CN107064636A - The method of testing and device of D.C. isolation impedance when a kind of electric wire is long - Google Patents
The method of testing and device of D.C. isolation impedance when a kind of electric wire is long Download PDFInfo
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- CN107064636A CN107064636A CN201710076780.1A CN201710076780A CN107064636A CN 107064636 A CN107064636 A CN 107064636A CN 201710076780 A CN201710076780 A CN 201710076780A CN 107064636 A CN107064636 A CN 107064636A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
- G01R27/025—Measuring very high resistances, e.g. isolation resistances, i.e. megohm-meters
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Abstract
The method of testing of D.C. isolation impedance when a kind of electric wire of present invention offer is long, including：Relevant criterion both domestic and external and technical data are collected, and is analyzed and researched；Test device is determined, test device uses Digital Circuit Control；According to design, research test device realization method and system is integrated；Carry out verification experimental verification using test device, be further improved and optimize, finally verify its reasonability and reliability, finally draw data, the present invention also provide a kind of electric wire it is long when D.C. isolation impedance test device；Compared with prior art, the present invention has following beneficial effect：The device requirement in laboratory can not only be met, fast and accurately measure, improve testing efficiency, the capacity of equipment of Enhancement test room, and the innovation ability of lab assistant can be lifted, the technical capability of Enhancement test room, inspection and quarantining for import/export detection technique level can be lifted energetically, technical support and technical guarantee are provided for inspection and quarantine.
Description
Technical field
The present invention is the method for testing and device of D.C. isolation impedance when a kind of electric wire is long, belongs to electric wire neck
Domain.
Background technology
D.C. isolation impedance is IEC 60227-5 when electric wire is long:2011《Polyvinyl Chloride
Insulated Cables Of Rated Voltages Up To And Including 450/750V–Part 5:
Flexible cables(cords)》In increase newly safety test project.And the effective examination criteria GB/T of domestic current
5023.5-2008《Rated voltage 450V/750V and the part of following polyvinyl chloride cable the 5th：Flexible cable (flexible cord)》It is equivalent
Using IEC 60227-5:2003, related request and test method without electric wire D.C. isolation impedance when long in national standard.
Therefore, to electric wire when long the research of the test method of D.C. isolation impedance have important practical significance.
IEC 60227-5:2011《Polyvinyl Chloride Insulated Cables Of Rated
Voltages Up To And Including 450/750V–Part 5:Flexible cables(cords)》4.4.2 middle rule
Fixed, test method is to remove the sample that length is 5 meters after outer jacket, and immersion concentration is 10g/l, and temperature is (60 ± 5) DEG C
In Nacl solution, then the negative pole of 220V direct current is connected to examination by the length that electric wire two ends are stayed in outside solution about 250mm
On the conductor of sample, positive pole is connected to the copper electrode of an immersion solution, tests 240h.Do not occur it is required that being insulated in test process
Puncture, after test terminates, electric wire outer surface is without damaged vestige.
Due to IEC 60227-5:2011 be the implementation of in September, 2011, and the implementation time is shorter, and does not provide electric wire in national standard
The D.C. isolation impedance examination when progress electric wire is long of D.C. isolation impedance experiments when cable is long, domestic majority enterprise and laboratory
Test method when testing is simultaneously immature, is more the absence of corresponding testing equipment, the life to domestic indoor decorative lighting loop flexible cord
Production, the development examined, merchandised form obstruction.
The content of the invention
In view of the deficienciess of the prior art, it is an object of the present invention to provide a kind of D.C. isolation impedance when long of electric wire
Method of testing and device, to solve the problems mentioned in the above background technology.
To achieve these goals, the present invention is to realize by the following technical solutions：A kind of electric wire is straight when long
The method of testing of insulation impedance is flowed, including：
Relevant criterion both domestic and external and technical data are collected, and is analyzed and researched；
Test device is determined, test device uses Digital Circuit Control；
According to design, research test device realization method and system is integrated；
Verification experimental verification is carried out using test device, is further improved and optimizes, its reasonability is finally verified and reliable
Property, finally draw data.
Further, it is determined that test device, test device is included using the specific steps of Digital Circuit Control：
Test device of the selection with power module, interface module, control and alarm module and display module, was tested
Digital Circuit Control test device is used in journey, D.C. isolation impedance is tested when long to electric wire.
