JP7395434B2 - Current detection device and electricity meter using the same - Google Patents

Description

The present invention relates to a current detection device that detects the magnitude of a current flowing through a conductor by magnetoelectric conversion, and a watthour meter using the same.

2. Description of the Related Art Conventionally, current detection devices are known that are installed in general homes, factories, offices, etc. to detect load current. This current detection device includes, for example, a conductor that generates a magnetic field when a load current flows, and a magnetoelectric conversion unit that detects the magnetic field generated by the conductor. The magnetoelectric converter is formed by a coil in which a conducting wire such as an enameled wire is wound around a donut-shaped magnetic core called a toroidal core. When assembling this current detection device, it is necessary to pass a conductor through the hole in the magnetic core, which is a time-consuming process, which poses a problem in that the current detection device becomes expensive (see Patent Document 1).

This problem has been solved by a current detection device that can pass a conductor by dividing the magnetic body part into two and sliding the magnetic body part (see Patent Document 2).

Japanese Patent Application Publication No. 2005-37297 Patent No. 5731876

However, when sliding and fixing the magnetic body part, there have been cases where the engagement has come off and the current detection device is not fixed. Therefore, it was necessary to securely fix it.

An object of the present invention is to provide a current detection device and a watt-hour meter using the same, which can improve reliability by sliding and securely fixing a magnetic part when a conductor is assembled into the current detection device. do.

In order to solve the above-mentioned problems, claim 1 of the present invention provides a first magnetic circuit that is arranged so as to surround the conductor on a plane perpendicular to the direction of the current to be measured flowing through the conductor and forms a part of the magnetic circuit. a magnetic body part, a second magnetic body part arranged to face the first magnetic body part, a current detection part arranged in a magnetic path of the magnetic circuit to detect a magnetic field, and a first magnetic body part to which the first magnetic body part is attached. a first insulator part having a body mounting part, a first insulating sliding part, and a first fixed sliding part; a second current detection mounting part to which the current detection part is mounted; and a second magnetic part to which the second magnetic body part is mounted. a second insulating sliding part that fits and slides on the first insulating sliding part of the first insulating part; a second sliding fixing part; and a second opening-side closing fixing part. 2 insulator parts, a fixed sliding part that fits and slides on the first fixed sliding part of the first insulator part, and a fixed sliding part that fits and slides on the second fixed sliding part of the second insulator part. A fixed sliding fixing part with a snap-fit structure having a claw part at the tip for fixing the sliding, and a fixed opening side closing fixing part that fits and fixes to the second opening side closing fixing part of the second insulator part. a fixing component having a fixed part, the second insulator part is slid in a direction away from the first insulator part to be in an open state, and after the conductor is inserted into the central part, the second insulator part is approached to the first insulator part. After sliding the second insulator part in the direction of the closed state, the fixing part is slid so that the claw part of the fixing sliding fixing part of the fixing part becomes the second insulator part of the second insulator part. At the same time as fitting into the sliding fixing part, the fixed opening side closing fixing part of the fixing component fits into the second opening side closing fixing part of the second insulator part.

According to a second aspect of the present invention, a second sliding side closing fixing part is provided in the second insulator part, and the second sliding side closing fixing part is fixed to the fixed part in correspondence with the second sliding side closing fixing part of the second insulator part. A sliding side closing fixing portion is provided, and when the fixed component in the open state is slid to the closed state, the claw portion of the fixed sliding fixing portion of the fixed component engages with the second sliding portion of the second insulator portion. At the same time as fitting into the dynamic fixing part, the fixed opening side closing fixing part of the fixing part is engaged with the second opening side closing fixing part of the second insulator part, and the fixed sliding side closing fixation of the fixing part is engaged. The second sliding side closing/fixing portion of the second insulator portion is fitted into the second sliding side closing/fixing portion of the second insulator portion.

Claim 3 of the present invention provides a second opening side detection mounting part for attaching an opening side closed fixing detection part in the vicinity of the second opening side closing fixing part of the second insulator part, and When the opening-side closed fixation detecting section is attached to the mounting section and the fixed component in the open state is slid to the closed state, the claw portion of the fixed sliding fixing section of the fixed component is connected to the second insulator section. At the same time, when the fixed opening side closing fixing part of the fixing part fits into the second opening side closing fixing part of the second insulator part, the fixing part is fixed. It is characterized in that the opening side close fixing section contacts the opening side close fixing detection section to detect the closed state.

According to a fourth aspect of the present invention, a second opening-side detection mounting portion for mounting an opening-side closed fixing detection portion is provided in the vicinity of the second opening-side closing fixing portion of the second insulator portion, and the second insulator portion A second sliding side detection mounting part for attaching a sliding side closed fixing detection part is provided near the second sliding side closed fixing part, and an opening side closed fixing detection part is provided in the second opening side detection mounting part. , when a sliding side close fixing detection part is attached to the second sliding side detection mounting part, and the fixed part in the open state is slid to the closed state, the claw part of the fixed sliding fixing part of the fixed part is fitted into the second sliding fixing part of the second insulator section, and at the same time, the fixed opening side closing fixing part of the fixing component is fitting into the second opening side closing fixing part of the second insulator part. At the same time, the fixed opening side closing fixing portion of the fixed component contacts the opening side closing fixing detection portion to detect the closed state, and at the same time, the fixed sliding side closing fixing portion of the fixed component contacts the opening side closed fixing detection portion. When fitting into the second sliding side closing fixing section, the fixed sliding side closing fixing section of the fixed component contacts the sliding side closing fixing detection section to detect the closed state.

A watt-hour meter according to claim 5 of the present invention includes a current detection device according to any one of claims 1 to 4, a voltage detection section that detects a voltage generated in a conductor, and a current detection device that detects a voltage generated in a conductor. The present invention is characterized by comprising a power calculation section that calculates electric power or electric energy based on the current detected by the voltage detection section and the voltage detected by the voltage detection section.

According to the invention of claim 1, when the current detecting device is attached to the conductor, it can be securely fixed by sliding the fixed parts, so that reliability can be improved.

According to the invention of claim 2, compared to claim 1, the fixed part has a plurality of closed fixing parts, and the plurality of places can be fixed by sliding the fixed part, so that reliability is further improved. be able to.

According to the invention of claim 3, compared to claims 1 and 2, since it is possible to detect the closed fixation, it is possible to recognize that the closure is securely fixed, so that reliability can be improved.

According to the invention of claim 4, compared to claim 3, since a plurality of closed and fixed parts can be detected when the closed and fixed parts are fixed, it is possible to recognize that the closed and fixed parts are fixed more reliably, so that reliability can be improved.

According to the invention of claim 5, it is possible to realize a watt-hour meter that uses the current detection device listed in claims 1 to 4, and when the current detection device is installed when assembling the watt-hour meter, the current detection device can be reliably installed. Not only can you confirm that it is installed, but even if the current detection device should come off due to vibration or shock that occurs from the time the watt-hour meter is shipped to the time it is installed at the customer, the disconnection will be detected and the display will be displayed. It is also possible to display an abnormality on the screen and report it to the outside using a separately installed communication device.

FIG. 1 is an assembled perspective view of a current detection device according to a first embodiment of the present invention. FIG. 1 is an assembled sectional view of a current detection device according to a first embodiment of the present invention. FIG. 1 is an exploded perspective view of a current detection device according to a first embodiment of the present invention. FIG. 3 is an assembled perspective view of a current detection device according to a second embodiment of the present invention. FIG. 3 is an assembled sectional view of a current detection device according to a second embodiment of the present invention. FIG. 3 is an exploded perspective view of a current detection device according to a second embodiment of the present invention. FIG. 7 is a perspective view and an assembled sectional view of a current detection device according to a third embodiment of the present invention. FIG. 7 is a perspective view and an assembled sectional view of a current detection device according to a fourth embodiment of the present invention. It is a block diagram of the electricity meter concerning the 5th embodiment of the present invention.

EMBODIMENT OF THE INVENTION Hereinafter, a current detection device and a power meter according to an embodiment of the present invention will be described in detail with reference to the drawings.

(First embodiment)
FIGS. 1(a) to 1(d) are assembled perspective views of a current detection device according to a first embodiment of the present invention. FIGS. 2(a) to 2(c) are assembled sectional views of the current detection device according to the first embodiment of the present invention. 3(a) to 3(b) are exploded perspective views of the current detection device according to the first embodiment of the present invention.

1(a) to 1(d) and FIG. 2(a) to FIG. 2(c), the second insulator portion 5A is opened by vertically sliding it in the direction away from the first insulator portion 1A. After inserting the conductor 10 into the center and sliding the second insulator part 5A closer to the first insulator part 1A (in the vertical direction), the fixed part 6A is connected to the second insulator part 5A. A series of installation procedures up to the mated state is shown.

The current detection device includes a first magnetic body part 2A, a second magnetic body part 4A, a current detection part 3A, a first insulator part 1A, a second insulator part 5A, and a fixed part 6A.

The conductor 10 is made of conductive metal such as iron or copper. The conductor 10 generates a magnetic field when a load current, which is a current to be measured, flows therethrough.

The first magnetic body part 2A is composed of a U-shaped magnetic core as shown in FIG. It is arranged in a surrounding manner to form part of a magnetic circuit.

The second magnetic body part 4A also consists of a U-shaped magnetic core, and is disposed facing the first magnetic body part 2A, and has a 1 and 2 A of magnetic materials are arranged to surround the periphery of the conductor 10 to form part of a magnetic circuit.

The current detection unit 3A is configured of a magnetic sensor, for example, and is arranged in a magnetic path of a magnetic circuit formed by the first magnetic body part 2A and the second magnetic body part 4A, and detects a magnetic field generated by a current flowing through the conductor 10. To detect.

The first insulator part 1A is made of resin, for example, and is fixed by sliding the second insulator part 5A in the vertical direction, and as shown in FIG. 3(b), the first magnetic body attachment part 1Aa, the first It has an insulating sliding part 1Ab and a first fixed sliding part 1Ac.

The first magnetic body attachment portion 1Aa is a U-shaped recessed portion, and the U-shaped first magnetic body portion 2A is attached thereto. The first insulating sliding portion 1Ab is formed of a convex portion, and is fitted into a second insulating sliding portion 5Ac formed of a vertically elongated hole of the second insulating portion 5A shown in FIG. 1, and slides in the vertical direction. The first fixed sliding portion 1Ac is formed of a convex portion and slides in the lateral direction by fitting into the fixed sliding portion 6Aa formed of a horizontally elongated hole of the fixed component 6A.

The second insulator part 5A is also made of resin, for example, and is arranged facing the first insulator part 1A, and as shown in FIG. 5Ab, a second insulating sliding part 5Ac, a second sliding fixing part 5Ad, and a second opening side closing fixing part 5Ae.

As shown in FIG. 3(a), the second magnetic body attachment portion 5Ab consists of a U-shaped recess, and the second magnetic body portion 4A is attached thereto. The second current detection attachment portion 5Aa is located above the right-end convex portion of the second magnetic body portion 4A attached to the second magnetic body attachment portion 5Ab, and the current detection portion 3A is attached thereto.

The second insulating sliding portion 5Ac is formed of a vertically elongated hole, and is fitted into the first insulating sliding portion 1Ab of the first insulating portion 1A to slide in the vertical direction. The second sliding fixing portion 5Ad is formed of a recess and is fitted into the claw portion 6Ac at the tip of the fixed sliding fixing portion 6Ab of the fixing component 6A to fix sliding. The second opening side closing fixing part 5Ae is made of a convex part and is fixed by fitting into the fixed opening side closing fixing part 6Ad made of a concave part of the fixing component 6A shown in FIGS. 2(c) and 3(b).

The fixed component 6A is attached to the first insulator portion 1A, and has a fixed sliding portion 6Aa, a fixed sliding fixing portion 6Ab, and a fixed opening side closing fixing portion 6Ad.

