CN202929189U - Zinc oxide arrester detector checking apparatus - Google Patents
Zinc oxide arrester detector checking apparatus Download PDFInfo
- Publication number
- CN202929189U CN202929189U CN 201220679519 CN201220679519U CN202929189U CN 202929189 U CN202929189 U CN 202929189U CN 201220679519 CN201220679519 CN 201220679519 CN 201220679519 U CN201220679519 U CN 201220679519U CN 202929189 U CN202929189 U CN 202929189U
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- checking circuit
- milliammeter
- throw switch
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Abstract
The utility model discloses a zinc oxide arrester detector checking apparatus and relates to the technical field of devices for measuring electrical variable. The zinc oxide arrester detector checking apparatus comprises a counter checking circuit and a milliammeter checking circuit. An input end of the apparatus is connected with a movable end of a double-pole-double-throw switch K1. A fixed end of the double-pole-double-throw switch K1 is connected with a fixed end of a double-pole-double-throw switch K2 through the counter checking circuit. The other fixed end of the double-pole-double-throw switch K1 is connected with the other fixed end of the double-pole-double-throw switch K2 through the milliammeter checking circuit. A movable end of the double-pole-double-throw switch K2 is an output end of the apparatus. The apparatus comprises the counter checking circuit and the milliammeter checking circuit, integrating two functions of motion performance testing and amperemeter error testing into one. Thus, the apparatus can be used to check whether an arrester operates and check whether an amperemeter indicates correctly. The apparatus has characteristics of simple structure and powerful functions.
Description
Technical field
The utility model relates to the device technique field of measuring electric variable.
Background technology
Zinc-Oxide Arrester is the lightning arrester with good protection performance, utilizes the good non-linear volt-ampere characteristic of zinc paste, makes the electric current that flows through lightning arrester when normal working voltage minimum (microampere or milliampere level); When the superpotential effect, resistance sharply descends, and the superpotential energy of releasing reaches the effect of protection.The difference of this lightning arrester and traditional lightning arrester is that it does not have discharging gap, the effect that utilizes the nonlinear characteristic of zinc paste to play earial drainage and cut-off.
Lightning arrester monitor and lightning arrester are serially connected with in electrical network and move, with the number of times that records lightning arrester discharge action and the situation of change of real time on-line monitoring leakage current of an arrester.According to the situation of change of leakage current, can judge in time in the lightning arrester operational process that Accident prevention occurs, and improves the reliability of Operation of Electric Systems because of internal wetted or the mechanical abnormal conditions that cause such as damaged.Existing high voltage substation adopts Zinc-Oxide Arrester more, and these lightning arresters and lightning arrester monitor will carry out routine test.But present means of testing can only verification lightning arrester monitor correct operation whether, can't indicate whether accurately by verification leakage current table.
The utility model content
Technical problem to be solved in the utility model is to provide a kind of detector of zinc oxide arrester calibration equipment, whether described device not only can move by the verification lightning arrester, can also indicate whether correctly by the verification reometer, thereby improved the accuracy of lightning arrester monitor test, strengthened effective maintenance of lightning arrester.
for solving the problems of the technologies described above, technical solution adopted in the utility model is: a kind of detector of zinc oxide arrester calibration equipment, it is characterized in that comprising counter checking circuit and milliammeter checking circuit, the input end of described device is connected with the moved end of double-point double-throw switch K1, one of double-point double-throw switch K1 not the moved end through counter checking circuit and double-point double-throw switch K2 one not the moved end be connected, another of double-point double-throw switch K1 not moved end is not connected the moved end through another of milliammeter checking circuit and double-point double-throw switch K2, the moved end of described double-point double-throw switch K2 is the output terminal of described device.
Preferably: the input end of described device is provided with pilot lamp L1 and resistance R 1.
preferably: described counter checking circuit comprises resistance R 2-R3, diode D1-D2 and capacitor C 1-C4, the first via of an input end of described counter checking circuit is through resistance R 3, after being connected with capacitor C, capacitor C 4 is connected with an output terminal of counter checking circuit, described input end the second the tunnel through resistance R 2, diode D1 is connected with described output terminal, the negative pole of diode D2 is connected node and is connected with diode D1 with resistance R 2, the positive pole of diode D2 is connected with described output terminal through capacitor C 2, one end of capacitor C 1 is connected with the node that resistance R 3 is connected with capacitor C, the other end of capacitor C 1 is connected with described output terminal, resistance R 3 is another input end of described counter checking circuit with the node of capacitor C 4, the node of diode D2 and capacitor C 2 is another output terminal of described counter checking circuit.
Preferably: the input end of described counter checking circuit is provided with K switch 3-K4, and output terminal is provided with K switch 5-K6.
Preferably: described milliammeter checking circuit comprises transformer T1, pressure regulator T2 and milliammeter, the elementary of described transformer T1 is the input end of described milliammeter checking circuit, the secondary of described transformer T1 is the elementary of described pressure regulator T2, described milliammeter is connected on described pressure regulator secondary, and the secondary of described pressure regulator T2 is the output terminal of described milliammeter checking circuit.
The beneficial effect that adopts technique scheme to produce is: described device comprises counter checking circuit and milliammeter checking circuit, performance test and reometer error test two functions are united two into one, by the electric capacity in the counter checking circuit is charged, with electric capacity, monitor is sparked, realize the performance test to monitor; Utilize in the milliammeter checking circuit and must apply very little voltage to monitor by pressure regulator, whether the reading that detects lightning arrester monitor leakage current table is consistent with the reading of this device milliammeter, realizes the leakage current measurement error test to monitor.Thereby not only can whether move by the verification lightning arrester, can also indicate whether correctly by the verification reometer, improved the accuracy of lightning arrester monitor test, strengthened effective maintenance of lightning arrester, and had characteristics simple in structure, powerful.
Description of drawings
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Fig. 1 is theory diagram of the present utility model;
Fig. 2 is the schematic diagram of Fig. 1 Counter checking circuit;
Fig. 3 is the schematic diagram of milliammeter checking circuit in Fig. 1;
Wherein: 1, counter checking circuit 2, milliammeter checking circuit 3, lightning arrester on-line monitoring instrument.
Embodiment
As shown in Figure 1, a kind of detector of zinc oxide arrester calibration equipment comprises counter checking circuit 1 and milliammeter checking circuit 2.The input end of described device is connected with the moved end of double-point double-throw switch K1, one of double-point double-throw switch K1 not the moved end through counter checking circuit 1 and double-point double-throw switch K2 one not the moved end be connected, another of double-point double-throw switch K1 not moved end is not connected the moved end through another of milliammeter checking circuit and double-point double-throw switch K2, the moved end of described double-point double-throw switch K2 is the output terminal of described device, the input end of described device is provided with pilot lamp L1 and resistance R 1, whether is used for display device in work.
As shown in Figure 2, described counter checking circuit 1 comprises resistance R 2-R3, diode D1-D2 and capacitor C 1-C4.the first via of an input end of described counter checking circuit is through resistance R 3, after being connected with capacitor C, capacitor C 4 is connected with an output terminal of counter checking circuit, described input end the second the tunnel through resistance R 2, diode D1 is connected with described output terminal, the negative pole of diode D2 is connected node and is connected with diode D1 with resistance R 2, the positive pole of diode D2 is connected with described output terminal through capacitor C 2, one end of capacitor C 1 is connected with the node that resistance R 3 is connected with capacitor C, the other end of capacitor C 1 is connected with described output terminal, resistance R 3 is another input end of described counter checking circuit with the node of capacitor C 4, the node of diode D2 and capacitor C 2 is another output terminal of described counter checking circuit, in order to increase the safety and reliability of described device, the input end of described counter checking circuit is provided with K switch 3-K4, output terminal is provided with K switch 5-K6.
As shown in Figure 3, described milliammeter checking circuit 2 comprises transformer T1, pressure regulator T2 and milliammeter.The elementary of described transformer T1 is the input end of described milliammeter checking circuit, the secondary of described transformer T1 is the elementary of described pressure regulator T2, described milliammeter is connected on described pressure regulator secondary, and the secondary of described pressure regulator T2 is the output terminal of described milliammeter checking circuit.
When using described device to carry out verification, at first disconnect K switch 1 and the K2 at two ends, tested lightning arrester on-line monitoring instrument is connected, when carrying out the performance test, operating switch K1 and K2 allow input end, counter checking circuit and output terminal be linked as a path, and input end is connected with the mains and can be tested, this moment, the milliammeter checking circuit was not worked; When carrying out the milliammeter verification, operating switch K1 and K2 allow input end, milliammeter checking circuit and output terminal be linked as a path, and input end is connected with the mains and can be tested, and this hour counter checking circuit is not worked.
Described device comprises counter checking circuit and milliammeter checking circuit, performance test and reometer error test two functions are united two into one, by the electric capacity in the counter checking circuit is charged, with electric capacity, monitor is sparked, realize the performance test to monitor; Utilize in the milliammeter checking circuit and must apply very little voltage to monitor by pressure regulator, whether the reading that detects lightning arrester monitor leakage current table is consistent with the reading of this device milliammeter, realizes the leakage current measurement error test to monitor.Thereby not only can whether move by the verification lightning arrester, can also indicate whether correctly by the verification reometer, improved the accuracy of lightning arrester monitor test, strengthened effective maintenance of lightning arrester, and had characteristics simple in structure, powerful.
Used specific case herein principle of the present utility model and embodiment thereof are set forth, the explanation of above embodiment is just with helping understand method of the present utility model and core concept thereof.Should be pointed out that for the person of ordinary skill of the art, can also carry out some improvement and modification to the utility model under the prerequisite that does not break away from the utility model principle, these improvement and modification also fall in the protection domain of the utility model claim.
Claims (5)
1. detector of zinc oxide arrester calibration equipment, it is characterized in that comprising counter checking circuit (1) and milliammeter checking circuit (2), the input end of described device is connected with the moved end of double-point double-throw switch K1, one of double-point double-throw switch K1 not the moved end through counter checking circuit (1) and double-point double-throw switch K2 one not the moved end be connected, another of double-point double-throw switch K1 not moved end is not connected the moved end through another of milliammeter checking circuit and double-point double-throw switch K2, and the moved end of described double-point double-throw switch K2 is the output terminal of described device.
2. a kind of detector of zinc oxide arrester calibration equipment according to claim 1, is characterized in that the input end of described device is provided with pilot lamp L1 and resistance R 1.
3. a kind of detector of zinc oxide arrester calibration equipment according to claim 1 and 2, it is characterized in that described counter checking circuit (1) comprises resistance R 2-R3, diode D1-D2 and capacitor C 1-C4, the first via of an input end of described counter checking circuit is through resistance R 3, after being connected with capacitor C, capacitor C 4 is connected with an output terminal of counter checking circuit, described input end the second the tunnel through resistance R 2, diode D1 is connected with described output terminal, the negative pole of diode D2 is connected node and is connected with diode D1 with resistance R 2, the positive pole of diode D2 is connected with described output terminal through capacitor C 2, one end of capacitor C 1 is connected with the node that resistance R 3 is connected with capacitor C, the other end of capacitor C 1 is connected with described output terminal, resistance R 3 is another input end of described counter checking circuit with the node of capacitor C 4, the node of diode D2 and capacitor C 2 is another output terminal of described counter checking circuit.
4. a kind of detector of zinc oxide arrester calibration equipment according to claim 3, is characterized in that the input end of described counter checking circuit is provided with K switch 3-K4, and output terminal is provided with K switch 5-K6.
5. a kind of detector of zinc oxide arrester calibration equipment according to claim 1 and 2, it is characterized in that described milliammeter checking circuit (2) comprises transformer T1, pressure regulator T2 and milliammeter, the elementary of described transformer T1 is the input end of described milliammeter checking circuit, the secondary of described transformer T1 is the elementary of described pressure regulator T2, described milliammeter is connected on described pressure regulator secondary, and the secondary of described pressure regulator T2 is the output terminal of described milliammeter checking circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220679519 CN202929189U (en) | 2012-12-11 | 2012-12-11 | Zinc oxide arrester detector checking apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220679519 CN202929189U (en) | 2012-12-11 | 2012-12-11 | Zinc oxide arrester detector checking apparatus |
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| Publication Number | Publication Date |
|---|---|
| CN202929189U true CN202929189U (en) | 2013-05-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220679519 Expired - Fee Related CN202929189U (en) | 2012-12-11 | 2012-12-11 | Zinc oxide arrester detector checking apparatus |
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| CN (1) | CN202929189U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102998647A (en) * | 2012-12-11 | 2013-03-27 | 衡水供电公司 | Checking device for zinc oxide arrester detector |
| CN104749545A (en) * | 2015-04-19 | 2015-07-01 | 国网青海省电力公司海东供电公司 | Lightning arrester monitor verifying device |
| CN104777444A (en) * | 2015-04-14 | 2015-07-15 | 国网辽宁省电力有限公司抚顺供电公司 | Lightning arrester discharge counter comprehensive calibration instrument and calibration method |
-
2012
- 2012-12-11 CN CN 201220679519 patent/CN202929189U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102998647A (en) * | 2012-12-11 | 2013-03-27 | 衡水供电公司 | Checking device for zinc oxide arrester detector |
| CN104777444A (en) * | 2015-04-14 | 2015-07-15 | 国网辽宁省电力有限公司抚顺供电公司 | Lightning arrester discharge counter comprehensive calibration instrument and calibration method |
| CN104777444B (en) * | 2015-04-14 | 2018-04-06 | 国网辽宁省电力有限公司抚顺供电公司 | Arrester discharge counter comprehensive calibrator and method of calibration |
| CN104749545A (en) * | 2015-04-19 | 2015-07-01 | 国网青海省电力公司海东供电公司 | Lightning arrester monitor verifying device |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130508 Termination date: 20171211 |
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| CF01 | Termination of patent right due to non-payment of annual fee |