Further, described according to design, the integrated step of research test device realization method and system includes：
Optimized from satisfactory hardware and further integrated, the hardware of test device is being realized function
On the basis of simplify, increase the reliability of hardware capability, and on the basis of reliability is able to guarantee, optimize equipment operation mode,
Short form test step.
The test device of D.C. isolation impedance when a kind of electric wire is long, including：
Power module, for power input, is 220Vac inputs, includes fuse and backup fuse；
Interface module, is made up of low voltage outlet terminals, high voltage output terminal, ground terminal and serial line interface；
Control and alarm module, are made up of control button and siren, for controlling test mode and alarm；
Display module, is a kind of 16*2 Character Mode LCDs.
Further, the serial line interface is the standards of RS -232, and baud rate is 9600, serial communication frame agreement：One is risen
Beginning position, eight bit data position, a stop position totally ten frames.
Further, the control button includes：
Stop key, it is a kind of red without lock button, when test failure is alarmed, alarm can be closed and enter wait shape
State；In test process, can also as interrupt test switch；
Start key, a kind of green without lock button, indicator lamp is contained in inside simultaneously, can be used as the starting switch tested；
Set key, for entering setting state, parameter setting is carried out in the state of setting；
Subtract key, in the state of setting, being used as parameter values enter key；Lowered in test process as output voltage
Key；
Increase key, in the state of setting, being used as parameter values enter key；Raised in test process as output voltage
Key；
ESC Escape, status function key is set for leaving.
Beneficial effects of the present invention：The method of testing and dress of D.C. isolation impedance when a kind of electric wire of the present invention is long
Put, the device requirement in laboratory can not only be met, fast and accurately measured, improve testing efficiency, Enhancement test room
Capacity of equipment, and the innovation ability of lab assistant can be lifted, the technical capability of Enhancement test room can be lifted out energetically
Passport control quarantine detection technique level, technical support and technical guarantee are provided for inspection and quarantine.
Brief description of the drawings
By reading the detailed description made with reference to the following drawings to non-limiting example, further feature of the invention,
Objects and advantages will become more apparent upon：
Fig. 1 is the flow chart of the method for testing of D.C. isolation impedance when a kind of electric wire of the invention is long；
Fig. 2 is to wait status display figure in the test device of D.C. isolation impedance when a kind of electric wire of the invention is long；
Fig. 3 is that test group sets state diagram in the test device of D.C. isolation impedance when a kind of electric wire of the invention is long；
Fig. 4 is that testing procedure sets state in the test device of D.C. isolation impedance when a kind of electric wire of the invention is long
Figure；
Fig. 5 is item setup state diagram in the test device of D.C. isolation impedance when a kind of electric wire of the invention is long；
Fig. 6 is that test voltage sets state in the test device of D.C. isolation impedance when a kind of electric wire of the invention is long
Figure；
Fig. 7 is that resistance sets state diagram in the test device of D.C. isolation impedance when a kind of electric wire of the invention is long；
Fig. 8 is that the testing time sets state in the test device of D.C. isolation impedance when a kind of electric wire of the invention is long
Figure；
Fig. 9 is that test output state is set in the test device of D.C. isolation impedance when a kind of electric wire of the invention is long
Figure；
Figure 10 is a kind of electric wire of the invention test mode figure in the test device of D.C. isolation impedance when long.
Embodiment
To be easy to understand the technical means, the inventive features, the objects and the advantages of the present invention, with reference to
Embodiment, is expanded on further the present invention.
Referring to Fig. 1, the present invention provides a kind of technical scheme：The test side of D.C. isolation impedance when a kind of electric wire is long
Method, including：
Relevant criterion both domestic and external and technical data are collected, and is analyzed and researched；
Test device is determined, test device uses Digital Circuit Control, and selection has power module, interface module, control
And the test device of alarm module and display module, Digital Circuit Control test device is used in process of the test, to electric wire electricity
D.C. isolation impedance is tested when cable is long；
According to design, research test device realization method and system is integrated, from satisfactory hardware and carries out
Further optimize integrated, the hardware of test device is simplified on the basis of function is realized, increase the reliability of hardware capability,
And on the basis of reliability is able to guarantee, optimize equipment operation mode, short form test step；
Verification experimental verification is carried out using test device, is further improved and optimizes, its reasonability is finally verified and reliable
Property, finally draw data.
The test device of D.C. isolation impedance when a kind of electric wire is long, including：
Power module, for power input, is 220Vac inputs, includes fuse and backup fuse；
Interface module, is made up of low voltage outlet terminals, high voltage output terminal, ground terminal and serial line interface；
Control and alarm module, are made up of control button and siren, for controlling test mode and alarm；
Display module, is a kind of 16*2 Character Mode LCDs.
Serial line interface is the standards of RS -232, and baud rate is 9600, serial communication frame agreement：One start bit, eight bit data
Position, a stop position totally ten frames.
Control button includes：
Stop key, it is a kind of red without lock button, when test failure is alarmed, alarm can be closed and enter wait shape
State；In test process, can also as interrupt test switch；
Start key, a kind of green without lock button, indicator lamp is contained in inside simultaneously, can be used as the starting switch tested；
Set key, for entering setting state, parameter setting is carried out in the state of setting；
Subtract key, in the state of setting, being used as parameter values enter key；Lowered in test process as output voltage
Key；
Increase key, in the state of setting, being used as parameter values enter key；Raised in test process as output voltage
Key；
ESC Escape, status function key is set for leaving.
As one embodiment of the present of invention：When actual use, by electric wire it is long when D.C. isolation impedance
Test device each parameter is set：
(1) wait state is shown
During start, tester enters standing-by state, and display is all setting numerical value, and standing-by state shows such as Fig. 2,
(2) test group sets state
Enter test group by set key in the wait state and state be set, status display such as Fig. 3 is set,
(3) testing procedure sets state
Enter testing procedure by set key under test group setting state and state is set, status display such as Fig. 4 is set, pressed
Testing procedure can be changed by subtracting key or increasing key key, and one has 6 steps, and test is proceeded by from current procedures after being provided with, until
Test terminates.
(4) item setup state
Enter item setup state by set key under testing procedure setting state, status display such as Fig. 5 is set, by subtracting
Key or increasing key key can change test event.Test event for insulation or(Represent that this step is not tested).
(5) test voltage sets state
Continue to press set key, state is set into voltage, output voltage values, such as Fig. 6 can be changed by pressing to subtract key or increase key key.
(6) resistance sets state
Continue to press set key, state be set into resistance, test resistance low alarm setting value can be changed by pressing to subtract key or increase key key,
Such as Fig. 7.
(7) testing time sets state
Continue to press set key, state is set into resistance, test time delay, such as Fig. 8 can be changed by pressing to subtract key or increase key key.
(8) test output state is set
Continue to press set key, set into output state, output situation can be changed by pressing to subtract key or increase key key.After 1-6 is represented
The state of panel lead-out terminal.L:Output low level is represented, H represents to export high level.O represents to be output as sky, i.e., this terminal is not
Output, such as Fig. 9.
(9) test mode
When instrument is in wait state, test mode can be entered by start key, now high voltage output terminal output is set
Test voltage, LCD display show voltage output value, insulating resistance value and test count down time.Display such as Figure 10.
State after setting completed, is tested, by start key, now into test mode, and low voltage outlet terminals output is set
Determine voltage.
When test is carried out, output voltage numerical value can be changed immediately by pressing increasing key or subtracting key.
After test terminates, low voltage outlet terminals close output automatically, while siren creaks, to represent by test,
Start key can be pressed again to continue test.
If test will stop test in carrying out, by stop key, tester can stop output.Return to wait state.
To proceed test, please by start key, test will be restarted.
If causing test crash because determinand insulaion resistance is too small, low voltage outlet terminals stop output, siren report
Alert three sound, insulating resistance value during display module display failure, alarm can be now exited by stop key, wait state is returned to,
Such as to continue test by start key.
If testing insulating resistance value is more than range 1000M Ω, display module can show OL.
As one embodiment of the present of invention：The method of testing of D.C. isolation impedance when a kind of electric wire of the present invention is long
And device, the device requirement in laboratory can not only be met, is fast and accurately measured, testing efficiency, Enhancement test is improved
The capacity of equipment of room, and the innovation ability of lab assistant can be lifted, the technical capability of Enhancement test room can be carried energetically
Inspection and quarantining for import/export detection technique level is risen, technical support and technical guarantee are provided for inspection and quarantine.
The general principle and principal character and advantages of the present invention of the present invention has been shown and described above, for this area skill
For art personnel, it is clear that the invention is not restricted to the details of above-mentioned one exemplary embodiment, and without departing substantially from the present invention spirit or
In the case of essential characteristic, the present invention can be realized in other specific forms.Therefore, all should be by no matter from the point of view of which point
Embodiment regards exemplary as, and be it is nonrestrictive, the scope of the present invention by appended claims rather than on state
It is bright to limit, it is intended that all changes fallen in the implication and scope of the equivalency of claim are included in the present invention
It is interior.
Moreover, it will be appreciated that although the present specification is described in terms of embodiments, not each embodiment is only wrapped
Containing an independent technical scheme, this narrating mode of specification is only that for clarity, those skilled in the art should
Using specification as an entirety, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
It may be appreciated other embodiment.
Claims (6)
- The method of testing of D.C. isolation impedance when 1. a kind of electric wire is long, it is characterised in that：Including：Relevant criterion both domestic and external and technical data are collected, and is analyzed and researched；Test device is determined, test device uses Digital Circuit Control；According to design, research test device realization method and system is integrated；Verification experimental verification is carried out using test device, is further improved and optimizes, finally verify its reasonability and reliability, most After draw data.
- The method of testing of D.C. isolation impedance when 2. a kind of electric wire according to claim 1 is long, it is characterised in that：Really Determine test device, test device is included using the specific steps of Digital Circuit Control：In test device of the selection with power module, interface module, control and alarm module and display module, process of the test Using Digital Circuit Control test device, D.C. isolation impedance is tested when long to electric wire.
- The method of testing of D.C. isolation impedance when 3. a kind of electric wire according to claim 1 is long, it is characterised in that：Institute State according to design, the integrated step of research test device realization method and system includes：Optimized from satisfactory hardware and further integrated, make the hardware of test device on the basis for realizing function Upper simplification, increases the reliability of hardware capability, and on the basis of reliability is able to guarantee, optimizes equipment operation mode, simplifies Test procedure.
- The test device of D.C. isolation impedance when 4. a kind of electric wire is long, it is characterised in that：Including：Power module, for power input, is 220Vac inputs, includes fuse and backup fuse；Interface module, is made up of low voltage outlet terminals, high voltage output terminal, ground terminal and serial line interface；Control and alarm module, are made up of control button and siren, for controlling test mode and alarm；Display module, is a kind of 16*2 Character Mode LCDs.
- The test device of D.C. isolation impedance when 5. a kind of electric wire according to claim 4 is long, it is characterised in that：Institute Serial line interface is stated for the standards of RS -232, baud rate is 9600, serial communication frame agreement：One start bit, eight bit data position, one Position stop position totally ten frames.
- The test device of D.C. isolation impedance when 6. a kind of electric wire according to claim 4 is long, it is characterised in that：Institute Stating control button includes：Stop key, it is a kind of red without lock button, when test failure is alarmed, alarm can be closed and enter wait state； In test process, can also as interrupt test switch；Start key, a kind of green without lock button, indicator lamp is contained in inside simultaneously, can be used as the starting switch tested；Set key, for entering setting state, parameter setting is carried out in the state of setting；Subtract key, in the state of setting, being used as parameter values enter key；Output voltage down key is used as in test process；Increase key, in the state of setting, being used as parameter values enter key；In test process key is raised as output voltage；ESC Escape, status function key is set for leaving.
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| CN201710076780.1A CN107064636A (en) | 2017-02-13 | 2017-02-13 | The method of testing and device of D.C. isolation impedance when a kind of electric wire is long |
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| CN201710076780.1A CN107064636A (en) | 2017-02-13 | 2017-02-13 | The method of testing and device of D.C. isolation impedance when a kind of electric wire is long |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111398784A (en) * | 2020-03-31 | 2020-07-10 | 北京邮电大学 | Electrochemical migration-based insulation failure simulation detection method for dust-polluted circuit board |
| CN114113923A (en) * | 2021-09-23 | 2022-03-01 | 青岛海关技术中心 | Long-time direct-current insulation impedance testing method and device for flexible wire for decorative lighting loop |
-
2017
- 2017-02-13 CN CN201710076780.1A patent/CN107064636A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111398784A (en) * | 2020-03-31 | 2020-07-10 | 北京邮电大学 | Electrochemical migration-based insulation failure simulation detection method for dust-polluted circuit board |
| CN114113923A (en) * | 2021-09-23 | 2022-03-01 | 青岛海关技术中心 | Long-time direct-current insulation impedance testing method and device for flexible wire for decorative lighting loop |
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