CN201903574U - Non-contact voltage and current sampler - Google Patents
Non-contact voltage and current sampler Download PDFInfo
- Publication number
- CN201903574U CN201903574U CN2010206715310U CN201020671531U CN201903574U CN 201903574 U CN201903574 U CN 201903574U CN 2010206715310 U CN2010206715310 U CN 2010206715310U CN 201020671531 U CN201020671531 U CN 201020671531U CN 201903574 U CN201903574 U CN 201903574U
- Authority
- CN
- China
- Prior art keywords
- voltage
- current
- sampling
- coil
- utility
- 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 - Lifetime
Links
Landscapes
- Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
- Transformers For Measuring Instruments (AREA)
Abstract
The utility model relates to a voltage and current measuring device, in particular to a non-contact voltage and current sampler. The utility model provides an electronic type current and voltage combined mutual inductor with a non-contact structure. The mutual inductor can be conveniently installed in a switch apparatus, and a current and voltage signal can be monitored without turning off power supply equipment. The non-contact voltage and current sampler comprises an access unit and sampling units, wherein the access unit is a conductor; the sampling units are set to be inductance coils; two inductance coils are arranged and are a voltage sampling coil and a current sampling coil respectively. The non-contact voltage and current sampler has the advantages of unsaturation, wide measuring range, small volume, light weight and the like, and the digital transmission is convenient. The utility model is suitable for being applied to devices with various voltage classes, in particular to ultrahigh-voltage switch apparatuses.
Description
Technical field
The utility model relates to a kind of voltage and current measurement device, specifically, relates to a kind of contactless electric current and voltage sampling thief.
Background technology
Current-voltage transformer is a signal collecting device important in the electrical network, is generally independent installation, when installing out of doors, for can be easy for installation, the combination transformer that adopts current-voltage transformer to be combined into one be arranged.Combination transformer is because size and weight, can't use with conventional transformer station in.This is conventional electromagnetic type combination transformer, because that the volume and weight of himself can't be done is little, uses inconveniently, is inconvenient to promote.
Along with the popularization of electronic mutual inductor, the current-voltage transformer of electronic type also has product to release, because present electronic mutual inductor is the contact structure, mainly is two kinds of electric resistance partial pressure and capacitance partial pressures.Need the two ends that have of mutual inductor directly to be connected in the high-tension apparatus, maintenance is inconvenient.
Summary of the invention
The utility model overcomes above-mentioned defective, and a kind of electronic current voltage combined instrument transformer of non-contact structure is provided, and can conveniently install in switchgear by this mutual inductor, need not to disconnect power-supply unit, can the monitoring current voltage signal.
The technical scheme of contactless voltage current transformer of the present utility model is such: it comprises access unit, sampling unit, access unit is a conductor, sampling unit is set to inductive coil, and inductive coil is set to two, is respectively voltage sample coil and current sample coil.
Current/voltage adopts coil to be cast in jointly in the annular pour mass.
Sampling coil peripheral hardware is put screen layer, and the sampling coil is cast in the screen layer shielding layer grounding.
In the middle of the annular pour mass locating device is set.
That contactless electric current and voltage sampling thief of the present utility model has is unsaturated, measurement range is big, volume is little, in light weight and be convenient to advantages such as digital transmission, be suitable for the particularly application in the UHV (ultra-high voltage) switchgear of various electric pressures.
Description of drawings
Fig. 1 is the structural representation of contactless electric current and voltage sampling thief of the present utility model.
1: insert conductor, 2: voltage sample coil, 3: current sample coil.
Embodiment
It comprises access unit, sampling unit contactless electric current and voltage sampling thief of the present utility model, and access unit is a conductor, and sampling unit is set to inductive coil, and inductive coil is set to two, is respectively voltage sample coil 2 and current sample coil 3.The current-voltage sampling coil is cast in the annular pour mass jointly.Sampling coil peripheral hardware is put screen layer, and the sampling coil is cast in the screen layer shielding layer grounding.In the middle of the annular pour mass locating device is set.
The voltage sample coil is mainly monitored electric field signal, forgo unnecessary same frequency and high frequency interference.
The current sample coil mainly is the monitoring field signal, forgo unnecessary electric field and magnetic interference.
In order to satisfy the stability of electric current and voltage sampling signal, sampling coil peripheral hardware is put screen layer, guarantees the intensity of main monitor signal.
The sampling coil is cast in the screen layer shielding layer grounding.Guarantee the stable operation of electromagnetic screen.
Insert conductor 1 in the middle of the mutual inductor locating device is set, the conductor 1 that guarantees punching guarantees that at positive center the sampling of electric current and voltage sample unit is stable, and the output signal integration is reliable.
For the reliability that guarantees that secondary singal is handled, secondary singal should be provided with the temperature and humidity compensation.
The beneficial effects of the utility model are: the Contactless electronic formula electric current and voltage sampling apparatus that the utility model provides is except the most of advantage that possesses electronic mutual inductor, also because its sample circuit and high-tension circuit are isolated fully, therefore guaranteed the security of device; Because it adopts the punching structure, has greatly saved the installing space of transformer, also therefore go for any electric pressure, the especially use in high pressure; In addition, the device insulation system that this utility model provides is simplified greatly, has also reduced the dependence to non-ferrous metal, and own loss is little, has guaranteed service life and the safe operation of device.
Claims (4)
1. contactless electric current and voltage sampling thief, it comprises access unit, sampling unit, and access unit is a conductor, it is characterized in that, and sampling unit is set to inductive coil, and inductive coil is set to two, is respectively voltage sample coil and current sample coil.
2. contactless electric current and voltage sampling thief according to claim 1 is characterized in that the current-voltage sampling coil is cast in the annular pour mass jointly.
3. contactless electric current and voltage sampling thief according to claim 1 is characterized in that, sampling coil peripheral hardware is put screen layer, and the sampling coil is cast in the screen layer shielding layer grounding.
4. contactless electric current and voltage sampling thief according to claim 2 is characterized in that, locating device is set in the middle of the annular pour mass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206715310U CN201903574U (en) | 2010-12-21 | 2010-12-21 | Non-contact voltage and current sampler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206715310U CN201903574U (en) | 2010-12-21 | 2010-12-21 | Non-contact voltage and current sampler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201903574U true CN201903574U (en) | 2011-07-20 |
Family
ID=44274168
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206715310U Expired - Lifetime CN201903574U (en) | 2010-12-21 | 2010-12-21 | Non-contact voltage and current sampler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201903574U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103675407A (en) * | 2013-12-03 | 2014-03-26 | 浙江华采科技有限公司 | Strut-type current collection device for power transmission lines |
| CN105675959A (en) * | 2016-02-01 | 2016-06-15 | 硅谷数模半导体（北京）有限公司 | High-voltage circuit current detection circuit |
-
2010
- 2010-12-21 CN CN2010206715310U patent/CN201903574U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103675407A (en) * | 2013-12-03 | 2014-03-26 | 浙江华采科技有限公司 | Strut-type current collection device for power transmission lines |
| CN105675959A (en) * | 2016-02-01 | 2016-06-15 | 硅谷数模半导体（北京）有限公司 | High-voltage circuit current detection circuit |
| CN105675959B (en) * | 2016-02-01 | 2019-01-08 | 硅谷数模半导体（北京）有限公司 | High-pressure passage current detection circuit |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109375076A (en) | A kind of on-line monitoring method for dry-type air-core reactor turn-to-turn insulation failure | |
| CN202870240U (en) | A partial discharge testing device of a converter transformer at a high altitude locality | |
| CN201903574U (en) | Non-contact voltage and current sampler | |
| CN202330555U (en) | Harmonic detection circuit device | |
| CN201569508U (en) | Temperature rise monitoring and analyzing device of high-pressure equipment | |
| CN106501580B (en) | Integrated isolation circuit breaker and electronic transformer collector thereof | |
| CN204885872U (en) | Enclosed switch cabinet temperature -detecting device | |
| CN109253815B (en) | Wireless temperature sensor and application thereof | |
| CN204373809U (en) | A kind of watchband type passive and wireless temperature measurement on-line device | |
| CN203589843U (en) | Intelligent high-voltage live-line display and locking device | |
| CN110927540A (en) | C-GIS intelligent partial discharge monitoring device based on electrified display | |
| CN203070913U (en) | High-voltage line current transformer | |
| CN201716359U (en) | Non-contact electronic type voltage sampling device | |
| CN210243770U (en) | Wearable cable partial discharge intelligent sensor | |
| CN203465335U (en) | GIS-type electronic mutual inductor housing | |
| CN211741529U (en) | High tension switchgear insulator leakage current on-line monitoring device | |
| CN103487635A (en) | High voltage induction wireless electrified indicating device | |
| CN202870144U (en) | Current measuring device for breaker or switch cabinet | |
| CN111293675A (en) | Fusion type power transmission line fault isolation device | |
| CN202815071U (en) | High-voltage live detection indication system | |
| CN202093079U (en) | Electronic type voltage transformer based on coaxial differential pressure | |
| CN210199240U (en) | Magnetic field sensor for partial discharge detection based on four-corner star annular structure | |
| CN203178338U (en) | Leakage current monitoring device | |
| CN213875911U (en) | Switch cabinet discharge measurement system | |
| CN103377819A (en) | Current-voltage transformer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110720 |