CN205104445U - Anti -electricity -theft circuit breaker - Google Patents
Anti -electricity -theft circuit breaker Download PDFInfo
- Publication number
- CN205104445U CN205104445U CN201520875382.2U CN201520875382U CN205104445U CN 205104445 U CN205104445 U CN 205104445U CN 201520875382 U CN201520875382 U CN 201520875382U CN 205104445 U CN205104445 U CN 205104445U
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- electricity
- circuit breaker
- sequence current
- wire
- zero sequence
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Abstract
The utility model relates to a circuit breaker discloses an anti -electricity -theft circuit breaker very much. This anti -electricity -theft circuit breaker, including installing zero sequence current transformer, electromagnetism release and the electronic amplifier in the casing, its characterized in that: the casing both ends are provided with the wire of fixing on the base respectively and press from both sides, and the wire of one side presss from both sides and is provided with the static contact, is provided with the moving contact of corresponding static contact on the electromagnetism release through the connecting rod, and the wire of opposite side presss from both sides to be connected the electromagnetism release and connect zero sequence current transformer through the wiring board through the connecting rod, and electromagnetism release below is provided with the electronic amplifier, and live wire and zero line pass zero sequence current transformer side by side and connect on the electronic amplifier. The utility model discloses simple structure, convenient to use, reasonable in design uses in a flexible way, can play the problem that the electricity was stolen to the protection circuit, stops the user at strapping table top intercepting live wire, zero line and the problem that does not trip is suitable for extensive popularization and application.
Description
(1) technical field
The utility model relates to a kind of circuit breaker, particularly a kind of anti-electricity-theft circuit breaker.
(2) background technology
Electric power meter be power supply enterprise for measuring a steelyard of powering quantity, whether it accurately runs, can electricity theft prevention, is directly connected to the economic benefit of power supply enterprise.Existing general circuit breaker only has switching function, and do not consider anti-electricity-theft performance, the secondary circuit of high-voltage electric-energy meter opens wide to be installed, outside voltage, current wiring terminal are exposed to, secondary circuit be often connected in series have nothing to do with high-voltage electric energy measurement instrument, instrument, secondary circuit any one point all may become the hidden danger of stealing.
And along with the application of power user power consumption information acquisition system, and the large scale investment of electric energy meter uses, stealing has become more and more difficult, but the personnel of some professional stealings still can carry out stealing by transforming metering device (gauge table, instrument transformer, secondary circuit etc.) or transformation low-voltage circuit or transformer, and its principle reduces the electric current of input electric energy meter.Because this stealing mode is comparatively hidden, do not have special device to carry out monitoring and processing, cause the energy loss that country is a large amount of.
(3) summary of the invention
The utility model, in order to make up the deficiencies in the prior art, provides that a kind of Stability Analysis of Structures is reliable, the anti-electricity-theft circuit breaker of use safety.
The utility model is achieved by the following technical solution:
A kind of anti-electricity-theft circuit breaker, comprise the zero sequence current mutual inductor be arranged in housing, magnetictrip and electron-amplifier, it is characterized in that: described housing two ends are respectively arranged with the wire clamp be fixed on pedestal, the wire clamp of side is provided with fixed contact, magnetictrip is provided with the moving contact of corresponding fixed contact by connecting rod, the wire clamp of opposite side connects magnetictrip by connecting rod and connects zero sequence current mutual inductor by terminal block, electron-amplifier is provided with below magnetictrip, live wire and zero line pass zero sequence current mutual inductor side by side and are connected on electron-amplifier, in housing, electromagnetic system is installed, electromagnetic system is provided with the tripping of connecting rod connecting handle.
The utility model live wire and zero line adopt side by side through instrument transformer; from Ke Xihe law; when the live wire in same instrument transformer is consistent with neutral line current; by the electric current phasor of instrument transformer primary side with equal zero, the magnetic flux that electric current produces is cancelled out each other, and instrument transformer secondary side does not produce induced electromotive force; electron-amplifier does not work; release no current flows through, and protector is in closure state, and load obtains electric work.If the live wire in same instrument transformer and zero line one of them have electric current flow through (both used in stealing borrow zero or ask for a fire) electric current of the live wire that passes through in instrument transformer and zero line will be uneven; and the magnetic flux produced through instrument transformer; instrument transformer produces induced electromotive force; amplified by electron-amplifier; release obtains electric generation electromagnetism; by actuator, protector is tripped, protector is cut off the electricity supply, thus reaches anti-electricity-theft object.
