CN203275495U - High voltage cable shielding net grounding wire leakage current detector - Google Patents
High voltage cable shielding net grounding wire leakage current detector Download PDFInfo
- Publication number
- CN203275495U CN203275495U CN 201320297106 CN201320297106U CN203275495U CN 203275495 U CN203275495 U CN 203275495U CN 201320297106 CN201320297106 CN 201320297106 CN 201320297106 U CN201320297106 U CN 201320297106U CN 203275495 U CN203275495 U CN 203275495U
- Authority
- CN
- China
- Prior art keywords
- circuit
- loop
- selection circuit
- output terminal
- input end
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 229910000838 Al alloy Inorganic materials 0.000 claims abstract description 13
- 230000002457 bidirectional effect Effects 0.000 claims abstract description 8
- 230000005611 electricity Effects 0.000 claims description 13
- 238000001914 filtration Methods 0.000 claims description 10
- 239000000203 mixture Substances 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 abstract 2
- 238000012423 maintenance Methods 0.000 abstract 2
- 238000001514 detection method Methods 0.000 abstract 1
- 238000012360 testing method Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- 230000003750 conditioning effect Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Landscapes
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
The utility model relates to a high voltage cable shielding net grounding wire leakage current detector. The detector comprises an aluminum alloy shell. An alternating current/direct current power supply device and detection apparatus are arranged in the aluminum alloy shell. An anode and a cathode of the alternating current/direct current power supply device are connected with a frequency selection circuit respectively. A secondary side of a current sensor is connected with an I/V conversion circuit through a shielding wire. The I/V conversion circuit is connected with a bidirectional analog quantity output port and the frequency selection circuit respectively. The frequency selection circuit is connected with a filter circuit and a rectification loop respectively. The filter circuit is connected with the rectification loop. The rectification loop is connected with a peak value response time selection circuit. The peak value response time selection circuit is connected with input terminals of a peak value maintenance loop and a LCD driving loop respectively. An output terminal of the peak value maintenance loop 318 is successively and electrically connected with a partial pressure loop, the LCD driving loop and a LCD display screen. By using the detector of the utility model, a problem of cable burning losses caused by multi-point grounding of the existing cable shielding net grounding wire can be timely discovered and solved.
Description
Technical field
The utility model relates to a kind of detector, especially relates to a kind of high-tension cable gauze screen ground wire Leakage Current detector.
Background technology
At present, the leakage current testing of known high-tension cable gauze screen ground wire is not also included testing regulations in, and domestic do not have this kind test apparatus yet.
The utility model content
The problem that exists in order to solve prior art, the utility model provides a kind of high-tension cable gauze screen ground wire Leakage Current detector, this detector can detect power cable gauze screen ground current, judge whether the cable shielding mesh ground wire exists the problem of multipoint earthing, solved the problem that existing cable gauze screen ground wire multipoint earthing causes the cable scaling loss.
The technical scheme that the utility model adopts is:
high-tension cable gauze screen ground wire Leakage Current detector, include Al-alloy casing, be provided with the supplied by AC/DC electricity device in Al-alloy casing, pick-up unit and current sensor, described pick-up unit is by the I/V change-over circuit, bidirectional analog amount output port, frequency selection circuit, filtering circuit, commutating circuit, the peak response time selection circuit, peak value keeps the loop, divide hydraulic circuit, LCD drives loop and LCD display composition, the both positive and negative polarity of described supplied by AC/DC electricity device is connected with frequency selection circuit respectively, the secondary side of described current sensor is connected by the input end of shielding line with the I/V change-over circuit, the output terminal of I/V change-over circuit is connected with the input end of bidirectional analog amount output port and frequency selection circuit respectively, the output terminal of frequency selection circuit is connected with the input end of filtering circuit and commutating circuit respectively, the output terminal of filtering circuit is connected with the input end of commutating circuit, the output terminal of commutating circuit is connected with the input end of peak response time selection circuit, the output terminal of peak response time selection circuit keeps the loop to be connected with the input end that LCD drives the loop with peak value respectively, peak value keeps the output terminal and a minute hydraulic circuit in loop 318, LCD drives the loop and LCD display is electrically connected to successively.
Described high-tension cable gauze screen ground wire Leakage Current detector is provided with intelligent moisture separating device.
Described intelligent moisture separating device is comprised of temperature and humidity controller, fan, well heater and Temperature Humidity Sensor, the input end of described temperature and humidity controller is electrically connected to the supplied by AC/DC electricity device, the output terminal of temperature and humidity controller is electrically connected to fan and well heater respectively, and Temperature Humidity Sensor is electrically connected to the signal input part of temperature and humidity controller.
Advantage and effect that the utility model has are:
The utility model high-tension cable gauze screen ground wire Leakage Current detector has been provided with Al-alloy casing, be provided with supplied by AC/DC electricity device and pick-up unit in Al-alloy casing, can detect power cable gauze screen ground current, judge whether the cable shielding mesh ground wire exists the problem of multipoint earthing.Current sensor is connected with shielding line with the display part, due to the shielding action of Al-alloy casing, a complete set of equipment is under masked state, has avoided the interference of the complicated electric field of test site; Because current sensor and pick-up unit are splits, be convenient to read the numerical value on LCD display; With frequency selection function and peak-value-holding function, simultaneously owing to having installed intelligent moisture separating device additional, guarantee that instrument is under desirable condition of work all the time, test data is more accurate.Solved the problem that existing cable gauze screen ground wire multipoint earthing causes the cable scaling loss.
Description of drawings
Fig. 1 is the block scheme of the utility model high-tension cable gauze screen ground wire Leakage Current detector.
supplied by AC/DC electricity device 1 in figure, intelligence moisture separating device 2, pick-up unit 3, current sensor 4, I/V change-over circuit 312, bidirectional analog amount output port 313, frequency selection circuit 314, filtering circuit 315, commutating circuit 316, peak response time selection circuit 317, peak value keeps loop 318, divide hydraulic circuit 319, LCD drives loop 320, LCD display 321, temperature and humidity controller 207, fan 208, well heater 209, Temperature Humidity Sensor 210, AC Power supply socket 101, air switch 102, fuse 103, transformer 104, bridge rectifier 105, rechargeable battery 106.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing:
as shown in Figure 1, the utility model high-tension cable gauze screen ground wire Leakage Current detector includes Al-alloy casing, be provided with supplied by AC/DC electricity device 1 in Al-alloy casing, pick-up unit 3 and current sensor 4, described pick-up unit 3 is by I/V change-over circuit 312, bidirectional analog amount output port 313, frequency selection circuit 314, filtering circuit 315, commutating circuit 316, peak response time selection circuit 317, peak value keeps loop 318, divide hydraulic circuit 319, LCD drives loop 320 and LCD display 321 compositions, described supplied by AC/DC electricity device 1 is by AC Power supply socket 101, air switch 102, fuse 103, transformer 104, bridge rectifier 105 and rechargeable battery 106 form.the both positive and negative polarity of described supplied by AC/DC electricity device 1 is connected with frequency selection circuit 314 respectively, the secondary side of described current sensor 4 is connected by the input end of shielding line with I/V change-over circuit 312, the output terminal of I/V change-over circuit 312 is connected with the input end of bidirectional analog amount output port 313 and frequency selection circuit 314 respectively, the output terminal of frequency selection circuit 314 is connected with the input end of filtering circuit 315 with commutating circuit 316 respectively, the output terminal of filtering circuit 315 is connected with the input end of commutating circuit 316, the output terminal of commutating circuit 316 is connected with the input end of peak response time selection circuit 317, the output terminal of peak response time selection circuit 317 keeps loop 318 to be connected with the input end that LCD drives loop 320 with peak value respectively, peak value keeps the output terminal and a minute hydraulic circuit 319 in loop 318, LCD drives loop 320 and LCD display 321 is electrically connected to successively.
Described high-tension cable gauze screen ground wire Leakage Current detector also is provided with intelligent moisture separating device 2.
Described intelligent moisture separating device 2 is comprised of temperature and humidity controller 207, fan 208, well heater 209 and Temperature Humidity Sensor 210, the input end of described temperature and humidity controller 207 is electrically connected to supplied by AC/DC electricity device 1, the output terminal of temperature and humidity controller 207 is electrically connected to fan 208 and well heater 209 respectively, and Temperature Humidity Sensor 210 is electrically connected to the signal input part of temperature and humidity controller 207.
The course of work of the present utility model is as follows:
current sensor collection site data, send the data that gather to the I/V change-over circuit by shielding line, the I/V change-over circuit is converted to voltage signal with current signal and gives subsequent conditioning circuit and process, output at last LCD display, demonstrate measurement result, simultaneously can be with analog output, for recording camera, digital multimeter or registering instrument analysis, device adopts supplied by AC/DC electricity, the alternating current 220V power supply is through transformer pressure-reducing, be converted to the 9V direct current by bridge rectifier circuit, humiture in Temperature Humidity Sensor harvester case, give temperature and humidity controller, temperature and humidity controller intelligence dehumidifies and is incubated, device is under desirable condition of work all the time, complete unit is loaded in aluminium alloy box, the aluminium alloy box has played the effect of shielding, avoided the interference of the complicated electric field of test site.
Claims (3)
1. high-tension cable gauze screen ground wire Leakage Current detector, it is characterized in that including Al-alloy casing, be provided with the supplied by AC/DC electricity device in Al-alloy casing, pick-up unit and current sensor, described pick-up unit is by the I/V change-over circuit, bidirectional analog amount output port, frequency selection circuit, filtering circuit, commutating circuit, the peak response time selection circuit, peak value keeps the loop, divide hydraulic circuit, LCD drives loop and LCD display composition, the both positive and negative polarity of described supplied by AC/DC electricity device is connected with frequency selection circuit respectively, the secondary side of described current sensor 4 is connected by the input end of shielding line with the I/V change-over circuit, the output terminal of I/V change-over circuit is connected with the input end of bidirectional analog amount output port and frequency selection circuit respectively, the output terminal of frequency selection circuit is connected with the input end of filtering circuit and commutating circuit respectively, the output terminal of filtering circuit is connected with the input end of commutating circuit, the output terminal of commutating circuit is connected with the input end of peak response time selection circuit, the output terminal of peak response time selection circuit keeps the loop to be connected with the input end that LCD drives the loop with peak value respectively, peak value keeps the output terminal and a minute hydraulic circuit in loop, LCD drives the loop and LCD display is electrically connected to successively.
2. high-tension cable gauze screen ground wire Leakage Current detector according to claim 1, is characterized in that being provided with intelligent moisture separating device.
3. high-tension cable gauze screen ground wire Leakage Current detector according to claim 2, it is characterized in that described intelligent moisture separating device is comprised of temperature and humidity controller, fan, well heater and Temperature Humidity Sensor, the input end of described temperature and humidity controller is electrically connected to the supplied by AC/DC electricity device, the output terminal of temperature and humidity controller is electrically connected to fan and well heater respectively, and Temperature Humidity Sensor is electrically connected to the signal input part of temperature and humidity controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320297106 CN203275495U (en) | 2013-05-28 | 2013-05-28 | High voltage cable shielding net grounding wire leakage current detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320297106 CN203275495U (en) | 2013-05-28 | 2013-05-28 | High voltage cable shielding net grounding wire leakage current detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203275495U true CN203275495U (en) | 2013-11-06 |
Family
ID=49505872
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320297106 Expired - Fee Related CN203275495U (en) | 2013-05-28 | 2013-05-28 | High voltage cable shielding net grounding wire leakage current detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203275495U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103308744A (en) * | 2013-05-28 | 2013-09-18 | 国家电网公司 | Leakage current detector for ground wire of high-voltage cable shielding net |
-
2013
- 2013-05-28 CN CN 201320297106 patent/CN203275495U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103308744A (en) * | 2013-05-28 | 2013-09-18 | 国家电网公司 | Leakage current detector for ground wire of high-voltage cable shielding net |
| CN103308744B (en) * | 2013-05-28 | 2015-07-29 | 国家电网公司 | High-tension cable gauze screen ground wire leakage current detector |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103454554B (en) | Polarity tester for current transformer | |
| CN101162244B (en) | Train insulating resistance testing recorder and testing method | |
| CN101639514B (en) | Detecting device for detecting IGBT | |
| CN201247278Y (en) | On-line monitoring device for grounding current of transformer iron core | |
| CN205427102U (en) | Current transformer polarity high speed tester | |
| CN201878049U (en) | Intelligent header box for photovoltaic power generation | |
| CN203838264U (en) | Subway vehicle battery charger test bench | |
| CN204287418U (en) | A kind of circuit breaker switch state pick-up unit | |
| CN208384025U (en) | A kind of test macro of direct-current charging post | |
| CN103308744B (en) | High-tension cable gauze screen ground wire leakage current detector | |
| CN203275495U (en) | High voltage cable shielding net grounding wire leakage current detector | |
| CN203630283U (en) | Hand-held detection device used for cable insulation detection | |
| CN202916338U (en) | Device for monitoring and recording electric power of electric equipment in real time | |
| CN204832412U (en) | Novel combined instrument transformer polarity test appearance | |
| CN102759681A (en) | Transformer core ground fault monitoring device | |
| CN202676845U (en) | Device for monitoring earth fault of transformer core | |
| CN203349964U (en) | Self-energy-obtaining wireless temperature sensing chip | |
| CN206906520U (en) | A kind of cable major insulation fault locator | |
| CN202502189U (en) | Low voltage line leakage fault seeking device | |
| CN202093130U (en) | Partial discharge online monitoring device for distributed cable | |
| CN205301405U (en) | Novel digital power frequency virtual value multimeter of low -power consumption | |
| CN204925288U (en) | Electrolytic capacitor fills discharge characteristics testing arrangement | |
| CN204228927U (en) | The multimode lithium battery group charging and discharging currents detection system in parallel of wireless telecommunications | |
| CN202631625U (en) | On-line monitor for switch cabinet capable of collecting information easily | |
| CN203595761U (en) | Detection device of lithium battery charger |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20131106 Termination date: 20160528 |