CN205880095U - Low voltage equipment transships, open -phase protection characteristic testing arrangement - Google Patents
Low voltage equipment transships, open -phase protection characteristic testing arrangement Download PDFInfo
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- CN205880095U CN205880095U CN201620066698.1U CN201620066698U CN205880095U CN 205880095 U CN205880095 U CN 205880095U CN 201620066698 U CN201620066698 U CN 201620066698U CN 205880095 U CN205880095 U CN 205880095U
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Abstract
The utility model provides a low voltage equipment transships, open -phase protection characteristic testing arrangement, the device includes big current generator, the voltage regulator, transfer the galvanic electricity motivation, IGBT, the drive protection circuit, the AVR singlechip, electronic change over switch, the control source, current transformer and signal conditioning circuit, it adopts the AVR singlechip according to examination article condition automatically regulated test current and record experimental result, artifical measuring error has been avoided, the efficiency of work is improved and measuring accuracy, the basis is established in development for the intelligent technique of electrical equipment testing arrangement.
Description
Technical field
This utility model belongs to electric equipment technical field of measurement and test, and a kind of especially low voltage equipment transships, breaks and protect mutually
Protect characteristic test device and measuring technology.
Background technology
Overload, open-phase protection characteristic test refer to electrical equipment under specific rated current, by test device to test
Its fault actions time.Overload is named again overload, refers to that the long-term work electric current of electrical equipment exceedes its rated value, is the equipment longevity
Order less or damage.Break and refer to the disconnected phase of a phase or three-phase imbalance in motor operation course mutually, cause motor output to turn
When moment ratio is properly functioning much smaller, in the case of load is constant, operating current increase, cause overheated damage equipment.The lowest
Piezoelectricity device apparatus overload, open-phase protection test device and measuring technology level is backward, automaticity is low, uses catalyst, continues
The device such as electrical equipment, control knob forms, and test process needs manually regulation and manual record experimental data.
Summary of the invention
Utility model purpose:
This utility model provides a kind of low voltage equipment overload, open-phase protection characteristic test device and method, its purpose
It is to solve the most existing problem.
Technical scheme:
A kind of low voltage equipment overload, open-phase protection characteristic test device, it is characterised in that: this device includes big electric current
Generator, pressure regulator, tune stream motor, IGBT, Drive Protecting Circuit, AVR single chip, electronic permutator, control power supply, electricity
Current transformer and signal conditioning circuit, display unit, control panel, communication module and industrial computer；Wherein AVR single chip and big electricity
Flow-generator connects, and the input of strong current generator exports with the electric current of pressure regulator and is connected, and pressure regulator rotates main shaft and tune
The main shaft of stream motor is connected, and adjusts the end that controls of stream motor to pass through the letter of IGBT and Drive Protecting Circuit and AVR single chip
Number outfan PA0 is connected, and the end that controls of electronic permutator is connected with the outfan PA1 of AVR single chip, current transformer
Test lead be connected with test test product wire, control the signal output part PA2 phase of the voltage-regulation end of power supply and AVR single chip
Connecting, the voltage output end controlling power supply is connected with test product power supply terminal, the signal output part of current transformer and letter
The input of number modulate circuit is connected, and the outfan of signal conditioning circuit is connected with the input PA3 of AVR single chip, examination
Product switching device input is connected with the current output terminal of strong current generator, the outfan of test product switching device and test product master
Loop is connected, and the input of display unit is connected with outfan PB0-PB5, PC0-PC2 of AVR single chip, control panel
Outfan be connected with the input PA4-PA7 of AVR single chip, the industrial computer communication by communication module and AVR single chip
Interface SPI is connected.
Strong current generator capacity is 60KW, is made up of four different magnetic path parallel connections, respectively two 10KW and two
The magnetic circuit of 20KW, the output current value of one of them 10KW magnetic circuit is adjustable, and another one 10KW magnetic circuit and two 20KW magnetic circuits are defeated
Going out electric current is fixed value, can be produced the output of 0-60KW, the gear of electronic permutator by different compound modes
The power output relation corresponding with strong current generator is as follows:
1st " 0 " position: all off；" 1 " position: 0 ~ 10KW can be put into adjustable；
2nd " 0 " position: all off；" 2 " position: 0 ~ 10KW adjustable+10KW total head can be put into；
3rd " 0 " position: all off；" 3 " position: 0 ~ 10KW adjustable+20KW total head can be put into；
4th " 0 " position: all off；" 4 " position: 0 ~ 10KW adjustable+10KW total head+20KW total head can be put into；
5th " 0 " position is all off；" 5 " position: 0 ~ 10KW adjustable+20KW total head+20KW total head can be put into；
6th " 0 " position: all off；" 6 " position: 0 ~ 10KW adjustable+10KW total head+20KW total head+20KW can be put into complete
Pressure, now high-current generation device is at full capacity.
The method of testing that low voltage equipment overload in utilization, open-phase protection characteristic test device are implemented, its feature
It is:
(1), according to test product load current value, select suitably to connect wire, complete test product main loop circuit and connect；I.e. exist
In the case of heat radiation is good, usual sectional area is that the copper conductor of 1 square millimeter can pass through 10 Ampere currents.
(2), by test product control transformator primary side to disconnect with major loop, select to control power supply according to the rated voltage of test product
Gear, complete test product control power supply connection；(voltage and the relation of gear: control have 660V, 380V, 220V not on power supply
With voltage gear, such as test product rated voltage is 220V, controls power supply and selects the gear of 220V)
(3), according to carry out the project tested, determining test current, AVR single chip is according to the control of input on control panel
System instruction controls motor and electronic permutator, and the electric current output of regulation strong current generator, AVR single chip is examined in real time simultaneously
Survey current value, until reaching the current value needed；
(4), AVR single chip open timer, restart the electric current output of strong current generator, and record given electric current
Time to protector action；
(5), the electric current output of strong current generator is closed, dismounting test product and strong current generator and control the connection of power supply
Line, arranges experimental tool, completes overload characteristic testing experiment.
AVR single chip is the core of experimental provision, has been responsible for control instruction and has received, drives signal to send, tests electric current
Regulation, data show and communication function, and the function of AVR single chip is realized by following program, and low voltage equipment transships, breaks
Phase protection feature test software flow is as follows:
Step 1, initialization；
Step 2, System self-test；
Step 3, control instruction receive；
Step 4, electric current are reconciled；
Step 5, current detecting；
Step 6, whether reach predicted value；Reach to perform step 7, otherwise perform step 4；
Step 7, guard time are tested
Step 8, state show；
Step 9, data communication；
Step 10, end.
Advantage and effect
This utility model is a kind of low voltage equipment overload, open-phase protection characteristic test device and method, and it uses AVR
Single-chip microcomputer is automatically adjusted test current and record experimental result according to test product situation, it is to avoid the error of manual measurement, improves
Work efficiency and measuring accuracy, the development for electric equipment test device intellectualized technology lays the foundation.
Accompanying drawing explanation
Fig. 1 is low voltage equipment overload, open-phase protection characteristic test device structure chart；
Fig. 2 is low voltage equipment overload, open-phase protection characteristic test software flow pattern；
Wherein, 1, strong current generator；2, pressure regulator；3, stream motor is adjusted；4、IGBT；5, Drive Protecting Circuit；6、AVR
Single-chip microcomputer；7, electronic permutator；8, power supply is controlled；9, current transformer；10, signal conditioning circuit；11, test product switching dress
Put；12, display unit；13, control panel；14, communication module；15, industrial computer；16, test product.
Detailed description of the invention
Below in conjunction with the accompanying drawings this utility model is described further:
As it can be seen, the utility model proposes a kind of low voltage equipment overload, open-phase protection characteristic test device,
It uses AVR single chip to be automatically adjusted test current and record experimental result according to test product situation, it is to avoid the mistake of manual measurement
Difference, improves work efficiency and measuring accuracy, and the development for electric equipment test device intellectualized technology lays the foundation.Accompanying drawing 1
For low voltage equipment overcurrent protection characteristic test device structure chart, accompanying drawing 2 is low voltage equipment overcurrent protection characteristic test
Flow chart, illustrates patent below in conjunction with the accompanying drawings.
This device includes strong current generator 1, pressure regulator 2, adjusts stream motor 3, IGBT4, Drive Protecting Circuit 5, AVR mono-
Sheet machine 6, electronic permutator 7, control power supply 8, current transformer 9 and signal conditioning circuit 10, display unit 12, control panel
13, communication module 14 and industrial computer 15；Wherein AVR single chip 6 is connected with strong current generator 1, the input of strong current generator 1
Holding the electric current with pressure regulator 2 to export to be connected, pressure regulator 2 rotates main shaft and is connected with the main shaft adjusting stream motor 3, adjusts stream electronic
The end that controls of machine 3 is connected with the signal output part PA0 of AVR single chip 6 by IGBT4 and Drive Protecting Circuit 5, electronic conversion
The end that controls of switch 7 is connected with the outfan PA1 of AVR single chip 6, and the test lead of current transformer 9 is led with test test product 16
Line is connected, and the voltage-regulation end controlling power supply 8 is connected with the signal output part PA2 of AVR single chip 6, controls the electricity of power supply 8
Pressure outfan is connected with test product 16 power supply terminal, the signal output part of current transformer 9 and signal conditioning circuit 10
Input is connected, and the outfan of signal conditioning circuit 10 is connected with the input PA3 of AVR single chip 6, test product switching device
11 inputs are connected with the current output terminal of strong current generator 1, and outfan and the test product 16 of test product switching device 11 are led back
Road is connected, and the input of display unit 12 is connected with outfan PB0-PB5, PC0-PC2 of AVR single chip 6, control panel
The outfan of 13 is connected with the input PA4-PA7 of AVR single chip 6, and industrial computer 15 is by communication module 14 and AVR single chip
The communication interface SPI of 6 is connected.
Strong current generator 1 capacity is 60KW, is made up of four different magnetic circuits, respectively two 10KW and two 20KW
Magnetic circuit, the output current value of one of them 10KW magnetic circuit is adjustable, another one 10KW magnetic circuit and two 20KW magnetic circuits output electricity
Stream is fixed value, can be produced the output of 0-60KW by different compound modes, and the gear of electronic permutator 7 is with big
The power output relation of current feedback circuit 1 correspondence is as follows:
1st " 0 " position: all off；" 1 " position: 0 ~ 10KW can be put into adjustable；
2nd " 0 " position: all off；" 2 " position: 0 ~ 10KW adjustable+10KW total head can be put into；
3rd " 0 " position: all off；" 3 " position: 0 ~ 10KW adjustable+20KW total head can be put into；
4th " 0 " position: all off；" 4 " position: 0 ~ 10KW adjustable+10KW total head+20KW total head can be put into；
5th " 0 " position is all off；" 5 " position: 0 ~ 10KW adjustable+20KW total head+20KW total head can be put into；
6th " 0 " position: all off；" 6 " position: 0 ~ 10KW adjustable+10KW total head+20KW total head+20KW can be put into complete
Pressure, now high-current generation device is at full capacity.
Patent relates to device can complete low voltage equipment overload, open-phase protection characteristic test test, below with overload
As a example by protection test, the work process to device illustrates:
1, according to test product load current value, select suitably to connect wire, complete test product main loop circuit and connect；
2, test product controls transformator primary side disconnect with major loop, select to control power supply according to the rated voltage of test product
Gear, completes test product and controls the connection of power supply；
3, basis to carry out the project tested, and determines test current, and AVR single chip is according to the control of input on control panel
Instruction controls motor and electronic permutator, and the electric current output of regulation strong current generator, AVR single chip detects in real time simultaneously
Current value, until reaching the current value needed；
4, AVR single chip opens timer, restarts the electric current output of strong current generator, and the given electric current of record arrives
The time of protector action；
5, the electric current output of strong current generator, dismounting test product and strong current generator and the connection of control power supply are closed
Line, arranges experimental tool, completes overload characteristic testing experiment.
AVR single chip is the core of experimental provision, has been responsible for control instruction and has received, drives signal to send, tests electric current
Regulation, data show and communication function.The function of AVR single chip is realized by software program, and low voltage equipment transships, breaks
As shown in Figure 2, software program is as follows for phase protection feature test software flow:
Step 1, initialization；
Step 2, System self-test；
Step 3, control instruction receive；
Step 4, electric current are reconciled；
Step 5, current detecting；
Step 6, whether reach predicted value；Reach to perform step 7, otherwise perform step 4；
Step 7, guard time are tested
Step 8, state show；
Step 9, data communication；
Step 10, end.
Claims (2)
1. a low voltage equipment overload, open-phase protection characteristic test device, it is characterised in that: this device includes that big electric current is sent out
Raw device (1), pressure regulator (2), adjust stream motor (3), IGBT(4), Drive Protecting Circuit (5), AVR single chip (6), electronic conversion
Switch (7), control power supply (8), current transformer (9) and signal conditioning circuit (10), display unit (12), control panel
(13), communication module (14) and industrial computer (15)；Wherein AVR single chip (6) is connected with strong current generator (1), and big electric current is sent out
The input of raw device (1) exports with the electric current of pressure regulator (2) and is connected, and pressure regulator (2) rotates main shaft and adjusts stream motor (3)
Main shaft is connected, and adjusts the control end of stream motor (3) to pass through IGBT(4) and Drive Protecting Circuit (5) and AVR single chip (6)
Signal output part PA0 is connected, and the control end of electronic permutator (7) is connected with the signal output part PA1 of AVR single chip (6)
Connecing, the test lead of current transformer (9) is connected with test test product (16) wire, controls voltage-regulation end and the AVR of power supply (8)
The signal output part PA2 of single-chip microcomputer (6) is connected, and controls voltage output end and test product (16) power supply terminal of power supply (8)
Being connected, the signal output part of current transformer (9) is connected with the input of signal conditioning circuit (10), signal conditioning circuit
(10) outfan is connected with the input PA3 of AVR single chip (6), and test product switching device (11) input is sent out with big electric current
The current output terminal of raw device (1) is connected, and the outfan of test product switching device (11) is connected with test product (16) major loop, display
The input of unit (12) is connected with outfan PB0-PB5, PC0-PC2 of AVR single chip (6), control panel (13) defeated
Going out end to be connected with the input PA4-PA7 of AVR single chip (6), industrial computer (15) passes through communication module (14) and AVR single chip
(6) communication interface SPI is connected.
Low voltage equipment the most according to claim 1 overload, open-phase protection characteristic test device, it is characterised in that:
Strong current generator (1) capacity is 60KW, is made up of four different magnetic circuits, respectively two 10KW's and two 20KW
Magnetic circuit, the output current value of one of them 10KW magnetic circuit is adjustable, another one 10KW magnetic circuit and two 20KW magnetic circuit output electric currents
For fixed value, can be produced the output of 0-60KW by different compound modes, the gear of electronic permutator (7) is with big
The power output relation that current feedback circuit (1) is corresponding is as follows:
1st " 0 " position: all off；" 1 " position: 0 ~ 10KW can be put into adjustable；
2nd " 0 " position: all off；" 2 " position: 0 ~ 10KW adjustable+10KW total head can be put into；
3rd " 0 " position: all off；" 3 " position: 0 ~ 10KW adjustable+20KW total head can be put into；
4th " 0 " position: all off；" 4 " position: 0 ~ 10KW adjustable+10KW total head+20KW total head can be put into；
5th " 0 " position is all off；" 5 " position: 0 ~ 10KW adjustable+20KW total head+20KW total head can be put into；
6th " 0 " position: all off；" 6 " position: 0 ~ 10KW adjustable+10KW total head+20KW total head+20KW total head can be put into, this
Time high-current generation device at full capacity.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520953410 | 2015-11-25 | ||
| CN2015209534108 | 2015-11-25 |
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| Publication Number | Publication Date |
|---|---|
| CN205880095U true CN205880095U (en) | 2017-01-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620066698.1U Withdrawn - After Issue CN205880095U (en) | 2015-11-25 | 2016-01-22 | Low voltage equipment transships, open -phase protection characteristic testing arrangement |
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| CN (1) | CN205880095U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105548795A (en) * | 2015-11-25 | 2016-05-04 | 国家电网公司 | Overloading and open-phase protection characteristic testing device and method for low-voltage electric appliance equipment |
-
2016
- 2016-01-22 CN CN201620066698.1U patent/CN205880095U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105548795A (en) * | 2015-11-25 | 2016-05-04 | 国家电网公司 | Overloading and open-phase protection characteristic testing device and method for low-voltage electric appliance equipment |
| CN105548795B (en) * | 2015-11-25 | 2018-12-14 | 国家电网公司 | Low voltage equipment overload, open-phase protection characteristic test device and method |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20170111 Effective date of abandoning: 20181214 |
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| AV01 | Patent right actively abandoned |