CN201910327U - Electricity-stealing-preventive combined mutual inductor - Google Patents
Electricity-stealing-preventive combined mutual inductor Download PDFInfo
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- CN201910327U CN201910327U CN2010206358366U CN201020635836U CN201910327U CN 201910327 U CN201910327 U CN 201910327U CN 2010206358366 U CN2010206358366 U CN 2010206358366U CN 201020635836 U CN201020635836 U CN 201020635836U CN 201910327 U CN201910327 U CN 201910327U
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Abstract
The utility model relates to an electricity-stealing-preventive combined mutual inductor, which mainly comprises a live wire, a zero wire, a current transformer coil, a shunt and a plastic box. The current transformer coil and a voltage transformer coil are combined and fixed in the plastic box and poured by epoxy resin for sealing, the shunt is disposed on the live wire, a signal acquisition end and a voltage output end are disposed on the shunt, the current transformer coil is sleeved on the zero wire, a signal acquisition end is arranged on the current transformer, the live wire and the zero wire simultaneously penetrate in the voltage transformer coil, and a voltage output end is disposed on the voltage transformer coil. The electricity-stealing-preventive combined mutual inductor has the advantages that when current passing through the live wire and current passing through the zero wire are imbalanced and the live wire and the zero wire are arranged in the voltage transformer, voltage is generated by the voltage transformer coil to supply for a voltmeter, so that a metering unit and a metering chip can operate normally, and current power consumption can be counted.
Description
Technical field
The utility model relates to a kind of instrument transformer, the anti-electricity-theft combined instrument transformer on particularly a kind of application and the electronic electricity meter.
Background technology
Existing electronic electricity meter mainly is the power consumption of secondary current signal by computation chip and numeration unit metering user by the sampled signal of shunt or current mutual inductor coil; Computation chip in the electronic electricity meter is directly to power on the road mutually by inlet wire with the operating voltage of numeration unit; Some malice users particularly, the zero line that disconnects inlet wire uses by the method power stealing from the connecting to neutral line, causes electric energy meter numeration unit and computation chip to power, and makes the electric energy meter actual power consumption that can't count, and gives the massive losses that causes electrical supplier.
The utility model content
The purpose of this utility model is to provide a kind of electric energy meter to sneak current under operating voltage or live wire and the unbalanced situation of zero line biphase current not having for the deficiency that solves above-mentioned technology, still can guarantee the ammeter metering, effectively prevent the anti-electricity-theft combined instrument transformer of the behavior of sneaking current.
In order to achieve the above object, the anti-electricity-theft combined instrument transformer that the utility model is designed, it mainly comprises live wire, zero line, current mutual inductor coil, shunt and plastic casing are formed, current mutual inductor coil, the voltage transformer coil combination is fixed in the plastic casing, use the epoxy resin embedding, shunt is arranged on the live wire, on shunt, be provided with signal and adopt end and voltage output end, current mutual inductor coil is set on the zero line, current mutual inductor coil is provided with the signal sampling end, described live wire and zero line are located in the voltage transformer coil simultaneously, and the voltage transformer coil is provided with voltage output end.The characteristics of this structure are under normal operating position, the voltage transformer coil is not worked, and when appearing at by live wire in the voltage transformer coil and neutral line current imbalance, when promptly occurring having only live wire or zero line one to have electric current to pass through mutually, the voltage transformer coil produces the electricity consumption of induced voltage watt-hour meter, make that counting unit and computation chip can operate as normal, thereby count current power consumption.
For convenience equipment such as anti-electricity-theft combined instrument transformer and existing electric energy meter cooperate installation, shunt, and current mutual inductor coil is respectively equipped with signal sampling end and voltage output end on the voltage transformer coil; And at least one electric current output end of the end of shunt and zero line is fixed on the plastic casing; Current mutual inductor coil and voltage transformer coil are placed in the plastic casing and are used the epoxy resin embedding, form an anti-electricity-theft combined instrument transformer integral body.
