Coil instantaneous working condition detection device of relay contactor

Abstract

The utility model relates to a coil instantaneous working condition detection device of a relay contactor, which comprises a shell, a test power supply, a current acquisition device and a voltage acquisition device, the device is characterized in that a test power supply is connected with two terminals of a test interface through a cable which is connected with a start button and a current acquisition device in series, and two ends of a voltage acquisition device are connected with the two terminals of the test interface; and two terminals of the test interface are connected to two ends of a coil of the relay or the contactor through connecting cables. According to the coil instantaneous working condition detection device provided by the utility model, current and voltage data of the relay or contactor coil at the power-on moment can be detected only by pressing down the start button when the power-on instantaneous working condition of the relay or contactor coil is detected; and the performance of the tested component is evaluated according to current and voltage changes at the moment when the coil is powered on.

Description

Technical Field

[0001] The utility model relates to a coil instantaneous working condition detection device, and more specifically, to a coil instantaneous working condition detection device for a relay contactor. Background Art

[0002] In modern electronic devices, voltage and current detection of relays, contactors and other devices at the moment of power-on is a key technology. The voltage and current changes of these devices at the moment of power-on can directly affect the stability and reliability of the equipment. Therefore, accurate voltage and current detection of these devices is essential to ensure the normal operation of the equipment; in addition, voltage and current measurement technology is also one of the important technologies in electronic equipment, which can help us understand the operating status of the equipment and find and solve problems in time.

[0003] Existing detection methods for relays and contactors often require repeated construction of test platforms, resulting in low test efficiency. This not only increases the cost of the equipment but also increases the uncertainty of the test, which is not conducive to the maintenance and use of the equipment. Summary of the invention

[0004] In order to overcome the disadvantages of the above technical problems, the utility model provides a coil instantaneous working condition detection device for a relay contactor.

[0005] The utility model discloses a relay contactor coil instantaneous working condition detection device, comprising a shell and a test power supply, a current acquisition device and a voltage acquisition device arranged in the shell, wherein a start button and a test interface are arranged on the shell, and the test interface has two wiring terminals; the tested component is a relay or a contactor; the utility model is characterized in that: the test power supply is connected to the two wiring terminals of the test interface via a cable with a start button and a current acquisition device in series, and the two ends of the voltage acquisition device are connected to the two wiring terminals of the test interface; the two wiring terminals of the test interface are connected to the two ends of the coil of the relay or the coil of the contactor via a connecting cable.

[0006] The utility model discloses a coil instantaneous working condition detection device for a relay contactor, wherein a DC power supply interface and an AC power supply interface are arranged on the test power supply, a voltage switching switch is arranged on the shell, the voltage switching switch is connected in series on a cable between the test power supply and a start button, and the voltage switching switch is selectively connected to the DC power supply interface and the AC power supply interface of the test power supply.

[0007] The utility model discloses a coil instantaneous working condition detection device for a relay contactor, wherein a voltage regulating knob for regulating the output voltage of a test power supply is arranged on the housing, and the voltage regulating knob is connected in series to a cable between the test power supply and a start button.

[0008] The utility model discloses a coil instantaneous working condition detection device for a relay contactor, wherein a signal display device for displaying and storing a current signal collected by a current collection device and a voltage signal collected by a voltage collection device is arranged on the shell, and a signal input end of the signal display device is connected to a signal output end of the current collection device and a signal output end of the voltage collection device.

[0009] The beneficial effects of the utility model are as follows: the instantaneous working condition detection device of the coil of the relay contactor of the utility model is provided with a test power supply, a current acquisition device and a voltage acquisition device in a shell, a start button and a test interface are provided on the shell, the test interface is connected to the coil of the relay or contactor to be tested via a connecting cable, and the test power supply is connected to the test interface via a cable that is serially connected to the start button and the current acquisition device. In this way, when detecting the working condition of the relay or contactor coil at the moment of power-on, only the start button needs to be pressed to detect the current and voltage data of the relay or contactor coil at the moment of power-on, so that the test frequency can be conveniently and quickly mastered artificially, and the performance of the components under test can be evaluated according to the current and voltage changes at the moment of power-on of the coil.

[0010] Furthermore, the test power supply in the utility model can selectively provide direct current and alternating current, and the power supply type is selected according to the actual needs of the components under test, thereby meeting the power supply needs of relay contactors with different power supply modes.

[0011] Furthermore, the utility model is provided with a voltage adjustment button for adjusting the output voltage of the test power supply, which can provide a required test voltage according to the actual control requirements of the coil of the relay or contactor, and has wider adaptability.

[0012] Furthermore, the utility model is provided with a signal display device, which uses the signal display device to store and display the current and voltage change signals of the tested components at the moment of power-on, so that the test personnel can preliminarily judge whether the tested components meet the requirements based on the current and voltage waveforms. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural principle diagram of the coil instantaneous working condition detection device of the relay contactor of the utility model;

[0014] Figure 2 The utility model is a circuit schematic diagram of a coil instantaneous working condition detection device of a relay contactor.

