CN220019813U - Rigid time-sharing testing equipment for tested electrical equipment - Google Patents
Rigid time-sharing testing equipment for tested electrical equipment Download PDFInfo
- Publication number
- CN220019813U CN220019813U CN202321705281.1U CN202321705281U CN220019813U CN 220019813 U CN220019813 U CN 220019813U CN 202321705281 U CN202321705281 U CN 202321705281U CN 220019813 U CN220019813 U CN 220019813U
- Authority
- CN
- China
- Prior art keywords
- terminal
- isolation module
- potentiometer
- time
- power supply
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000012360 testing method Methods 0.000 title claims abstract description 82
- 238000005259 measurement Methods 0.000 claims abstract description 14
- 238000002955 isolation Methods 0.000 claims description 50
- 230000000630 rising effect Effects 0.000 abstract description 6
- 230000001105 regulatory effect Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical group [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000005693 optoelectronics Effects 0.000 description 1
Landscapes
- Testing Electric Properties And Detecting Electric Faults (AREA)
Abstract
The utility model relates to the technical field of power systems, and discloses a time-of-day testing device for tested electrical equipment. The potentiometer in the test body is regulated to enable the signal output end to generate a rising edge or falling edge voltage signal with proper amplitude, so that the measurement is convenient to obtain the moment just after division.
Description
Technical Field
The utility model relates to the technical field of power systems, in particular to a time-of-day testing device for tested electrical equipment.
Background
Short-circuit faults are unavoidable in operation of the power system. When a fault occurs, the short-circuit current flowing in the system is much larger than the normal load current. This requires that the switching devices in the system be able to safely and reliably turn on and off the fault current. The breaking ability of the electrical equipment is proved by test and examination of various standards and specifications.
Integrating the content of many standards and specifications, it is not difficult to find that even though the short-circuit breaking items are different, the measurement of the arcing time is a more common and critical requirement. Arcing time is the time interval from the moment the switching device just divides to the moment the current is successfully turned off. In the current large-capacity test, the external sensor is installed to acquire the tested electrical equipment at the moment of time commonly used and accurate. In many cases, the sensor is installed in a proper installation position and the installation process is complicated. When a situation is encountered in which it is not necessary to confirm the arcing time with high accuracy, it is not economical and practical to install the sensor. In order to obtain the moment of the test equipment more conveniently, it is a feasible way to directly utilize certain characteristics of the test equipment from the factory with elements without installing a sensor.
Disclosure of Invention
In order to overcome the defects in the prior art, the utility model aims to provide a time-of-day testing device for tested electrical equipment, so as to solve the technical problem that the time-of-day testing device cannot be effectively obtained for the tested electrical equipment without a proper sensor installation position in the prior art.
The utility model is realized by the following technical scheme:
the device comprises a test body, wherein the input end of the test body is connected with a power supply unit, the control end of the test body is connected with the tested electrical device, and the output end of the test body is connected with a measurement system; the test body is internally provided with a power supply module, a power supply isolation module, a potentiometer and a signal isolation module; the input end of the power supply module is connected with the power supply unit, the output end of the power supply module is connected with the input end of the power supply isolation module, the output end of the power supply isolation module is connected with the input end of the potentiometer, and the control end of the potentiometer is connected with the tested electrical equipment; the output end of the potentiometer is connected with the input end of the signal isolation module, and the output end of the signal isolation module is connected to the measurement system.
Preferably, the input end of the power module is provided with a first terminal and a second terminal, and the outgoing lines of the first terminal and the second terminal are connected with the power unit.
Preferably, the potentiometer is provided with a stator pin and a rotor pin, the output end of the power isolation module is respectively connected to the input end of the stator pin, the output end of the stator pin is connected to the input end of the signal isolation module, the input end of the rotor pin is the control end of the potentiometer, and the control end is connected to the tested electrical equipment; the output end of the movable plate pin is connected to the input end of the signal isolation module.
Further, the control end of the potentiometer is respectively provided with a third terminal and a fourth terminal, and the input ends of the third terminal and the fourth terminal are respectively connected to the two ends of a normally open or normally closed contact of the auxiliary switch of the tested equipment; the output end of the third terminal is connected to the input end of the signal isolation module through a movable plate pin; the output end of the fourth terminal is connected with the output end of the stator pin and is connected to the input end of the signal isolation module.
Further, the number of the stator pins is two, wherein the two stator pins are distributed on two sides of the potentiometer.
Further, a knob is arranged on the potentiometer, and the control end of the knob is respectively connected to the movable plate pin and the fixed plate pin.
Preferably, the signal output of the signal isolation module is provided with a fifth terminal and a sixth terminal, which are connected to the measurement system.
Preferably, the test body is further provided with a grounding terminal, and the grounding terminal is grounded.
Preferably, the power isolation module employs a wide-amplitude input DC/DC converter.
Preferably, the signal isolation module employs a wide-amplitude input DC/DC converter or an opto-electronic isolation device.
Compared with the prior art, the utility model has the following beneficial technical effects:
the utility model provides a time-of-day testing device for tested electrical equipment, which is characterized in that a testing body is connected with the tested electrical equipment, a potentiometer is arranged in the testing body, a control signal end of the testing body is connected with a normally open or normally closed contact of an auxiliary switch of the tested electrical equipment, the change of the position state of the auxiliary switch is transmitted into the testing body through a signal receiving end, and the signal output end in the testing body is output into a measuring system through the adjustment of the potentiometer, so that the time-of-day of the tested electrical equipment can be effectively and quickly measured, a sensor is not required to be connected to the device, and the change of the position of the auxiliary switch can be converted into the change of a voltage signal through the device. The potentiometer in the test body is regulated to enable the signal output end to generate a rising edge or falling edge voltage signal with proper amplitude, so that the measurement is convenient to obtain the moment just after division.
Further, a first terminal and a second terminal are arranged at the input end of the power supply module, and the first terminal and the second terminal are power supply ports of the power supply module; the terminal lead wire is connected with an alternating current power supply or a corresponding interface of a charger special for the rechargeable battery, and can provide power for the test body.
Further, the resistor between the stator pin (left side) and the movable plate pin of the potentiometer, the resistor between the electric plate pin and the resistor between the stator pin (right side) form a series voltage division loop, and the voltages on the resistor between the stator pin (left side) and the movable plate pin are connected to the input end of the signal isolation module through the output ends of the stator pin and the movable plate pin. The amplitude of the voltage at the rising edge or the falling edge of the output can be changed by adjusting the knob of the potentiometer so as to adapt to different input requirements of a measuring system.
Drawings
FIG. 1 is a schematic diagram of external connection of a testing device at the moment of time in the present utility model;
FIG. 2 is a schematic diagram of the structure of the testing device at the moment of time in the present utility model;
FIG. 3 is a schematic diagram of signal measurement in the present utility model;
FIG. 4 is a flow chart of the testing process of the testing device at the moment of time.
In the figure: 1-testing a body; 2-a power module; 3-a power isolation module; 4-potentiometer; a 5-signal isolation module; 6-a stator pin; 7-a knob; 8-a movable plate pin; 9-a first terminal; 10-a second terminal; 11-a third terminal; 12-fourth terminals; 13-a fifth terminal; 14-sixth terminals; 15-ground terminal.
Detailed Description
In order that those skilled in the art will better understand the present utility model, a technical solution in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present utility model without making any inventive effort, shall fall within the scope of the present utility model.
It should be noted that the terms "first," "second," and the like in the description and the claims of the present utility model and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the utility model described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
The utility model is described in further detail below with reference to the attached drawing figures:
the utility model aims to provide a time-of-day testing device for tested electrical equipment, which aims to solve the technical problem that the time-of-day testing device cannot be effectively obtained for the tested electrical equipment without a proper sensor installation position in the prior art.
Specifically, a specific structure of the time-of-day testing device for the tested electrical device is shown as 2, and the time-of-day testing device comprises a testing body 1, wherein the input end of the testing body 1 is connected with a power supply unit, the control end is connected with the tested electrical device, and the output end is connected with a measuring system, as shown in fig. 1; the test body 1 is internally provided with a power supply module 2, a power supply isolation module 3, a potentiometer 4 and a signal isolation module 5; the input end of the power supply module 2 is connected with a power supply unit, the output end of the power supply module 2 is connected with the input end of the power supply isolation module 3, the output end of the power supply isolation module 3 is connected with the input end of the potentiometer 4, and the control end of the potentiometer 4 is connected with tested electrical equipment; the output end of the potentiometer 4 is connected with the input end of the signal isolation module 5, and the output end of the signal isolation module 5 is connected to the measurement system.
Specifically, the input end of the power module 2 is provided with a first terminal 9 and a second terminal 10, and the outgoing lines of the first terminal 9 and the second terminal 10 are connected with a power supply unit.
Specifically, a stator pin 6 and a rotor pin 8 are arranged on the potentiometer 4, the output ends of the power isolation module 3 are respectively connected to the input ends of the stator pin 6, the output ends of the stator pin 6 are connected to the input ends of the signal isolation module 5, the input ends of the rotor pin 8 are control ends of the potentiometer 4, and the control ends are connected to tested electrical equipment; the output end of the movable plate pin 8 is connected to the input end of the signal isolation module 5.
The control end of the potentiometer 4 is respectively provided with a third terminal 11 and a fourth terminal 12, and the input ends of the third terminal 11 and the fourth terminal 12 are respectively connected to the two ends of a spare passive normally-open or normally-closed contact of an auxiliary switch of the tested equipment; the output end of the third terminal 11 is connected to the input end of the signal isolation module 5 through the movable piece pin 8; the output of the fourth terminal 12 is connected to the output of the stator pin 6 and to the input of the signal isolation module 5.
The number of the stator pins 6 is two, and the two positioning pins 6 are distributed on two sides of the potentiometer 4.
The potentiometer 4 is provided with a knob 7, and the control end of the knob 7 is respectively connected to the movable plate pin 8 and the fixed plate pin 6.
Specifically, the signal output of the signal isolation module 5 is provided with a fifth terminal 13 and a sixth terminal 14, said fifth terminal 13 and sixth terminal 14 being connected to the measurement system.
Specifically, the test body 1 is further provided with a grounding terminal 15, and the grounding terminal 15 is grounded.
The utility model provides a time-of-day testing device for tested electrical devices, as shown in fig. 4, when in use:
firstly, confirming whether a power module 2 of a test body 1 needs to be charged or whether a grounding terminal 15 of an external power supply is grounded, and then connecting input ends of a third terminal 11 and a fourth terminal 12 to two ends of a normally open contact or a normally closed contact of an auxiliary switch of tested equipment respectively; connecting the fifth terminal 13 and the sixth terminal 14 to a measurement system while connecting the fracture signal to the same measurement system; and operating the tested electrical equipment to switch off, comparing the two paths of signals obtained by the measuring system, and determining the time delay to obtain the moment just switched off.
The utility model is based on the on-off action characteristic of a normally open or normally closed contact (the normally open or normally closed contact is taken from an auxiliary switch which is taken from the factory of the tested equipment) in the brake-off action process of the tested electrical equipment and the fixed (or small-change) time delay of the tested equipment at the moment of time. When the tested equipment is disconnected, the auxiliary switch follows the main switch switching position state of the tested equipment (the normally-open contact point is changed into normally-closed or normally-closed is changed into the normally-open contact point). The change of the position state of the auxiliary switch is transmitted to the device through the signal receiving end of the test body 1. At the same time, the signal output end of the test body 1 will generate a rising edge or falling edge voltage signal. The signal output end is externally connected with a measuring system. The voltage signal is simultaneously input into a main switch fracture signal of the tested equipment of the measuring system with other devices to be compared, so that the time delay between the two signals is obtained, namely the moment of just-divided of the tested equipment under the condition of high voltage can be determined by adding and subtracting the time delay of the voltage signal output by the device, as shown in fig. 3, the fracture signal curve of the tested equipment represents the main switch on-off state of the tested equipment, and the moment of signal change is the moment of just-divided of the main switch.
Sensor signal: the time of day is determined using a sensor. When the tested equipment is disconnected, the sensor output signal is driven to change mechanically or in other modes.
Auxiliary switch position change signal: the test equipment is adopted to determine the moment just after division. When the tested equipment is disconnected, the auxiliary switch follows the main switch of the tested equipment to switch the position state. The position change can be converted into voltage signal output through the test body. There is a time delay between the moment of change in the voltage signal output and the fracture signal of the tested device. The right moment of time can be determined by the voltage signal and the time delay.
The fifth terminal 13 and the sixth terminal 14 are signal output terminals (output rising edge or falling edge voltage signals): the terminal leads are connected to respective measurement systems or oscilloscopes. The third terminal 11 and the fourth terminal 12 are signal input terminals: the terminal outgoing line is connected to the two ends of the idle passive normally open or normally closed contact of the auxiliary switch of the tested equipment. The first terminal 9 and the second terminal 10 are power supply ports of the power supply module: the terminal outgoing line is connected with an alternating current power supply or a corresponding interface of a charger special for the rechargeable battery. The grounding terminal 15 is the grounding end of the test body 1, and the whole test body 1 is sealed and grounded through the terminal, so that the high-voltage electric field interference is shielded to a certain extent, and the grounding protection effect is achieved. The knob 7 is used for adjusting the resistance between the movable pin 8 and the fixed pin 6 of the potentiometer 4.
The power module 2 in the utility model is composed of a switch power supply or a rechargeable battery, singly or in combination, and provides power for the device.
The power isolation module 3 adopts a wide-amplitude input DC/DC converter, which can provide insulation isolation protection with certain strength for the power module and provide power for the potentiometer.
The signal isolation module 5 can adopt wide-amplitude input DC/DC or photoelectric isolation, can provide insulation isolation protection with certain strength for a later-stage measuring device, and outputs rising edge or falling edge voltage signals.
The potentiometer 4 is adjustable by a knob 7.
In summary, the utility model provides a time-of-day testing device for an electrical device under test, which connects a testing body with the electrical device under test, sets a potentiometer in the testing body, connects a control signal end of the testing body with a normally open or normally closed contact of an auxiliary switch of the electrical device under test, transmits the change of the position state of the auxiliary switch into the testing body through a signal receiving end, and outputs the signal output end in the testing body to a measuring system through the adjustment of the potentiometer.
Finally, it should be noted that: the above embodiments are only for illustrating the technical aspects of the present utility model and not for limiting the same, and although the present utility model has been described in detail with reference to the above embodiments, it should be understood by those of ordinary skill in the art that: modifications and equivalents may be made to the specific embodiments of the utility model without departing from the spirit and scope of the utility model, which is intended to be covered by the claims.
Claims (10)
1. The time-of-day testing equipment for the tested electrical equipment is characterized by comprising a testing body (1), wherein the input end of the testing body (1) is connected with a power supply unit, the control end of the testing body is connected with the tested electrical equipment, and the output end of the testing body is connected with a measuring system; the test body (1) is internally provided with a power supply module (2), a power supply isolation module (3), a potentiometer (4) and a signal isolation module (5); the input end of the power supply module (2) is connected with the power supply unit, the output end of the power supply module (2) is connected with the input end of the power supply isolation module (3), the output end of the power supply isolation module (3) is connected with the input end of the potentiometer (4), and the control end of the potentiometer (4) is connected with the tested electrical equipment; the output end of the potentiometer (4) is connected with the input end of the signal isolation module (5), and the output end of the signal isolation module (5) is connected to the measurement system.
2. The time-of-day testing apparatus for electrical devices under test according to claim 1, characterized in that a first terminal (9) and a second terminal (10) are provided at the input of the power module (2), the outgoing lines of the first terminal (9) and the second terminal (10) being connected to a power supply unit.
3. The time-of-day testing device for electrical equipment under test according to claim 1, wherein a stator pin (6) and a rotor pin (8) are arranged on the potentiometer (4), the output ends of the power isolation module (3) are respectively connected to the input ends of the stator pin (6), the output ends of the stator pin (6) are connected to the input ends of the signal isolation module (5), the input ends of the rotor pin (8) are control ends of the potentiometer (4), and the control ends are connected to the electrical equipment under test; the output end of the movable plate pin (8) is connected to the input end of the signal isolation module (5).
4. A time-of-day testing apparatus for electrical devices under test according to claim 3, characterized in that the control end of the potentiometer (4) is provided with a third terminal (11) and a fourth terminal (12), respectively, the input ends of the third terminal (11) and the fourth terminal (12) being connected to the two ends of the normally open or normally closed contact of the auxiliary switch of the device under test, respectively; the output end of the third terminal (11) is connected to the input end of the signal isolation module (5) through the movable sheet pin (8); the output end of the fourth terminal (12) is connected with the output end of the stator pin (6) and is connected to the input end of the signal isolation module (5).
5. A time-of-day testing apparatus for electrical devices under test according to claim 3, characterized in that the number of stator pins (6) is two, wherein two stator pins (6) are distributed on both sides of the potentiometer (4).
6. A time-of-day testing apparatus for electrical devices under test according to claim 3, characterized in that the potentiometer (4) is provided with a knob (7), the control end of the knob (7) being connected to the moving plate pin (8) and the stator pin (6), respectively.
7. A time-of-day testing apparatus for electrical apparatuses under test according to claim 1, characterized in that the signal output of the signal isolation module (5) is provided with a fifth terminal (13) and a sixth terminal (14), the fifth terminal (13) and the sixth terminal (14) being connected to a measurement system.
8. The time-of-day testing apparatus for electrical devices under test according to claim 1, wherein the testing body (1) is further provided with a ground terminal (15), and the ground terminal (15) is grounded.
9. A time-of-day testing apparatus for electrical devices under test according to claim 1, characterized in that the power isolation module (3) employs a wide-amplitude input DC/DC converter.
10. A time-of-day testing apparatus for electrical devices under test according to claim 1, characterized in that the signal isolation module (5) employs a broad-width input DC/DC converter or a photo-electric isolation apparatus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321705281.1U CN220019813U (en) | 2023-06-30 | 2023-06-30 | Rigid time-sharing testing equipment for tested electrical equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321705281.1U CN220019813U (en) | 2023-06-30 | 2023-06-30 | Rigid time-sharing testing equipment for tested electrical equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220019813U true CN220019813U (en) | 2023-11-14 |
Family
ID=88684830
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321705281.1U Active CN220019813U (en) | 2023-06-30 | 2023-06-30 | Rigid time-sharing testing equipment for tested electrical equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220019813U (en) |
-
2023
- 2023-06-30 CN CN202321705281.1U patent/CN220019813U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103176142B (en) | A kind of photovoltaic electric station grid connection adaptive testing method | |
| CN110673054B (en) | DC/DC power supply test system and aging test method of DC/DC power supply | |
| CN108226645A (en) | A kind of vacuum circuit breaker divide-shut brake coil direct current resistance m easurem ent device | |
| CN101614798B (en) | Polarity detection system of electronic transformer | |
| CN105067998A (en) | Voltage and current fluctuation detector | |
| CN210129032U (en) | Device for on-line monitoring fault of current transformer | |
| CN103033700B (en) | Detecting device of responding wave form of dynamic reactive power compensation equipment and detecting method of the same | |
| CA1277706C (en) | Automatic short circuit tester control device | |
| CN220019813U (en) | Rigid time-sharing testing equipment for tested electrical equipment | |
| CN113391145A (en) | Test system of distribution automation feeder terminal | |
| CN212008763U (en) | Detection device for charging module of direct-current charger | |
| CN112230166A (en) | Module harness on-off test device and method and module offline test system | |
| TWM635967U (en) | Energy storage device detection system | |
| CN215116498U (en) | Double-insertion type pressing plate voltage sampling system | |
| CN111751715B (en) | Be applied to primary loop detection device of circuit breaker | |
| CN213181806U (en) | Electrical property testing arrangement and car low pressure test system | |
| CN211577308U (en) | Detection system of external signal generation device | |
| CN110470339B (en) | Portable cable integrated detection device and application method thereof | |
| SK39394A3 (en) | Method and device for testing an electrical drive unit | |
| CN201464596U (en) | Electronic transducer polarity detecting system | |
| CN2616912Y (en) | Cable full-distance insulation-against-ground resistance measuring device | |
| CN219142984U (en) | No-load stability test device for 10kV high-voltage cabinet | |
| CN219164299U (en) | Intelligent high-voltage distribution switch with electricity larceny prevention type high-voltage metering function | |
| CN217639459U (en) | Insulation detection device for direct-current power supply | |
| CN109901063B (en) | Method for measuring power failure time characteristic of GIS single circuit breaker |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |