CN217404452U

CN217404452U - Discharge testing device

Info

Publication number: CN217404452U
Application number: CN202220628312.7U
Authority: CN
Inventors: 吴永浩; 朱磊; 陈蕾; 刘辉
Original assignee: Dekai Certification Service Suzhou Co ltd
Current assignee: Dekai Certification Service Suzhou Co ltd
Priority date: 2022-03-22
Filing date: 2022-03-22
Publication date: 2022-09-09
Anticipated expiration: 2032-03-22

Abstract

The utility model discloses a discharge testing arrangement, include: the test network box is provided with a test port for connecting equipment to be tested, and three time relays and a control switch are connected in parallel in the test network box; the three time relays are respectively arranged on a first circuit connected with a zero line, a second circuit connected with a live wire and a third circuit connected with a ground wire; the control switch enables the first circuit, the second circuit and the third circuit to be switched and communicated pairwise under the control of the time relay; the oscilloscope is connected with the test network box and is used for displaying the waveform peak value when the control switch switches over the line connection; one end of the oscillographic probe is connected with the oscilloscope, and the other end of the oscillographic probe is connected with the test network box. The testing device can automatically switch testing positions, intelligently obtains the peak value of the voltage of the capacitor in the product when the product to be tested is disconnected, realizes automatic testing and improves the testing efficiency.

Description

Discharge testing device

Technical Field

The utility model relates to a testing arrangement especially relates to a discharge testing device.

Background

In international standard requirements, reference is made to IES/EN 62368-1:2014Edition 2.0, which states that if a connector to a mains power supply is disconnected, the capacitor voltage inside the product will be made accessible, i.e. the access voltage measured 2 seconds after disconnecting the connector should comply with the corresponding specified value in the standard. The standard requires that the measurement be performed using an instrument with an input impedance of 100 mega ohms in parallel with an input capacitance of 25 picofarads or less, and that the connector be disconnected (the discharge time begins) when the input capacitor is charged to a peak value. The prior art needs manual control and judges whether the output reaches a peak value, the process consumes a large amount of time, and the manual judgment is not accurate enough. The test is carried out by switching between the zero line and the live line, between the zero line and the ground line and between the live line and the ground line, thereby consuming manpower and time to adjust the wiring and wasting time and labor.

Disclosure of Invention

In order to overcome the defect among the prior art, the embodiment of the utility model provides a testing arrangement discharges, but this testing arrangement automatic switch-over test position, when the product disconnection that awaits measuring is acquireed to intelligence, the peak value of the inside capacitor voltage of product realizes automatic test, improves efficiency of software testing.

In order to achieve the purpose, the utility model adopts the technical proposal that: a discharge test apparatus comprising:

the system comprises a test network box, a data processing module and a data processing module, wherein a test port for connecting equipment to be tested is arranged on the test network box; the three time relays are respectively arranged on a first circuit connected with a zero line, a second circuit connected with a live wire and a third circuit connected with a ground wire; the control switch enables the first circuit, the second circuit and the third circuit to be switched and communicated pairwise under the control of the time relay;

the oscilloscope is connected with the test network box and is used for displaying a waveform peak value when the control switch switches over the circuit connection;

and one end of the oscillographic probe is connected with the oscilloscope, and the other end of the oscillographic probe is connected with the test network box.

In the above technical solution, the control switch has a first end located on the first line, a second end located on the second line, and a third end located on the third line, and the control switch enables two of the first end, the second end, and the third end to be sequentially switched and connected according to a preset time interval.

In the above technical solution, the time interval is 10 s.

In the above technical solution, the testing device further includes an ac power supply, and the ac power supply is connected to the testing network box and is configured to provide ac power to the testing network box.

In the above technical scheme, the test network box is provided with a wiring terminal for connecting the oscilloprobe.

In the above technical solution, the test network box is provided with at least two test ports.

In the above technical solution, the test port includes a two-hole socket seat and a three-hole socket seat.

Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages:

1. the utility model discloses in through set up time relay and control switch in the test network box, make control switch over between a plurality of circuits through time relay and connect, promptly, realize between zero line and live wire, between zero line and ground wire, automatic switch-over test position between live wire and the ground wire, the peak value of the inside capacitor voltage of product when different test position disconnection is acquireed to intelligence to whether the biggest peak value of judgement satisfies the voltage standard of touching.

2. The test network box is provided with at least two test ports which comprise two-hole socket positions and three-hole socket positions, and the connection requirements of different products to be tested are met.

In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.

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 view of a discharge testing apparatus according to a first embodiment of the present invention;

fig. 2 is a circuit diagram in the test network box according to the first embodiment of the present invention.

Reference numerals of the above figures: 1. testing the network box; 11. a test port; 12. a first line; 13. a second line; 14. a third line; 15. a time relay; 16. a control switch; 2. an oscilloscope; 3. an oscillometric probe; 4. an AC power supply.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The first embodiment is as follows: referring to fig. 1 to 2, a discharge testing apparatus includes:

the testing system comprises a testing network box 1, wherein a testing port 11 for connecting equipment to be tested is arranged on the testing network box 1, and three time relays 15 and a control switch 16 are connected in parallel in the testing network box 1; the three time relays 15 are respectively arranged on a first line 12 connected with a zero line, a second line 13 connected with a live wire and a third line 14 connected with a ground wire; the control switch 16 switches and communicates the first line 12, the second line 13 and the third line 14 in pairs under the control of the time relay 15;

the oscilloscope 2 is connected with the test network box 1, and the oscilloscope 2 is used for displaying a waveform peak value when the control switch 16 switches line connection;

And one end of the oscillographic probe 3 is connected with the oscilloscope 2, and the other end of the oscillographic probe 3 is connected with the test network box 1.

By arranging the time relay 15 and the control switch 16 in the test network box 1, the control switch 16 is switched and connected among a plurality of lines through the time relay 15, namely, the test positions are automatically switched between a zero line and a live line, between the zero line and a ground line and between the live line and the ground line, and the peak value of the voltage of a capacitor in a product when the connection is disconnected at different test positions is intelligently obtained, so that whether the maximum peak value meets the touching voltage standard or not is judged.

Referring to fig. 1, the control switch 16 has a first terminal located on the first line 12, a second terminal located on the second line 13, and a third terminal located on the third line 14, and the control switch 16 enables two of the first terminal, the second terminal, and the third terminal to be sequentially switched and connected according to a preset time interval.

Preferably, the time interval is 10 s. During testing, the time relay 15 is set to control the control switch 16 to switch connection every 10 s. Specifically, the zero line and the live line can be communicated through the control switch 16, the control switch 16 is switched and connected between the zero line and the ground line after 10 seconds, and the control switch 16 is switched and connected between the live line and the ground line after 10 seconds. In the switching process of the control switch 16, the oscillographic probe 3 acquires the waveform during switching and displays the waveform through the oscilloscope 2. Therefore, the staff can directly read the peak value of each waveform from the oscilloscope 2 to obtain the maximum peak value in a plurality of waveforms of each product and judge whether the maximum peak value meets the touching voltage standard.

Referring to fig. 1, in an alternative embodiment, the test device further includes an ac power supply 4, and the ac power supply 4 is connected to the test network box 1 and is configured to provide ac power to the test network box 1.

And a wiring terminal used for being connected with the oscillography probe 3 is arranged on the test network box 1.

In an optional embodiment, in order to meet the connection requirements of different products to be tested, at least two test ports 11 are provided on the test network box 1. The test port 11 includes a two-jack socket position and a three-jack socket position.

The present invention has been explained by using specific embodiments, and the explanation of the above embodiments is only used to help understand the method and the core idea of the present invention; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the specific implementation and application scope, to sum up, the content of the present specification should not be understood as the limitation of the present invention.

Claims

1. An electrical discharge testing apparatus, comprising:

the test network box is provided with a test port for connecting equipment to be tested, and three time relays and a control switch are connected in parallel in the test network box; the three time relays are respectively arranged on a first circuit connected with a zero line, a second circuit connected with a live wire and a third circuit connected with a ground wire; the control switch enables the first circuit, the second circuit and the third circuit to be switched and communicated pairwise under the control of the time relay;

2. The discharge testing apparatus of claim 1, wherein: the control switch is provided with a first end positioned on the first line, a second end positioned on the second line and a third end positioned on the third line, and the control switch can enable two of the first end, the second end and the third end to be sequentially switched and connected according to a preset time interval.

3. The discharge testing apparatus of claim 2, wherein: the time interval is 10 s.

4. The discharge testing apparatus of claim 1, wherein: the test network box is connected with the test network box and used for providing the test network box with alternating current.

5. The discharge testing apparatus of claim 1, wherein: and the test network box is provided with a wiring terminal used for being connected with the oscillography probe.

6. The discharge testing apparatus of claim 1, wherein: and at least two test ports are arranged on the test network box.

7. The discharge testing apparatus of claim 1, wherein: the test port comprises a two-jack socket position and a three-jack socket position.