CN201707417U - Cable on-off detector - Google Patents
Cable on-off detector Download PDFInfo
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- CN201707417U CN201707417U CN2010201865646U CN201020186564U CN201707417U CN 201707417 U CN201707417 U CN 201707417U CN 2010201865646 U CN2010201865646 U CN 2010201865646U CN 201020186564 U CN201020186564 U CN 201020186564U CN 201707417 U CN201707417 U CN 201707417U
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Abstract
The utility model provides a cable on-off detector used for testing the on-off of a cable, wherein a testing circuit is respectively connected with a charging circuit, an electric quantity display circuit and the tested cable, the charging circuit is connected to the testing circuit and used for charging a lithium battery in the testing circuit, the electric quantity display circuit is connected to the testing circuit and used for displaying the electric quantity of the lithium battery in the testing circuit, and the testing circuit is connected at two ends of the tested cable and used for testing the on-off of the tested cable under the condition of high current. By adopting a series circuit consisting of the testing circuit, a switch, an electric horn and the tested cable, testing current more than 1 amp can be supplied for the tested cable, thus improving the reliability of on-off testing.
Description
Technical field
The utility model relates to a kind of cable break-make checkout equipment, especially a kind ofly carries out the equipment that break-make detects under the high current conditions in that tested cable is being applied.
Background technology
At present, the test cable break-make generally adopts the multimeter test, and measuring current is several milliamperes to tens milliamperes, and the special-purpose on off test equipment at the communication cable design is also arranged, and measuring current is littler.Little testing current break-make is easy to generate erroneous judgement, and is different during with big electric current when the little electric current such as contact resistance.Adopt little testing current break-make if be operated in the power cable of big electric current, occur false judgment easily.
Summary of the invention
The purpose of this utility model is for solving the deficiencies in the prior art, providing a kind of to carry out the checkout equipment of cable on off test greater than 1 ampere high electric current.
The purpose of this utility model realizes by following measure, and this cable break-make detecting device is used for the break-make of cable is tested, and its test circuit connects charging circuit, electric weight display circuit, tested cable respectively.Charging circuit is connected to test circuit, is used for the lithium cell charging to test circuit; The electric weight display circuit is connected to test circuit, is used for showing the electric weight of the lithium battery of test circuit; Test circuit is connected the two ends of tested cable, is used to test the break-make of tested cable under high current conditions.
Above-mentioned test circuit comprises that the positive pole of lithium battery GB1 is connected to the end of switch S T1, the be connected in series positive pole of electric horn HA1 of the other end of switch S T1; The negative pole of the negative pole of electric horn HA1 and the lithium battery GB1 test lead that partners is connected respectively to the two ends of tested cable Rx during test.
Technique scheme, because having adopted test circuit is the series circuit that lithium battery, switch, electric horn and tested cable constitute, can provide to tested cable and surpass 1 ampere measuring current, the measuring current that surpasses 1 ampere when tested cable defectiveness or loose contact can make defect point or loose contact point increase because of temperature rise causes resistance, because of dividing potential drop or current limliting cause electric horn not ring, thus the defective of testing out or loose contact.Thereby improved the reliability of on off test.
Description of drawings
Accompanying drawing of the present utility model comprises:
Fig. 1 is an entire block diagram of the present utility model;
Fig. 2 is the circuit diagram of test circuit of the present utility model.
Embodiment
Embodiment 1:
By as can be known shown in Figure 1, this cable break-make detecting device is used for the break-make of tested cable is carried out high current detecting, and charging circuit is connected to test circuit, and the electric weight display circuit is connected to test circuit, and test circuit is connected the two ends of tested cable.
Comprised by test circuit shown in Figure 2: the positive pole of lithium battery GB1 is connected in series to the end of switch S T1, the other end of switch S T1 is connected to the positive pole of electric horn HA1, and the negative pole of the negative pole of electric horn HA1 and lithium battery GB1 is connected respectively to tested cable (Rx) two ends.Lithium battery GB1, switch S T1, electric horn HA1 and tested cable Rx constitute series circuit, when the electric current of the electric horn HA1 that flows through just can be rung greater than 1 ampere-hour electric horn HA1, lithium battery GB1 voltage range is 7.2 volts to 8.4 volts, electric current is that 1 ampere-hour electric horn HA1 two ends pressure drop is 5 volts, so when tested cable flows through under the situation of 1 Ampere currents, have only resistance just can ring less than 2～3 ohm of electric horns, and open circuit or resistance is excessive or because when flowing through big electric current and causing defect point or contact point temperature rising resistance to become big when tested cable, meeting dividing potential drop or current limliting, make the electric current that flows through electric horn too small, can not ring.Thereby judge the on off operating mode of tested cable under high electric current.
Claims (2)
1. a cable break-make detecting device is used for the cable break-make is carried out high current detecting, it is characterized in that test circuit connects charging circuit, electric weight display circuit, tested cable respectively, wherein:
Charging circuit is connected to test circuit, is used for the lithium cell charging to test circuit;
The electric weight display circuit is connected to test circuit, is used for showing the electric weight of the lithium battery of test circuit;
Test circuit is connected the two ends of tested cable, is used to test the break-make of tested cable under high current conditions.
2. cable break-make detecting device according to claim 1 is characterized in that described test circuit comprises that the positive pole of lithium battery GB1 is connected to the end of switch S T1, the be connected in series positive pole of electric horn HA1 of the other end of switch S T1; The negative pole of the negative pole of electric horn HA1 and the lithium battery GB1 test lead that partners is connected respectively to the two ends of tested cable Rx during test.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201865646U CN201707417U (en) | 2010-05-12 | 2010-05-12 | Cable on-off detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201865646U CN201707417U (en) | 2010-05-12 | 2010-05-12 | Cable on-off detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201707417U true CN201707417U (en) | 2011-01-12 |
Family
ID=43444577
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201865646U Expired - Fee Related CN201707417U (en) | 2010-05-12 | 2010-05-12 | Cable on-off detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201707417U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103558491A (en) * | 2013-10-23 | 2014-02-05 | 刘伟华 | Loop connection and disconnection tester for electric system |
| CN105699835A (en) * | 2013-10-23 | 2016-06-22 | 刘伟华 | Electric power loop on-off tester |
| CN105717412A (en) * | 2013-10-23 | 2016-06-29 | 刘伟华 | Portable circuit on-off detection tool |
| CN105717411A (en) * | 2013-10-23 | 2016-06-29 | 刘伟华 | Circuit on-off detection device used for electric power overhaul |
-
2010
- 2010-05-12 CN CN2010201865646U patent/CN201707417U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103558491A (en) * | 2013-10-23 | 2014-02-05 | 刘伟华 | Loop connection and disconnection tester for electric system |
| CN103558491B (en) * | 2013-10-23 | 2016-03-30 | 国网山东高密市供电公司 | A kind of electric system loop on off test device |
| CN105699835A (en) * | 2013-10-23 | 2016-06-22 | 刘伟华 | Electric power loop on-off tester |
| CN105717412A (en) * | 2013-10-23 | 2016-06-29 | 刘伟华 | Portable circuit on-off detection tool |
| CN105717411A (en) * | 2013-10-23 | 2016-06-29 | 刘伟华 | Circuit on-off detection device used for electric power overhaul |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: HAINA POWER MEASUREMENT + INSTRUMENTS INC. Free format text: FORMER NAME: QINHUANGDAO HAINA ELECTRICAL MEASUREMENT INC. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 066004 Jing River Road, Qinhuangdao Economic Development Zone, Hebei, 5 Patentee after: Haina Power Measurement & Instruments Inc. Address before: 066004 Jing River Road, Qinhuangdao Economic Development Zone, Hebei, 5 Patentee before: Qinhuangdao Haina Electrical Measurement Inc. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110112 Termination date: 20180512 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |