CN208224383U - A kind of low-voltage and high-current temperature rise test system - Google Patents

Abstract

The utility model discloses a kind of low-voltage and high-current temperature rise test systems, including the first disconnecting switch, first disconnecting switch has been sequentially connected in series the first breaker by conducting wire, second disconnecting switch, third disconnecting switch, second breaker, generator, motor and frequency converter, first disconnecting switch is successively parallel with temperature rise system and test product by conducting wire, temperature rise system includes input detection, operation button and power module, the output end of input detection is connected with HCNR201 chip, the output end of HCNR201 chip is connected with ADS7825 chip, the output end of ADS7825 chip is connected with FPGAEP2C8Q208 chip, the utility model relates to power industry technical field of test equipment.The low-voltage and high-current temperature rise test system, achieve the purpose that the traditional temperature rise test system error of reduction, greatly reduced man power and material, the labour for effectively alleviating testing crew is slight, the generation for avoiding accident improves the precision of test result and the automatization level of test process.

Description

A kind of low-voltage and high-current temperature rise test system

Technical field

The utility model relates to power industry technical field of test equipment, specially a kind of low-voltage and high-current temperature rise test System.

Background technique

For electrical equipment when operating normally, for a long time by operating current, the energy conversion of generation is thermal energy, makes appliance material Temperature increases, and is such as more than that a certain range will make the mechanical strength of appliance material, physical property decline, is easy initiation accident, because This, defines the maximum temperature or temperature rise of the permission long-term work of different appliance materials in national standard.The purpose of temperature rise test It is the temperature or temperature rise of measurement subject each component of electric appliance, to determine whether test product meets the requirements of the standard, using Fast simulation Test method, i.e. main circuit pass to rated current.The characteristics of temperature rise test is: the time is longer, middle-size and small-size test process need seven, Eight hours, and the test of high-power transformer needs more than ten hour or even the longer time；Expend big, therefore many producers are in order to circumvent use Electric peak and night test；Test process dullness is uninteresting, and temperature value is repeatedly measured in long-time.

Not only error is big for traditional temperature rise test system, but also occupies a large amount of man power and materials, is not easy to the use of people, The work load for increasing testing crew, influences the result and precision of test, and is usually easy to happen safety accident.

Utility model content

In view of the deficiencies of the prior art, the utility model provides a kind of low-voltage and high-current temperature rise test system, solves Not only error is big for the temperature rise test system of system, but also the problem of occupy a large amount of man power and materials.

In order to achieve the above object, the utility model is achieved by the following technical programs: a kind of low-voltage and high-current temperature Pilot system is risen, including the first disconnecting switch, first disconnecting switch have been sequentially connected in series the first breaker, second by conducting wire Disconnecting switch, third disconnecting switch, the second breaker, generator, motor and frequency converter, first disconnecting switch is by leading Line is successively parallel with temperature rise system and test product.

Preferably, the temperature rise system includes input detection, operation button and power module.

Preferably, the output end of the input detection is connected with HCNR201 chip, the output end of the HCNR201 chip It is connected with ADS7825 chip, the output end of the ADS7825 chip is connected with FPGAEP2C8Q208 chip, described FPGAEP2C8Q208 chip has been bi-directionally connected isolation drive, the output end of the isolation drive be connected separately with switch output and D/A output.

Preferably, the output end of the operation button is connected with TLP521 chip, and the output end of the TLP521 chip connects It is connected to DSP2812 chip, the DSP2812 chip has been bi-directionally connected 6N136 chip, and the 6N136 chip has been bi-directionally connected MAX485 chip, the MAX485 chip have successively been bi-directionally connected long-range monitoring backstage and touch screen.

Preferably, the output end of the power module is connected with 1117 power supply chips.

Preferably, the FPGAEP2C8Q208 chip is in be bi-directionally connected with DSP2812 chip.

Beneficial effect

The utility model provides a kind of low-voltage and high-current temperature rise test system.Have following the utility model has the advantages that the low electricity High current temperature rise test system is pressed, by the way that including the first disconnecting switch, first disconnecting switch has been sequentially connected in series by conducting wire First breaker, the second disconnecting switch, third disconnecting switch, the second breaker, generator, motor and frequency converter, described One disconnecting switch is successively parallel with temperature rise system and test product by conducting wire, and the temperature rise system includes input detection, operation button And power module, achieve the purpose that the traditional temperature rise test system error of reduction, greatly reduced man power and material, effectively The labour for alleviating testing crew it is slight, avoid the generation of accident, improve test result precision and test process it is automatic Change horizontal.

Detailed description of the invention

Fig. 1 is Tthe utility model system major loop functional block diagram；

Fig. 2 is the utility model temperature rise power-supply controller of electric hardware structure diagram.

In figure: 1 first disconnecting switch, 2 frequency converters, 3 motor, 4 generators, 5 first breakers, 6 second breakers, 7 Second disconnecting switch, 8 third disconnecting switch, 9 temperature rise systems, 10 test products, 11 input detections, 12HCNR201 chip, 13ADS7825 chip, 14FPGAEP2C8Q208 chip, 15 isolation drives, 16 switch outputs, 17D/A output, 18 operation buttons, 19TLP521 chip, 20DSP2812 chip, 216N136 chip, 22MAX485 chip, 23 power modules, 241117 power supply cores Piece, 25 long-range monitoring backstages, 26 touch screens.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work Every other embodiment obtained, fall within the protection scope of the utility model.

The utility model provides a kind of technical solution referring to FIG. 1-2: a kind of low-voltage and high-current temperature rise test system, Including the first disconnecting switch 1, the first disconnecting switch 1 has been sequentially connected in series the first breaker 5, the second disconnecting switch 7, by conducting wire Three disconnecting switch 8, the second breaker 6, generator 4, motor 3 and frequency converter 2, the first disconnecting switch 1 pass through conducting wire successively simultaneously It is associated with temperature rise system 9 and test product 10, temperature rise system 9 includes input detection 11, operation button 18 and power module 23, operation button Directly defeated people inputs the output end of detection 11 to DSP2812 chip 20 to 18 equal digital quantity signals after the isolation of TLP521 chip 19 Be connected with HCNR201 chip 12, the output end of HCNR201 chip is connected with ADS7825 chip 13, ADS7825 chip 13 it is defeated Outlet is connected with FPGAEP2C8Q208 chip 14, and FPGAEP2C8Q208 chip 14 has been bi-directionally connected isolation drive 16, and isolation is driven Dynamic 16 output end is connected separately with switch 16 and D/A of output output 17, and the output end of operation button 18 is connected with TLP521 core Piece 19, the output end of TLP521 chip 19 are connected with DSP2812 chip 20, and the operation that DSP2812 chip 20 obtains after calculating refers to Pulse is enabled and is adjusted, after carrying out chain judgement by FPGAEP2C8Q208 chip 14, is exported through isolation drive to pilot system, DSP2812 chip 20 has been bi-directionally connected 6N136 chip 21, and 6N136 chip 21 has been bi-directionally connected MAX485 chip 22, MAX485 core Piece 22 has successively been bi-directionally connected long-range monitoring backstage 25 and touch screen 26, the output end of power module 23 are connected with 1117 power supply cores Piece 24, system 220V power supply is converted to mutually isolated ± 15V ,+5V by power module 23, then through 24 turns of 1117 power supply chip Change 3.3V, 1.9V, 1.2V power supply required for DSP2812 chip 20, FPGAEP2C8Q208 chip 14, FPGAEP2C8Q208 core Piece 14 and DSP2812 chip 20 is in be bi-directionally connected.

In use, 2 drive motor 3 of frequency converter, which carrys out drawing generator 4, realizes power generation, by the output for adjusting frequency converter 2 3 revolving speed of frequency shift motor solves demand of the different test products to different tests frequency, meanwhile, using major loop first every Pass 1, the second disconnecting switch 7 and third disconnecting switch 8 are left, it can be achieved that standby between variable-frequency power generation system and 50 hertz of power frequency After the high voltage power supply input temperature rise system 9 provided with, power supply system, pressure regulator pressure regulation is first passed around, current lifting device liter is then passed through It is available to test product 10 after stream and does temperature rise test.

It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment Intrinsic element.

While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art, It is understood that these embodiments can be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaired Change, replacement and variant, the scope of the utility model is defined by the appended claims and the equivalents thereof.

Claims (6)

1. a kind of low-voltage and high-current temperature rise test system, including the first disconnecting switch (1), it is characterised in that: described first every It leaves pass (1) and the first breaker (5), the second disconnecting switch (7), third disconnecting switch (8), second has been sequentially connected in series by conducting wire Breaker (6), generator (4), motor (3) and frequency converter (2), first disconnecting switch (1) are successively in parallel by conducting wire There are temperature rise system (9) and test product (10).

2. a kind of low-voltage and high-current temperature rise test system according to claim 1, it is characterised in that: the temperature rise system It (9) include input detection (11), operation button (18) and power module (23).

3. a kind of low-voltage and high-current temperature rise test system according to claim 2, it is characterised in that: the input detection (11) output end is connected with HCNR201 chip (12), and the output end of the HCNR201 chip is connected with ADS7825 chip (13), the output end of the ADS7825 chip (13) is connected with FPGAEP2C8Q208 chip (14), the FPGAEP2C8Q208 Chip (14) has been bi-directionally connected isolation drive (15), and the output end of the isolation drive (15) is connected separately with switch output (16) (17) are exported with D/A.

4. a kind of low-voltage and high-current temperature rise test system according to claim 2, it is characterised in that: the operation button (18) output end is connected with TLP521 chip (19), and the output end of the TLP521 chip (19) is connected with DSP2812 chip (20), the DSP2812 chip (20) has been bi-directionally connected 6N136 chip (21), and the 6N136 chip (21) has been bi-directionally connected MAX485 chip (22), the MAX485 chip (22) have successively been bi-directionally connected long-range monitoring backstage (25) and touch screen (26).

5. a kind of low-voltage and high-current temperature rise test system according to claim 2, it is characterised in that: the power module (23) output end is connected with 1117 power supply chips (24).

6. a kind of low-voltage and high-current temperature rise test system according to claim 3, it is characterised in that: described FPGAEP2C8Q208 chip (14) is in be bi-directionally connected with DSP2812 chip (20).