CN203673952U - Current transformer for intelligent electric meter - Google Patents
Current transformer for intelligent electric meter Download PDFInfo
- Publication number
- CN203673952U CN203673952U CN201320861715.7U CN201320861715U CN203673952U CN 203673952 U CN203673952 U CN 203673952U CN 201320861715 U CN201320861715 U CN 201320861715U CN 203673952 U CN203673952 U CN 203673952U
- Authority
- CN
- China
- Prior art keywords
- induction coil
- electromagnetic shielding
- shielding box
- electric meter
- box
- 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
- 230000006698 induction Effects 0.000 claims abstract description 28
- 239000002184 metal Substances 0.000 claims abstract description 19
- 229910052751 metal Inorganic materials 0.000 claims abstract description 19
- 238000009413 insulation Methods 0.000 claims abstract description 17
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 14
- 229910052802 copper Inorganic materials 0.000 claims abstract description 14
- 239000010949 copper Substances 0.000 claims abstract description 14
- 238000005259 measurement Methods 0.000 claims abstract description 13
- 238000005452 bending Methods 0.000 claims description 14
- 230000004888 barrier function Effects 0.000 claims description 3
- 230000005672 electromagnetic field Effects 0.000 abstract description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract 2
- 238000010618 wire wrap Methods 0.000 abstract 1
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
Images
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- Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
Abstract
A current transformer for an intelligent electric meter comprises an induction coil wrapped in an insulation shell, the induction coil comprises an annular iron core and an enamelled wire wrapping the annular iron core, a through hole is formed in the induction coil, the current transformer further comprises a copper strip vertically located in the through hole, the copper strip and the induction coil are located in an electromagnetic shielding box, the electromagnetic shielding box comprises a round metal box and an insulation layer, wherein the round metal box is covered with the insulation layer, the electromagnetic shielding box is further provided with a grounding wire communicated with the round metal box, the head and the tail of the enamelled wire of the induction coil are connected with measurement end wires, and the measurement end wires extend out of the insulation shell and the electromagnetic shielding box. The current transformer for the intelligent electric meter has the advantages that the electromagnetic shielding box exists, and an external electromagnetic field cannot influence inside of the induction coil completely, so that the measurement precision of the intelligent electric meter is greatly improved, and the precision and reliability of the electric meter are improved.
Description
Technical field
The utility model relates to a kind of ammeter accessory, particularly a kind of ammeter Current Transformer.
Background technology
In intelligent electric meter, need current data to gather, what conventionally adopt is that non-contact type collection part adopts current transformer to gather electric current.Current transformer, because the principle that adopts electromagnetic induction is carried out non-contact measurement, is easily subject to the impact of external electromagnetic environment.
Summary of the invention
Easily be subject to the deficiency of the impact of external electromagnetic environment in order to overcome existing electromagnetic transformer, the utility model provides a kind of intelligent electric meter Current Transformer of not allowing to be subject to external electromagnetic environmental impact.
The technical scheme in the invention for solving the technical problem is: a kind of intelligent electric meter Current Transformer, comprise an induction coil being wrapped in insulation crust, described induction coil comprises an annular core and is wrapped in the enamelled wire outside annular core, in described induction coil, be provided with a perforation, also comprise a copper bar, described copper bar is vertically positioned at described perforation, and copper bar expose two outside induction coil respectively horizontal bending be formed with first fold turn of bilge and the second bending part; Described copper bar and induction coil are positioned at an electromagnetic shielding box, described electromagnetic shielding box comprises a round metal box and covers the insulating barrier on round metal box, the top and bottom of described electromagnetic shielding box side are respectively equipped with live wire outlet and live wire lambda line, described first fold turn of bilge connects live wire outlet, and described the second bending part connects live wire lambda line; On described electromagnetic shielding box, be also provided with the ground wire wiring that is communicated with round metal box, the head and tail of the enamelled wire of described induction coil is connected with measurement end line, and described measurement end line stretches out outside insulation crust and electromagnetic shielding box.In described electromagnetic shielding box and insulation crust, injecting insulation plastic cement encapsulates.
For prevention first fold turn of bilge, the second bending part and the short circuit of round metal box Contact, be provided with insulation strip between described first fold turn of bilge, the second bending part and round metal box.
The live wire that the utility model is connected live wire outlet and live wire lambda line respectively intelligent electric meter in use picks out end and live wire incoming end, and ground wire wiring is connected ground wire round metal box is shielded, and measures the wiring board that end line connects intelligent electric meter.The electromagnetic field in the described external world, due to the existence of electromagnetic shielding box, cannot have influence in induction coil completely, thereby the certainty of measurement of intelligent electric meter is improved greatly.
The beneficial effects of the utility model are: extraneous electromagnetic field, due to the existence of electromagnetic shielding box, cannot have influence in induction coil completely, thereby the certainty of measurement of intelligent electric meter is improved greatly, has increased reliability and the accuracy of ammeter.
Accompanying drawing explanation
Fig. 1 is the cutaway view of an embodiment of the utility model.
Fig. 2 is the vertical view of an embodiment of the utility model.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
By reference to the accompanying drawings 1 and 2, a kind of intelligent electric meter Current Transformer, comprise an induction coil being wrapped in insulation crust 1, described induction coil comprises an annular core 2 and is wrapped in the enamelled wire 3 outside annular core 2, in described induction coil, be provided with a perforation 4, also comprise a copper bar 5, described copper bar 5 is vertically positioned at described perforation 4, and copper bar 5 expose two outside induction coil respectively horizontal bending be formed with first fold turn of bilge 6 and the second bending part 7; Described copper bar 5 and induction coil are positioned at an electromagnetic shielding box 8, described electromagnetic shielding box 8 comprises a round metal box 9 and covers the insulating barrier 10 on round metal box 9, the top and bottom of described electromagnetic shielding box 8 sides are respectively equipped with live wire outlet 11 and live wire lambda line 12, described first fold turn of bilge 6 connects live wire outlet 11, and described the second bending part 7 connects live wire lambda line 12; On described electromagnetic shielding box 8, be also provided with the ground wire wiring 13 that is communicated with round metal box 9, the head and tail of the enamelled wire 3 of described induction coil is connected with measures end line 13, and described measurement end line 14 stretches out outside insulation crust 1 and electromagnetic shielding box 8.The interior injection insulation of described electromagnetic shielding box 8 and insulation crust 1 plastic cement encapsulates.
For prevention first fold turn of bilge 6, the second bending parts 7 and the 9 Contact short circuits of round metal box, between described first fold turn of bilge 6, the second bending part 7 and round metal box 9, be provided with insulation strip 14.
The live wire that the utility model is connected live wire outlet 11 and live wire lambda line 12 respectively intelligent electric meter in use picks out end and live wire incoming end, and ground wire wiring 13 is connected ground wire round metal box 9 is shielded, and measures the wiring board that end line 14 connects intelligent electric meter.The electromagnetic field in the described external world, due to the existence of electromagnetic shielding box 8, cannot have influence in induction coil completely, thereby the certainty of measurement of intelligent electric meter is improved greatly.
The beneficial effects of the utility model are: extraneous electromagnetic field, due to the existence of electromagnetic shielding box 8, cannot have influence in induction coil completely, thereby the certainty of measurement of intelligent electric meter is improved greatly, has increased reliability and the accuracy of ammeter.
Claims (2)
1. an intelligent electric meter Current Transformer, comprise an induction coil being wrapped in insulation crust, described induction coil comprises an annular core and is wrapped in the enamelled wire outside annular core, in described induction coil, be provided with a perforation, it is characterized in that: also comprise a copper bar, described copper bar is vertically positioned at described perforation, and copper bar expose two outside induction coil respectively horizontal bending be formed with first fold turn of bilge and the second bending part; Described copper bar and induction coil are positioned at an electromagnetic shielding box, described electromagnetic shielding box comprises a round metal box and covers the insulating barrier on round metal box, the top and bottom of described electromagnetic shielding box side are respectively equipped with live wire outlet and live wire lambda line, described first fold turn of bilge connects live wire outlet, and described the second bending part connects live wire lambda line; On described electromagnetic shielding box, be also provided with the ground wire wiring that is communicated with round metal box, the head and tail of the enamelled wire of described induction coil is connected with measurement end line, and described measurement end line stretches out outside insulation crust and electromagnetic shielding box.
2. intelligent electric meter Current Transformer according to claim 1, is characterized in that: between described first fold turn of bilge, the second bending part and round metal box, be provided with insulation strip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320861715.7U CN203673952U (en) | 2013-12-25 | 2013-12-25 | Current transformer for intelligent electric meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320861715.7U CN203673952U (en) | 2013-12-25 | 2013-12-25 | Current transformer for intelligent electric meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203673952U true CN203673952U (en) | 2014-06-25 |
Family
ID=50970219
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320861715.7U Expired - Lifetime CN203673952U (en) | 2013-12-25 | 2013-12-25 | Current transformer for intelligent electric meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203673952U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105403744A (en) * | 2015-11-28 | 2016-03-16 | 怀化建南机器厂有限公司 | Anti-interference electromagnetic-current-transformer-contained intelligent electric meter with characteristic of rapid mounting and dismounting |
-
2013
- 2013-12-25 CN CN201320861715.7U patent/CN203673952U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105403744A (en) * | 2015-11-28 | 2016-03-16 | 怀化建南机器厂有限公司 | Anti-interference electromagnetic-current-transformer-contained intelligent electric meter with characteristic of rapid mounting and dismounting |
| CN105403744B (en) * | 2015-11-28 | 2018-03-13 | 怀化建南机器厂有限公司 | One kind can fast load and unload anti-tampering electromagnetic current transducer intelligent electric meter |
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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 | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 315300 Ningbo, Cixi, ancient street, the streets of science and technology road, No. 711 Patentee after: NINGBO JIANAN ELECTRONICS CO.,LTD. Address before: 315300 Ningbo, Cixi, ancient street, the streets of science and technology road, No. 711 Patentee before: NINGBO JIANAN ELECTRONICS Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140625 |