JP6056014B2 - Power distribution equipment - Google Patents
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- JP6056014B2 JP6056014B2 JP2012163895A JP2012163895A JP6056014B2 JP 6056014 B2 JP6056014 B2 JP 6056014B2 JP 2012163895 A JP2012163895 A JP 2012163895A JP 2012163895 A JP2012163895 A JP 2012163895A JP 6056014 B2 JP6056014 B2 JP 6056014B2
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Description
本発明は、端子台や配線用遮断器等の配電機器の接続端子部に設置可能な電流測定手段を備えたものである。 The present invention includes current measuring means that can be installed in a connection terminal portion of a power distribution device such as a terminal block or a circuit breaker.
配線用遮断器を流れる電流を測定する手段として、配線用遮断器の入力線にカレントトランスを取り付ける方法（特許文献１の図３）や、配線用遮断器中に電流センサを組み込む方法（特許文献１の図４）が知られている。 As means for measuring the current flowing through the circuit breaker for wiring, a method of attaching a current transformer to the input line of the circuit breaker for wiring (FIG. 3 of Patent Document 1), or a method of incorporating a current sensor in the circuit breaker for wiring (Patent Document) 1) is known.
しかし、配線用遮断器の入力線にカレントトランスを取り付ける方法では、入力線を配線用遮断器に接続する前に電流センサを取り付けておく必要があり、接続後に電流センサの組み込みが必要になった場合には、接続を解除して組み込み作業を行う必要があり不便であるという問題があった。 However, in the method of attaching the current transformer to the input line of the circuit breaker for wiring, it is necessary to attach the current sensor before connecting the input line to the circuit breaker for wiring, and it is necessary to incorporate the current sensor after connection. In this case, there is a problem that it is inconvenient because it is necessary to release the connection and perform the installation work.
また、配線用遮断器中に電流センサを組み込む方法では、電流センサの組み込みスペースを確保するために配線用遮断器を長幅とする必要がある問題があった。さらに、配線用遮断器内部において電流センサからの発熱による影響を低減するためには、必要時にのみ電流センサを組み込んで使用することが望ましいが、配線用遮断器中に電流センサを組み込む方法では、電流センサの着脱が自由に行えず不便であるという問題があった。 In addition, in the method of incorporating the current sensor into the circuit breaker for wiring, there is a problem that the circuit breaker for wiring needs to be long in order to secure a space for incorporating the current sensor. Furthermore, in order to reduce the influence of heat generated from the current sensor inside the circuit breaker, it is desirable to incorporate the current sensor only when necessary, but in the method of incorporating the current sensor in the circuit breaker, There was a problem that the current sensor could not be attached and detached freely, which was inconvenient.
本発明の目的は上記した従来の問題点を解決し、端子台・配線用遮断器などの配電機器における電流センサの設置に際し、簡単な作業で着脱自在に固定保持させることができ、かつ、電流センサ取り付け用のスペースのために配電機器を大型化することなく、配電機器に流れる電流値を測定可能な構造を提供することである。 The object of the present invention is to solve the above-mentioned conventional problems, and when installing a current sensor in a power distribution device such as a terminal block or a circuit breaker for wiring, it can be detachably fixed and held by a simple operation, and To provide a structure capable of measuring the value of a current flowing through a power distribution device without increasing the size of the power distribution device due to a space for mounting a sensor.
上記課題を解決するためになされた本発明の配電機器は、電流センサを着脱自在に備えた配電機器であって、電流センサを保持する電流センサ固定部が、配電機器の端部に形成された接続端子部に配置され、電流センサ固定部は、外部から接続される配線と接続端子部とを接続して形成される電路が貫通する筒状部と、この筒状部に形成され、前記配線と接続端子部とを接続する接続部材の裏面を受けて保持する接続部材保持面とを備え、筒状部の周縁に渡って、基板の一端から対をなす腕部を突出させてその内側を端部が開放された配線挿通部とするとともに、前記腕部の各々に磁気検出素子を搭載した電流センサを着脱自在に保持することを特徴とするものである。 The power distribution device of the present invention made to solve the above problems is a power distribution device having a current sensor detachably, and a current sensor fixing portion for holding the current sensor is formed at an end of the power distribution device. The current sensor fixing portion disposed in the connection terminal portion is formed in the cylindrical portion through which an electric circuit formed by connecting the wiring connected from the outside and the connection terminal portion passes therethrough , and the wiring And a connecting member holding surface that receives and holds the back surface of the connecting member that connects the connecting terminal portion, and extends a pair of arm portions from one end of the substrate over the periphery of the cylindrical portion to with a wiring insertion part whose ends are open, and is characterized in that to hold the current sensor mounted with the magnetic sensor in each of the arms detachably.
請求項２記載の発明は、請求項１記載の配電機器において、電流センサ固定部の筒状部に、前記接続部材を貫通させたことを特徴とするものである。 According to a second aspect of the invention, the power distribution apparatus of claim 1, is characterized in the cylindrical portion of the current sensor mount that was passed through the connecting member.
請求項３記載の発明は、請求項２記載の配電機器において、該接続部材が、ねじ形状を有し、電流センサ固定部の筒状部には、ねじ軸部を貫通させ、更に、ねじ頭部の裏面を前記接続部材保持面に保持させたことを特徴とするものである。 According to a third aspect of the present invention, in the power distribution device according to the second aspect, the connecting member has a screw shape, the cylindrical portion of the current sensor fixing portion is passed through the screw shaft portion, and the screw head The back surface of the portion is held on the connecting member holding surface .
本発明の配電機器は、該電流センサを保持する電流センサ固定部を、配電機器の端部に形成された接続端子部の上端に配置し、電流センサ固定部に、外部から接続される配線と接続端子部とを接続して形成される電路が貫通する筒状部と、この筒状部に形成され、配線と接続端子部とを接続する接続部材の裏面を受けて保持する接続部材保持面とを備え、筒状部の周縁に渡って、基板の一端から対をなす腕部を突出させてその内側を端部が開放された配線挿通部とするとともに、腕部の各々に磁気検出素子を搭載した電流センサを着脱自在に保持するものであるため、電流センサを、簡単な作業により、電流センサ固定部に着脱自在に固定保持させることができる。また、電流センサ固定部は、配電機器の端部に形成された接続端子部のスペースを利用して配置したため、従来技術のように、電流センサの組み込みスペースを確保するために配電機器を長幅とする必要がなく、コンパクトで美観にも優れたものとすることができる。 The power distribution device according to the present invention includes a current sensor fixing portion for holding the current sensor disposed at an upper end of a connection terminal portion formed at an end portion of the power distribution device, and wiring connected to the current sensor fixing portion from the outside. A cylindrical part through which an electric circuit formed by connecting the connection terminal part passes , and a connection member holding surface that is formed in the cylindrical part and receives and holds the back surface of the connection member that connects the wiring and the connection terminal part. A pair of arm portions protruding from one end of the substrate over the periphery of the cylindrical portion, and a wire insertion portion having an open end on the inside thereof, and a magnetic detecting element on each arm portion the reason is to hold the current sensor mounted detachably, a current sensor, by a simple operation, it can be detachably fixed retaining the current sensor mount. In addition, since the current sensor fixing part is arranged using the space of the connection terminal part formed at the end of the power distribution device, the power distribution device has a long width in order to secure a space for mounting the current sensor as in the conventional technology. It can be made compact and excellent in aesthetics.
外部から接続される配線と接続端子部との接続をねじで行う場合、接続端子部の上端に配置した電流センサ固定部に保持された電流センサに対し、ねじの締めつけ荷重がかかり、電流センサが破損する恐れがあるところ、請求項３記載の発明によれば、電流センサ固定部を、ねじ頭部の裏面を受けて保持する接続部材保持面と、ねじ軸部を貫通させる筒状部を有する構造とすることにより、ねじの締めつけ荷重を、これらの保持面と筒状部で分散し、電流センサにかかる締めつけ荷重を低減させることができる。 When connecting the externally connected wiring to the connection terminal part with screws, the screw tightening load is applied to the current sensor held by the current sensor fixing part arranged at the upper end of the connection terminal part. According to the third aspect of the present invention, there is a connection member holding surface that holds the current sensor fixing portion by receiving the back surface of the screw head, and a cylindrical portion that penetrates the screw shaft portion. By adopting the structure, the tightening load of the screw can be distributed between the holding surface and the cylindrical portion, and the tightening load applied to the current sensor can be reduced.
以下に本発明の好ましい実施形態を示す。 Preferred embodiments of the present invention are shown below.
