CN2366854Y - Anti fraudulent use type current mutual inductor - Google Patents
Anti fraudulent use type current mutual inductor Download PDFInfo
- Publication number
- CN2366854Y CN2366854Y CN 99225572 CN99225572U CN2366854Y CN 2366854 Y CN2366854 Y CN 2366854Y CN 99225572 CN99225572 CN 99225572 CN 99225572 U CN99225572 U CN 99225572U CN 2366854 Y CN2366854 Y CN 2366854Y
- Authority
- CN
- China
- Prior art keywords
- electricity
- mutual inductor
- fraudulent use
- utility
- secondary coil
- 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
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Abstract
The utility model relates to an anti fraudulent use type current mutual inductor, which is provided with a connecting wire of a voltage coil of a watt-hour meter and an anti fraudulent use electric cover. The utility model is characterized in that a root of conductor wire is led out from a primary busbar of a current transformer to a casing, and the conductor wire is used for connecting the voltage coil of the watt-hour meter; a connecting terminal U is reserved on the casing of the outer part of an inductor body; the utility model is provided with the anti fraudulent use electric cover which carries out the seal to secondary terminals K1 and K2 of the current mutual inductor and the U terminal.
Description
This anti-electricity-theft current transformer is to have electric energy meter potential winding terminals and anti-electricity-theft cover in the current transformer about electric energy metrical of utility model, particularly device body.
Along with development of electric power industry, current transformer in original low-voltage electric energy metrical cabinet, because the defective of himself is eliminated, yet also have many like products in time not change in the existing electrical network, reason is exactly not have suitable product that the user is directly changed on original metering cabinet.This situation has had a strong impact on electric energy tariffing work.Because in electric energy tariffing work, potential winding and current coil arranged in the electric energy meter that is used to charge, and its potential winding leak meter often from loss, though the ratio that this part loss accounts for is very little, but because the low-temperature measurement user has a large capacity and a wide range, then total cumulative amount is still very considerable.
Anti-electricity-theft current transformer purpose of the present utility model is to provide a kind of above-mentioned shortcoming that overcomes, can come loss is carried out by the compensation iron core and the compensation number of turn rightly, make the ratio of a secondary current accurate to satisfy precision, make electric energy tariffing work accurately improving anti-stealing electricity function, thereby satisfy old product in the performance and the requirement of installing.
Anti-electricity-theft current transformer purpose of the present utility model is achieved in that mutual inductor contains annular core, and secondary coil is along radially evenly coiling of iron core, and primary conductive row passes from the center pit of secondary coil.In order to make electric energy metrical accurate, draw a pressure-wire to terminals " U " from an end of busbar, for user's attaching electrical energy meter electricity hydraulic circuit,, also use the secondary connection end K of a case with current transformer for preventing electricity filching behavior
1, K
2Reach U terminal cover and seal, and be furnished with the sealing lead screw.
Described current transformer is characterized in that: mutual inductor surface mark face L, K printed words, when primary current from L
1During inflow, secondary current is by K
1Through outside get back to K
2, at this moment, mutual inductor is a subtractive polarity.
After tested, the anti-electricity-theft current transformer of the utility model is not because primary line has solder joint, increase reliability, and low ampere turns satisfies current error, has improved manufacturability, with the connecting line of the electrical energy meter electricity hydraulic circuit mutual inductor inside of packing into, improve burglar-proof measure, and the employing glass fibre reinforced plastics casing, fire prevention, antifouling makes product firm and durable more.
Below in conjunction with accompanying drawing the anti-electricity-theft current transformer of the utility model is further described.
Fig. 1 is the utility model product front view.
Fig. 2 is the utility model product vertical view.
Fig. 3 is the utility model product cardinal principle figure.
Fig. 1,2 is the master of the utility model product, vertical view, it comprises anti-electricity-theft cover 1, housing 2, end-blocking lid 3, a busbar 4, sealing lead screw 5, secondary line chart (comprising iron core) 6, assembly unit screw 7, footing 8, nameplate 9, " U " terminal embedding 10, the utility model product adopts annular core, secondary line evenly is wound on the iron core, one time busbar 4 also passes from secondary coil 6 centers, jump ring is fixed in busbar 4 usefulness two end-blocking lids 3, end-blocking lid 3 can 90 ° of bearing changes, to make things convenient for the user busbar 4 to be connected the selection in orientation, coil 6 is encapsulated in the left and right sides housing 2 after the assembly unit, housing 2 is glass-reinforced plastic material with end-blocking lid 3, in the manufacturing of housing 2 with secondary connection end inserts " K
1, K
2" and potential winding union end inserts " U " 10 be compressed in the housing 2, footing 8 is the cold-reduced sheet drawing, with screw 7 and housing 2 firm attachings.
Fig. 3 is product cardinal principle figure, when once passing to I
1Electric current, then secondary coil induces I
2Electric current gets according to magnetic induction principle: I
1N
1=L
2N
2→ I
2=I
1N
1/ N
2, because of lossy in the magnetic potential transfer process, then actual I
2≈ I
1N
1/ N
2If require the ratio of a secondary current very accurate, then to come loss is compensated, to satisfy precision by the compensation iron core 11 and the compensation number of turn.In addition, for making charging more accurately and improve anti-stealing electricity function, the lead that this product will connect the electrical energy meter electricity hydraulic circuit is packed in the mutual inductor body, and leaves terminals " U " on one's body at device.
Claims (2)
1, a kind of anti-electricity-theft current transformer that is used for electric energy metrical, comprise annular core, evenly be wound on the secondary coil on the annular core, a busbar that passes from the secondary coil center pit, contain annular core and secondary coil left and right sides housing, be arranged on the secondary coil terminals K of housing
1, K
2, it is characterized in that: potential winding union end U is set on housing.
2, anti-electricity-theft current transformer according to claim 1, its feature is outside equipped with terminals K with described secondary coil at described housing
1, K
2Anti-electricity-theft cover with the terminals lead sealing of potential winding U.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99225572 CN2366854Y (en) | 1999-01-27 | 1999-01-27 | Anti fraudulent use type current mutual inductor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99225572 CN2366854Y (en) | 1999-01-27 | 1999-01-27 | Anti fraudulent use type current mutual inductor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2366854Y true CN2366854Y (en) | 2000-03-01 |
Family
ID=34015420
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99225572 Expired - Fee Related CN2366854Y (en) | 1999-01-27 | 1999-01-27 | Anti fraudulent use type current mutual inductor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2366854Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104715914A (en) * | 2015-04-01 | 2015-06-17 | 浙江天际互感器有限公司 | Automatic detecting type outdoor low-voltage metering current transformer |
| CN104992621A (en) * | 2015-07-20 | 2015-10-21 | 河南江雁电气有限公司 | Magnetic induction type electronic seal |
| CN107644723A (en) * | 2017-10-24 | 2018-01-30 | 国网上海市电力公司 | A kind of anti-electricity-theft device of low pressure straight-through current transformer voltage link |
-
1999
- 1999-01-27 CN CN 99225572 patent/CN2366854Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104715914A (en) * | 2015-04-01 | 2015-06-17 | 浙江天际互感器有限公司 | Automatic detecting type outdoor low-voltage metering current transformer |
| CN104715914B (en) * | 2015-04-01 | 2017-09-05 | 浙江天际互感器有限公司 | It is a kind of can automatic calibration outdoor low voltage metering current mulual inductor |
| CN104992621A (en) * | 2015-07-20 | 2015-10-21 | 河南江雁电气有限公司 | Magnetic induction type electronic seal |
| CN107644723A (en) * | 2017-10-24 | 2018-01-30 | 国网上海市电力公司 | A kind of anti-electricity-theft device of low pressure straight-through current transformer voltage link |
| CN107644723B (en) * | 2017-10-24 | 2019-11-26 | 国网上海市电力公司 | A kind of anti-electricity-theft device of low pressure straight-through current transformer voltage link |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CU03 | Correction of utility model patent gazette |
Correction item: Designer Correct: Ni Zenghua False: Ni Zengyuan Number: 9 Volume: 16 |
|
| ERR | Gazette correction |
Free format text: CORRECT: DESIGNER; FROM: NI ZENGYUAN TO: NI ZENGHUA |
|
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |