JP2016070711A - Electroscope - Google Patents

Abstract

PROBLEM TO BE SOLVED: To detect the live state of an object to be inspected that is supplied with a DC voltage while not being held in place.SOLUTION: This electroscope, configured to be able to inspect the live state of a conductor wire 100, comprises first sensors 11a, 11b for detecting an amount to be detected that is generated while a DC current Id is flowing in the conductor wire 100 without contacting, and a processing unit 33 for measuring the current value Im of the DC current Id flowing in the conductor wire 100 on the basis of the amount to be detected that was detected by the first sensors 11a, 11b, and making a light-emitting unit 34 and a sound output unit 35 notify when the current value Im is greater than or equal to a prescribed value that the conductor wire 100 is in a first live state that is one form of the live state.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a voltage detector that inspects a live state of an inspection target.

  As this type of voltage detector, a voltage detector disclosed by the applicant in Patent Document 1 below is known. This voltage detector is configured to be able to inspect the live state (whether or not an AC voltage equal to or higher than a predetermined voltage value is supplied) of the inspection object. When inspecting the live state of the electric wire as the inspection object using this electric detector, the electric detector is pressed against the electric wire. At this time, when an AC voltage is supplied to the electric wire, a sensor brought close to the electric wire outputs a sensor signal, and a detection circuit detects the AC voltage based on the sensor signal. In this case, when the detection value detected by the detection circuit is greater than or equal to the set value, the buzzer outputs a buzzer sound and the LED emits light. On the other hand, when the detected value is less than the set value, the output of the buzzer sound from the buzzer and the light emission of the LED are maintained. Thereby, the live state of an electric wire is alert | reported.

JP 2008-185434 A (page 4-6, FIG. 2)

  However, the above voltage detector has the following problems to be improved. In other words, this voltage detector is configured to be able to detect this live state by setting the state in which an AC voltage equal to or higher than a predetermined voltage value is supplied to the test object as a live state. In this case, in this type of voltage detector, current flowing between the object to be inspected and the ground via the inspector holding the voltage detector due to the capacitance between the object to be inspected and the ground. And an AC voltage is detected based on the current value. For this reason, in this voltage detector, even if a DC voltage is supplied to the inspection object, since no current flows between the inspection object and the ground, the DC voltage cannot be detected. Therefore, this voltage detector has a problem that it is not possible to inspect the live state of the inspection object to which the DC voltage is supplied. Further, in this voltage detector, the live state is inspected from the AC voltage detected based on the current value of the AC current flowing between the object to be inspected and the ground via the inspector holding the voltage detector. . For this reason, this electric detector also has the subject that it is difficult to perform the inspection of the live state in the state which does not hold | maintain an electric detector.

  The present invention has been made in view of such a problem to be improved, and mainly provides a voltage detector that can detect an active state of an inspection target to which a DC voltage is supplied in a state where it is not held. Objective.

  In order to achieve the above object, a voltage detector according to claim 1 is a voltage detector for inspecting a live state of an inspection object, and a non-contact detection amount generated when a direct current flows through the inspection object. A first detection unit to be detected, and a current value of the DC current flowing through the inspection object is measured based on the detected amount detected by the first detection unit, and the current value is equal to or greater than a predetermined value. A processing unit that informs the first notification unit that the inspection target is in the first active state as the active state.

  According to a second aspect of the present invention, in the voltage detector of the first aspect, the processing unit displays the measured current value on a display unit.

  According to a third aspect of the present invention, in the voltage detector according to the first or second aspect, the first detection unit is configured as a clamp type capable of clamping the inspection object.

  According to a fourth aspect of the present invention, in the voltage detector according to any one of the first to third aspects, the detected amount generated when an AC voltage is supplied to the inspection target is detected in a non-contact manner. 2 detection units, the processing unit measures the voltage value of the AC voltage supplied to the inspection object based on the detected amount detected by the second detection unit, and the voltage value is When the specified value is equal to or greater than the specified value, the second notification unit is notified that the inspection target is in the second live state as the live state.

    Further, the voltage detector according to claim 5 is the voltage detector according to claim 4, wherein the processing unit notifies the first notification unit that the inspection target is in the first live state. A notification form in which the second notification unit is notified that the inspection target is in the second live state is different from each other.

  The voltage detector according to claim 1 is based on a first detection unit that detects, in a non-contact manner, a detection amount that occurs when a direct current flows through the inspection target, and a detection amount that is detected by the first detection unit. A processing unit that measures the current value of the direct current flowing through the inspection target and that informs the first notification unit that the inspection target is in the first live state when the current value is equal to or greater than a predetermined value. ing. For this reason, according to this voltage detector, unlike the conventional voltage detector in which the live state can be inspected only when the AC voltage Va is supplied, a DC voltage is supplied to the object to be inspected and a DC current is supplied to the object to be inspected. The first live state when the air is flowing can also be reliably inspected. Also, according to this voltage detector, unlike a conventional voltage detector that detects the current flowing due to the capacitance between the object to be inspected and the ground and inspects the live state of the object to be inspected, the user can Even in a state where the voltage detector is not held, the first active state to be inspected can be inspected. For this reason, according to this voltage detector, the voltage detector can be used for various purposes that are difficult with the conventional voltage detector, such as inspecting the first live state of the inspection object while performing other work without holding the voltage detector. Can be used.

  Moreover, according to the voltage detector of claim 2, the processing unit displays the measured current value on the display unit. Therefore, according to this voltage detector, in addition to the voltage detection function for inspecting the first live state, it is possible to know the current value of the direct current flowing through the inspection object, so that convenience can be sufficiently enhanced.

  Moreover, according to the voltage detector of claim 3, by configuring the first detection unit in a clamp type capable of clamping the inspection object, for example, the first live state of the conductor wire spanned between two points can be obtained. When inspecting, it is possible to use in a form in which the work is performed in a state in which the conductor is clamped by the first detector and the voltage detector is suspended from the conductor, so that the convenience can be further enhanced.

  According to a fourth aspect of the present invention, the voltage detector includes a second detection unit that detects, in a non-contact manner, an alternating current as a detected amount that is generated when an AC voltage is supplied to the inspection target. The voltage value of the AC voltage supplied to the inspection object is measured based on the detected amount detected by the detection unit, and the inspection object is in the second live state when the voltage value is equal to or greater than a predetermined value. The second notification unit is notified of the presence. For this reason, according to this voltage detector, even if it is a test object which is difficult to clamp like an outlet and it is difficult to measure the amount to be detected caused by the flow of current, the second detector is only brought close to the test object. Thus, the second live state in which the AC voltage is supplied can be inspected. Therefore, according to this voltage detector, the detection function of the 1st live state using the 1st detection part and the detection function of the 2nd live state using the 2nd detection part are the shape and arrangement | positioning of test object. It can be used properly according to the position.

  Further, according to the power detector of claim 5, the processing unit notifies the fact that the inspection target is in the first active state, and the notification notifies that the inspection target is in the second active state. By making the form different from each other, it is possible to clearly distinguish and grasp whether the inspection object is in the first active state or the second active state.

1 is a front view of a voltage detector 1. FIG. 1 is a configuration diagram showing a configuration of a voltage detector 1. FIG. FIG. 3 is a first explanatory diagram for explaining how to use the voltage detector 1. It is the 2nd explanatory view explaining the usage method of electric detector. It is the 3rd explanatory view explaining the usage method of electric detector.

  Hereinafter, embodiments of the voltage detector will be described with reference to the accompanying drawings.

