CN111983395A - Electrical high-voltage test ground wire on-off detection device - Google Patents
Electrical high-voltage test ground wire on-off detection device Download PDFInfo
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- 238000012360 testing method Methods 0.000 title claims abstract description 45
- 238000012806 monitoring device Methods 0.000 claims abstract description 53
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/1227—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials
- G01R31/1263—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation
- G01R31/1272—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation of cable, line or wire insulation, e.g. using partial discharge measurements
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
- G01R1/0408—Test fixtures or contact fields; Connectors or connecting adaptors; Test clips; Test sockets
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/52—Testing for short-circuits, leakage current or ground faults
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Abstract
The invention relates to an on-off detection device for an electrical high-voltage test ground wire, which comprises a detection device and a monitoring device, wherein the detection device comprises a detection circuit, a detection circuit and a detection circuit; the detection device comprises a first clamping device, a second clamping device which is rotatably connected with the first clamping device and is insulated, and a switch device arranged on the second clamping device; the first end of the monitoring device is connected with the first clamping device, the second end of the monitoring device is connected with the switching device, and the third end of the monitoring device is grounded and the second clamping device is grounded; when the first clamping device and the second clamping device are clamped on the high-voltage wire, if the first clamping device and the second clamping device are stably clamped on the high-voltage wire and the grounding wire is conducted, the monitoring device outputs a first indicating signal; if the first clamping device and the second clamping device are in poor contact with the high-voltage wire and/or the grounding wire, the monitoring device outputs a second indicating signal. The invention can accurately monitor the on-off of the ground wire in the high-voltage test, and informs workers through the indicating signal, thereby effectively avoiding safety accidents.
Description
Technical Field
The invention relates to the technical field of electricity, in particular to an on-off detection device for an electric high-voltage test ground wire.
Background
In the field of electric power such as electric power systems and power plants, high-voltage electrical tests (1KV or more) of equipment are widely performed. Once the worker carelessly contacts the high-voltage electricity, casualties are easily caused. Therefore, during the operation process, the ground wire is required to be hung on the equipment firstly, and the worker can contact the high-voltage equipment to operate. If the grounding is not firm or poor in contact or the grounding point has a problem, the operator considers that the grounding is invalid, and the electric shock is easily caused to the operator.
Disclosure of Invention
The technical problem to be solved by the invention is to provide an on-off detection device for an electrical high-voltage test ground wire, aiming at the defects in the prior art.
The technical scheme adopted by the invention for solving the technical problems is as follows: construct an electric high-voltage test ground wire break-make detection device, include: a detection device and a monitoring device;
the detection device includes: the device comprises a first clamping device, a second clamping device which is rotatably connected with the first clamping device and is insulated, and a switch device arranged on the second clamping device;
the first end of the monitoring device is connected with the first clamping device, the second end of the monitoring device is connected with the switching device, and the third end of the monitoring device is grounded and the second clamping device is grounded;
when the first clamping device and the second clamping device are clamped on a high-voltage wire, if the first clamping device and the second clamping device are stably clamped on the high-voltage wire and a grounding wire is conducted, the monitoring device outputs a first indicating signal; and if the first clamping device and the second clamping device are in poor contact with the high-voltage wire and/or the grounding wire, the monitoring device outputs a second indicating signal.
Preferably, the detection device further comprises: and the insulating rotating shaft is respectively connected with the first clamping device and the second clamping device so that the first clamping device and the second clamping device can be rotatably connected and insulated.
Preferably, the first clamping device comprises: a grounding clip; the second clamping device includes: a test clip;
the ground clip includes: a first clamping part and a first connecting part;
the test clip includes: a second clamping portion and a second connecting portion;
the first connecting part is connected with a first end of the monitoring device, the second connecting part is grounded, and the switching device is arranged on the second clamping part; when the first clamping part of the grounding clamp and the second clamping part of the testing clamp the high-voltage wire, the switch device is closed, and the monitoring device is started.
Preferably, the switching device includes: a micro switch.
Preferably, the monitoring device comprises: the monitoring device comprises a monitoring device body, a power supply device, a current detection circuit, a first indicating circuit and a second indicating circuit, wherein the power supply device, the current detection circuit, the first indicating circuit and the second indicating circuit are arranged on the monitoring device body;
the first end of the power supply device is connected with the first end of the switch device, the second end of the switch device is connected with the first end of the current detection circuit, and the second end of the current detection circuit is connected with the second end of the power supply device;
the first end of the first indicating circuit is connected with the first end of the current detecting circuit, and the second end of the first indicating circuit is connected with the second end of the current detecting circuit;
the first end of the second indicating circuit is connected with the first end of the current detecting circuit, and the second end of the second indicating circuit is connected with the second end of the current detecting circuit;
when the first clamping device and the second clamping device are stably clamped on the high-voltage wire and the grounding wire is conducted, the switch device is closed, the current detection circuit works, and the first indicating circuit is conducted and outputs the first indicating signal;
the first clamping device and the second clamping device are in poor contact with the high-voltage wire and/or the grounding wire, the current detection circuit does not work, and the second indicating circuit is conducted and outputs the second indicating signal.
Preferably, the current detection circuit includes: a current limiting circuit and a current detection relay;
the current detection relay includes: a current detection unit;
the first end of the current limiting circuit is used as the first end of the current detection circuit to be connected with the second end of the switch device, the second end of the current limiting circuit is connected with the second clamping device, the first end of the current detection part is connected with the first clamping device, and the second end of the current detection part is used as the second end of the current detection circuit to be connected with the second end of the power supply device.
Preferably, the current detection relay includes: a first switch; the first indication circuit includes: a first indicator light;
a first end of the first switch is connected with a first end of the current-limiting current, a second end of the first switch is connected with a first end of the first indicator light, and a second end of the first indicator light is connected with a second end of the current detection part;
when the first clamping device and the second clamping device are stably clamped on the high-voltage wire and the grounding wire is conducted, the switch device is closed, the current detection portion controls the first switch to be closed, and the first indicator lamp generates the first indicator signal.
Preferably, the current detection relay includes: a second switch; the second indicating circuit includes: a second indicator light;
a first end of the second switch is connected with a first end of the current-limiting current, a second end of the second switch is connected with a first end of the second indicator light, and a second end of the second indicator light is connected with a second end of the current detection part;
when the first clamping device and the second clamping device are in poor contact with the high-voltage wire and/or the grounding wire, the switch device is closed, the current detection part controls the second switch to be closed, and the second indicator lamp generates the second indicator signal.
Preferably, the second indicating circuit further comprises: an alarm;
the alarm is connected with the second indicator light in parallel;
when the first clamping device and the second clamping device are in poor contact with the high-voltage wire and/or the grounding wire, the switch device is closed, the current detection part controls the second switch to be closed, and the alarm works and outputs an alarm signal.
Preferably, the current limiting circuit includes: a current limiting resistor;
the first end of the current limiting resistor is the first end of the current limiting circuit, and the second end of the current limiting resistor is the second end of the current limiting circuit.
The device for detecting the on-off state of the ground wire in the electrical high-voltage test has the following beneficial effects: the device comprises a detection device and a monitoring device; the detection device comprises a first clamping device, a second clamping device which is rotatably connected with the first clamping device and is insulated, and a switch device arranged on the second clamping device; the first end of the monitoring device is connected with the first clamping device, the second end of the monitoring device is connected with the switching device, and the third end of the monitoring device is grounded and the second clamping device is grounded; when the first clamping device and the second clamping device are clamped on the high-voltage wire, if the first clamping device and the second clamping device are stably clamped on the high-voltage wire and the grounding wire is conducted, the monitoring device outputs a first indicating signal; if the first clamping device and the second clamping device are in poor contact with the high-voltage wire and/or the grounding wire, the monitoring device outputs a second indicating signal. The invention can accurately monitor the on-off of the ground wire in the high-voltage test, and informs workers through the indicating signal, thereby effectively avoiding safety accidents.
Drawings
The invention will be further described with reference to the accompanying drawings and examples, in which:
fig. 1 is a schematic structural diagram of an electrical high-voltage test ground wire on-off detection device provided by an embodiment of the invention;
FIG. 2 is a schematic front view of a detecting device according to an embodiment of the present invention;
FIG. 3 is a schematic side view of a detecting device according to an embodiment of the present invention;
fig. 4 is a schematic circuit diagram of the ground wire on-off detection device for the electrical high-voltage test according to the embodiment of the invention.
Detailed Description
For a more clear understanding of the technical features, objects and effects of the present invention, embodiments of the present invention will now be described in detail with reference to the accompanying drawings.
The invention provides an on-off detection device for an electrical high-voltage test ground wire, which aims to solve the problems of insecure grounding, poor contact, a problem of a grounding point, unstable contact between a clamp and a high-voltage wire and the like of the existing ground wire.
Specifically, referring to fig. 1, fig. 1 is a schematic structural diagram of an alternative embodiment of each embodiment provided in the present invention.
As shown in fig. 1, the electrical high-voltage test ground wire on-off detection device may include: a detection device and a monitoring device 200.
Specifically, the detection device includes: the clamping device comprises a first clamping device 101, a second clamping device 102 which is rotatably connected with the first clamping device 101 and is insulated, and a switch device 103 which is arranged on the second clamping device 102. The first end of the monitoring device 200 is connected to the first holding device 101, the second end of the monitoring device 200 is connected to the switching device 103, and the third end of the monitoring device 200 is grounded and the second holding device 102 is grounded. Further, when the first clamping device 101 and the second clamping device 102 are clamped on the high-voltage electric wire, if the first clamping device 101 and the second clamping device 102 are stably clamped on the high-voltage electric wire and the ground wire is conducted, the monitoring device 200 outputs a first indication signal; if the first clamping device 101 and the second clamping device 102 have poor contact with the high-voltage wire and/or the ground wire, the monitoring device 200 outputs a second indication signal. The first indication signal is an indication signal when the first clamping device 101 and the second clamping device 102 are stably clamped on the high voltage wire, the contact point is good, and the ground wire is reliably grounded (i.e., the ground wire is conducted). The second indication signal is an indication signal when any one of the weak ground line, the poor contact, the problem of the ground point itself, the poor contact between the first clamping device 101 and the second clamping device 102 with the high-voltage wire, and the poor contact of the ground line exists. When the monitoring device 200 outputs the first indication signal, it indicates that the grounding is good and the working environment is safe; when the monitoring device 200 outputs the second indication signal, it indicates that the working environment is unsafe and the work is not possible.
By arranging the detection device, whether the ground wire in the high-voltage test is in good contact can be stably detected, and accurate indication can be provided for operators, so that safety accidents are avoided.
Further, as shown in fig. 2 and 3, in some embodiments, the detection apparatus further includes: and an insulated rotating shaft 104 connected with the first clamping device 101 and the second clamping device 102 respectively so that the first clamping device 101 and the second clamping device 102 can be rotatably connected and insulated. The first clamping device 101 and the second clamping device 102 can be isolated and rotatably connected by the insulating rotating shaft 104. Specifically, the first clamping device 101 and the second clamping device 102 can be simultaneously operated, such as clamping and the like. In addition, through this design, can make this detection device can accurately detect whether the earth connection is good.
In some embodiments, the first clamping device 101 comprises: a grounding clip; the second clamping device 102 includes: and (6) testing the clamp.
Specifically, this ground clip includes: first clamping part and first connecting portion. This test clip includes: a second clamping portion and a second connecting portion.
Wherein, the first connecting part is connected with the first end of the monitoring device 200, the second connecting part is grounded, and the switch device 103 is arranged on the second clamping part; when the first clamping portion of the grounding clip and the second clamping portion of the test clip clamp the high-voltage wire, the switch device 103 is closed, and the monitoring device 200 is started. Specifically, by disposing the switch device 103 in the second clamping portion of the test clip, when the test clip is not in operation, there is nothing in the middle of the test clip, and there is no influence on the switch device 103, and at this time, the switch device 103 is in an open state, and therefore, the circuit in the monitoring device 200 does not operate. When the test clip is clamped on the high voltage wire, the high voltage wire presses the switching device 103, the resulting force closes the switching device 103, and the circuit in the monitoring device 200 starts to operate.
In some embodiments, optionally, the switching device 103 comprises: a micro switch. By arranging the microswitch in the clamping part of the second clamping device 102, as long as something is clamped by the clamping part of the second clamping device 102, force can be applied to the microswitch, and the microswitch can be quickly closed by the acting force, so that the trigger circuit works.