Current differential switch of the present utility model is arranged on above gauge table, realizes anti-electricity-theft with the method for differential current, makes current differential switch realize tripping operation.
More excellent scheme of the present utility model is:
The arc control device that contact connects wire clamp are provided with in described housing.
The rotating shaft of described handle connects snap close by spring, and the end of snap close connects differential switch.
Described wire clamp top is provided with the screw of fixed outer line, and its top is provided with adjustment screw and adjusting nut.
The base of described housing is provided with clamp; The installation being convenient to circuit breaker is fixed.
The utility model structure is simple, and easy to use, reasonable in design, applying flexible, can play the problem of protection circuit stealing, stops user above gauge table, intercepts live wire, zero line and the problem that do not trip, be suitable for wide popularization and application.
(4) accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model is further described.
Fig. 1 is main TV structure schematic diagram of the present utility model;
Fig. 2 is backsight structural representation of the present utility model.
In figure, 1 housing, 2 zero sequence current mutual inductors, 3 magnetictrips, 4 electron-amplifiers, 5 pedestals, 6 wire clamp, 7 fixed contacts, 8 connecting rods, 9 moving contacts, 10 terminal blocks, 11 handles, 12 trippings, 13 arc control device, 14 snap closes, 15 screws, 16 adjustment screw, 17 adjusting nuts, 18 clamps.
(5) embodiment
Accompanying drawing is a kind of specific embodiment of the present utility model.This embodiment comprises the zero sequence current mutual inductor 2 be arranged in housing 1, magnetictrip 3 and electron-amplifier 4, described housing 1 two ends are respectively arranged with the wire clamp 6 be fixed on pedestal 5, the wire clamp 6 of side is provided with fixed contact 7, magnetictrip 3 is provided with the moving contact 9 of corresponding fixed contact 7 by connecting rod 8, the wire clamp 6 of opposite side connects magnetictrip 3 by connecting rod and connects zero sequence current mutual inductor 2 by terminal block 10, electron-amplifier 4 is provided with below magnetictrip 3, live wire and zero line pass zero sequence current mutual inductor 2 side by side and are connected on electron-amplifier 4, in housing 1, electromagnetic system is installed, electromagnetic system is provided with the tripping 12 of connecting rod connecting handle 11, the arc control device 13 that contact connects wire clamp 6 are provided with in described housing 1, the rotating shaft of described handle 11 connects snap close 14 by spring, and the end of snap close 14 connects differential switch, described wire clamp 6 top is provided with the screw 15 of fixed outer line, and its top is provided with adjustment screw 16 and adjusting nut 17, the base of described housing 1 is provided with clamp 18.
The utility model live wire and zero line adopt side by side through zero sequence current mutual inductor 2, and Kirchhoff's law is known: on circuit, any point inflow current equals to flow out electric current.When the live wire of same zero sequence current mutual inductor 2 li is consistent with neutral line current, by the electric current phasor of zero sequence current mutual inductor 2 primary side with equal zero, the magnetic flux that electric current produces is cancelled out each other, zero sequence current mutual inductor 2 secondary side does not produce induced electromotive force, electron-amplifier 4 does not work, and piezo-resistance is equivalent to open-circuit condition, and magnetictrip 3 is failure to actuate, differential switch is in closure state, and load obtains electric work.If there is differential current (both inflow currents and flow out electric current phasor and non-vanishing in the live wire in same zero sequence current mutual inductor 2 and zero line, differential current is arranged on 300mA-600mA), zero sequence current mutual inductor 2 produces magnetic flux, thus generation induced electromotive force, amplified by electron-amplifier 4, piezo-resistance is equivalent to short-circuit condition, after bridge rectifier, magnetictrip 3 obtains electric generation electromagnetism, makes this switch trip, current differential switch cutoff power supply by actuator.
