＲ探査器２０を用いた調査を行う際に、先ず、磁石３８を筐体９の側面９ａに固定し、中継部３３を分電盤５の外側に取り付ける。次に、保守員は、支持ピン３５が絶縁測定孔１４に挿入されるように、プローブ３４を絶縁測定孔１３に差し込む。これにより、接続部３１を分岐ブレーカ１０に取り付け、端子３７と分岐ブレーカ１０内の中性相とを電気的に接続する。その後、保守員はＩＧＲ探査器２０の基準信号線２２に設けられたクリップで端子３７を挟み、監視用の基準信号を分電盤５からＩＧＲ探査器２０に取り込む。 When conducting a survey using the IGR probe 20, the maintenance staff first fixes the magnet 38 to the side surface 9a of the housing 9, and attaches the relay unit 33 to the outside of the distribution board 5. Next, the maintenance staff inserts the probe 34 into the insulation measurement hole 13 so that the support pin 35 is inserted into the insulation measurement hole 14. As a result, the connecting portion 31 is attached to the branch breaker 10, and the terminal 37 and the neutral phase in the branch breaker 10 are electrically connected. After that, the maintenance staff sandwiches the terminal 37 with a clip provided on the reference signal line 22 of the IGR probe 20, and takes the monitoring reference signal from the distribution board 5 into the IGR probe 20.

監視装置６が絶縁不良を検出した場合、保守員は、早急な調査を要求されることが多い。本実施の形態に示す例であれば、分電盤５の中性相から基準信号を取り込むための接続作業を簡単に且つ短時間で行うことができる。即ち、接続アダプタ３０を用いることにより、分電盤５の内部に備えられたカバー等の部品を取り外すことなく上記接続作業を行うことができる。 When the monitoring device 6 detects an insulation defect, the maintenance personnel are often required to investigate immediately. In the example shown in the present embodiment, the connection work for capturing the reference signal from the neutral phase of the distribution board 5 can be easily performed in a short time. That is, by using the connection adapter 30, the connection work can be performed without removing parts such as a cover provided inside the distribution board 5.

また、保守員は、基準信号線２２に設けられたクリップを端子３７に取り付けた後、ＩＧＲ探査器２０を用いた調査を行う。この調査では、ＩＧＲ探査器２０を頻繁に動かすため、基準信号線２２に設けられたクリップが端子３７から外れ易い。本実施の形態に示す例では、中継部３３が分電盤５の側面９ａに取り付けられている。このため、仮にクリップが端子３７から外れても、クリップは、分電盤５の外に落下する。本実施の形態に示す例であれば、端子３７から外れたクリップによって短絡事故が発生することを抑制できる。 In addition, the maintenance staff attaches the clip provided on the reference signal line 22 to the terminal 37, and then conducts an investigation using the IGR probe 20. In this survey, since the IGR probe 20 is moved frequently, the clip provided on the reference signal line 22 is likely to come off from the terminal 37. In the example shown in this embodiment, the relay unit 33 is attached to the side surface 9a of the distribution board 5. Therefore, even if the clip comes off from the terminal 37, the clip falls out of the distribution board 5. In the example shown in this embodiment, it is possible to suppress the occurrence of a short-circuit accident due to the clip detached from the terminal 37.

１ ビル、 ２ 電気室、 ３ 配電盤、 ４ 店舗、 ５ 分電盤、 ６ 監視装置、 ７ コントロールセンター、 ８ 蓋、 ９ 筐体、 ９ａ 側面、 １０ 分岐ブレーカ、 １１ 導体、 １２ 導体、 １３ 絶縁測定孔、 １４ 絶縁測定孔、 ２０ ＩＧＲ探査器、 ２１ ＧＮＤ線、 ２２ 基準信号線、 ３０ 接続アダプタ、 ３１ 接続部、 ３２ 電線、 ３３ 中継部、 ３４ プローブ、 ３４ａ 絶縁体、 ３５ 支持ピン、 ３６ 保持部、 ３７ 端子、 ３８ 磁石、 ３９ 支持体、 ４０ 絶縁板、 ４０ａ 切り欠き、 ４１ 絶縁板、 ４１ａ 切り欠き 1 Building, 2 Electric room, 3 Distribution board, 4 Stores, 5 Distribution board, 6 Monitoring device, 7 Control center, 8 Lid, 9 Housing, 9a Side, 10 Branch breaker, 11 Conductor, 12 Conductor, 13 Insulation measurement hole , 14 Insulation measuring hole, 20 IGR probe, 21 GND line, 22 Reference signal line, 30 Connection adapter, 31 Connection part, 32 Wire, 33 Relay part, 34 Probe, 34a Insulator, 35 Support pin, 36 Holding part, 37 terminals, 38 magnets, 39 supports, 40 insulation plates, 40a notches, 41 insulation plates, 41a notches

Claims (5)

分電盤の内部に設けられた分岐ブレーカからＩＧＲ探査器に基準信号を取り入れるための接続アダプタであって、
前記分岐ブレーカに形成された中性相用の第１絶縁測定孔に差し込まれると先端が前記中性相に接続されるプローブと、
絶縁体であり、前記プローブが前記第１絶縁測定孔に差し込まれると、前記第１絶縁測定孔に隣接する第２絶縁測定孔に挿入される支持ピンと、
絶縁体である支持体と、
前記支持体に支持された端子と、
前記プローブ及び前記端子を接続する電線と、
前記支持体を前記分電盤の側面に固定可能な固定手段と、
を備えた接続アダプタ。 It is a connection adapter for taking a reference signal from the branch breaker installed inside the distribution board to the IGR probe.
A probe whose tip is connected to the neutral phase when inserted into the first insulation measuring hole for the neutral phase formed in the branch breaker.
A support pin that is an insulator and is inserted into a second insulation measurement hole adjacent to the first insulation measurement hole when the probe is inserted into the first insulation measurement hole.
A support that is an insulator and
The terminals supported by the support and
An electric wire connecting the probe and the terminal,
A fixing means capable of fixing the support to the side surface of the distribution board,
Connection adapter with. 前記プローブは、先端部のみが露出するように絶縁体によって覆われた請求項１に記載の接続アダプタ。 The connection adapter according to claim 1, wherein the probe is covered with an insulator so that only the tip portion is exposed. 前記支持ピンは前記プローブより短く、
前記プローブの先端が前記中性相に接続された状態で、前記支持ピンのうち前記第２絶縁測定孔に差し込まれた部分が前記分岐ブレーカの内部の導体に接触しない請求項１又は請求項２に記載の接続アダプタ。 The support pin is shorter than the probe
Claim 1 or claim 2 in which the portion of the support pin inserted into the second insulation measuring hole does not come into contact with the conductor inside the branch breaker while the tip of the probe is connected to the neutral phase. The connection adapter described in. 前記端子は板状であり、
前記端子の縁のうち直線状の一辺のみが前記支持体から露出する請求項１から請求項３の何れか一項に記載の接続アダプタ。 The terminal has a plate shape
The connection adapter according to any one of claims 1 to 3, wherein only one linear side of the edge of the terminal is exposed from the support. 前記支持体は、
第１切り欠きが形成された第１絶縁板と、
第２切り欠きが形成された第２絶縁板と、
を備え、
前記端子は、前記一辺が前記第１切り欠き及び前記第２切り欠きから露出するように、前記第１絶縁板と前記第２絶縁板とによって挟まれた請求項４に記載の接続アダプタ。 The support
The first insulating plate in which the first notch is formed and
The second insulating plate with the second notch formed and
With
The connection adapter according to claim 4, wherein the terminal is sandwiched between the first insulating plate and the second insulating plate so that one side of the terminal is exposed from the first notch and the second notch.
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