The fixed sliding portion 6Aa is formed of a horizontally elongated hole, and is fitted into the first fixed sliding portion 1Ac formed of a convex portion of the first insulator portion 1A, and slides in the lateral direction. The fixed sliding fixing part 6Ab has a snap-fit structure with a claw part 6Ac at the tip, and is fitted into the second sliding fixing part 5Ad made of a recess of the second insulator part 5A to fix sliding. . The fixed opening side closing fixing part 6Ad is made of a recessed part, and is fitted and fixed to the second opening side closing fixing part 5Ae made of a convex part of the second insulator part 5A.

Next, the operation of the current detection device of the first embodiment configured as described above will be explained. First, as shown in FIG. 1(a), the second insulator section 5A is vertically slid in a direction away from the first insulator section 1A to open it. Next, as shown in FIGS. 1(b) and 2(a), after inserting the conductor 10 into the center, slide the second insulator part 5A vertically in the direction approaching the first insulator part 1A. move it to the closed position.

Thereafter, the fixed part 6A is slid in the lateral direction, and as shown in FIG. It fits into the fixed part 5Ad.

Simultaneously with this operation, the fixed opening side closing fixing part 6Ad of the fixed part 6A fits into the second opening side closing fixing part 5Ae of the second insulator part 5A. This allows the current detection device to be fixed.

When removing this current detection device from the conductor 10, lift the claw portion 6Ac of the fixed sliding fixing portion 6Ab of the fixed component 6A, and remove the fixing component 6A from the second sliding fixing portion 5Ad of the second insulator portion 5A. The claw portion 6Ac of the sliding fixed portion 6Ab is removed and slid in the horizontal direction.

Thereafter, the current detection device can be removed from the conductor 10 by vertically sliding the second insulator section 5A in a direction away from the first insulator section 1A to open the second insulator section 5A.

In addition, in the assembled state, by covering the periphery of the claw portion 6Ac of the fixed sliding fixing portion 6Ab of the fixed component 6A with the second insulator portion 5A, the current detection device is difficult to remove, and the structure is such that it cannot be easily removed. It is also possible to

As described above, according to the current detection device of the first embodiment, when the current detection device is attached to the conductor 10, the current detection device can be securely fixed by sliding the fixing part 6A, compared to the current product. This can improve reliability.

(Second embodiment)
FIGS. 4(a) to 4(d) are assembled perspective views of a current detection device according to a second embodiment of the present invention. 5(a) to 5(c) are assembled sectional views of a current detection device according to a second embodiment of the present invention. 6(a) to 6(b) are exploded perspective views of a current detection device according to a second embodiment of the present invention.

4(a) to 4(d) and FIG. 5(a) to 5(c), the second insulator portion 5B is opened by vertically sliding it in the direction away from the first insulator portion 1B. After inserting the conductor 10 into the center and sliding the second insulator section 5B closer to the first insulator section 1B, the fixed part 6B is fitted with the second insulator section 5B. This shows the series of installation steps up to.

In the second embodiment, the second opening side closing fixing part 5Be1 of the second insulator part 5B is in the open state, as shown in FIG. 5B is provided at a location where the conductor 10 can be inserted.

Further, in the configuration of the first embodiment, as shown in FIG. 6(a), a second sliding side closing fixing portion 5Be2 consisting of a recess is provided in the second insulator portion 5B. The fixed sliding side closed fixing part 6Bd2 has a protrusion formed at the tip of the fixed part 6B shown in FIG. 6(b) so as to fit into the second sliding side closed fixing part 5Be2 of the second insulator part 5B. is provided. As shown in FIG. 6(a), the first insulator part 1B has a sliding part 1Bd which is a recess that fits into the fixed sliding side closing fixing part 6Bd2 and allows the fixed sliding side closing fixing part 6Bd2 to slide. is provided.

Next, the operation of the current detection device of the second embodiment configured as described above will be explained. First, as shown in FIG. 4(a), the second insulator section 5B is vertically slid in a direction away from the first insulator section 1B to open it. Next, as shown in FIGS. 4(b) and 5(a), after inserting the conductor 10 into the center, slide the second insulator part 5B vertically in the direction approaching the first insulator part 1B. move it to the closed position. Thereafter, the fixed part 6B is slid in the lateral direction, and as shown in FIG. It fits into the fixed part 5Bd.