This use novel product shell and Inner plastic part all adopt high-quality nylon to hinder right engineering plastics, degree of protection IP20, Uimp-4kv; Outward appearance hinders right performance and all reaches advanced international level; The volume of product is little, and modularization is installed, and Stability Analysis of Structures is reliable, and temperature rise is few, and all wire bonds faces ensure that technique all adopts the spot welding of dc point welding machine, ensure ratio of brazing area, thus reduce temperature rise; Breaking capacity, Icn, Ics6KA; Outward appearance and handle Patent design, handle adopts ergonomics, and on/off switch dynamics is suitable, comfortable; Wiring board adopts integrated circuit (IC) design, has that to realize differential current stability high, and be affected by the external environment the functions such as little, antisurge; Ambient air temperature higher limit is no more than+40 DEG C, and lower limit is not less than-10 DEG C, and the average temperature value of 24h is no more than+35 DEG C; .The height above sea level of infield is no more than 2000m; Relative humidity of atomsphere around air themperature is no more than 50% for when+40 DEG C, can allow higher relative humidity at a lower temperature, such as ,+20 DEG C time, reach 90%, should take adequate measures to the condensation produced once in a while due to variations in temperature; The class of pollution: 2 grades; Installation category: II class and III class; Any direction of external magnetic field of installation site should not exceed 5 times of earth magnetic field; General at right angle setting, can level install.
Claims (5)
1. an anti-electricity-theft circuit breaker, comprise the zero sequence current mutual inductor (2) be arranged in housing (1), magnetictrip (3) and electron-amplifier (4), it is characterized in that: described housing (1) two ends are respectively arranged with the wire clamp (6) be fixed on pedestal (5), the wire clamp (6) of side is provided with fixed contact (7), magnetictrip (3) is provided with the moving contact (9) of corresponding fixed contact (7) by connecting rod (8), the wire clamp (6) of opposite side connects magnetictrip (3) by connecting rod and connects zero sequence current mutual inductor (2) by terminal block (10), magnetictrip (3) below is provided with electron-amplifier (4), live wire and zero line pass zero sequence current mutual inductor (2) side by side and are connected on electron-amplifier (4), housing is provided with electromagnetic system in (1), electromagnetic system is provided with the tripping (12) of connecting rod connecting handle (11).
2. anti-electricity-theft circuit breaker according to claim 1, is characterized in that: be provided with the arc control device (13) that contact connects wire clamp (6) in described housing (1).
3. anti-electricity-theft circuit breaker according to claim 1, is characterized in that: the rotating shaft of described handle (11) connects snap close (14) by spring, and the end of snap close (14) connects differential switch.
4. anti-electricity-theft circuit breaker according to claim 1, is characterized in that: described wire clamp (6) top is provided with the screw (15) of fixed outer line, and is provided with adjustment screw (16) and adjusting nut (17) on its top.
5. anti-electricity-theft circuit breaker according to claim 1, is characterized in that: the base of described housing (1) is provided with clamp (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520875382.2U CN205104445U (en) | 2015-11-05 | 2015-11-05 | Anti -electricity -theft circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520875382.2U CN205104445U (en) | 2015-11-05 | 2015-11-05 | Anti -electricity -theft circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205104445U true CN205104445U (en) | 2016-03-23 |
Family
ID=55520206
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520875382.2U Expired - Fee Related CN205104445U (en) | 2015-11-05 | 2015-11-05 | Anti -electricity -theft circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205104445U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105428167A (en) * | 2015-11-05 | 2016-03-23 | 国网山东省电力公司菏泽供电公司 | Electricity larceny preventive circuit breaker |
| CN110233084A (en) * | 2019-06-28 | 2019-09-13 | 武汉长海电气科技开发有限公司 | D.C. contactor is pressed in one kind |
-
2015
- 2015-11-05 CN CN201520875382.2U patent/CN205104445U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105428167A (en) * | 2015-11-05 | 2016-03-23 | 国网山东省电力公司菏泽供电公司 | Electricity larceny preventive circuit breaker |
| CN110233084A (en) * | 2019-06-28 | 2019-09-13 | 武汉长海电气科技开发有限公司 | D.C. contactor is pressed in one kind |
| CN110233084B (en) * | 2019-06-28 | 2024-04-30 | 武汉长海电气科技开发有限公司 | Medium-voltage direct-current contactor |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160323 Termination date: 20181105 |