CN206440768U - D.C. isolation impedance test device when a kind of electric wire is long - Google Patents
D.C. isolation impedance test device when a kind of electric wire is long Download PDFInfo
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- CN206440768U CN206440768U CN201720128506.XU CN201720128506U CN206440768U CN 206440768 U CN206440768 U CN 206440768U CN 201720128506 U CN201720128506 U CN 201720128506U CN 206440768 U CN206440768 U CN 206440768U
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Abstract
The utility model discloses a kind of electric wire it is long when D.C. isolation impedance test device, including casing and the tester body in casing, tester body includes：One is embedded at master board in casing, and the relay board electrically connected with master board；An auxiliary control panel is additionally provided with to electrically connect with master board；Relay board is provided with interface module, and interface module includes low voltage outlet terminals, high voltage output terminal, ground terminal and serial line interface；Master board is provided with 220Vac, the power module for power input, the control module for controlling test mode and display module；Fuse and backup fuse are provided with the power module；Control panel is aided in be provided with alarm module.The utility model provide it is a kind of can test electric wire it is long when D.C. isolation impedance device.
Description
Technical field
The utility model is related to electric wire field, and in particular to D.C. isolation testing impedance dress when a kind of electric wire is long
Put.
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 450/750 V–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 experimental rig 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 450/750 V–Part 5: Flexible cables(cords)》4.4.2 in
Regulation, 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
Nacl solution in, then the length that electric wire two ends are stayed in outside solution about 250mm connects the negative pole of 220V direct current
Onto the conductor of sample, positive pole is connected to the copper electrode of an immersion solution, tests 240h.It is required that being insulated not 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.
Utility model content
The utility model provide it is a kind of can test electric wire it is long when D.C. isolation impedance device.
In order to achieve the above object, the utility model has following technical scheme：
D.C. isolation impedance test device when a kind of electric wire of the utility model is long, including casing and in casing
Tester body, the tester body includes：
One is embedded at master board in casing, and the relay board electrically connected with the master board；It is additionally provided with an auxiliary
Control panel is electrically connected with master board；
The relay board be provided with interface module, the interface module include low voltage outlet terminals, high voltage output terminal,
Ground terminal and serial line interface；
The master board is provided with 220Vac, the power module for power input, the control for controlling test mode
Molding block and display module；Fuse and backup fuse are provided with the power module；
The auxiliary control panel is provided with alarm module.
Alternatively, the serial line interface baud rate is 9600, serial communication frame totally ten frames, respectively one start bit,
Eight bit data position, a stop position.
Alternatively, the control module is electrically connected with the operating key on casing；Operating key includes start key with stopping
Key, parameter setting key and ESC Escape.
Alternatively, the side wall of the casing is provided with heat emission hole.
Due to taking above technical scheme, the utility model has the advantage of：
The test device of D.C. isolation impedance, can not only meet the device requirement in laboratory when a kind of electric wire is long,
Fast and accurately measure, improve testing efficiency, the capacity of equipment of Enhancement test room, and lab assistant can be lifted
Innovation ability, the technical capability of Enhancement test room can lift inspection and quarantining for import/export detection technique level energetically, to examine inspection
Epidemic disease provides technical support and technical guarantee.
Brief description of the drawings
Fig. 1 is the utility model structure front view；
Fig. 2 is the utility model structure rearview；
Fig. 3 is each module connection block diagram of the utility model.
Embodiment
Implement to be used to illustrate the utility model below, but be not limited to scope of the present utility model.
D.C. isolation impedance test device when a kind of electric wire of the present embodiment is long, referring to shown in Fig. 1~Fig. 3, including
Casing and the tester body in casing, tester body include：One is embedded at master board 10 in casing, and and master control
The relay board 9 that making sheet 10 is electrically connected；An auxiliary control panel 11 is additionally provided with to electrically connect with master board 10；Set on relay board 9
Have an interface module, interface module includes lead-out terminal 7, respectively low voltage outlet terminals, high voltage output terminal, ground terminal and
Serial line interface；Master board 10 is provided with 220Vac, the power module for power input, the control for controlling test mode
Module and display module 1, power module are controlled by power switch key 5；Fuse and backup fuse are provided with power module；
Display module 1 is a kind of 16*2 Character Mode LCDs.Control panel 11 is aided in be provided with alarm module.Casing is provided with radiating
Hole 8.
