CN212255556U - High-voltage motor alternating-current voltage withstand test device - Google Patents
High-voltage motor alternating-current voltage withstand test device Download PDFInfo
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- CN212255556U CN212255556U CN201921434535.4U CN201921434535U CN212255556U CN 212255556 U CN212255556 U CN 212255556U CN 201921434535 U CN201921434535 U CN 201921434535U CN 212255556 U CN212255556 U CN 212255556U
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Abstract
The utility model relates to a high voltage motor exchanges withstand voltage testing arrangement, include the casing, be located the circuit board of casing, be equipped with the input side of being connected with the power on the circuit board, the output side and the low-voltage control side of being connected with the high voltage motor that awaits measuring, input side and output side pass through the transformer coupling, the input side is equipped with the voltage regulator, the control side includes singlechip, control circuit and induction circuit. Through set up the voltage regulator at the input side, adjust test voltage through the voltage regulator to make the device be applicable to the motor test of multiple voltage. Because the test main circuit is controlled by the low-voltage control circuit, high-voltage and low-voltage isolation is effectively realized, so that the test device is safer, and the service life of the test device is effectively prolonged.
Description
Technical Field
The utility model belongs to the technical field of testing arrangement technique and specifically relates to a high voltage motor exchanges withstand voltage testing arrangement.
Background
The AC withstand voltage test belongs to a destructive test, and is a test for applying corresponding test voltage to electrical equipment. If no special description is provided, the AC withstand voltage test generally adopts power frequency withstand voltage, and the principle is that a power frequency power supply and a boosting device are utilized to generate power frequency high voltage to carry out withstand voltage test on a tested product. Besides the power frequency withstand voltage, the frequency conversion withstand voltage and the induction withstand voltage also belong to alternating current withstand voltage. The principle of induction withstand voltage is to utilize the electromagnetic induction of the equipment to generate high voltage to carry out withstand voltage test on the equipment. The basic principle of frequency conversion and voltage withstand is that adjustable (30-300Hz) series resonance test equipment is adopted to generate alternating current test voltage by resonance with a tested article capacitor.
However, for different products, different testing devices need to be adopted for different products due to different voltages, and meanwhile, because the control circuit and the testing circuit are communicated with each other inside the testing device, when a product fails, high voltage easily impacts a low-voltage control part, so that the testing device is damaged.
SUMMERY OF THE UTILITY MODEL
The invention provides an alternating current withstand voltage testing device for a high-voltage motor, which can effectively test withstand voltages of different voltage products, can effectively prevent high voltage from impacting a control part and prolongs the service life of the testing device.
The utility model provides a high voltage motor exchanges withstand voltage testing arrangement, includes the casing, is located the circuit board of casing, be equipped with the input side of being connected with the power on the circuit board, the output side and the low pressure control side of being connected with the high voltage motor that awaits measuring, input side and output side pass through the transformer coupling, the input side is equipped with the voltage regulator, the control side includes singlechip, control circuit and induction circuit.
Further, the voltage regulator comprises an input end, an output end and a voltage regulating end, wherein the input end and the output end are respectively connected with the power supply through a switch, and the voltage regulating end is connected with the transformer.
Furthermore, the output side is connected with a product to be tested, the low-voltage control side comprises an induction circuit coupled with the output side, and the induction circuit is electrically connected with the single chip microcomputer and transmits a current signal to the single chip microcomputer.
Further, the output side is provided with a ball gap protection element connected with the product to be tested in parallel.
Furthermore, the control circuit is connected with the output end of the single chip microcomputer, and the single chip microcomputer controls the on-off of the input side switch through signals.
Furthermore, an ammeter connected with the product to be detected in series is arranged on the output side.
Adopt the technical scheme of the utility model, following technological effect has:
1. through set up the voltage regulator at the input side, adjust test voltage through the voltage regulator to make the device be applicable to the motor test of multiple voltage. Because the test main circuit is controlled by the low-voltage control circuit, high-voltage and low-voltage isolation is effectively realized, so that the test device is safer, and the service life of the test device is effectively prolonged.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of the first embodiment.
Fig. 2 is a circuit diagram according to the first embodiment.
The device comprises a shell 1, a detection port 11, a display screen 12, a selection switch 13, a power switch 14, an input side 2, a voltage regulator T1, an input end T11, an output end T12, a voltage regulation end T13, an output side 3, a protection element 32, a transformer 4, a knob 5, an ammeter 7, a low-voltage control side 8, a single chip microcomputer 81, a control circuit 82, an induction circuit 83 and an S2 switch control inductor S2-2.
Detailed Description
The first embodiment is as follows:
the utility model provides a high voltage motor exchanges withstand voltage testing arrangement, includes casing 1, is located the circuit board of casing, be equipped with input side 2 connected with the power on the circuit board, with output side 3 and the low pressure control side 8 that awaits measuring high voltage motor and be connected, casing 1 surface is equipped with detection port 11, the 11 output that corresponds output side 3 of detection port, and detection line one end is inserted in detection port 11, and the other end is connected with the product that awaits measuring, and input side 2 and output side 3 pass through the coupling of transformer 4, and the input side is equipped with voltage regulator T1, the control side includes singlechip 81, control circuit 82 and induction circuit 83.