  First, the configuration of the voltage detector 1 will be described. The voltage detector 1 shown in FIG. 1 includes a first active state (live line state) and a second active state (active state) of an inspection target (for example, the conductive wire 100 shown in FIGS. 2 and 3 and the outlet 200 shown in FIG. 5). Line state) can be inspected without contact. In this case, the first live state refers to a state in which a current (DC current Id or AC current Ia: see FIGS. 2 and 3) that is greater than or equal to a specified value flows in the inspection target, and the second live state is A state in which a voltage (AC voltage Va: see FIG. 5) equal to or higher than a specified value is supplied to the inspection target. In the following description, when the first active state and the second active state are not distinguished, they are also simply referred to as “active state”.

  Moreover, the voltage detector 1 can measure the current value of the current (AC current and DC current) flowing through the test object in a non-contact manner. Specifically, the voltage detector 1 includes a sensor unit 2 and a main body unit 3 as shown in FIGS.

  As shown in FIGS. 1 and 2, the sensor unit 2 includes sensors 11 a and 11 b (hereinafter also referred to as “first sensor 11” when not distinguished) and a second sensor 12.

  Each first sensor 11 corresponds to a first detection unit, and generates magnetism (covered current) generated when a current (DC current Id or AC current Ia) flows through an inspection target (for example, the conductive wire 100 shown in FIGS. An example of the detection amount) is configured to be detected in a non-contact manner. In this case, each 1st sensor 11 is comprised by the clamp type | mold which can clamp the conducting wire 100 as a test object. Specifically, in the voltage detector 1, as shown in FIGS. 1 and 3, the first sensor 11a is configured to be rotatable around a fulcrum P as a rotation center, and the first sensor 11b is not rotated. It is fixed to the case 30 of the part 3. Further, the voltage detector 1 is configured such that the first sensor 11a rotates in response to an operation on the lever 30a disposed in the case 30.

  As shown in FIG. 1, each first sensor 11 covers (accommodates) the magnetic core 21, the magnetic detection element 22, a shield (not shown), and the magnetic core 21, the magnetic detection element 22, and the shield. Each of the covers 23 is provided so as to have a substantially arc shape (substantially arc shape) in plan view.

  In this voltage detector 1, when used, as shown in FIG. 4, the distal end portions and the proximal end portions of the magnetic cores 21 of the first sensors 11 are joined to each other, and the first sensor 11 forms an annular body. Is configured.

  For example, the magnetic detection element 22 includes a Hall element or a fluxgate type magnetic detection element. In this case, in this voltage detector 1, as shown in FIG. 1, depressions 21a provided at the proximal end and the distal end of the magnetic core 21 of one first sensor 11 (for example, the first sensor 11b), respectively. The magnetic detection elements 22 are respectively arranged on 21b. That is, one magnetic detection element 22 is disposed at the proximal end and the distal end of one magnetic core 21 (two in total). In the voltage detector 1, a current (DC current Id or AC current) is supplied to the conductor 100 in a state in which the conductor 100 as an inspection target is surrounded by each first sensor 11 (annular body constituted by each first sensor 11). When Ia) is flowing, the magnetism detecting element 22 detects the magnetism generated in the magnetic core 21 of each first sensor 11 by the current and outputs the detection signal S1.

  In this case, in the voltage detector 1, as an example, two magnetic detection elements 22 are provided only on one of the magnetic cores 21, but only one magnetic detection element 22 is provided on one magnetic core 21. It is also possible to adopt a configuration in which one or a plurality of magnetic detection elements 22 are arranged on the two magnetic cores 21, respectively.

  The second sensor 12 corresponds to a second detection unit, and as shown in FIG. 1, includes a detection electrode 12a housed at the tip of the cover 23 of the first sensor 11b and a detection circuit (not shown). Configured. This 2nd sensor 12 is non-contacting the electric current (an example of the amount to be detected) flowing between the inspection object and the ground when the AC voltage Va is supplied to the inspection object (for example, the outlet 200 shown in FIG. 5). And a detection signal S2 is output.

  As shown in FIGS. 1 and 2, the main body unit 3 includes a display unit 31, an operation unit 32, a processing unit 33, a light emitting unit 34, an audio output unit 35, and a case 30 in which these components are accommodated or arranged. It is configured with. In this case, the light emitting unit 34 and the audio output unit 35 function as both a first notification unit and a second notification unit.

  The display part 31 is comprised, for example with the liquid crystal panel, and is arrange | positioned at the front panel of the case 30, as shown in FIG. The display unit 31 displays a current value Im (measured value) of the current (DC current Id or AC current Ia) according to the control of the processing unit 33. In this case, the display unit 31 is provided with a backlight, and this backlight functions as the light emitting unit 34. That is, in the voltage detector 1, one light emitting unit 34 functions as a first notification unit and a second notification unit, and also functions as a backlight of the display unit 31. The operation unit 32 includes various switches 32a and a dial 32b disposed on the front panel of the case 30, and outputs operation signals according to these operations.

  The processing unit 33 controls each unit constituting the main body unit 3 according to the operation signal output from the operation unit 32. Further, the processing unit 33 measures the current value Im of the direct current Id or the alternating current Ia flowing through the inspection object based on the detection signal S1 output from the first sensor 11, and the measured current value Im is determined in advance. When the value is equal to or greater than the specified value, the light emitting unit 34 is caused to emit light and the sound output unit 35 is made to output a warning sound to notify that the inspection target is in the first live state.

  In addition, the processing unit 33 causes the display unit 31 to display the current value Im measured based on the detection signal S1 output from the first sensor 11.

  Further, the processing unit 33 measures the voltage value of the AC voltage Va supplied to the inspection object based on the detection signal S2 output from the second sensor 12, and the measured voltage value is a predetermined value that is determined in advance. At the time described above, the light emitting unit 34 is caused to emit light and the sound output unit 35 is made to output a warning sound to notify that the inspection target is in the second live state.

  In this case, the processing unit 33 informs that the inspection target is in the first active state (hereinafter also referred to as “first notification form”) and the inspection target is in the second active state. The notification form (hereinafter, also referred to as “second notification form”) for notifying this is made different from each other. Specifically, for example, the processing unit 33 causes the audio output unit 35 to output a high-pitched warning sound as the first notification mode, and causes the audio output unit 35 to output a low-level warning sound as the second notification mode. Further, for example, as the first notification form, the processing unit 33 causes the light emitting unit 34 to flash, and as the second notification form, causes the light emitting unit 34 to continuously emit light (that is, different light emission patterns). .

  Next, the usage of the voltage detector 1 will be described with reference to the drawings.

  For example, when inspecting the live state of the conductor 100 shown in FIG. 3, the power is turned on by operating the power switch 32 a in the operation unit 32 of the main body 3, and then the sensor unit 2 (each first The lead wire 100 is clamped with the sensor 11). Specifically, first, the lever 30a disposed in the case 30 of the main body 3 is pushed. At this time, as shown in the figure, the first sensor 11a rotates around the fulcrum P, and the tip of the first sensor 11a moves away from the tip of the first sensor 11b.

  Next, the lead wire 100 is passed through the gap between the tip portions of the first sensors 11, and then the tip portions of the first sensors 11 are brought into contact with each other by releasing the pushing of the lever 30 a. At this time, as shown in FIG. 4, the distal end portions and the proximal end portions of the magnetic cores 21 of the first sensors 11 are joined to each other, and each first sensor 11 (comprised of each first sensor 11). The conductor 100 is surrounded (clamped) by the annular body.

  Here, when the direct current Id or the alternating current Ia flows through the conducting wire 100, the magnetic detection element 22 detects the magnetism generated in each first sensor 11 (each magnetic core 21 of each first sensor 11) by the current. The detection signal S1 is output. At this time, the processing unit 33 measures the direct current Id flowing through the conducting wire 100 or the current value Im of the alternating current Ia based on the detection signal S1 output from the magnetic detection element 22 (first sensor 11). At the same time, it is determined whether or not the measured current value Im is a specified value or more. At this time, when it is determined that the current value Im is equal to or greater than the specified value, that is, when it is determined that the conducting wire 100 is in the first active state, the processing unit 33 causes the light emitting unit 34 to emit light and the sound output unit 35. Causes a warning sound to be output. In this case, when the processing unit 33 determines that the inspection target is in the first live state, the processing unit 33 causes the audio output unit 35 to output a high-pitched warning sound and causes the light emitting unit 34 to flash. Thereby, it is notified that the conducting wire 100 is in the first live state.

  Further, the processing unit 33 causes the display unit 31 to display the direct current Id or the current value Im of the alternating current Ia measured based on the detection signal S <b> 1 output from the first sensor 11.

  In this case, in the voltage detector 1, even when any of the direct current Id and the alternating current Ia is flowing through the conductor 100, the current is detected by each first sensor 11 (each magnetic core 21 of each first sensor 11). The magnetism detection element 22 detects the magnetism generated in () and outputs a detection signal S1. For this reason, in this voltage detector 1, even when the direct current voltage is supplied to the test object, it is possible to reliably test the live state of the test object.

  Also, in this voltage detector 1, unlike a conventional voltage detector that detects the current flowing due to the capacitance between the object to be inspected and the ground and inspects the live state of the object to be inspected, the user detects it. Even in a state where the electric appliance 1 is not held, it is possible to inspect the live state of the inspection target. For this reason, the electric detector 1 can be used for various uses which are difficult with the conventional electric detector.

  For example, when performing an operation inspection of the breaker in the distribution board or a connection inspection between the conductor 100 and a load (power supply target), the conductor 100 is clamped by the sensor unit 2 of the voltage detector 1 with the breaker turned off, and the state When the inspector leaves the voltage detector 1 and turns on the breaker, when the breaker functions normally and the conductor 100 and the load are correctly connected, the voltage detector 1 activates the conductor 100 in the live state. Is notified (the light emission of the light emitting unit 34 and the output of a warning sound from the sound output unit 35), thereby making it possible to easily perform an operation inspection of the breaker and a connection inspection between the conductor 100 and the load.

  Moreover, in this voltage detector 1, the 1st sensor 11 is comprised by the clamp type | mold which can clamp the conducting wire 100 as a test object. For this reason, for example, when inspecting the live state of the conductive wire 100 spanned between two points, the first sensor 11 clamps the conductive wire 100 and hangs the voltage detector 1 on the conductive wire 100. It is possible to use in such a form.

  Further, the processing unit 33 causes the display unit 31 to display the direct current Id or the current value Im of the alternating current Ia measured based on the detection signal S <b> 1 output from the first sensor 11. That is, in this voltage detector 1, in addition to the voltage detection function for inspecting the live state, it is possible to grasp the current value Im flowing through the inspection object, and thus convenience is sufficiently enhanced.

  Next, for example, when inspecting the live state of the outlet 200 shown in FIG. 5, the tip of the sensor unit 2 (first sensor 11 a) as shown in FIG. Is brought close to the outlet 200.

  Here, when the AC voltage Va is supplied to the outlet 200, the second sensor 12 housed at the tip of the first sensor 11b detects the current flowing between the outlet 200 and the ground and detects the current. The signal S2 is output. At this time, the processing unit 33 measures the voltage value of the AC voltage Va supplied to the outlet 200 based on the detection signal S2 output from the second sensor 12, and the measured voltage value is defined. It is determined whether or not it is greater than or equal to the value. In this case, when it is determined that the voltage value is equal to or higher than the specified value, that is, when it is determined that the outlet 200 is in the second live state, the processing unit 33 causes the light emitting unit 34 to emit light and warns the audio output unit 35. Output sound. In this case, when the processing unit 33 determines that the inspection target is in the second live state, the processing unit 33 outputs a low-pitched warning sound to the audio output unit 35 and continuously emits the light-emitting unit 34 (without blinking). Let Thereby, it is notified that the outlet 200 is in the second live state.

  In this case, the voltage detector 1 includes the second sensor 12 that outputs the detection signal S2 when the AC voltage Va is supplied to the inspection target by being brought close to the inspection target. The second sensor 12 (the tip portion of the first sensor 11b) is brought close to the test object even if it is an object to be measured that is difficult to clamp and it is difficult to measure the detected amount (magnetism) caused by the flow of current. Thus, it is possible to inspect the second live state in which the AC voltage Va is supplied. For this reason, in this voltage detector 1, the detection function of the 1st live state using the 1st sensor 11 and the detection function of the 2nd live state using the 2nd sensor 12 are the shape and arrangement | positioning of test object. It is possible to use properly according to the position.

  As described above, in the voltage detector 1, the first sensor 11 that detects the detected amount (magnetism) generated when the DC current Id is flowing in the inspection target (the conductive wire 100) without contact, and the first sensor 11. The current value Im of the direct current Id flowing through the inspection object is measured based on the detected amount to be detected, and the inspection object is in the first live state when the current value Im is equal to or greater than a predetermined value. And a processing unit 33 that informs the first notification unit (the light emitting unit 34 and the audio output unit 35). For this reason, according to this voltage detector 1, unlike the conventional voltage detector which can test | inspect an active state (2nd active state) only when alternating voltage Va is supplied, direct current voltage is test object. The first live state when the DC current Id is supplied and the DC current Id flows through the inspection target can also be reliably inspected. Further, according to the voltage detector 1, a conventional test for inspecting the live state (second live state) of the test object by detecting the current flowing due to the capacitance between the test object and the ground. Unlike the electric appliance, the first active state to be inspected can be inspected even when the user does not hold the electric detector 1. For this reason, according to this voltage detector 1, it is difficult for a conventional voltage detector to check the first live state of the inspection target while performing other work without holding the voltage detector 1. The voltage detector 1 can be used.

  Further, according to the voltage detector 1, the processing unit 33 causes the display unit 31 to display the measured current value Im. Therefore, according to the voltage detector 1, in addition to the voltage detection function for inspecting the first live state, the current value Im of the direct current Id flowing through the object to be inspected can be known, thereby sufficiently enhancing convenience. Can do.

  Further, according to the voltage detector 1, by configuring the first sensors 11a and 11b in a clamp type capable of clamping an inspection object, for example, the first live state of the conductive wire 100 spanned between two points is set. When inspecting, the first sensor 11 can be used in such a manner that the conductor 100 is clamped and the voltage detector 1 is hung on the conductor 100 so that the convenience is further enhanced. it can.

  Further, the voltage detector 1 includes the second sensor 12 that detects an AC current as a detected amount generated when the AC voltage Va is supplied to the inspection target in a non-contact manner, and the processing unit 33 includes the second sensor. 12, the voltage value of the AC voltage Va supplied to the inspection object is measured based on the detected amount (detection signal S <b> 2 output from the second sensor 12) detected by 12, and the voltage value is defined in advance. At this time, the second notification unit (the light emitting unit 34 and the audio output unit 35) is notified that the inspection target is in the second live state. For this reason, according to this voltage detector 1, even if it is a test object which is difficult to clamp like the outlet 200 and it is difficult to measure the detected amount (magnetism) caused by the flow of current, the second sensor The second live state in which the AC voltage Va is supplied can be inspected simply by bringing 12 close. Therefore, according to this voltage detector 1, the detection function of the 1st live state using the 1st sensor 11 and the detection function of the 2nd live state using the 2nd sensor 12 are the shape of inspection object, or It can be used properly according to the arrangement position.

  Moreover, according to this voltage detector 1, the process part 33 alert | reports that the test object is a 1st active state, and the alerting | reporting form which alert | reports that a test object is a 2nd active state, By making these different from each other, it is possible to clearly distinguish and grasp whether the inspection object is in the first active state or the second active state.

  The configuration of the voltage detector is not limited to the above configuration. For example, the configuration example in which the first sensor 11a is rotatable and the first sensor 11b is fixed without being rotated has been described above, but a configuration in which both the first sensors 11a and 11b are rotatable is adopted. You can also

  Further, instead of the clamp-type first detection unit in which the tip portions of the two first sensors 11 are opened and closed, a non-opening / closing type configured by one annular magnetic core and a magnetic detection element (configured as a clamp type). It is also possible to employ a first detector. Moreover, the 1st detection part comprised only by the magnetic detection element (For example, a Hall element or a fluxgate type magnetic detection element) without providing a magnetic core is employable.

  Further, the example in which the processing unit 33 displays the current value Im of the current (DC current Id or AC current Ia) on the display unit 31 has been described above, but a configuration that does not have a function of displaying the current value Im is adopted. You can also.

  Moreover, although the above description has been given of the example provided with the second sensor 12 that detects the detected amount generated when the AC voltage Va is supplied to the inspection object in a non-contact manner, a configuration without the second sensor 12 is employed. You can also.

  In addition, the example in which both the light emitting unit 34 and the sound output unit 35 function as the first notification unit and the second notification unit has been described above, but only one of the light emitting unit 34 and the sound output unit 35 is used as the first notification unit. A configuration that functions as the second notification unit may also be employed. Moreover, in said example, although the light emission part 34 and the audio | voice output part 35 are functioning as both a 1st alerting | reporting part and a 2nd alerting | reporting part (it serves as a 1st alerting | reporting part and a 2nd alerting | reporting part), 1st A configuration in which the notification unit and the second notification unit are separately provided may be employed.

  In addition, the processing unit 33 is different from the first notification form and the second notification form (for example, the warning sound output from the sound output unit 35 is changed or the light emission pattern of the light emitting unit 34 is changed). However, the structure which makes the 1st alerting | reporting form and the 2nd alerting | reporting form the same form is also employable.

  In addition, the example in which the backlight of the display unit 31 functions as the light emitting unit 34 (the light emitting unit 34 functions as the first notification unit and the second notification unit and also functions as the backlight) has been described above. A configuration in which a dedicated light emitting unit that functions as the second notification unit is provided separately from the backlight (at a position different from the backlight) may be employed.

DESCRIPTION OF SYMBOLS 1 Electric detector 11a, 11b 1st sensor 12 2nd sensor 31 Display part 33 Processing part 34 Light emission part 35 Audio | voice output part 100 Conductor 200 Outlet Ia AC current Id DC current Im Current value S1 Detection signal Va AC voltage

Claims (5)

A voltage detector for inspecting a live state of a test object,
A first detection unit that detects, in a non-contact manner, a detection amount that occurs when a direct current flows through the inspection target, and the flow that flows to the inspection target based on the detection amount detected by the first detection unit. A process of measuring the current value of the direct current and informing the first notification unit that the inspection target is in the first live state as the live state when the current value is equal to or greater than a predetermined value. And a voltage detector.   The voltage detector according to claim 1, wherein the processing unit displays the measured current value on a display unit.   The voltage detector according to claim 1, wherein the first detection unit is configured as a clamp type capable of clamping the inspection target. A second detection unit that detects a detection amount generated when an AC voltage is supplied to the inspection target in a non-contact manner;
The processing unit measures a voltage value of the AC voltage supplied to the inspection object based on the detected amount detected by the second detection unit, and the voltage value is equal to or higher than a predetermined value. The electric detector in any one of Claim 1 to 3 which alert | reports to the 2nd alerting | reporting part that the said test object is the 2nd active state as said active state at the time of.   The processing unit notifies the first notification unit that the inspection target is in the first live state, and notifies the second notification unit that the inspection target is in the second live state. The voltage detector according to claim 4, wherein the notification forms are different from each other.

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