[0015] In the figure: 1 housing, 2 test power supply, 3 current acquisition device, 4 voltage acquisition device, 5 start button, 6 test interface, 7 tested components, 8 connecting cables, 9 voltage switching switch, 10 voltage adjustment knob, 11 signal display device. DETAILED DESCRIPTION

[0016] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0017] like Figure 1 and Figure 2 As shown, the structural principle diagram and circuit principle diagram of the relay contactor coil transient working condition detection device of the utility model are respectively given. The relay contactor coil transient working condition detection device shown is composed of a housing 1, a test power supply 2, a current acquisition device 3, a voltage acquisition device 4 and a start button 5. The housing 1 is provided with a test interface 6, and the test interface 6 has two terminals. The housing 1 plays a fixing and supporting role. The test power supply 2, the current acquisition device 3 and the voltage acquisition device 4 shown are all arranged in the housing 1. The test power supply 2, the current acquisition device 3 and the voltage acquisition device 4 are all commercially available finished products.

[0018] One end of the test power supply 2 is connected to one terminal of the test interface 6 via a cable, and the other end of the test power supply 2 is connected to another terminal of the test interface 6 via a cable connected in series with the start button 5. The two terminals of the test interface 6 are connected to the two ends of the coil of the component under test 7 (i.e., a relay or contactor) via a connecting cable 8. In this way, when the start button 5 is pressed, the test power supply can supply power to the coil of the relay or contactor through the test interface 6.

[0019] The current acquisition device 3 is connected in series to the cable between the start button 5 and the test interface 6, and is used to measure the current signal of the coil of the tested component 7 at the moment of power-on. The two ends of the voltage acquisition device 4 are connected to the two terminals of the test interface 6, and are used to measure the voltage signal of the coil of the tested component 7 at the moment of power-on. In this way, during the test, by pressing the start button 5, the test power supply 2 supplies power to the coil of the relay or contactor, and the current signal and voltage signal of the coil at the moment of power-on are captured by the current acquisition device 3 and the voltage acquisition device 4. According to the changes in the current and voltage signals detected at the moment of power-on, it is evaluated whether the performance of the tested relay or contactor meets the requirements.

[0020] Since the commonly used relay or contactor coil control voltages have specifications such as DC 5V, DC 12V, DC 24V, and AC 220V, in order to adapt to the different requirements of the tested components 7 for voltage type and size, the test power supply 2 adopts a power supply with DC and AC output functions, that is, the test power supply 2 has a DC power supply interface and an AC power supply interface, and a voltage switching switch 9 and a voltage adjustment knob 10 are provided on the housing 1.

[0021] The voltage switching switch 9 is connected in series to the cable between the test power supply 2 and the start button 5, and the voltage switching switch 9 is selectively connected to the DC power supply interface and the AC power supply interface of the test power supply 2, so that by toggling the voltage switching switch 9 to different positions, DC power or AC power can be selectively output. The voltage adjustment knob 10 is connected in series to the cable between the test power supply 2 and the start button 5 to adjust the output voltage of the test power supply 2.

[0022] The housing 1 is also provided with a signal display device 11 for displaying and storing the current signal collected by the current acquisition device 3 and the voltage signal collected by the voltage acquisition device 4. The signal input end of the signal display device 11 is connected to the signal output ends of the current acquisition device and the voltage acquisition device.

Claims

1. A relay contactor coil transient operating condition detection device, comprising a housing (1) and a test power supply (2), a current acquisition device (3) and a voltage acquisition device (4) arranged in the housing, the housing being provided with a start button (5) and a test interface (6), the test interface having two wiring terminals; the component to be tested (7) being a relay or a contactor; characterized in that: The test power supply is connected to the two terminals of the test interface via a cable with a start button and a current acquisition device in series, and the two ends of the voltage acquisition device are connected to the two terminals of the test interface; the two terminals of the test interface are connected to the two ends of the control coil of the relay or the control coil of the contactor via a connecting cable (8).

2. The relay contactor coil instantaneous operating condition detection device according to claim 1, characterized in that: The test power supply (2) is provided with a DC power supply interface and an AC power supply interface, and the housing (1) is provided with a voltage switching switch (9), which is connected in series to a cable between the test power supply and the start button (5), and the voltage switching switch is selectively connected to the DC power supply interface and the AC power supply interface of the test power supply.

3. The relay contactor coil instantaneous operating condition detection device according to claim 1 or 2, characterized in that: The housing (1) is provided with a voltage adjustment knob (10) for adjusting the output voltage of the test power supply (2), and the voltage adjustment knob is connected in series to a cable between the test power supply and the start button (5).

4. The relay contactor coil instantaneous operating condition detection device according to claim 1 or 2, characterized in that: The housing (1) is provided with a signal display device (11) for displaying and storing the current signal collected by the current collection device (3) and the voltage signal collected by the voltage collection device (4); the signal input end of the signal display device is connected to the signal output ends of the current collection device and the voltage collection device.

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