CN213302419U - Improved power frequency withstand voltage automatic grounding device - Google Patents
Improved power frequency withstand voltage automatic grounding device Download PDFInfo
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- CN213302419U CN213302419U CN202022203327.2U CN202022203327U CN213302419U CN 213302419 U CN213302419 U CN 213302419U CN 202022203327 U CN202022203327 U CN 202022203327U CN 213302419 U CN213302419 U CN 213302419U
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Abstract
The utility model provides a withstand voltage automatic earthing device of modified power frequency, including power module, transformer, electricity connect in the protection module of transformer, the electricity connect in the control module of protection module signal end and the earthing switch who connects in control module, control module is used for opening and close earthing switch, and the electricity is connected with and is equipped with the electricity module, protection module is used for protecting power module.
Description
Technical Field
The utility model relates to an electrical equipment's technical field, especially a withstand voltage automatic grounding device of modified power frequency.
Background
The existing power frequency voltage-withstand test device is voltage-withstand test equipment with advanced performance, which is designed according to the latest national power industry standard and is used for performing insulation strength tests on various electrical products, electrical elements, insulating materials and the like under specified voltage so as to check the insulation level of the products, find the insulation defects of a tested product and measure the overvoltage capability.
Because some charges can be stored to the electric capacity type equipment test among the power frequency test process, if the residual charge does not put away can cause the injury to the user, the withstand voltage ground connection of power frequency generally relies on the handheld earth bar of manual work to carry out the operation of discharging, and there is the potential safety hazard in the operation process, the scheduling problem that discharges incompletely. The impulse voltage induced from the space when the insulation of the tested object is broken down by the existing automatic grounding device often damages the electric elements connected with the grounding device and even causes the injury of personnel.
In view of the above, the present inventors have specially designed an improved power frequency withstand voltage automatic grounding device, and have developed this.
SUMMERY OF THE UTILITY MODEL
In order to solve the above problem, the technical scheme of the utility model is as follows:
the utility model provides an automatic earthing device of withstand voltage of modified power frequency, includes power module, transformer, electricity connect in the protection module of transformer, connect in the control module of protection module signal end and connect in the earthing switch of control module in the electricity, control module is used for opening and close earthing switch, and the electricity is connected with and is equipped with the electricity module, protection module is used for protecting power module.
Preferably, the control unit comprises a first switch K13, a second switch K5 and a PLC controller in communication connection with the first switch K13, a power supply end of the PLC controller is electrically connected with the standby power module, a signal end of the second switch K3 is electrically connected with a pneumatic valve K5, and a signal end of the pneumatic valve K5 is in communication connection with the grounding switch.
Preferably, the second switch K3 is a relay.
Preferably, the PLC controller is FX3U-128 MR.
Preferably, the power supply module comprises a first power supply and a filter electrically connected to the first power supply, the other end of the filter is electrically connected to a fuse FU5, and the other end of the fuse FU5 is electrically connected to the PLC controller.
Preferably, the protection module includes fuse FU3 and fuse FU4 electrically connected to the power supply module.
Preferably, the protection module further comprises a protection unit circuit board electrically connected to the power module.
Preferably, the power module is electrically connected with a display module.
The utility model isolates the control power supply from the power supply through the transformer, and then protects the power supply through the protection module; when the experiment begins, through control module with earthing switch open, end up the experiment to staff's security in the improvement experiment.
Drawings
The accompanying drawings, which are described herein, serve to provide a further understanding of the invention and constitute a part of this specification, and the exemplary embodiments and descriptions thereof are provided for explaining the invention without unduly limiting it.
Wherein:
fig. 1 is an overall circuit schematic diagram of the present invention;
fig. 2 is a schematic circuit diagram of the standby power module of the present invention;
fig. 3 is a schematic circuit diagram of the control module of the present invention.
Description of reference numerals:
1. a power supply module; 2. a transformer; 3. a protection module; 4. a control module; 5. a display module; 6. and a grounding switch.
Detailed Description
In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention clearer and more obvious, the following description of the present invention with reference to the accompanying drawings and embodiments is provided for further details. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
Fig. 1 to 3 show an improved power frequency withstand voltage automatic grounding device according to a preferred embodiment of the present invention.
The utility model provides an automatic earthing device of withstand voltage of modified power frequency, includes power module 1, transformer 2, protection module 3, control module 4, display module 5 and earthing switch 6, wherein: the power supply output end of the power supply module 1 is electrically connected with the input loop of the transformer 2, the output loop of the transformer 2 is electrically connected with the signal input ends of the display module 5 and the protection module 3 respectively, the signal output end of the protection module 3 is electrically connected with the control module 4, and the signal output end of the control module 4 is electrically connected with the grounding switch 6.