At the same time as this operation, as shown in FIG. 5(c), the fixed opening side closing fixing part 6Bd1 of the fixed part 6B is engaged with the second opening side closing fixing part 5Be1 of the second insulator part 5B, and the fixed part The fixed sliding side closing fixing part 6Bd2 of 6B can be fixed by fitting into the second sliding side closing fixing part 5Be2 of the second insulator part 5B.

As described above, according to the current detection device of the second embodiment, compared to the current detection device of the first embodiment, the fixed part 6B and the second insulator part 5B have multiple closed and fixed parts, and the fixed part Since multiple locations can be fixed by sliding the 6B, reliability can be further improved.

(Third embodiment)
FIG. 7(a) is a perspective view of a current detection device according to a third embodiment of the present invention, and FIGS. 7(b) to 7(d) are assembled sectional views.

The current detection device according to the third embodiment is provided in addition to the current detection device of the first embodiment in order to detect the closed state in the vicinity of the second opening side closing fixing portion 5Ce of the second insulator portion 5C. A second opening side detection mounting part 5Cf is provided to which the opening side closed fixed detection part 301 is attached. The opening side closed fixing detection section 301 is inserted into the second opening side detection mounting section 5Cf and the groove of the second insulator section 5C, and detects current from the vicinity of the second opening side closing fixing section 5Ce of the second insulator section 5C. It extends to the vicinity of part 3C.

Next, the operation of the current detection device of the third embodiment configured as described above will be explained. First, when the fixed component 6C in the open state is slid laterally to the closed state as shown in FIG. It fits into the second sliding fixed part 5Cd of the body part 5C. At the same time as this operation, when the fixed opening side closing fixing part 6Cd of the fixed part 6C fits into the second opening side closing fixing part 5Ce of the second insulator part 5C, the fixed opening side closing fixing part 6Cd of the fixing part 6C can detect the closed state by contacting the opening-side closed/fixed detection section 301.

In this way, according to the current detection device of the third embodiment, compared to the current detection device of the first embodiment, it is possible to detect when the current detection device is closed and fixed, so that it is possible to reliably recognize that the current detection device is fixed. Therefore, reliability can be improved.

(Fourth embodiment)
FIG. 8(a) is a perspective view of a current detection device according to a fourth embodiment of the present invention, and FIGS. 8(b) to 8(d) are assembled sectional views.

The current detection device according to the fourth embodiment further detects a closed state in the vicinity of the second opening side closing fixing portion 5De1 of the second insulator portion 5D in addition to the current detection device according to the second embodiment. A second opening side detection mounting part 5Df1 is provided to which the opening side closed fixed detection part 401 is attached.

Further, a second sliding side detection mounting portion 5Df2 is provided near the second sliding side closing and fixing portion 5De2 of the second insulator portion 5D to attach a sliding side closing and fixing detection portion 402 for detecting the closed state. ing. The opening side closed/fixed detection section 401 is inserted into the second opening side detection mounting section 5Df1 and the groove, and the sliding side closed/fixed detection section 402 is inserted into the second sliding side detection mounting section 5Df2 and the groove. It extends to the vicinity of the current detection section 3D.

Next, the operation of the current detection device of the fourth embodiment configured as described above will be explained. First, when the fixed part 6D in the open state is slid laterally to the closed state as shown in FIG. It fits into the second sliding fixed part 5Dd of the body part 5D.

Simultaneously with this operation, when the fixed opening side closing fixing part 6Dd1 of the fixing part 6D is fitted into the second opening side closing fixing part 5De1 of the second insulator part 5D, the fixed opening side closing fixing part 6Dd1 of the fixing part 6D can detect the closed state by contacting the opening-side closed/fixed detection section 401.

Simultaneously with this operation, when the fixed sliding side closing fixing part 6Dd2 of the fixed part 6D is fitted into the second sliding side closing fixing part 5De2 of the second insulator part 5D, the fixed sliding side closing part 6D of the fixed part 6D The fixed part 6Dd2 can contact the sliding side closed fixed detection part 402 to detect the closed state.

In the current detection device of the fourth embodiment, an example has been described in which the closed fixing part, the detection mounting part, and the closed fixing detection part are provided in two places. Two or more locations may be provided.

(Fifth embodiment)
FIG. 9 is a block diagram of a power meter according to a fifth embodiment of the present invention. A watt-hour meter according to a fifth embodiment of the present invention is a watt-hour meter that uses the current detection device according to the first to fourth embodiments described above. This power meter includes a current detection device 51, a voltage detection section 52, a power calculation section 53, a display section 54, a closed/fixed detection section 55, a recording section 56, and a communication device 57.

As the current detection device 51, any of the current detection devices according to the first embodiment to the fourth embodiment described above is used. The current detection device 51 detects the current used by the consumer's load (AI), converts it into an electrical signal corresponding to the current used, and outputs the electrical signal.

The voltage detection unit 52 is a part that detects the voltage of the system under test, and is composed of a voltage transformer, a voltage dividing resistor such as an attenuator, etc., and detects the working voltage (VI) used by the consumer's load. It detects it, converts it into a low-level voltage signal that is directly proportional to the used voltage, and outputs it.

The power calculation unit 53 calculates the amount of power based on the current flowing through the conductor 10 detected by the current detection device 51 and the voltage of the conductor 10 detected by the voltage detection unit 52. Specifically, the power calculation unit 53 is configured with a digital multiplication circuit, a DSP (digital signal processor), etc., and receives a signal related to the current used (AI) output from the current detection device 51 and a signal from the voltage detection unit 52. It is multiplied by the output signal related to the working voltage (VI) and converted into data (AI/VI) that is directly proportional to the power used by the consumer.

Further, the power calculation unit 53 edits and outputs the calculation result of data (AI/VI) directly proportional to the power usage as usage data. Note that the usage data here refers to data related to the power usage of the consumer, such as the total integrated power usage used by the consumer's load and the time slot usage for each time slot.

This usage data is recorded in a recording section 56 made up of a record holding device or the like, and is displayed on a display section 54 made up of a liquid crystal display or the like. Further, the open/close state of the current detection device 51 is also recorded in the recording unit 56 by the closed/fixed detection unit 55 . The usage data and the opening/closing state records recorded in the recording section 56 can be reported to the center device 58 through the communication device 57 .

As explained above, according to the watt-hour meter according to the fifth embodiment of the present invention, it is possible to confirm that the current detection device is reliably attached when installing the current detection device when assembling the watt-hour meter, and Even if the current detection device should come off while in use at a customer, the disconnection of the current detection device will be detected and the abnormality will be displayed on the display, and the communication device 57 will notify the center device 58 of the occurrence of the abnormality. can do.

1A to 1D First insulator parts 1Aa to 1Ba First magnetic body attachment parts 1Ab to 1Db First insulating sliding parts 1Ac to 1Dc First fixed sliding parts 2A to 2D First magnetic body parts 3A to 3D Current detection part 4A ~4D Second magnetic body parts 5A to 5D Second insulator parts 5Aa to 5Da Second current detection mounting parts 5Ab to 5Db Second magnetic body mounting parts 5Ac to 5Dc Second insulating sliding parts 5Ad to 5Dd Second sliding fixation Parts 5Ae, 5Be1, 5Ce, 5De1 Second opening side closing fixing parts 5Cf, 5Df1 Second opening side detection mounting parts 5Be2, 5De2 Second sliding side closing fixing parts 5Df2 Second sliding side detection mounting parts 6A to 6D Fixed parts 6Aa to 6Da Fixed sliding parts 6Ab to 6Db Fixed sliding fixed parts 6Ac to 6Dc Fixed claw parts 6Ad, 6Bd1, 6Cd, 6Dd1 Fixed opening side closing fixing parts 6Bd2, 6Dd2 Fixed sliding side closing fixing parts 10 Conductor 51 Current detection device 52 Voltage detection section 53 Power calculation section 54 Display section 55 Closed fixation detection section 56 Recording section 57 Communication device 58 Center device 301, 401 Opening side closed fixation detection section 402 Sliding side closed fixation detection section

Claims (5)

