CN104133087A - Method and device for antenna feeder surge protective device auxiliary testing - Google Patents
Method and device for antenna feeder surge protective device auxiliary testing Download PDFInfo
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- CN104133087A CN104133087A CN201410417543.3A CN201410417543A CN104133087A CN 104133087 A CN104133087 A CN 104133087A CN 201410417543 A CN201410417543 A CN 201410417543A CN 104133087 A CN104133087 A CN 104133087A
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Abstract
The invention relates to a method and device for antenna feeder surge protective device auxiliary testing. An antenna feeder surge protective device is firstly and directly placed on an auxiliary testing device or placed on the auxiliary testing device through a convertor, a left terminal and a right terminal are connected with testing holes of an anti-thunder element tester, the using state of a selector switch is set, then a testing pen connected to a testing terminal is in contact with a core and an outer shell of the antenna feeder surge protective device, voltage reading of a display screen of the anti-thunder element tester is observed, and the on-off performance and voltage parameters of the antenna feeder surge protective device are tested. By means of the method and device, operation is rapid and easy to use, the number of times of operation can be decreased, misoperation can be effectively prevented, the error rate is decreased, the work efficiency is improved, and the method and device belong to the field of anti-thunder element auxiliary testing.
Description
Technical field
The present invention relates to auxiliary test methods and the device of lightning protection component, be specifically related to method and device that a kind of auxiliary antenna feeder Surge Protector carries out break-make performance and voltage parameter test, belong to lightning protection electrical equipment field tests.
Background technology
Existing antenna feeder Surge Protector is mainly used to lightning protection and earial drainage, is contained between main feeder and indoor super soft wire jumper, and its ground wire passed line window and draws outdoorly, is connected or directly accesses earth mat with tower body, stopped thunder and lightning and invaded from main feeder.From antenna for base station, introducing the feeder line of machine room all wants a kind of Surge Protector in parallel to ground wire.Like this, when the superpotential ripple of distant place thunderbolt generation is invaded along feeder line, Surge Protector can, by this overvoltage pulse wavelength-division inflow place, be dissolved all infringements of lightning current.
The action key of antenna feeder Surge Protector is that very large lightning current is conducting to ground, thereby greatly reduces the lightning current that arrives NodeB.In existing Surge Protector test process, generally use multimeter and lightning protection component tester test pencil mutually to exchange and test.First with multimeter to Surge Protector carry out shell to core, core to core, the break-make performance test of shell to shell; with lightning protection component tester, Surge Protector is carried out to core to shell, the positive and negative voltage parameter test of shell to core, to guarantee the integrity of the Performance and quality of its Surge Protector again.
Because the core of antenna feeder Surge Protector is little, the smooth surface of core, and the spacing of core and shell is also little; While using two test pencils to carry out cross-beta simultaneously, two hands should be used two test pencils to test, hold again antenna feeder Surge Protector and do not allow it move or rotate, easily occur that test pencil skids on the core body of antenna feeder Surge Protector, has increased difficulty to operation; Also easily occur that pin touches core body and the shell of antenna feeder Surge Protector simultaneously, the situation of the test that makes the mistake.In sum, while testing with two test pencils, the number of times of operation is loaded down with trivial details, and efficiency is low; Inconvenient operation, operation easier are large, easily make mistakes; To test process, brought very large trouble, and test result is difficult to guarantee, the working time is wasted in a large number.
Summary of the invention
The technical problem to be solved in the present invention is:
1. when pair Surge Protector carries out the test of break-make performance and voltage parameter, reduce the number of times of operation, increase work efficiency;
2. reduce the difficulty of operation, effectively prevent maloperation, reduce error rate; Allow operation become simple and easy, further increase work efficiency;
3. reduce the workload of J type interface maintenance in auxiliary test unit and the difficulty of maintenance.
Pin is with the problems referred to above, the technical scheme that the present invention proposes is: for the method for antenna feeder Surge Protector subtest, first antenna feeder Surge Protector is directly placed on auxiliary test unit or by converter and is placed on auxiliary test unit, again left terminal is connected with the instrument connection of lightning protection component tester with right terminal, the use state of change-over switch is set, then with the core body and the shell that are connected to the test pen contact antenna feeder Surge Protector on calibrating terminal, and the voltage readings of observing the display screen of lightning protection component tester, break-make performance and voltage parameter to antenna feeder Surge Protector are tested.
Further, the use state of described change-over switch has two kinds, the first, and front end button is pressed, and it two is that rear end button is pressed; When the front end button of change-over switch is pressed, left terminal is connected with J core body, and right terminal is connected with J type shell; When the rear end button of change-over switch is pressed, left terminal is connected with J type shell, and right terminal is connected with J core body; But calibrating terminal and change-over switch do not have direct annexation, but remain and be connected with left terminal.
Further, the K type interface of antenna feeder Surge Protector is placed on while testing on the J type interface of auxiliary test unit, can makes the J core body of J type interface be connected with the K core body of K type interface; And the J type shell of J type interface and the K type shell of K type interface are connected.
Further; while testing on the J type interface that the J type interface of antenna feeder Surge Protector will be placed on to auxiliary test unit; the converter that will by two ends be all first K type interface is placed on the J type interface of auxiliary test unit, then the J type interface of antenna feeder Surge Protector is placed on converter and could be successfully tested.
Further, the anodal instrument connection of the left terminal on auxiliary test unit and lightning protection component tester or negative pole instrument connection are connected and all allow, just corresponding, the right terminal on auxiliary test unit is connected with negative pole instrument connection or the anodal instrument connection of lightning protection component tester.
Further, one end of test pen is connected with calibrating terminal, with the test pen pointer of the test pen other end, contacts respectively core body and the shell of antenna feeder Surge Protector upper end, and the voltage readings of observing display screen; Then by change-over switch, change the connected mode of the J type interface of connection terminal and auxiliary test unit, then carry out taking turns test with test pen pointer, can complete the break-make performance of antenna feeder Surge Protector and the test of voltage parameter.
Realize the auxiliary test unit of said method, comprise lightning protection component tester and test pen, it is characterized in that, the base of auxiliary test unit is provided with box body, and change-over switch, J type interface, base plate, converter and connection terminal are housed on box body; In box body, there is wire to be connected with change-over switch J type interface, connection terminal.
Further, J type interface includes J core body, limited post, J type shell and internal thread; Change-over switch includes front end button and rear end button; Connection terminal has 3, is respectively left terminal, calibrating terminal and right terminal.
Further, between J type interface and box body, there is base plate, with screw, base plate is fixed on box body.
Further, change-over switch is double-point double-throw switch, has wire to be connected with change-over switch J type interface, connection terminal in box body, changes the use state of change-over switch, can change the connected mode of connection terminal and J type interface.
Advantage of the present invention is: Surge Protector is placed on auxiliary test unit, with a test pen, just can carry out to Surge Protector the test of break-make performance and voltage parameter, make originally two more difficult tests that complete of hand can be with an autograph letter completing just, greatly reduce the difficulty of operation, make to operate more simple and fast, improved work efficiency; Also effectively prevent maloperation, reduced error rate, made the result of test more accurate.By change-over switch, change the connected mode of the J type interface of connection terminal and auxiliary test unit, reduced the number of times of operation, thereby further improved work efficiency.The long-time auxiliary test unit that uses can be to J type interface, especially the J core body in J type interface produces certain wearing and tearing, the screw unclamping on base plate can take out base plate and J type interface, conveniently J type interface is changed, and has reduced workload and the difficulty of maintenance.
Accompanying drawing explanation
Fig. 1 is use schematic diagram of the present invention;
Fig. 2 is stereographic map of the present invention;
Fig. 3 is that two ends are all the stereographic maps of the antenna feeder Surge Protector of K type interface;
Fig. 4 is that two ends are all the stereographic maps of the antenna feeder Surge Protector of J type interface;
Fig. 5 is the front view of Fig. 4;
Fig. 6 is that Fig. 5 is along the cut-open view of A-A line;
Fig. 7 is that one end is that the K type interface other end is the stereographic map of the antenna feeder Surge Protector of J type interface;
Fig. 8 is the stereographic map of converter;
Fig. 9 is the front view of converter;
Figure 10 is the vertical view of converter;
In figure: 1 box body, 2 bases, 3 base plates, 31 screws, 4 change-over switches, 41 front end buttons, 42 rear end buttons, 5; J type interface, 51; J core body, 52 limited posts, 53; J type shell, 531; J type internal thread, 6 connection terminals, 61 left terminal, 62 calibrating terminals, 63 right terminal, 7; K type interface, 71; K core body, 72; K type shell, 721, K type external thread, 8 antenna feeder Surge Protectors, 81 protector outer casings, 9 lightning protection component testers, 91 anodal instrument connections, 92 negative pole instrument connections, 93 display screens, 10 test pens, 101 test pen pointers.
Specific embodiment
Below in conjunction with embodiment and accompanying drawing, the present invention is done to the description of a step:
Embodiment mono-
As shown in Fig. 1 Fig. 2 and Fig. 3, for the device of antenna feeder Surge Protector subtest, base 2 is provided with box body 1, and change-over switch 4, J type interface 5, base plate 3 and connection terminal 6 are housed on box body 1.Wherein, change-over switch 4 includes front end button 41 and rear end button 42; J type interface 5 includes J core body 51, limited post 52, J type shell 53, J type internal thread 531; Connection terminal 6 is comprised of left terminal 61, calibrating terminal 62, right terminal 63.Base plate 3 is to be fixed on box body 1 with screw 31, and unclamping screw 31 can split out base plate 3, thereby J type interface 5 is split out, and conveniently J type interface 5 is changed.
In box body 1, there is wire to be connected J type interface 5, connection terminal 6 and change-over switch 4, change the use state of change-over switch 4, can change the connected mode of connection terminal 6 and J type interface 5.Change-over switch 4 is double-point double-throw switch, and the use state of change-over switch 4 has two kinds, the first, and front end button 41 is pressed; It two is that rear end button 42 is pressed.When the front end button 41 of change-over switch 4 is pressed, left terminal 61 is connected with J core body 51, and right terminal 63 is connected with J type shell 53; When the rear end button 42 of change-over switch 4 is pressed, left terminal 61 is connected with J type shell 53, and right terminal 63 is connected with J core body 51; But calibrating terminal 62 does not have direct annexation with change-over switch 4, but remains and be connected with left terminal 61.
Respectively there is a K type interface 7 at antenna feeder Surge Protector 8 two ends to be tested, and K type interface 7 includes K core body 71, K type shell 72, K type external thread 721.Protector outer casing 81 is the integral body being connected with the K type shell 72 at two ends.
The content of testing is: core to core, shell to shell, core to shell, shell to the break-make performance of core and the test of voltage parameter.Wherein, core refers to K core body 71; Core refers to core: the K core body 71 of antenna feeder Surge Protector 8 upper ends and the connection state of the K core body 71 of lower end.Shell refers to K type shell 72, and shell refers to shell: the K type shell 72 of antenna feeder Surge Protector 8 upper ends and the connection state of the K type shell 72 of lower end.Core refers to shell: the K core body 71 of antenna feeder Surge Protector 8 any one end and the connection state of the K type shell 72 of any one end.Shell refers to core: the K type shell 72 of antenna feeder Surge Protector 8 any one end and the connection state of the K core body 71 of any one end.
The step of test:
In brief, the step of test is:
Step I: after each electronic component is connected, set predeterminated voltage, press the front end button 41 of change-over switch 4;
Step I i: with test pen pointer 101, contact respectively K core body 71 and the K type shell 72 of antenna feeder Surge Protector 8 upper ends, and the voltage readings of observing display screen 93;
Step I ii: press again the rear end button 42 of change-over switch 4, repeating step ii mono-time.
Concrete testing procedure and principle are as follows:
Step 1, is placed on the K type interface 7 of antenna feeder Surge Protector 8 on the J type interface 5 of auxiliary test unit, allows K core body 71 be connected with J core body 51; K type shell 72 is connected with J type shell 53.Mostly in situation, because limited post 52 can well wrap up K core body 71, so J core body 51 and limited post 52 can together with prevent the loosening of antenna feeder Surge Protector 8, need not tighten antenna feeder Surge Protector 8 and just can test; If but loose contact between K type interface 7 and J type interface 5 can be tightened antenna feeder Surge Protector 8 the K type external thread 721 of antenna feeder Surge Protector 8 and the J type internal thread 531 of auxiliary test unit are closely connected, then be tested.
Step 2, is connected left terminal 61 with wire with the negative pole instrument connection 92 of lightning protection component tester 9, then with wire, right terminal 63 is connected with the anodal instrument connection 91 of lightning protection component tester 9.During test, do not have being connected between connection terminal and instrument connection both positive and negative polarity minute, that is to say with wire left terminal 61 be connected with anodal instrument connection 91, then with wire, right terminal 63 is connected and is also fine with negative pole instrument connection 92.
Step 3, is connected calibrating terminal 62 with wire with test pen 10.
Step 4, switches on power lightning protection component tester 9, sets predeterminated voltage.
Step 5, presses the front end button 41 of change-over switch 4.Owing to there being wire to be connected J type interface 5, connection terminal 6 and change-over switch 4 in box body 1, and change-over switch 4 is double-point double-throw switch, so when front end button 41 is pressed: the wire in box body 1 can be connected left terminal 61 with J core body 51; Right terminal 63 is connected with J type shell 53.But because calibrating terminal 62 and change-over switch 4 do not have direct annexation, but remain and be connected with left terminal 61, so now calibrating terminal 62 is to be connected with J core body 51.
Step 6, the K core body 71 of the K type interface 7 of use test pen pointer 101 contact antenna feeder Surge Protector 8 upper ends, the voltage readings of observing the display screen 93 of lightning protection component tester 9.Described in step 5; because calibrating terminal 62 is now to be connected with J core body 51; so now test pen pointer 101 is connected with J core body 51; and J core body 51 is to be connected with the K core body 71 that contacts antenna feeder Surge Protector 8 lower ends; therefore the K core body 71 of test pen pointer 101 contact antenna feeder Surge Protector 8 upper ends, has also just completed core between the K core body 71 of antenna feeder Surge Protector 8 lower ends and the K core body 71 of upper end to the break-make performance of core and the test of voltage parameter.
Step 7, the K type shell 72 of the K type interface 7 of use test pen pointer 101 contact antenna feeder Surge Protector 8 upper ends, the voltage readings of observing the display screen 93 of lightning protection component tester 9.With step 6 in like manner: test pen pointer 101 is to be now connected with the K core body 71 of antenna feeder Surge Protector 8 lower ends.So this step can complete core between the K core body 71 of antenna feeder Surge Protector 8 lower ends and the K type shell 72 of upper end to the break-make performance of shell and the test of voltage parameter.
Step 8, presses the rear end button 42 of change-over switch 4, as shown in Figure 3.Owing to there being wire to be connected J type interface 5, connection terminal 6 and change-over switch 4 in box body 1, and change-over switch 4 is double-point double-throw switch, so when rear end button 42 is pressed: the wire in box body 1 can be connected left terminal 61 with J type shell 53; Right terminal 63 is connected with J core body 51.But because calibrating terminal 62 and change-over switch 4 do not have direct annexation, but remain and be connected with left terminal 61, so now calibrating terminal 62 is to be connected with J type shell 53.
Step 9, the K type shell 72 of the K type interface 7 of use test pen pointer 101 contact antenna feeder Surge Protector 8 upper ends, the voltage readings of observing the display screen 93 of lightning protection component tester 9.Described in step 8; because calibrating terminal 62 is now to be connected with J type shell 53; so now test pen pointer 101 is connected with J type shell 53; and J type shell 53 is to be connected with the K type shell 72 of antenna feeder Surge Protector 8 lower ends; therefore the K type shell 72 of test pen pointer 101 contact antenna feeder Surge Protector 8 upper ends, has also just completed shell between the K type shell 72 of antenna feeder Surge Protector 8 lower ends and the K type shell 72 of upper end to the break-make performance of shell and the test of voltage parameter.
Step 10, the K core body 71 of the K type interface 7 of use test pen pointer 101 contact antenna feeder Surge Protector 8 upper ends, the voltage readings of observing the display screen 93 of lightning protection component tester 9.With step 9 in like manner: test pen pointer 101 is to be now connected with the K type shell 72 of antenna feeder Surge Protector 8 lower ends.So this step can complete the K type shell 72 of antenna feeder Surge Protector 8 lower ends and the shell between the K core body 71 of upper end to the break-make performance of core and the test of voltage parameter.
Although different predeterminated voltage values and the antenna feeder Surge Protector 8 of different model; at the core that carries out step 7 to shell and step 10 shell during to the test of core; the voltage readings of display screen 93 can be different; but at the core that carries out step 6 to the shell of core and step 9 during to the test of shell, the voltage readings of display screen 93 all should for 0 be only normal.In test process, by observing the voltage readings of display screen 93, just can whether normally judge the break-make performance of antenna feeder Surge Protector 8 and voltage parameter.
Embodiment bis-
Due to the interface of auxiliary test unit J type interface 5 always; so run into the antenna feeder Surge Protector 8 that two ends are all also J type interfaces 5; just can not directly antenna feeder Surge Protector 8 be placed on auxiliary test unit; but will be all the converter of K type interface 7 by two ends, just can connect and test.Specific practice is first converter (as shown in Fig. 8 Fig. 9 and Figure 10) to be placed on the J type interface 5 of auxiliary test unit, then the J type interface 5 of antenna feeder Surge Protector 8 is placed on converter and could be tested smoothly.
While using converter to test: the K core body 71 at converter two ends connects respectively the J core body 51 of auxiliary test unit and the J core body 51 of antenna feeder Surge Protector 8, and makes its complete conducting; The K type shell 72 at converter two ends connects respectively the J type shell 53 of auxiliary test unit and the J type shell 53 of antenna feeder Surge Protector 8, and makes its complete conducting.
The testing procedure that the present embodiment is follow-up and principle are identical with enforcement one, omit follow-up testing procedure and the principle of the present embodiment.
Embodiment tri-
As shown in Figure 7, for one end, be that K type interface 7 other ends are that the antenna feeder Surge Protector 8 of J type interface 5 is when test, can not use converter, K type interface 7 these one end of antenna feeder Surge Protector 8 are directly placed on the J type interface 5 on auxiliary test unit and are tested; Also can use converter, first converter is placed on the J type interface 5 of auxiliary test unit, then the J type interface 5 of antenna feeder Surge Protector 8 is placed on converter and is tested.
While using converter to test: the K core body 71 at converter two ends connects respectively the J core body 51 of auxiliary test unit and the J core body 51 of antenna feeder Surge Protector 8, and makes its complete conducting; The K type shell 72 at converter two ends connects respectively the J type shell 53 of auxiliary test unit and the J type shell 53 of antenna feeder Surge Protector 8, and makes its complete conducting.
The testing procedure that the present embodiment is follow-up and principle are identical with enforcement one, omit follow-up testing procedure and the principle of the present embodiment.
Obviously, do not departing under the prerequisite of principle of the present invention, some improvement of making or modification all should be considered as protection scope of the present invention.
Claims (10)
1. for the method for antenna feeder Surge Protector subtest; it is characterized in that; first antenna feeder Surge Protector is directly placed on auxiliary test unit or by converter and is placed on auxiliary test unit; again left terminal is connected with the instrument connection of lightning protection component tester with right terminal; the use state of change-over switch is set; then with the core body and the shell that are connected to the test pen contact antenna feeder Surge Protector on calibrating terminal; and the voltage readings of observing the display screen of lightning protection component tester, break-make performance and the voltage parameter of antenna feeder Surge Protector are tested.
2. the method for antenna feeder Surge Protector subtest according to claim 1, is characterized in that, the use state of described change-over switch has two kinds, the first, and front end button is pressed, and it two is that rear end button is pressed; When the front end button of change-over switch is pressed, left terminal is connected with J core body, and right terminal is connected with J type shell; When the rear end button of change-over switch is pressed, left terminal is connected with J type shell, and right terminal is connected with J core body; But calibrating terminal and change-over switch do not have direct annexation, but remain and be connected with left terminal.
3. the method for antenna feeder Surge Protector subtest according to claim 1, it is characterized in that, the K type interface of antenna feeder Surge Protector is placed on while testing on the J type interface of auxiliary test unit, can makes the J core body of J type interface be connected with the K core body of K type interface; And the J type shell of J type interface and the K type shell of K type interface are connected.
4. the method for antenna feeder Surge Protector subtest according to claim 1; it is characterized in that; while testing on the J type interface that the J type interface of antenna feeder Surge Protector will be placed on to auxiliary test unit; the converter that will by two ends be all first K type interface is placed on the J type interface of auxiliary test unit, then the J type interface of antenna feeder Surge Protector is placed on converter and could be successfully tested.
5. the method for antenna feeder Surge Protector subtest according to claim 1; it is characterized in that; the anodal instrument connection of the left terminal on auxiliary test unit and lightning protection component tester or negative pole instrument connection are connected and all allow; just corresponding, the right terminal on auxiliary test unit is connected with negative pole instrument connection or the anodal instrument connection of lightning protection component tester.
6. according to the method for antenna feeder Surge Protector subtest described in claim 1 and 2, it is characterized in that, one end of test pen is connected with calibrating terminal, with the test pen pointer of the test pen other end, contact respectively core body and the shell of antenna feeder Surge Protector upper end, and the voltage readings of observing display screen; Then by change-over switch, change the connected mode of the J type interface of connection terminal and auxiliary test unit, then carry out taking turns test with test pen pointer, can complete the break-make performance of antenna feeder Surge Protector and the test of voltage parameter.
7. realize the auxiliary test unit of said method, comprise lightning protection component tester and test pen, it is characterized in that, the base of auxiliary test unit is provided with box body, and change-over switch, J type interface, base plate, converter and connection terminal are housed on box body; In box body, there is wire to be connected with change-over switch J type interface, connection terminal.
8. auxiliary test unit according to claim 7, is characterized in that, J type interface includes J core body, limited post, J type shell and internal thread; Change-over switch includes front end button and rear end button; Connection terminal has 3, is respectively left terminal, calibrating terminal and right terminal.
9. auxiliary test unit according to claim 7, is characterized in that, between J type interface and box body, has base plate, with screw, base plate is fixed on box body.
10. auxiliary test unit according to claim 7, it is characterized in that, change-over switch is double-point double-throw switch, has wire to be connected with change-over switch J type interface, connection terminal in box body, change the use state of change-over switch, can change the connected mode of connection terminal and J type interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410417543.3A CN104133087B (en) | 2014-08-22 | 2014-08-22 | For the method and device of antenna feeder Surge Protector subtest |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410417543.3A CN104133087B (en) | 2014-08-22 | 2014-08-22 | For the method and device of antenna feeder Surge Protector subtest |
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| Publication Number | Publication Date |
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| CN104133087A true CN104133087A (en) | 2014-11-05 |
| CN104133087B CN104133087B (en) | 2017-04-05 |
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| CN201410417543.3A Active CN104133087B (en) | 2014-08-22 | 2014-08-22 | For the method and device of antenna feeder Surge Protector subtest |
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|---|---|---|---|---|
| CN2436943Y (en) * | 2000-06-27 | 2001-06-27 | 孙宗翰 | Tester for action current of electricity leakage protector |
| CN101359017A (en) * | 2007-07-31 | 2009-02-04 | 上海电气自动化设计研究所有限公司 | Detecting system for resistance current of passive lightning arrester |
| CN202651885U (en) * | 2012-04-09 | 2013-01-02 | 孙巍巍 | Detectable surge protector |
| US20130083441A1 (en) * | 2011-09-30 | 2013-04-04 | Sankosha Corporation | Lightning surge detector, surge protective device, and management system for surge protective device |
| CN103033702A (en) * | 2012-12-03 | 2013-04-10 | 桂林赛普电子科技有限公司 | Multi-functional handheld tester of lighting protection device |
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2014
- 2014-08-22 CN CN201410417543.3A patent/CN104133087B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2436943Y (en) * | 2000-06-27 | 2001-06-27 | 孙宗翰 | Tester for action current of electricity leakage protector |
| CN101359017A (en) * | 2007-07-31 | 2009-02-04 | 上海电气自动化设计研究所有限公司 | Detecting system for resistance current of passive lightning arrester |
| US20130083441A1 (en) * | 2011-09-30 | 2013-04-04 | Sankosha Corporation | Lightning surge detector, surge protective device, and management system for surge protective device |
| CN202651885U (en) * | 2012-04-09 | 2013-01-02 | 孙巍巍 | Detectable surge protector |
| CN103033702A (en) * | 2012-12-03 | 2013-04-10 | 桂林赛普电子科技有限公司 | Multi-functional handheld tester of lighting protection device |
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Address after: 412007 Tianyuan District, Hunan City, small and medium enterprises to promote Park, building A5 Applicant after: Hunan Zhongpu Lightning Co., Ltd. Address before: 412007 Tianyuan District, Hunan City, small and medium enterprises to promote Park, building A5 Applicant before: Zhuzhou Putian Zhongpu Lightning Protection Technology Co., Ltd. |
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