The protection module 3 includes a fuse FU3 and a fuse FU4 electrically connected to the power supply module 1; and a protection unit circuit board electrically connected to the power module 1. The double protection is provided to further improve the safety of the power supply in use, and the fuse FU3 and the fuse FU4 are provided to melt the fuse body by the heat generated by the fuse body when the current exceeds a specified value, so as to break the circuit.
The power end of the PLC is electrically connected with the standby power module, the signal end of the second switch K3 is electrically connected with an air-operated valve K5, and the signal end of the air-operated valve K5 is in communication connection with the grounding switch 6.
The power input end of the display module 6 is electrically connected with the power module 1 and is used for displaying whether the power module 1 is in a power supply state.
To sum up, the utility model discloses an implement the principle: in order to ensure the safe power isolation at the power supply side, the voltage-withstanding control power supply is isolated from the power supply by an isolation transformer 2 and then is doubly protected by a protection circuit board 1 and a fuse FU3FU 4. When a test is started, a closing button is clicked, the PLC outputs and controls K13 to suck, a high-voltage contactor K3 is sucked under the condition that a door interlock K4 is ensured to be closed, the K3 is electrified, meanwhile, an auxiliary normally open point is sucked, a pneumatic valve K5 is electrified, a grounding device is inflated to open a grounding switch 6 until the test is finished, or a person mistakenly opens the door to cause the power failure of a closing control loop of a voltage regulator, the K5 is immediately electrified, and the gas valve is not supplied with gas and returns to the grounding state under the stretching of a spring.
The present invention has been described above with reference to the accompanying drawings, and it is obvious that the present invention is not limited by the above-mentioned manner, and various insubstantial improvements can be made without modification to the method and technical solution of the present invention, or the present invention can be directly applied to other occasions without modification, all within the scope of the present invention.
Claims (8)
1. The utility model provides a withstand voltage automatic earthing device of modified power frequency which characterized in that: the protection device comprises a power module (1), a transformer (2), a protection module (3) electrically connected to the transformer (2), a control module (4) electrically connected to a signal end of the protection module (3) and a grounding switch (6) electrically connected to the control module (4), wherein the control module (4) is used for opening and closing the grounding switch (6) and is electrically connected with a standby power module, and the protection module (3) is used for protecting the power module (1).
2. The improved power frequency voltage-withstanding automatic grounding device as claimed in claim 1, wherein the control module (4) comprises a first switch K13, a second switch K5 and a PLC controller communicatively connected to the first switch K13, a power end of the PLC controller is electrically connected to the standby power module, a signal end of the second switch K3 is electrically connected to a pneumatic valve K5, and a signal end of the pneumatic valve K5 is communicatively connected to the grounding switch (6).
3. The improved power frequency voltage-withstand automatic grounding device according to claim 2, wherein the second switch K3 is a relay.
4. The improved power frequency withstand voltage automatic grounding device according to claim 2, wherein the PLC controller is FX3U-128 MR.
5. The improved power frequency withstand voltage automatic grounding device according to claim 2, wherein the standby power module comprises a first power supply and a filter electrically connected to the first power supply, the other end of the filter is electrically connected to a fuse FU5, and the other end of the fuse FU5 is electrically connected to the PLC controller.
6. The improved power frequency withstand voltage automatic grounding device according to claim 1, wherein the protection module (3) comprises a fuse FU3 and a fuse FU4 electrically connected to the power supply module (1).
7. The improved power frequency voltage-withstand automatic grounding device according to claim 6, wherein the protection module (3) further comprises a protection unit circuit board electrically connected to the power module (1).
8. The improved power frequency withstand voltage automatic grounding device is characterized in that the power module (1) is electrically connected with a display module (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022203327.2U CN213302419U (en) | 2020-09-30 | 2020-09-30 | Improved power frequency withstand voltage automatic grounding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022203327.2U CN213302419U (en) | 2020-09-30 | 2020-09-30 | Improved power frequency withstand voltage automatic grounding device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213302419U true CN213302419U (en) | 2021-05-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022203327.2U Active CN213302419U (en) | 2020-09-30 | 2020-09-30 | Improved power frequency withstand voltage automatic grounding device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213302419U (en) |
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2020
- 2020-09-30 CN CN202022203327.2U patent/CN213302419U/en active Active
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