配線用遮断器１の筐体内部には、図１、図２に示すように、バイメタル２と、可動接触子３と、引き外し機構部４が順に配置され、回路に過電流が流れるとバイメタル２が加熱により湾曲して引き外し機構部４を作動させ、可動接触子３を引き外して過電流回路遮断動作（トリップ）を行う構造となっている。 As shown in FIG. 1 and FIG. 2, a bimetal 2, a movable contact 3, and a tripping mechanism unit 4 are arranged in order inside the casing of the circuit breaker 1 for wiring, and when an overcurrent flows in the circuit, the bimetal 2 is bent by heating to operate the tripping mechanism unit 4, and the movable contactor 3 is pulled out to perform an overcurrent circuit interruption operation (trip).
配線用遮断器１の一端には電源側端子部５が、他端には負荷側端子部６からなる接続端子部が形成されている。いずれの接続端子部５，６でも、複数の端子部が並列配置されており、隣接する端子部間には、仕切壁１５が立設されている。 A power supply side terminal portion 5 is formed at one end of the circuit breaker 1 for wiring, and a connection terminal portion including a load side terminal portion 6 is formed at the other end. In any of the connection terminal portions 5 and 6, a plurality of terminal portions are arranged in parallel, and a partition wall 15 is erected between adjacent terminal portions.
各接続端子部５，６は、外部から接続される配線となる電線１６と端子部５，６とを接続する接続部材となる接続ねじ１７を備えている。なお、本実施形態においては各接続端子部５、６に接続される配線は電線１６に限るものではなく銅バーであっても良いものである。 Each of the connection terminal portions 5 and 6 includes a connection screw 17 serving as a connection member for connecting the electric wire 16 serving as a wiring connected from the outside and the terminal portions 5 and 6. In addition, in this embodiment, the wiring connected to each connection terminal part 5 and 6 is not restricted to the electric wire 16, and may be a copper bar.
本実施形態では、電流センサ７を着脱自在に保持する電流センサ固定部８が、負荷側端子部６の上端に配置されている。このように、負荷側端子部６の上端スペースを利用することにより、配線用遮断器１を長幅方向で、電流センサの組み込みスペースを別途に確保することなく、電流センサ７を配置することができる。また、電流センサ７は必要に応じて着脱可能となるものである。更に、電流センサ７に対しては、直流電源の供給を行うために、図示しない電源線や信号線が接続されるが、電流センサ７を、電線１６よりも下側に配置することにより、これらの電源線や信号線の配線スペースも、邪魔にならない箇所に確保することができる。なお、本発明のような電流センサ７は配線用遮断器１の外部に設置されることになるので、配線用遮断器1内部の熱だまりを防ぐものである。 In the present embodiment, a current sensor fixing portion 8 that detachably holds the current sensor 7 is disposed at the upper end of the load side terminal portion 6. Thus, by using the upper end space of the load side terminal portion 6, the current breaker 1 can be arranged in the long width direction, and the current sensor 7 can be arranged without separately securing a current sensor installation space. it can. Further, the current sensor 7 can be attached and detached as necessary. Further, a power source line and a signal line (not shown) are connected to the current sensor 7 in order to supply a direct current power. However, by arranging the current sensor 7 below the electric wire 16, The wiring space for the power line and the signal line can be secured in an unobstructed place. In addition, since the current sensor 7 according to the present invention is installed outside the circuit breaker 1 for wiring, heat accumulation inside the circuit breaker 1 for wiring is prevented.
電流センサ固定部８は、図３に示すように、接続ねじ１７のねじ軸部１８を貫通させる筒状部１９と、ねじ頭部２０の裏面を受けて保持する接続部材保持面２１と、負荷側端子部６と接して配置される端子部保持面２２を有し、断面が略「工」字状に形成されている。 As shown in FIG. 3, the current sensor fixing portion 8 includes a cylindrical portion 19 that passes through the screw shaft portion 18 of the connection screw 17, a connection member holding surface 21 that receives and holds the back surface of the screw head 20, and a load. It has the terminal part holding surface 22 arrange | positioned in contact with the side terminal part 6, and the cross section is formed in substantially "work" character shape.
接続部材保持面２１と端子部保持面２２は、四角形状で、端子部ごとに仕切壁１５で仕切られた空間に嵌りこむように形成されている。これにより、電流センサ固定部８が空間内に嵌め込まれた後、接続ねじ１７の締結時に、接続部材保持面２１及び端子部保持面２２が仕切壁１５に当接するため、連動して回動する現象を回避することができる。 The connection member holding surface 21 and the terminal portion holding surface 22 are formed in a quadrangular shape so as to fit into the space partitioned by the partition wall 15 for each terminal portion. Thus, after the current sensor fixing portion 8 is fitted in the space, the connecting member holding surface 21 and the terminal portion holding surface 22 abut against the partition wall 15 when the connecting screw 17 is fastened, and thus rotate in conjunction with each other. The phenomenon can be avoided.
また、接続ねじ１７の締結時に発生する締め付け荷重が、接続部材保持面２１から筒状部１９と端子部保持面２２を介して分散されるため、接続ねじ１７の締結時に発生する締め付け荷重が、電流センサ７に直接加わり、電流センサ７を破損する危険を回避することができる。 Further, since the tightening load generated when the connection screw 17 is fastened is dispersed from the connection member holding surface 21 via the tubular portion 19 and the terminal portion holding surface 22, the tightening load generated when the connecting screw 17 is fastened is The risk of damaging the current sensor 7 by directly applying to the current sensor 7 can be avoided.
電流センサ固定部８は、樹脂体、あるいは、導電性のある金属体のいずれで形成したものであってもよい。ただし、樹脂体で形成する場合には、電路（固定接触子の接点〜負荷側端子部６〜電流センサ固定部８(樹脂体の場合は省略)〜接続ねじ１７〜電線１６）を確保するために、接続ねじ１７のねじ軸部１８の長さを十分確保し、ねじ軸部１８の先端が筒状部１９を貫通して、負荷側端子部６にまで達する長さとする必要がある。 The current sensor fixing portion 8 may be formed of either a resin body or a conductive metal body. However, in the case of forming with a resin body, in order to secure an electric path (contact of fixed contact, load side terminal portion 6 to current sensor fixing portion 8 (omitted in the case of resin body) to connection screw 17 to electric wire 16). In addition, it is necessary to secure a sufficient length of the screw shaft portion 18 of the connection screw 17 so that the tip of the screw shaft portion 18 penetrates the cylindrical portion 19 and reaches the load side terminal portion 6.
ここで、電流センサ７は、図３に示すように、基板９の一端から一対の腕部１０を突出させてその内側を端部が開放された配線挿通部１０ａを形成した略Ｕ字構造を有するものであり、電流センサ固定部８への取り付け時には、電流センサ固定部８の筒状部１９を、腕部１０間の配線挿通部１０ａに嵌め込むようにして簡単に取り付け作業を行うことができる。 Here, as shown in FIG. 3, the current sensor 7 has a substantially U-shaped structure in which a pair of arm portions 10 protrude from one end of the substrate 9 and a wiring insertion portion 10 a in which the end portions are open is formed. Thus, when attaching to the current sensor fixing portion 8, the cylindrical portion 19 of the current sensor fixing portion 8 can be easily attached so as to be fitted into the wiring insertion portion 10 a between the arm portions 10.
電流センサ７の腕部１０には、図４に示すように、磁気検出素子１１を搭載している。 As shown in FIG. 4, a magnetic detection element 11 is mounted on the arm portion 10 of the current sensor 7.
電流センサ７に搭載された磁気検出素子１１は、腕部１０間の配線挿通部１０ａに配置された電路となる筒状部１９または接続ねじ１７に流れる電流によって生じる磁場を検知するものであり、基板９には、これらの磁気検出素子１１の検知出力を処理して接続端子に流れる電流値を算出する集積回路１２も搭載されている。本実施形態では、磁気検出素子１１を各腕部１０に各１個ずつ搭載しているが、複数搭載したものであっても良い。複数搭載することにより、更に正確に接続端子に流れる電流を調査することが可能である。 The magnetic detection element 11 mounted on the current sensor 7 detects a magnetic field generated by a current flowing through the cylindrical portion 19 or the connection screw 17 serving as an electric path disposed in the wiring insertion portion 10a between the arm portions 10, The substrate 9 is also mounted with an integrated circuit 12 that processes the detection output of these magnetic detection elements 11 and calculates the value of the current flowing through the connection terminal. In the present embodiment, one magnetic detection element 11 is mounted on each arm 10, but a plurality of magnetic detection elements 11 may be mounted. By mounting a plurality, it is possible to more accurately investigate the current flowing through the connection terminal.
このように、基板状の電流センサを使用することにより、従来型のコア状の電流センサを使用する場合と比較して、電流センサの配置スペースを大きく削減することができる。また、従来型のコア状の電流センサでは、電流センサの設置に際し、コア状の電流センサの内部に配線を通す必要があり、事後的にＣＴを取り付けたい場合においては、全ての配線を取り外して作業を行う必要があり、組み込み作業に手間がかかるという問題があったが、前記の電流センサ７は、基板９の一端を開放させた構造を有するため、各種配線がなされた状態においても、容易に組み込み作業を行うことができる。 As described above, by using the substrate-shaped current sensor, it is possible to greatly reduce the arrangement space of the current sensor as compared with the case where the conventional core-shaped current sensor is used. In addition, in the conventional type core-shaped current sensor, when installing the current sensor, it is necessary to pass the wiring through the core-shaped current sensor. However, the current sensor 7 has a structure in which one end of the substrate 9 is opened, so that it is easy even when various wirings are made. Can be built into.
本実施形態において、電流センサ７は、図４に示すケース１３で覆った状態で使用される。ケース１３は、電流センサ７と同様に、一対の腕部１４を有する略Ｕ字構造に形成され、該腕部１４間に、電流センサ固定部８の筒状部１９を弾性的に差し込み可能とした取付部を備えている。 In the present embodiment, the current sensor 7 is used in a state covered with a case 13 shown in FIG. Similar to the current sensor 7, the case 13 is formed in a substantially U-shaped structure having a pair of arm portions 14, and the cylindrical portion 19 of the current sensor fixing portion 8 can be elastically inserted between the arm portions 14. Provided with a mounting portion.
電路と磁気検出素子１１との位置関係にずれが生じると電流の検出誤差に影響を与えてしまうため、電流センサ７はガタツキを生じないように配置することが好ましい。本実施形態では、仕切壁１５で左右方向のガタツキを防止し、接続部材保持面２１と端子部保持面２２で上下方向のガタツキを防止することができる。 If the positional relationship between the electric path and the magnetic detection element 11 is deviated, the current detection error is affected. Therefore, it is preferable that the current sensor 7 is arranged so as not to cause backlash. In the present embodiment, the partition wall 15 can prevent backlash in the left-right direction, and the connection member holding surface 21 and the terminal portion holding surface 22 can prevent backlash in the vertical direction.
上記実施形態では、電流センサ固定部８の形状は、断面が略「工」字状に形成されたものとして説明したが、図５に示す凸状、あるいはＴ状のような形状とすることもできる。凸状に形成した場合においては、筒状部１９の開放端部側の面がねじ頭部２０の裏面を受けて保持する接続部材保持面２１となり、Ｔ状に形成した場合は開放端部側の面が、負荷側端子部６と接して配置される端子部保持面２２となるものである。電流センサ固定部８としては、少なくとも、接続ねじ１７のねじ軸部１８を貫通させ、電流センサ７を保持する筒状部１９が形成されていれば良い。 In the above-described embodiment, the current sensor fixing portion 8 has been described as having a cross-section that is formed in a substantially “engine” shape. However, the current sensor fixing portion 8 may have a convex shape shown in FIG. it can. When formed in a convex shape, the surface on the open end side of the cylindrical portion 19 becomes a connection member holding surface 21 that receives and holds the back surface of the screw head 20, and when formed in a T shape, the open end side This surface becomes the terminal portion holding surface 22 arranged in contact with the load side terminal portion 6. As the current sensor fixing portion 8, at least a cylindrical portion 19 that passes through the screw shaft portion 18 of the connection screw 17 and holds the current sensor 7 may be formed.
本発明においては、配線用遮断器１の接続端子部の上端に電流センサ固定部８を設置させて使用するものを説明したが、配線用遮断器１の下方に向かって突出させて形成する裏面配線用端子の場合でも使用することができる。この場合は電流センサ固定部８を接続端子部の下端に配置するものである。何れにおいても、電流センサ固定部８は電路が通過する位置に配置する必要がある。 In the present invention, the current sensor fixing portion 8 is installed at the upper end of the connection terminal portion of the circuit breaker 1 for use. However, the back surface is formed by projecting downward from the circuit breaker 1 for wiring. It can also be used for wiring terminals. In this case, the current sensor fixing portion 8 is arranged at the lower end of the connection terminal portion. In any case, it is necessary to arrange the current sensor fixing portion 8 at a position where the electric circuit passes.
なお、本発明においては、配電機器として配線用遮断器１を説明したものであるが、配線用遮断器１に限らず、端子台など、接続端子部が形成されるものであれば本発明における電流センサ固定部８を利用することができるものである。 In addition, in this invention, although the circuit breaker 1 for wiring is demonstrated as a power distribution apparatus, if not only the circuit breaker 1 for wiring but a connection terminal part, such as a terminal block, is formed in this invention. The current sensor fixing part 8 can be used.
１ 配線用遮断器
２ バイメタル
３ 可動接触子
４ 引き外し機構部
５ 電源側端子部
６ 負荷側端子部
７ 電流センサ
８ 電流センサ固定部
９ 基板
１０ 腕部
１０ａ 配線挿通部
１１ 磁気検出素子
１２ 集積回路
１３ ケース
１４ 腕部
１５ 仕切壁
１６ 電線
１７ 接続ねじ
１８ ねじ軸部
１９ 筒状部
２０ ねじ頭部
２１ 接続部材保持面
２２ 端子部保持面
DESCRIPTION OF SYMBOLS 1 Circuit breaker 2 Bimetal 3 Movable contact 4 Tripping mechanism part 5 Power supply side terminal part 6 Load side terminal part 7 Current sensor 8 Current sensor fixing | fixed part 9 Board | substrate 10 Arm part 10a Wiring insertion part 11 Magnetic detection element 12 Integrated circuit 13 Case 14 Arm portion 15 Partition wall 16 Electric wire 17 Connection screw 18 Screw shaft portion 19 Tubular portion 20 Screw head 21 Connection member holding surface 22 Terminal portion holding surface
Claims (3)
電流センサを保持する電流センサ固定部が、配電機器の端部に形成された接続端子部に配置され、
電流センサ固定部は、外部から接続される配線と接続端子部とを接続して形成される電路が貫通する筒状部と、この筒状部に形成され、前記配線と接続端子部とを接続する接続部材の裏面を受けて保持する接続部材保持面とを備え、
筒状部の周縁に渡って、基板の一端から対をなす腕部を突出させてその内側を端部が開放された配線挿通部とするとともに、前記腕部の各々に磁気検出素子を搭載した電流センサを着脱自在に保持することを特徴とする配電機器。 A power distribution device with a detachable current sensor,
The current sensor fixing part for holding the current sensor is arranged at the connection terminal part formed at the end of the power distribution device,
The current sensor fixing portion is formed in the cylindrical portion through which an electric circuit formed by connecting the wiring connected from the outside and the connecting terminal portion passes therethrough , and connects the wiring and the connecting terminal portion. A connection member holding surface for receiving and holding the back surface of the connection member
Over the periphery of the cylindrical portion, with the end portion of the inside is protruded arm portion which forms one end of a pair of substrates and opened wiring insertion portion, mounted with the magnetic sensor in each of said arms A power distribution device characterized in that the current sensor is detachably held.
電流センサ固定部の筒状部には、ねじ軸部を貫通させ、
更に、ねじ頭部の裏面を前記接続部材保持面に保持させたことを特徴とする請求項２記載の配電機器。 The connecting member has a screw shape;
In the cylindrical part of the current sensor fixing part, the screw shaft part is penetrated,
The power distribution device according to claim 2 , wherein the back surface of the screw head is held on the connection member holding surface .
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| JP2012163895A JP6056014B2 (en) | 2012-07-24 | 2012-07-24 | Power distribution equipment |
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| JP2012163895A JP6056014B2 (en) | 2012-07-24 | 2012-07-24 | Power distribution equipment |
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| WO2000079554A1 (en) * | 1999-06-22 | 2000-12-28 | Mitsubishi Denki Kabushiki Kaisha | Circuit breaker with live-state information measuring instrument |
| JP2001066327A (en) * | 1999-08-25 | 2001-03-16 | Yazaki Corp | Current sensor |
| EP1855118A4 (en) * | 2005-02-23 | 2009-12-09 | Asahi Kasei Emd Corp | Current measuring instrument |
| JP4544087B2 (en) * | 2005-08-01 | 2010-09-15 | 株式会社デンソー | Current sensor mounting structure |
| JP4798141B2 (en) * | 2008-01-18 | 2011-10-19 | 株式会社デンソー | Current sensor mounting structure |
| JP5150432B2 (en) * | 2008-09-24 | 2013-02-20 | 河村電器産業株式会社 | Breaker current detector |
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