CN113406490A - Live voltage withstand test device for direct current coil switch electrical appliance - Google Patents
Live voltage withstand test device for direct current coil switch electrical appliance Download PDFInfo
- Publication number
- CN113406490A CN113406490A CN202110828319.3A CN202110828319A CN113406490A CN 113406490 A CN113406490 A CN 113406490A CN 202110828319 A CN202110828319 A CN 202110828319A CN 113406490 A CN113406490 A CN 113406490A
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- Prior art keywords
- voltage
- direct current
- power supply
- withstand
- rectifier bridge
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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
- G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
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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
Abstract
The invention discloses an electrified withstand voltage testing device of a direct current coil switch electric appliance, which is characterized in that: including DC power supply, protection circuit breaker, contactor, voltage regulator, high-voltage insulation transformer, high-voltage rectifier bridge and withstand voltage source, DC power supply passes through the protection circuit breaker and is connected with the input of contactor for control testing arrangement's power supply, the output of contactor passes through the voltage regulator and is connected with high-voltage insulation transformer's input, and high-voltage rectifier bridge's input is connected to high-voltage insulation transformer's output, and high-voltage rectifier bridge is used for cutting to forward voltage and switches on reverse voltage, and the coil of examination article is connected to high-voltage rectifier bridge's output, and the coil and the contact of examination article are connected to withstand voltage source carry out withstand voltage test to the examination article.
Description
Technical Field
The invention relates to an electrified withstand voltage testing device for a direct current coil switch electrical appliance, and relates to the technical field of low-voltage electrical appliance equipment detection.
Background
The direct current coil switch electric appliance is widely used in the fields of automobiles, industrial power distribution and the like, and is characterized in that a coil is supplied with direct current, and a main contact of the direct current coil switch electric appliance can be connected and disconnected with alternating current or direct current. In practical application, because the compression and overheating can reduce the voltage-resistant grade of a contact to a coil, two terminals of a product need to be subjected to voltage-resistant test on the coil respectively, a voltage-resistant source can break through an insulating layer to damage a direct-current switching power supply for supplying power to the coil when the product fails in the device provided by the electrified voltage-resistant test bench of the CN 212410762U direct-current contactor, and the voltage resistance of the direct-current switching power supply for resisting several kilovolts is not explained. The device that prior patent CN 207301245U high voltage direct current contactor withstand voltage test structure proposed can only be used for direct current withstand voltage test, can not be used for alternating current withstand voltage test.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the existing direct current coil voltage withstand test device can only be used for direct current voltage withstand test and can not be used for alternating current voltage withstand test.
In order to solve the above problems, the technical solution of the present invention is to provide an apparatus for testing an electrified withstand voltage of a dc coil switch electrical appliance, which is characterized in that: including DC power supply, protection circuit breaker, contactor, voltage regulator, high-voltage insulation transformer, high-voltage rectifier bridge and withstand voltage source, DC power supply passes through the protection circuit breaker and is connected with the input of contactor for control testing arrangement's power supply, the output of contactor passes through the voltage regulator and is connected with high-voltage insulation transformer's input, and high-voltage rectifier bridge's input is connected to high-voltage insulation transformer's output, and high-voltage rectifier bridge is used for cutting to forward voltage and switches on reverse voltage, and the coil of examination article is connected to high-voltage rectifier bridge's output, and the coil and the contact of examination article are connected to withstand voltage source carry out withstand voltage test to the examination article.
Preferably, the voltage-resistant source is respectively connected with two ends of the test coil and two ends of the contact through a first switch and a second switch for switching the test loop.
Preferably, the direct-current power supply inlet wire adopts a three-phase inlet wire.
Preferably, the output end of the direct current power supply is directly connected with the voltage of a kilovolt pole.
Preferably, the protection circuit breaker, the contactor, the voltage regulator, the high-voltage insulation transformer and the high-voltage rectifier bridge are arranged in the shell.
Preferably, the direct current power supply is adjustable in voltage, and the adjustment range is 10-500V.
Compared with the prior art, the invention has the beneficial effects that:
the invention is used for AC/DC voltage withstand test, and can carry out voltage withstand test on a test article under the condition of electrifying the coil; the direct-current power supply of the direct-current power supply can realize stepless voltage regulation, can be tested without damaging the direct-current power supply regardless of a wiring method of a voltage-resistant source and the direct-current power supply, and cannot pass voltage-resistant detection and be damaged.
Drawings
Fig. 1 is a schematic block diagram of an electrified withstand voltage testing device of a direct current coil switching apparatus according to the present invention.
Detailed Description
In order to make the invention more comprehensible, preferred embodiments are described in detail below with reference to the accompanying drawings.
As shown in fig. 1, the live voltage withstand test device for a dc coil switching device of the present invention includes a dc power supply 1, a protection circuit breaker 2, a contactor 3, a voltage regulator 4, a high voltage isolation transformer 5, a high voltage rectifier bridge 6, and a voltage withstand source 8. The protective circuit breaker 2, the contactor 3, the voltage regulator 4, the high-voltage insulating transformer 5 and the high-voltage rectifier bridge 6 are arranged in the shell. The direct current power supply 1 inlet wire adopts the three-phase inlet wire to carry out overload and short-circuit protection by the protection circuit breaker 2, and the protection circuit breaker 2 is connected with the contactor 3 through a wire for the power supply of the control device. The contactor 3 is connected with the voltage regulator 4 through a lead and used for regulating voltage output to the high-voltage insulating transformer 5, and the high-voltage insulating transformer 5 is used for isolating secondary side voltage and primary side voltage and preventing overvoltage breakdown from damaging an electric appliance. The high-voltage insulation transformer 5 is connected with a high-voltage rectifier bridge 6 through a high-voltage lead, and the high-voltage rectifier bridge 6 is used for cutting forward voltage and conducting reverse voltage. The output end of the high-voltage rectifier bridge 6 is connected with a coil of the test article 7, and normal working voltage is output to the test article 7 by the anode and the cathode. The voltage-resistant source 8 is used for outputting alternating current/direct current voltage, does not divide positive and negative poles, is connected to the switch I9 and the switch II 10 through high-voltage leads, and the switch I9 and the switch II 10 are respectively connected with two ends of the coil of the test article 7 and two ends of the contact and used for switching a test loop.
The direct current power supply 1 is adjustable in voltage, the direct current voltage can be adjusted to be 10-500V in an electrodeless mode, and the output end of the direct current power supply can be directly connected to the voltage of a kilovolt pole without damaging the direct current power supply 1. The direct-current power supply 1 is connected with a high-voltage insulating transformer 5 and a high-voltage rectifier bridge 6, and the voltage polarity of an input end can be ignored.
During testing, the direct-current power supply 1 and the coil of the test article 7 are connected, the first regulating switch 9 and the second regulating switch 10 select a working loop, the direct-current power supply 1 and the contactor 3 are switched on to output working voltage to the coil of the test article 7, the coil is electrified, and the test article 7 is switched on; when the test article 7 is closed, the voltage-resistant source 8 carries out voltage-resistant test on the coil and the contact of the test article 7 through the high-voltage lead. When the test is successful, the withstand voltage source 8 detects a pass; when the detection fails, the voltage-resistant source 8 directly contacts the positive end and the negative end of the direct-current power supply 1, the voltage-resistant source 8 does not pass the detection, and the direct-current power supply 1 cannot be damaged.
Claims (6)
1. The utility model provides a live withstand voltage testing arrangement of direct current coil switching apparatus which characterized in that: including DC power supply (1), protection circuit breaker (2), contactor (3), voltage regulator (4), high-voltage insulation transformer (5), high-voltage rectifier bridge (6) and withstand voltage source (8), DC power supply (1) is connected with the input of contactor (3) through protection circuit breaker (2) for control testing arrangement's power supply, the output of contactor (3) passes through voltage regulator (4) and is connected with the input of high-voltage insulation transformer (5), and the input of high-voltage rectifier bridge (6) is connected to the output of high-voltage insulation transformer (5), and high-voltage rectifier bridge (6) are used for cutting to forward voltage and switch on reverse voltage, and the coil of sample (7) is connected to the output of high-voltage rectifier bridge (6), and withstand voltage source (8) are connected the coil and the contact of sample (7) and are carried out withstand voltage test to sample (7).
2. The live voltage withstand test device of the direct current coil switching apparatus according to claim 1, characterized in that: and the voltage-resistant source (8) is respectively connected with two ends of the coil of the test article (7) and two ends of the contact through a switch I (9) and a switch II (10) and is used for switching a test loop.
3. The live voltage withstand test device of the direct current coil switching apparatus according to claim 1, characterized in that: the incoming line of the direct current power supply (1) adopts a three-phase incoming line.
4. The live voltage withstand test device of the direct current coil switching apparatus according to claim 1, characterized in that: the output end of the direct current power supply (1) is directly connected with the voltage of a kilovolt pole.
5. The live voltage withstand test device of the direct current coil switching apparatus according to claim 1, characterized in that: the protection circuit breaker (2), the contactor (3), the voltage regulator (4), the high-voltage insulating transformer (5) and the high-voltage rectifier bridge (6) are arranged in the shell.
6. The live voltage withstand test device of the direct current coil switching apparatus according to claim 1, characterized in that: the direct current power supply (1) is adjustable in voltage, and the adjusting range is 10-500V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110828319.3A CN113406490A (en) | 2021-07-22 | 2021-07-22 | Live voltage withstand test device for direct current coil switch electrical appliance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110828319.3A CN113406490A (en) | 2021-07-22 | 2021-07-22 | Live voltage withstand test device for direct current coil switch electrical appliance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113406490A true CN113406490A (en) | 2021-09-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110828319.3A Pending CN113406490A (en) | 2021-07-22 | 2021-07-22 | Live voltage withstand test device for direct current coil switch electrical appliance |
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| CN (1) | CN113406490A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114264947A (en) * | 2021-12-17 | 2022-04-01 | 特变电工西安柔性输配电有限公司 | Bypass switch testing device and testing method for flexible direct current power module |
-
2021
- 2021-07-22 CN CN202110828319.3A patent/CN113406490A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114264947A (en) * | 2021-12-17 | 2022-04-01 | 特变电工西安柔性输配电有限公司 | Bypass switch testing device and testing method for flexible direct current power module |
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