Wherein, the baud rate of serial line interface 6 is 9600, serial communication frame totally ten frames, respectively one start bit, eight-digit number
According to position, a stop position.
Control module is electrically connected with the operating key on casing；Control button includes：
Stop key 2, 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 3, a kind of green without lock button, indicator lamp is contained in inside simultaneously, can be used as the starting switch tested；
Set key 4, 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.
When actual use, each parameter is set by the test device of electric wire D.C. isolation impedance when long：
(1) wait state is shown
During start, tester enters standing-by state, and display is all setting numerical value；
(2) test group sets state
Enter test group by set key in the wait state and state is set；
(3) testing procedure sets state
Enter testing procedure by set key under test group setting state and state is set, press and subtract key or increase key key and can change
Testing procedure, one has 6 steps, and test is proceeded by from current procedures after being provided with, until test terminates；
(4) item setup state
Set key is pressed under testing procedure setting state and presses to subtract key or increase key key into item setup state can change survey
Examination project；
(5) test voltage sets state
Continue to press set key, state is set into voltage, output voltage values can be changed by pressing to subtract key or increase key key.
(6) resistance sets state
Continue to press set key, state is set into resistance, test resistance low alarm setting value can be changed by pressing to subtract key or increase key key；
(7) testing time sets state
Continue to press set key, state is set into resistance, test time delay 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.L:Represent output
Low level, H represents to export high level.O represented to be output as sky, i.e., this terminal is not exported.
(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.
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.
Obviously, above-described embodiment of the present utility model is only intended to clearly illustrate the utility model example, and
It is not the restriction to embodiment of the present utility model.For those of ordinary skill in the field, in described above
On the basis of can also make other changes in different forms.Here all embodiments can not be exhaustive.
It is every to belong to obvious changes or variations that the technical solution of the utility model extends out still in of the present utility model
The row of protection domain.
Claims (4)
- D.C. isolation impedance test device when 1. a kind of electric wire is long, it is characterised in that including casing and in casing Tester body, the tester body includes：One is embedded at master board in casing, and the relay board electrically connected with the master board；An auxiliary control panel is additionally provided with to electrically connect with master board；The relay board is provided with interface module, and the interface module includes low voltage outlet terminals, high voltage output terminal, ground connection Terminal and serial line interface；The master board is provided with 220Vac, the power module for power input, the control mould for controlling test mode Block and display module；Fuse and backup fuse are provided with the power module；The auxiliary control panel is provided with alarm module.
- D.C. isolation impedance test device when 2. electric wire according to claim 1 is long, it is characterised in that described serial Interface baud rate is 9600, serial communication frame totally ten frames, respectively one start bit, eight bit data position, a stop position.
- D.C. isolation impedance test device when 3. electric wire according to claim 1 is long, it is characterised in that the control Module is electrically connected with the operating key on casing；Operating key includes start key and stop key, parameter setting key and ESC Escape.
- D.C. isolation impedance test device when 4. the electric wire described in claim 1 is long, it is characterised in that the side of the casing Wall is provided with heat emission hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720128506.XU CN206440768U (en) | 2017-02-13 | 2017-02-13 | D.C. isolation impedance test device when a kind of electric wire is long |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720128506.XU CN206440768U (en) | 2017-02-13 | 2017-02-13 | D.C. isolation impedance test device when a kind of electric wire is long |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206440768U true CN206440768U (en) | 2017-08-25 |
Family
ID=59634034
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720128506.XU Active CN206440768U (en) | 2017-02-13 | 2017-02-13 | D.C. isolation impedance test device when a kind of electric wire is long |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206440768U (en) |
-
2017
- 2017-02-13 CN CN201720128506.XU patent/CN206440768U/en active Active
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