Simultaneously, do not work under normal electricity consumption situation in order to guarantee the voltage transformer coil, what described live wire and zero line were opposite is arranged in the voltage transformer coil, guarantees that promptly the synchronization electric current is opposite through the direction of voltage transformer coil from the zero line loop stream with electric current from the flow through direction of voltage transformer coil of live wire.At this moment, the electric current between live wire and the zero line is cancelled out each other, and makes the voltage transformer coil can't obtain induced voltage.
The resulting anti-electricity-theft combined instrument transformer of the utility model, by shunt and current mutual inductor coil two alignment detection circuits, simple, intuitive is effective, circuit structure is simple, has higher diamagnetic interference performance, and the insulation isolating power is strong, compact conformation, conserve space, moistureproof antidetonation, the anti-electricity-theft combined instrument transformer of being convenient to install and fix.Particularly be provided with the voltage transformer coil, can guarantee the normal metering of ammeter under the situation of improper electricity consumption, the behavior of sneaking current has been stopped in normally metering under the situation of feasible power stealing simultaneously technically.
Description of drawings
Fig. 1 is the utility model embodiment 1 structural representation;
Fig. 2 is the utility model embodiment 1 circuit structure diagram.
Embodiment
The utility model will be further described in conjunction with the accompanying drawings below by embodiment.
Embodiment 1:
As shown in Figure 1 and Figure 2, the anti-electricity-theft combined instrument transformer that present embodiment is described, it mainly comprises live wire 1, zero line 2, current mutual inductor coil 3, voltage transformer coil 5, shunt 4 and plastic casing 8.Shunt 4 is arranged on the live wire 1, is provided with shunt signal sampling end 41 on shunt 4, and current mutual inductor coil 3 is set on the zero line 2, and described live wire 1 and zero line 2 are simultaneously by in the voltage transformer coil 5.Current mutual inductor coil 3 is provided with current transformer signal sampling end 7, and voltage transformer coil 5 is provided with voltage transformer voltage output end 6.Described live wire 1 and zero line 2 opposite being arranged in the voltage transformer coil 5 guarantee that promptly the synchronization electric current is opposite from live wire 1 the flow through direction of voltage transformer coil of direction and the current circuit zero line 2 of voltage transformer coil of flowing through.
Current mutual inductor coil 3, voltage transformer coil 5 are placed in the plastic casing 8 and are used the epoxy resin embedding, form an anti-electricity-theft combined instrument transformer integral body.And at least one electric current output end of the end of shunt 4 and zero line 2 is fixed on the plastic casing 8;
When installing and using shunt signal sampling end 41 summation current transformer coil signal sampling ends 7 are connected on the computation chip and numeration element circuit of ammeter, voltage transformer coil voltage output 6 is to being connected in the ammeter supply control unit circuit, and the electricity consumption end 11 of live wire 1 and the electricity consumption end 21 of zero line 2 are linked in the power circuit.
Under the normal operating position, the power supply termination ammeter work electricity consumption of shunt voltage output end 9 and zero line voltage output end 10, ammeter normally measures, the current opposite in direction that this moment, live wire 1 and zero line 2 passed voltage transformer coil 4, the life of cutting down output of voltage transformer coil 4 influence electricities.Under the abnormal condition, for example leak electricity, sneak current, fall zero line, electric current refluxes from All other routes behind live wire 1 and electrical appliance, occur in the live wire 1 electric current being arranged, and under the zero line 2 interior currentless situations and under the situation of the current imbalance of live wire 1 and zero line 2, voltage transformer coil 4 produces induced voltage owing to the difference between current between live wire 1 and the zero line 2, this induced voltage equally can be for ammeter work provides voltage, makes ammeter also normal note amount under abnormal condition.
Claims (3)
1. anti-electricity-theft combined instrument transformer, it comprises that mainly live wire, zero line, current mutual inductor coil, shunt and plastic casing form; Current mutual inductor coil, voltage transformer coil combination are fixed in the plastic casing, use the epoxy resin embedding, shunt is arranged on the live wire, on shunt, be provided with signal and adopt end and voltage output end, current mutual inductor coil is set on the zero line, current mutual inductor coil is provided with the signal sampling end, it is characterized in that described live wire and zero line are located in the voltage transformer coil simultaneously, and the voltage transformer coil is provided with voltage output end.
2. anti-electricity-theft combined instrument transformer according to claim 1 is characterized in that being respectively equipped with signal sampling end and voltage output end on described current mutual inductor coil and the voltage transformer coil; And at least one electric current output end of the end of shunt and zero line is fixed on the plastic casing; Current mutual inductor coil and voltage transformer coil are placed in the plastic casing and are used the epoxy resin embedding, form an anti-electricity-theft combined instrument transformer integral body.
3. anti-electricity-theft combined instrument transformer according to claim 1 and 2, it is characterized in that opposite being arranged in the voltage transformer coil of described live wire and zero line, guarantee that the synchronization electric current is opposite through the direction of voltage transformer from the zero line backflow with electric current from the flow through direction of voltage transformer coil of live wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206358366U CN201910327U (en) | 2010-11-30 | 2010-11-30 | Electricity-stealing-preventive combined mutual inductor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206358366U CN201910327U (en) | 2010-11-30 | 2010-11-30 | Electricity-stealing-preventive combined mutual inductor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201910327U true CN201910327U (en) | 2011-07-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206358366U Expired - Lifetime CN201910327U (en) | 2010-11-30 | 2010-11-30 | Electricity-stealing-preventive combined mutual inductor |
Country Status (1)
| Country | Link |
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| CN (1) | CN201910327U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102360871A (en) * | 2011-08-23 | 2012-02-22 | 常熟开关制造有限公司(原常熟开关厂） | Mutual inductor packaging assembly |
| CN106526267A (en) * | 2016-12-21 | 2017-03-22 | 武汉阿迪克电子股份有限公司 | Single-phase intelligent electricity-stealing-prevention electric energy meter and method for reducing power consumption |
| CN113311206A (en) * | 2021-05-31 | 2021-08-27 | 宁波迦南智能电气股份有限公司 | Method for realizing sampling, power supply or electricity stealing judgment by current transformer |
| CN118465364A (en) * | 2024-07-08 | 2024-08-09 | 青岛鼎信通讯股份有限公司 | Electric energy meter, electricity stealing detection method, system, equipment and storage medium |
-
2010
- 2010-11-30 CN CN2010206358366U patent/CN201910327U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102360871A (en) * | 2011-08-23 | 2012-02-22 | 常熟开关制造有限公司(原常熟开关厂） | Mutual inductor packaging assembly |
| CN102360871B (en) * | 2011-08-23 | 2012-11-21 | 常熟开关制造有限公司(原常熟开关厂） | Mutual inductor packaging assembly |
| CN106526267A (en) * | 2016-12-21 | 2017-03-22 | 武汉阿迪克电子股份有限公司 | Single-phase intelligent electricity-stealing-prevention electric energy meter and method for reducing power consumption |
| CN113311206A (en) * | 2021-05-31 | 2021-08-27 | 宁波迦南智能电气股份有限公司 | Method for realizing sampling, power supply or electricity stealing judgment by current transformer |
| CN118465364A (en) * | 2024-07-08 | 2024-08-09 | 青岛鼎信通讯股份有限公司 | Electric energy meter, electricity stealing detection method, system, equipment and storage medium |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder |
Address after: 314500 1-2 floors of 7 blocks, 320 Tongsheng Road, Fengming Street, Tongxiang City, Jiaxing City, Zhejiang Province Patentee after: Tongxiang Weida Electronics Co., Ltd. Address before: 314513 Zhongan Village, Zhouquan Town, Tongxiang City, Jiaxing City, Zhejiang Province Patentee before: Tongxiang Weida Electronics Co., Ltd. |
|
| CP02 | Change in the address of a patent holder | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110727 |
|
| CX01 | Expiry of patent term |