The voltage regulator T1 comprises an input end T11, an output end T12 and a voltage regulating end T13, the input end T11 and the output end T12 are connected with a power supply through a switch S2 and a switch S1 respectively, the power supply switch 14 can control the on-off of the switch S1, therefore, test voltage is provided for the test device, the voltage regulating end T13 is connected with the transformer 4, the output voltage of the voltage regulator can be regulated through the knob 5 of the operation panel, and therefore the voltage applied to a product to be tested is changed. Output side 3 connects the product that awaits measuring, and the sensing circuit 83 and the output side coupling of low pressure control side 8, sensing circuit 83 are connected with singlechip 81 electricity and with current signal transmission to singlechip. The output side is provided with a ball gap protection element 32 connected in parallel with the product to be tested. The control circuit 82 is connected with the output end of the single chip microcomputer 81, and the single chip microcomputer controls the on-off of the input side switch S2 through signals. The output side is provided with an ammeter 7 which is connected with the product to be measured in series.
When the test is carried out, the input side 2 is connected with a power supply, the output side 3 is respectively connected with the input part and the insulation part of the alternating current motor, the test range is selected through the selection switch 13, then the switch 14 is opened, so that the voltage is applied to the motor to be tested, and the voltage applied to the motor to be tested is adjusted to be in a proper range. The induction circuit induces the magnitude of leakage current so as to judge whether the insulation withstand voltage of the alternating current motor is normal, when the leakage current exceeds a standard value, the input side switch S2 is automatically cut off, power supply is cut off, and therefore potential safety hazards are prevented, and an operator is informed of abnormal withstand voltage through alarm information. For safety, when the voltage resistance is abnormal, the single chip microcomputer enables the S2 to be in a normally open locking state through the control circuit, so that the S2 cannot be closed, the locking needs to be released, and the detection device can work.
The current voltage value of the input side and the current value of the output side are arranged on the operation panel 12, and the singlechip is combined with numerical value display, so that double insurance is realized.
Through set up the voltage regulator at the input side, adjust test voltage through the voltage regulator to make the device be applicable to the motor test of multiple voltage. Because the test main circuit is controlled by the low-voltage control circuit, high-voltage and low-voltage isolation is effectively realized, so that the test device is safer, and the service life of the test device is effectively prolonged.
In addition to the preferred embodiments described above, other embodiments of the present invention are also possible, and those skilled in the art can make various changes and modifications according to the present invention without departing from the spirit of the present invention, which should fall within the scope of the present invention defined by the appended claims.
Claims (6)
1. The utility model provides a high voltage motor exchanges withstand voltage testing arrangement which characterized in that, includes the casing, is located the circuit board of casing, be equipped with the input side of being connected with the power on the circuit board, with the output side and the low voltage control side that await measuring high voltage motor is connected, input side and output side pass through the transformer coupling, the input side is equipped with the voltage regulator, the control side includes singlechip, control circuit and induction circuit.
2. The ac withstand voltage testing device of the high voltage motor according to claim 1, wherein the voltage regulator comprises an input terminal, an output terminal and a voltage regulating terminal, the input terminal and the output terminal are respectively connected to the power supply through a switch, and the voltage regulating terminal is connected to the transformer.
3. The ac withstand voltage testing device of the high voltage motor according to claim 1, wherein the output side is connected to a product to be tested, the low voltage control side comprises an induction circuit coupled to the output side, and the induction circuit is electrically connected to the single chip microcomputer and transmits a current signal to the single chip microcomputer.
4. The apparatus of claim 3, wherein the output side is provided with a ball gap protection element connected in parallel with the product to be tested.
5. The alternating current withstand voltage testing device for the high-voltage motor as claimed in claim 3, wherein the control circuit is connected with an output end of a single chip microcomputer, and the single chip microcomputer controls on and off of a switch on an input side through signals.
6. The apparatus of claim 5, wherein the output side is provided with an ammeter connected in series with a product to be tested.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921434535.4U CN212255556U (en) | 2019-09-03 | 2019-09-03 | High-voltage motor alternating-current voltage withstand test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921434535.4U CN212255556U (en) | 2019-09-03 | 2019-09-03 | High-voltage motor alternating-current voltage withstand test device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212255556U true CN212255556U (en) | 2020-12-29 |
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ID=73971923
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921434535.4U Expired - Fee Related CN212255556U (en) | 2019-09-03 | 2019-09-03 | High-voltage motor alternating-current voltage withstand test device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212255556U (en) |
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2019
- 2019-09-03 CN CN201921434535.4U patent/CN212255556U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201229 Termination date: 20210903 |
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| CF01 | Termination of patent right due to non-payment of annual fee |