A first magnetic body part that is arranged to surround the conductor on a plane perpendicular to the direction of the current to be measured flowing through the conductor and forms a part of a magnetic circuit, and a second magnetic body part that is arranged opposite to the first magnetic body part. a magnetic body part;
a current detection unit that is arranged in a magnetic path of the magnetic circuit and detects a magnetic field;
a first insulator part having a first magnetic body attachment part to which the first magnetic body part is attached, a first insulating sliding part, and a first fixed sliding part;
A second current detection mounting part to which the current detection part is attached, a second magnetic body attachment part to which the second magnetic body part is attached, and a first insulating sliding part that fits and slides on the first insulation sliding part of the first insulator part. a second insulator portion having a second insulating sliding portion, a second sliding fixing portion, and a second opening side closing fixing portion;
a fixed sliding part that fits into and slides on a first fixed sliding part of the first insulator part; a tip that fits into a second sliding fixed part of the second insulator part to fix sliding; a fixed sliding fixing part with a snap-fit structure having a claw part, and a fixing part having a fixed opening side closing fixing part that fits and fixes to the second opening side closing fixing part of the second insulator part. ,
After sliding the second insulator part in the direction away from the first insulator part to open it and inserting the conductor into the central part, slide the second insulator part in the direction approaching the first insulator part. After sliding the part into the closed state, sliding the fixing part so that the claw part of the fixing sliding fixing part of the fixing part fits into the second sliding fixing part of the second insulator part. At the same time, the fixed opening side closing fixing part of the fixed component fits into the second opening side closing fixing part of the second insulator part. A second sliding side closing fixing part is provided in the second insulator part, and a fixed sliding side closing fixing part is provided in the fixed part corresponding to the second sliding side closing fixing part of the second insulator part. ,
When the fixed part in the open state is slid to the closed state, the claw part of the fixed sliding fixing part of the fixed part is fitted into the second sliding fixing part of the second insulator part, and at the same time, The fixed opening side closing fixing part of the fixed part engages with the second opening side closing fixing part of the second insulator part, and the fixed sliding side closing fixing part of the fixed part engages with the second opening side closing fixing part of the second insulator part. The current detecting device according to claim 1, wherein the current detecting device is fitted into the second sliding side closing fixing portion. A second opening side detection mounting part for attaching an opening side closed fixation detection part is provided near the second opening side closed fixation part of the second insulator part, and the opening side closed fixation part is attached to the second opening side detection mounting part. Install the detection part,
When the fixed part in the open state is slid to the closed state, the claw part of the fixed sliding fixing part of the fixed part is fitted into the second sliding fixing part of the second insulator part, and at the same time, When the fixed opening side closing fixing part of the fixed part fits into the second opening side closing fixing part of the second insulator part, the fixed opening side closing fixing part of the fixed part fits into the opening side closing fixing detection part. 2. The current detection device according to claim 1, wherein the current detection device detects the closed state by contacting the current detection device. A second opening side detection mounting part for attaching an opening side closed fixing detection part is provided near the second opening side closing fixing part of the second insulator part, and the second sliding side closing fixation part of the second insulator part is provided. a second sliding side detection mounting part to which a sliding side closed/fixed detection part is attached near the part; an opening side closed/fixed detection part is provided in the second opening side detection mounting part;
When a sliding side close fixing detection part is attached to the second sliding side detection mounting part, and the fixed part which is in the open state is slid to the closed state, the claw part of the fixed sliding fixing part of the fixed part is When the fixed opening side closing fixing part of the fixing component fits into the second opening side closing fixing part of the second insulator part at the same time as fitting into the second sliding fixing part of the second insulator part. At the same time, the fixed opening side closing fixing part of the fixed component contacts the opening side closing fixing detection part to detect the closed state, and at the same time, the fixed sliding side closing fixing part of the fixed part contacts the second insulator part. 2. A fixed sliding side closing fixing part of the fixing component contacts the sliding side closing fixing detection part to detect the closed state when the fixing part is fitted into the sliding side closing fixing part. 2. The current detection device according to 2. The current detection device according to any one of claims 1 to 4,
a voltage detection unit that detects the voltage generated in the conductor;
A power meter comprising: a power calculation unit that calculates electric power or electric energy based on the current detected by the current detection device and the voltage detected by the voltage detection unit.

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