In some embodiments, the monitoring device 200 may include: the monitoring device comprises a monitoring device body, a power supply device 201 arranged on the monitoring device body, a current detection circuit 202, a first indication circuit 204 and a second indication circuit 205.
A first end of the power supply device 201 is connected with a first end of the switch device 103, a second end of the switch device 103 is connected with a first end of the current detection circuit 202, and a second end of the current detection circuit 202 is connected with a second end of the power supply device 201; a first end of the first indicating circuit 204 is connected with a first end of the current detecting circuit 202, and a second end of the first indicating circuit 204 is connected with a second end of the current detecting circuit 202; a first terminal of the second indicator circuit 205 is connected to the first terminal of the current detection circuit 202, and a second terminal of the second indicator circuit 205 is connected to the second terminal of the current detection circuit 202.
When the first clamping device 101 and the second clamping device 102 are stably clamped on the high-voltage electric wire and the ground wire is conducted, the switch device 103 is closed, the current detection circuit 202 works, and the first indication circuit 204 is conducted and outputs a first indication signal. The first clamping device 101 and the second clamping device 102 have poor contact with the high-voltage wire and/or the ground wire, the current detection circuit 202 does not work, and the second indication circuit 205 is turned on and outputs a second indication signal.
In some embodiments, the current detection circuit 202 includes: a current limiting circuit 203 and a current sensing relay.
Wherein, this current detection relay includes: a current detection unit.
Specifically, a first end of the current limiting circuit 203 is connected to a second end of the switching device 103 as a first end of the current detecting circuit 202, a second end of the current limiting circuit 203 is connected to the second clamping device 102, a first end of the current detecting unit is connected to the first clamping device 101, and a second end of the current detecting unit is connected to a second end of the power supply device 201 as a second end of the current detecting circuit 202.
Further, the current detection relay further includes: a first switch; the first indication circuit 204 includes: a first indicator light.
Specifically, a first end of the first switch is connected with a first end of the current-limiting current, a second end of the first switch is connected with a first end of the first indicator light, and a second end of the first indicator light is connected with a second end of the current detection portion.
When the first clamping device 101 and the second clamping device 102 are stably clamped on the high-voltage wire and the ground wire is conducted, the switch device 103 is closed, the current detection part controls the first switch to be closed, and the first indicator lamp generates a first indicator signal. In some embodiments, the first indicator light may be an LED light, wherein the first indicator light may be a green light.
Further, in some embodiments, the current detection relay includes: a second switch; the second indicating circuit 205 includes: and a second indicator light.
Specifically, a first end of the second switch is connected with a first end of the current-limiting current, a second end of the second switch is connected with a first end of the second indicator light, and a second end of the second indicator light is connected with a second end of the current detection portion.
When the first clamping device 101 and the second clamping device 102 are in poor contact with the high-voltage wire and/or the grounding wire, the switch device 103 is closed, the current detection part controls the second switch to be closed, and the second indicator lamp generates a second indicator signal. In some embodiments, the second indicator light may be an LED light, wherein the second indicator light may be a red light.
Further, in some embodiments, the second indication circuit 205 further comprises: an alarm. The alarm is connected with the second indicating lamp in parallel. Optionally, the alarm includes, but is not limited to, an audible alarm such as a buzzer or a horn.
When the first clamping device 101 and the second clamping device 102 are in poor contact with the high-voltage wire and/or the grounding wire, the switch device 103 is closed, the current detection part controls the second switch to be closed, and the alarm works and outputs an alarm signal.
Further, in some embodiments, the current limiting circuit 203 may include: a current limiting resistor. The first end of the current limiting resistor is the first end of the current limiting circuit 203, and the second end of the current limiting resistor is the second end of the current limiting circuit 203. Alternatively, in some embodiments, the current limiting circuit 203 may be implemented by a single resistor or a plurality of resistors connected in series and in parallel, and the present invention is not particularly limited and claimed.
In some embodiments, the power supply 201 may be a battery, wherein the battery may be a rechargeable battery or a non-rechargeable battery, wherein the battery capacity is determined by specific requirements, and the invention is not limited thereto.
Further, as shown in fig. 4, it is an equivalent circuit schematic diagram of the embodiment of the present invention.
