Batch relay coil temperature rise testing device
By designing a batch relay coil temperature rise testing device, and utilizing a switching unit and a main switching switch to achieve rapid switching between power supply and measurement circuits, the slow testing progress and electrical safety issues in existing technologies are solved, realizing efficient and safe batch temperature rise testing.
Patent Information
- Application Number
- CN202520172556.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-24
- Publication Date
- 2026-02-03
- Estimated Expiration
- 2035-01-24
AI Technical Summary
Existing technologies for testing the temperature rise of relay coils are limited by the number of power supplies and ohmmeters, resulting in slow testing progress. Temporary circuit setup is time-consuming and prone to electrical safety issues, and multiple test samples cannot be installed simultaneously in a small temperature chamber.
A batch relay coil temperature rise testing device was designed, which integrates a conversion unit, a power supply terminal, and a measurement terminal. The power supply and measurement circuits can be quickly switched through a main conversion switch. Banana head test leads and copper sheet terminals are used for connection. The circuit breaker is fixed inside the device to avoid short circuits and missed connections.
It improves testing efficiency and safety, reduces the time required to set up temporary circuits, is suitable for batch testing in small incubators, reduces electrical safety risks, and increases work efficiency and the production capacity of environmental incubators.
Smart Images
Figure CN223870807U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of electrical testing technology, and in particular to a batch relay coil temperature rise testing device. Background Technology
[0002] Currently, the testing process for relay coil temperature rise is often slow due to limitations in the number of power supplies and ohmmeters. For individual tests, the inherent cycle is prolonged, and the prolonged occupation of the temperature chamber also affects the progress of other tests. Furthermore, setting up temporary circuits to measure the temperature rise of multiple relay coils each time consumes a significant amount of time in finding components and fixing the circuit. The testing process has the following shortcomings:
[0003] 1. When using existing testing methods, the wiring of the ohmmeter and coil requires a section of copper conductor; some power supplies use rubber wire, while others use ordinary copper wire (usually 1.0~2.5mm²). 2 You will need to find the corresponding adapter accessories;
[0004] 2. This temporary circuit requires the cooperation of a power supply, a changeover switch, a ohmmeter, and multiple circuit breakers to connect to the test object. With a lot of messy and numerous auxiliary materials such as wires, adhesive wires, and circuit breakers, electrical safety problems such as incorrect short circuits and missing connections are prone to occur.
[0005] 3. The circuit occupies a large space, and a single sample mounting rack cannot accommodate both accessories and samples at the same time, making it difficult to place them together in a small incubator for testing. Utility Model Content
[0006] The purpose of this invention is to solve the above-mentioned problems and provide a batch relay coil temperature rise testing device. It is an easy-to-install and easy-to-connect adapter to the relay coil temperature rise testing circuit, which solves the problem of how to quickly and safely build the circuit during the relay temperature rise testing process.
[0007] To achieve the above objectives, this utility model provides the following technical solution: a batch relay coil temperature rise testing device, comprising a housing, the housing being equipped with a conversion unit, a power supply terminal, and a measuring terminal; the conversion unit includes a main conversion switch, which switches the connection between the power supply terminal or the measuring terminal and the output terminal by rotating the knob of the main conversion switch, integrating a power-off mode, a coil energized mode, and a combined working mode of measuring circuit and coil energized mode.
[0008] According to this utility model, the conversion unit further includes a first conversion switch and a second conversion switch; wherein, the NC1 contact of the first conversion switch is connected to the L output line of the circuit breaker, and the NC2 contact is connected to the N output line of the circuit breaker; the NC1 contact of the second conversion switch is connected to one pole of the measuring terminal, and the NC2 contact is connected to the other pole of the measuring terminal.
[0009] According to this utility model, the power supply terminal further includes a power supply banana head test wire socket connected to the circuit breaker input line, which facilitates the connection of the power supply using a banana head test wire.
[0010] According to this utility model, the measuring end further includes a measuring end banana head test wire socket, which is connected to the NC1 and NC2 contacts of the second section changeover switch, so as to facilitate the connection of the measuring circuit using a banana head test wire.
[0011] According to this utility model, the power supply terminal further includes an M3.5 threaded terminal block connected to the power supply terminal of the circuit breaker input line, which facilitates the use of copper wires to connect the power supply.
[0012] According to this utility model, it further includes a copper sheet terminal block connected to the NC1 and NC2 contacts of the second section changeover switch, which facilitates the ohmmeter to directly clamp the copper sheet to test the coil resistance.
[0013] According to this utility model, the incoming terminal of the circuit breaker is connected to the banana head test wire socket and the M3.5 threaded terminal of the power supply terminal to facilitate power input wiring. The outgoing terminal of the circuit breaker is connected to the NC1 and NC2 contacts of the first section of the changeover switch. The circuit breaker can be quickly switched between power on and power off by manual operation.
[0014] According to this utility model, the conversion unit further includes a third conversion switch, a fourth conversion switch, a fifth conversion switch, a sixth conversion switch, and a seventh conversion switch; the C1 and C2 contacts of the third conversion switch, the fourth conversion switch, the fifth conversion switch, the sixth conversion switch, and the seventh conversion switch are respectively connected to the five terminals of K1-K5;
[0015] a. When the knob is in position I, the contacts C1 and C2 of the third-to-seventh changeover switch close with the corresponding NO1 and NO2, connecting to the measurement circuit;
[0016] b. When the knob is in position II, the contacts C1 and C2 of the third, fourth, fifth, sixth, and seventh changeover switches close with the corresponding NC1 and NC2, connecting to the power supply circuit;
[0017] c. When the knob is in position III, the contacts C1 and C2 of the third changeover switch are closed with NO1 and the corresponding NO2, connecting to the measurement circuit. The contacts C1 and C2 of the fourth, fifth, sixth, and seventh changeover switches are closed with the corresponding NC1 and NC2, connecting to the power supply circuit.
[0018] d. When the knob is in position IV, contacts C1 and C2 of the fourth changeover switch are closed with the corresponding NO1 and NO2, connecting to the measurement circuit; contacts C1 and C2 of the third, fifth, sixth, and seventh changeover switches are closed with the corresponding NC1 and NC2, connecting to the power supply circuit.
[0019] e. When the knob is in position V, the contacts C1 and C2 of the fifth changeover switch are closed with the corresponding NO1 and NO2, connecting to the measurement circuit. The contacts C1 and C2 of the third, fourth, sixth, and seventh changeover switches are closed with the corresponding NC1 and NC2, connecting to the power supply circuit.
[0020] f. When the knob is in position VI, contacts C1 and C2 of the sixth section changeover switch are closed with the corresponding NO1 and NO2, connecting to the measurement circuit; contacts C1 and C2 of the third, fourth, fifth, and seventh section changeover switches are closed with the corresponding NC1 and NC2, connecting to the power supply circuit.
[0021] g. When the knob is in position VII, contacts C1 and C2 of the seventh changeover switch close with the corresponding NO1 and NO2, connecting to the measurement circuit. Contacts C1 and C2 of the third, fourth, fifth, and sixth changeover switches close with the corresponding NC1 and NC2, connecting to the power supply circuit.
[0022] According to this utility model, the C1 and C2 contacts of the first section of the changeover switch are further connected to the NC1 and NC2 contacts of the third, fourth, fifth, sixth, and seventh section changeover switches, respectively, so as to facilitate the connection of the power supply and the changeover switches in the third, fourth, fifth, sixth, and seventh section changeover switches that are closed at the NC1 and NC2 positions, thereby supplying power to the corresponding relay coils.
[0023] According to this utility model, further, the C1 and C2 contacts of the second section changeover switch are connected to the NO1 and NO2 contacts of the third, fourth, fifth, sixth, and seventh section changeover switches, respectively, to facilitate the connection of the power supply and the changeover switches of the third, fourth, fifth, sixth, and seventh section changeover switches closed at the NO1 and NO2 positions, thereby measuring the resistance of the corresponding relay coil.
[0024] Compared with the prior art, the beneficial effects of this utility model are:
[0025] 1. No adapters are needed for either the ohmmeter or the power supply circuit: The interface between the ohmmeter and the coil circuit uses banana-head test leads and also has copper plate terminals for quick connection to other circuits and the coil; the interface between the power supply and the coil circuit uses banana-head test leads and also has M3.5 screw holes and a baffle, making it compatible with different voltage sources.
[0026] 2. The markings on the testing device are accurate and clearly visible, avoiding electrical safety issues such as short circuits and missing connections.
[0027] 3. The integrated design fixes the changeover switch and circuit breaker inside the device, making it easy to fix around the test specimen without occupying the mounting bracket rail position to fix the accessories. It will not affect the heat dissipation of the relay due to crowding, and can be tested in a smaller temperature chamber.