Specifically, as shown in fig. 4, the present invention allows two clips (a ground clip and a test clip) to be rotated simultaneously by connecting the two clips via an insulating rotating shaft 104, and in fig. 4, the two clips are equivalent to S0 in fig. 4. Due to the characteristics of the current detection relay, when the current flowing through the current detection relay is less than 0.1A, the current detection relay does not act, at the moment, the first switch is in a normally open state, and the second switch is in a normally closed state; when the current flowing through the current detection relay is larger than 0.1A, the current detection relay acts to control the first switch to be closed and the second switch to be opened. Therefore, based on the principle, when the grounding clamp and the test clamp do not work (do not clamp things), there is nothing in the middle of the test clamp, and the micro switch is not stressed, so that the micro switch is in an open circuit state, the monitoring loop does not work, no current is arranged on the current detection relay, and the current detection relay does not work. When the grounding clip and the test clip are clamped on the high-voltage wire, the grounding clip and the test clip are conducted (namely S0 is closed), and meanwhile, the high-voltage wire presses the micro switch, so that the micro switch is closed due to stress, and the monitoring loop starts to work. Taking the battery voltage of 1.5V and the current limiting resistor of 7 ohms as an example, the detection device and the monitoring device 200 form a loop through a high-voltage wire, and the current detection relay monitors the loop current. If the grounding clip and the testing clip are well clamped on the high-voltage wire and the grounding wire is also well conducted, the resistance of the grounding clip is basically negligible, 0.25A of current is generated, at the moment, the current detection relay acts, the first switch is closed, the second switch is opened, and the first indicator light (green light) is turned on. If the grounding clamp and the test clamp are not clamped on the high-voltage wire or the ground wire is broken, the current is basically equal to 0, the current detection relay does not act, the second switch is in an off state, the first switch is kept in an on state, at the moment, the second indicator light (red light) is turned on, and meanwhile, the buzzer/loudspeaker gives an alarm to remind a worker that the worker is dangerous and cannot operate.
The above embodiments are merely illustrative of the technical ideas and features of the present invention, and are intended to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the scope of the present invention. All equivalent changes and modifications made within the scope of the claims of the present invention should be covered by the claims of the present invention.
Claims (10)
1. The utility model provides an electric high-voltage test ground wire break-make detection device which characterized in that includes: a detection device and a monitoring device;
the detection device includes: the device comprises a first clamping device, a second clamping device which is rotatably connected with the first clamping device and is insulated, and a switch device arranged on the second clamping device;
the first end of the monitoring device is connected with the first clamping device, the second end of the monitoring device is connected with the switching device, and the third end of the monitoring device is grounded and the second clamping device is grounded;
when the first clamping device and the second clamping device are clamped on a high-voltage wire, if the first clamping device and the second clamping device are stably clamped on the high-voltage wire and a grounding wire is conducted, the monitoring device outputs a first indicating signal; and if the first clamping device and the second clamping device are in poor contact with the high-voltage wire and/or the grounding wire, the monitoring device outputs a second indicating signal.
2. The electrical high-voltage test ground wire on-off detection device of claim 1, further comprising: and the insulating rotating shaft is respectively connected with the first clamping device and the second clamping device so that the first clamping device and the second clamping device can be rotatably connected and insulated.
3. An electrical high voltage test ground wire on-off detection device according to claim 1, wherein said first clamping means comprises: a grounding clip; the second clamping device includes: a test clip;
the ground clip includes: a first clamping part and a first connecting part;
the test clip includes: a second clamping portion and a second connecting portion;
the first connecting part is connected with a first end of the monitoring device, the second connecting part is grounded, and the switching device is arranged on the second clamping part; when the first clamping part of the grounding clamp and the second clamping part of the testing clamp the high-voltage wire, the switch device is closed, and the monitoring device is started.
4. An electrical high voltage test ground wire on-off detection device according to claim 1, wherein said switching device comprises: a micro switch.
5. The electrical high-voltage test ground wire on-off detection device of claim 1, wherein the monitoring device comprises: the monitoring device comprises a monitoring device body, a power supply device, a current detection circuit, a first indicating circuit and a second indicating circuit, wherein the power supply device, the current detection circuit, the first indicating circuit and the second indicating circuit are arranged on the monitoring device body;
the first end of the power supply device is connected with the first end of the switch device, the second end of the switch device is connected with the first end of the current detection circuit, and the second end of the current detection circuit is connected with the second end of the power supply device;
the first end of the first indicating circuit is connected with the first end of the current detecting circuit, and the second end of the first indicating circuit is connected with the second end of the current detecting circuit;
the first end of the second indicating circuit is connected with the first end of the current detecting circuit, and the second end of the second indicating circuit is connected with the second end of the current detecting circuit;
when the first clamping device and the second clamping device are stably clamped on the high-voltage wire and the grounding wire is conducted, the switch device is closed, the current detection circuit works, and the first indicating circuit is conducted and outputs the first indicating signal;
the first clamping device and the second clamping device are in poor contact with the high-voltage wire and/or the grounding wire, the current detection circuit does not work, and the second indicating circuit is conducted and outputs the second indicating signal.
6. The electrical high-voltage test ground wire on-off detection device of claim 5, wherein the current detection circuit comprises: a current limiting circuit and a current detection relay;
the current detection relay includes: a current detection unit;
the first end of the current limiting circuit is used as the first end of the current detection circuit to be connected with the second end of the switch device, the second end of the current limiting circuit is connected with the second clamping device, the first end of the current detection part is connected with the first clamping device, and the second end of the current detection part is used as the second end of the current detection circuit to be connected with the second end of the power supply device.
7. The electrical high-voltage test ground wire on-off detection device according to claim 6, wherein the current detection relay includes: a first switch; the first indication circuit includes: a first indicator light;
a first end of the first switch is connected with a first end of the current-limiting current, a second end of the first switch is connected with a first end of the first indicator light, and a second end of the first indicator light is connected with a second end of the current detection part;
when the first clamping device and the second clamping device are stably clamped on the high-voltage wire and the grounding wire is conducted, the switch device is closed, the current detection portion controls the first switch to be closed, and the first indicator lamp generates the first indicator signal.
8. The electrical high-voltage test ground wire on-off detection device according to claim 6, wherein the current detection relay includes: a second switch; the second indicating circuit includes: a second indicator light;
a first end of the second switch is connected with a first end of the current-limiting current, a second end of the second switch is connected with a first end of the second indicator light, and a second end of the second indicator light is connected with a second end of the current detection part;
when the first clamping device and the second clamping device are in poor contact with the high-voltage wire and/or the grounding wire, the switch device is closed, the current detection part controls the second switch to be closed, and the second indicator lamp generates the second indicator signal.
9. The electrical high-voltage test ground wire on-off detection device of claim 8, wherein said second indicator circuit further comprises: an alarm;
the alarm is connected with the second indicator light in parallel;
when the first clamping device and the second clamping device are in poor contact with the high-voltage wire and/or the grounding wire, the switch device is closed, the current detection part controls the second switch to be closed, and the alarm works and outputs an alarm signal.
10. The electrical high-voltage test ground wire on-off detection device of claim 6, wherein the current limiting circuit comprises: a current limiting resistor;
the first end of the current limiting resistor is the first end of the current limiting circuit, and the second end of the current limiting resistor is the second end of the current limiting circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010687280.3A CN111983395A (en) | 2020-07-16 | 2020-07-16 | Electrical high-voltage test ground wire on-off detection device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010687280.3A CN111983395A (en) | 2020-07-16 | 2020-07-16 | Electrical high-voltage test ground wire on-off detection device |
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| CN111983395A true CN111983395A (en) | 2020-11-24 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114336296A (en) * | 2021-12-29 | 2022-04-12 | 国能朔黄铁路发展有限责任公司 | Safety protection equipment and safety protection method |
| CN118311479A (en) * | 2024-06-11 | 2024-07-09 | 国网山东省电力公司日照供电公司 | Intelligent monitoring device for transformer substation grounding wire |
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| CN114336296A (en) * | 2021-12-29 | 2022-04-12 | 国能朔黄铁路发展有限责任公司 | Safety protection equipment and safety protection method |
| CN118311479A (en) * | 2024-06-11 | 2024-07-09 | 国网山东省电力公司日照供电公司 | Intelligent monitoring device for transformer substation grounding wire |
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