[0028] 4. To improve work efficiency and operational safety, and increase the production capacity of power supplies, measuring equipment, and environmental temperature chambers, a batch relay coil temperature rise testing device was designed. This device is easy to install, carry, and store, and comes with a full range of terminal blocks, eliminating the need for adapters. It can also be used for energy efficiency testing of multiple contactors at the same voltage, uninterrupted power supply to other circuits from a single power source, or rapid circuit switching, significantly reducing the need for temporary circuits during testing. Attached Figure Description
[0029] Figure 1 This is a schematic diagram of the batch relay coil temperature rise testing device of this utility model;
[0030] Figure 2 This is a schematic diagram of the internal wiring of the batch relay coil temperature rise testing device of this utility model.
[0031] In the diagram: 1-Housing, 2-Power supply banana head test lead socket, 3-Power supply M3.5 threaded terminal block, 4-Measuring end banana head test lead socket, 5-Copper plate terminal block, 6-Circuit breaker, 7-Main changeover switch, 8-Test sample M3.5 threaded terminal block, 9-First section changeover switch, 10-Second section changeover switch, 11-Third section changeover switch, 12-Fourth section changeover switch, 13-Fifth section changeover switch, 14-Sixth section changeover switch, 15-Seventh section changeover switch. Detailed Implementation
[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0033] like Figure 1 and Figure 2 As shown in the embodiment of this application, a batch relay coil temperature rise testing device includes a housing 1. The housing 1 is equipped with a main changeover switch 7, a power supply terminal, a measuring terminal, and a circuit breaker 6. The connection between the power supply terminal or the measuring terminal and the output terminal can be changed by switching the position of the main changeover switch 7. It integrates a power-off mode, a coil energization mode with all five coils connected together, and a working mode in which any one of the five coils is connected to the measuring circuit while the other four coils are connected to the power supply. There are a total of 7 working modes. Since the relay holding current is in the mA range and the instantaneous current of the relay pull-in does not exceed 10A, the changeover switch and circuit breaker can be selected with smaller rated currents to reduce the space occupied by the device.
[0034] Specifically, the power supply end has a banana-head test lead socket 2 and a power supply end M3.5 threaded terminal block 3; the banana-head test lead socket 2 connects to the incoming line of the circuit breaker 6, facilitating the connection of the power supply using banana-head test leads; the power supply end M3.5 threaded terminal block 3 connects to the incoming line of the circuit breaker 6, facilitating the connection of the power supply using copper wires. Depending on the type of connecting wire, different interfaces can be selected for connection to the power supply end, improving the applicability of the batch relay coil temperature rise testing device.
[0035] The measuring terminal includes a banana-head test lead socket 4 connected to the NC contact of the second-section changeover switch 10, facilitating the connection of the measuring circuit using banana-head test leads. Specifically, the NC1 contact of the second-section changeover switch 10 is connected to one pole of the measuring terminal, and the NC2 contact is connected to the other pole. Contacts C1 and C2 are connected to NO1 and NO2 of the third, fourth, fifth, sixth, and seventh-section changeover switches, respectively, facilitating the connection of the power supply and the changeover switches in the third, fourth, fifth, sixth, and seventh sections that are closed at the NO1 or NO2 position, thereby measuring the resistance of the corresponding relay coil.
[0036] The measuring end also includes a copper strip terminal 5 that connects to the NC1 and NC2 contacts of the second-section changeover switch 10, facilitating direct clamping of the copper strip with the ohmmeter to test the coil resistance. This improves the convenience of testing the coil resistance.
[0037] Circuit breaker 6 has an inlet terminal and an outlet terminal. The inlet terminal connects to the banana-head test lead socket 2 and the M3.5 threaded terminal block 3 of the power supply terminal for easy power supply wiring. The outlet terminal connects to the NC1 and NC2 contacts of the first-section changeover switch 9. Circuit breaker 6 can be quickly switched between power on and off manually. The NC1 contact is connected to the L outlet of circuit breaker 6, and the NC2 contact is connected to the N outlet. The C1 and C2 contacts are connected to the NC1 and NC2 contacts of the third, fourth, fifth, sixth, and seventh-section changeover switches, respectively, facilitating the connection of the power supply to the changeover switches closed in the NC position in the third, fourth, fifth, sixth, and seventh-section changeover switches, thereby supplying power to the corresponding relay coils. The C1 and C2 contacts of the third, fourth, fifth, sixth, and seventh-section changeover switches (S3-S7) are connected to... Figure 2 The diagram shows the K1-K5 terminal connections in the internal wiring diagram of the batch relay coil temperature rise testing device. It may also have M3.5 screw holes and a baffle for quick connection of other circuits to the coil; the power supply and coil circuit interface uses a rubber cable, also with M3.5 screw holes and a baffle, to accommodate different voltage source outputs.
[0038] The housing 1 is also provided with a test sample end M3.5 threaded terminal 8, which includes five terminals (K1-K5) to facilitate the connection of the tested relay coil with copper wires. K1-K5 are respectively connected to the C1 and C2 terminals of the corresponding third, fourth, fifth, sixth and seventh changeover switches (S3-S7).
[0039] The knob of the main changeover switch 7 can be switched to different positions to achieve power supply for each coil and connection of the measurement circuit, such as... Figure 1 The batch relay coil temperature rise testing device shown is specifically designed to...
[0040] a. When the knob is in position I, i.e., the power-off position, the contacts C1 and C2 of the third, fourth, fifth, sixth and seventh changeover switches close with the corresponding NO1 and NO2, connecting to the measurement circuit;
[0041] b. When the knob is in position II, i.e., the energized position, the contacts C1 and C2 of the third, fourth, fifth, sixth, and seventh changeover switches close with the corresponding NC1 and NC2, connecting to the power supply circuit;
[0042] c. When the knob is in position III, i.e., measurement position 1, the contacts C1 and C2 of the third changeover switch are closed with NO1 and the corresponding NO2, connecting to the measurement circuit. The contacts C1 and C2 of the fourth, fifth, sixth, and seventh changeover switches are closed with the corresponding NC1 and NC2, connecting to the power supply circuit.
[0043] d. When the knob is in position IV, i.e., measurement position 2, the contacts C1 and C2 of the fourth section changeover switch are closed with the corresponding NO1 and NO2, connecting to the measurement circuit. The contacts C1 and C2 of the third, fifth, sixth, and seventh section changeover switches are closed with the corresponding NC1 and NC2, connecting to the power supply circuit.
[0044] e. When the knob is in position V, that is, when measuring position 3, the contacts C1 and C2 of the fifth section changeover switch are closed with the corresponding NO1 and NO2, connecting to the measurement circuit. The contacts C1 and C2 of the third, fourth, sixth and seventh section changeover switches are closed with the corresponding NC1 and NC2, connecting to the power supply circuit.
[0045] f. When the knob is in position VI, i.e., measuring position 4, the contacts C1 and C2 of the sixth section changeover switch are closed with the corresponding NO1 and NO2, connecting to the measurement circuit. The contacts C1 and C2 of the third, fourth, fifth, and seventh section changeover switches are closed with the corresponding NC1 and NC2 (connected to the power supply circuit).
[0046] g. When the knob is in position VII, i.e., measurement position 5, the contacts C1 and C2 of the seventh changeover switch are closed with the corresponding NO1 and NO2, connecting to the measurement circuit. The contacts C1 and C2 of the third, fourth, fifth, and sixth changeover switches are closed with the corresponding NC1 and NC2, connecting to the power supply circuit.
[0047] Working principle: When in use, keep the circuit breaker in the closed position, connect terminals K1 to K5 to the five relay coils respectively, select one of the power supply terminals to connect to the power supply, and turn the main transfer switch 7 to position II to supply power to multiple relays simultaneously; when measuring resistance, simply connect the ohmmeter to the measuring terminal and turn the transfer switch to positions III-VII (measurement 1-measurement 5). This allows for the sequential testing of each relay while keeping the other coils energized, enabling safe and efficient measurement of the temperature rise of multiple relay coils. In case of emergencies requiring rapid power disconnection, the circuit breaker can be disconnected.
[0048] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A batch relay coil temperature rise testing device, characterized in that: The device includes a housing, which is equipped with a conversion unit, a power supply terminal, a measuring terminal, and a circuit breaker. The conversion unit includes a main conversion switch, which allows the connection between the power supply terminal or the measuring terminal and the output terminal to be switched by rotating the knob of the main conversion switch. It integrates a power-off mode, a coil-energized mode, and a combined operating mode of measuring circuit and coil energization.
2. The batch relay coil temperature rise testing device as described in claim 1, characterized in that: The switching unit further includes a first switching switch and a second switching switch; wherein, the NC1 contact of the first switching switch is connected to the L output line of the circuit breaker, and the NC2 contact is connected to the N output line of the circuit breaker; the NC1 contact of the second switching switch is connected to one pole of the measuring terminal, and the NC2 contact is connected to the other pole of the measuring terminal.
3. The batch relay coil temperature rise testing device as described in claim 2, characterized in that: The power supply terminal includes a banana-head test lead socket that connects to the incoming line of the circuit breaker, facilitating the connection of the power supply using a banana-head test lead.
4. The batch relay coil temperature rise testing device as described in claim 3, characterized in that: The measuring end includes a banana-head test lead socket, which connects to the NC1 and NC2 contacts of the second-section changeover switch, facilitating the connection of the measuring circuit using a banana-head test lead.
5. The batch relay coil temperature rise testing device as described in claim 4, characterized in that: The power supply terminal also includes an M3.5 threaded terminal block that connects to the power supply terminal of the circuit breaker input line, facilitating the connection of the power supply using copper wires.
6. The batch relay coil temperature rise testing device as described in claim 5, characterized in that: It also includes copper strip terminals that connect to the NC1 and NC2 contacts of the second section of the changeover switch, making it easy for the ohmmeter to directly clamp the copper strip to test the coil resistance.
7. The batch relay coil temperature rise testing device as described in claim 4, characterized in that: The circuit breaker's input terminal is connected to the banana head test wire socket and the M3.5 threaded terminal block of the power supply terminal, facilitating power input wiring. The circuit breaker's output terminal is connected to the NC1 and NC2 contacts of the first section of the changeover switch. The circuit breaker can be quickly switched between power on and power off through manual operation.
8. The batch relay coil temperature rise testing device as described in claim 4, characterized in that: The conversion unit also includes a third conversion switch, a fourth conversion switch, a fifth conversion switch, a sixth conversion switch, and a seventh conversion switch; the C1 and C2 contacts of the third conversion switch, the fourth conversion switch, the fifth conversion switch, the sixth conversion switch, and the seventh conversion switch are respectively connected to the five terminals of K1-K5; a. When the knob is in position I, the contacts C1 and C2 of the third-to-seventh changeover switch close with the corresponding NO1 and NO2, connecting to the measurement circuit; b. When the knob is in position II, the contacts C1 and C2 of the third, fourth, fifth, sixth, and seventh changeover switches close with the corresponding NC1 and NC2, connecting to the power supply circuit; c. When the knob is in position III, the contacts C1 and C2 of the third changeover switch are closed with NO1 and the corresponding NO2, connecting to the measurement circuit. The contacts C1 and C2 of the fourth, fifth, sixth, and seventh changeover switches are closed with the corresponding NC1 and NC2, connecting to the power supply circuit. d. When the knob is in position IV, contacts C1 and C2 of the fourth changeover switch are closed with the corresponding NO1 and NO2, connecting to the measurement circuit; contacts C1 and C2 of the third, fifth, sixth, and seventh changeover switches are closed with the corresponding NC1 and NC2, connecting to the power supply circuit. e. When the knob is in position V, the contacts C1 and C2 of the fifth changeover switch are closed with the corresponding NO1 and NO2, connecting to the measurement circuit. The contacts C1 and C2 of the third, fourth, sixth, and seventh changeover switches are closed with the corresponding NC1 and NC2, connecting to the power supply circuit. f. When the knob is in position VI, contacts C1 and C2 of the sixth section changeover switch are closed with the corresponding NO1 and NO2, connecting to the measurement circuit; contacts C1 and C2 of the third, fourth, fifth, and seventh section changeover switches are closed with the corresponding NC1 and NC2, connecting to the power supply circuit. g. When the knob is in position VII, contacts C1 and C2 of the seventh changeover switch close with the corresponding NO1 and NO2, connecting to the measurement circuit. Contacts C1 and C2 of the third, fourth, fifth, and sixth changeover switches close with the corresponding NC1 and NC2, connecting to the power supply circuit.
9. The batch relay coil temperature rise testing device as described in claim 8, characterized in that: The C1 and C2 contacts of the first section of the changeover switch are connected to the NC1 and NC2 contacts of the third, fourth, fifth, sixth, and seventh section changeover switches, respectively, to facilitate the connection of the power supply and the changeover switches in the third, fourth, fifth, sixth, and seventh section changeover switches that are closed at the NC1 and NC2 positions, thereby supplying power to the corresponding relay coils.
10. The batch relay coil temperature rise testing device as described in claim 9, characterized in that: The C1 and C2 contacts of the second section of the changeover switch are connected to the NO1 and NO2 contacts of the third, fourth, fifth, sixth, and seventh section changeover switches, respectively. This facilitates the connection of the power supply and the changeover switches of the third, fourth, fifth, sixth, and seventh section changeover switches when they are closed at the NO1 and NO2 positions, thereby measuring the resistance of the corresponding relay coil.