CN2711870Y - Current mutual inductor - Google Patents
Current mutual inductor Download PDFInfo
- Publication number
- CN2711870Y CN2711870Y CN 200420067498 CN200420067498U CN2711870Y CN 2711870 Y CN2711870 Y CN 2711870Y CN 200420067498 CN200420067498 CN 200420067498 CN 200420067498 U CN200420067498 U CN 200420067498U CN 2711870 Y CN2711870 Y CN 2711870Y
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- CN
- China
- Prior art keywords
- mutual inductor
- current mutual
- secondary winding
- out wire
- current
- 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
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Abstract
The utility model discloses a current mutual inductor, comprising a primary winding, the lead out wire of the primary winding, an iron core, a secondary winding and the lead out wire of the secondary winding. A resistor is connected between the lead out wires of the secondary winding in parallel. Current signals are input into the current mutual inductor, and the current mutual inductor directly output voltage signals that are not influenced by external environment. The current mutual inductor has high voltage signal accuracy, reduces accessory equipment mounted at the outer part of the current mutual inductor, and has simple circuit structure, low cost, small size and easy production.
Description
The utility model belongs to a kind of current transformer.
Present known GB current transformer is made up of two windings, and winding and secondary winding have insulating material between two windings, and one time winding is connected on the tested current circuit, and the current signal of secondary winding output is connected on the electrical instrumentation.And on some fields such as railway locomotive, often need to obtain voltage signal.One cover auxiliary circuit normally is installed outside current transformer again, is converted current signal to voltage signal by auxiliary circuit, the voltage signal accuracy that this method is obtained is low, is subject to environmental impacts such as vibrations, circuit structure complexity, cost height.
The utility model solves the above-mentioned problems in the prior art exactly, and a kind of current transformer that can directly the current signal of input be transformed into voltage signal is provided.
For addressing the above problem, technical solution of the present utility model is: a kind of current transformer, it comprises winding and lead-out wire, iron core, secondary winding and lead-out wire thereof, it is characterized in that between the lead-out wire of secondary winding and connect a resistance, with iron core, secondary winding with resistance potting be in the same place.
Because the utility model is between the lead-out wire of secondary winding and connect a resistance, the current signal of original current transformer output has been transformed into voltage signal, it is through the resistance of debugging resistance, the number of turn of coil, make between the voltage of the electric current of input and output a strict ratio is arranged, after its potting, this ratio can not change again, so the voltage signal that the utility model is directly exported is not subjected to the influence of external environment, voltage signal accuracy height, and reduced the outside auxiliary equipment of installing of current transformer, circuit structure is simple, and cost is low, volume is little, is easy to make.
Below in conjunction with accompanying drawing the utility model is further described:
Fig. 1 is an electrical block diagram of the present utility model;
Fig. 2 is a mechanical structure schematic diagram of the present utility model.
As shown in Figure 1 and Figure 2, a kind of current transformer of present embodiment, it comprises winding 1 and lead-out wire thereof, unshakable in one's determination 2, secondary winding 3 and lead-out wire 5 thereof, a winding 1 is a punching coil, by using producer to provide, secondary winding is wrapped on unshakable in one's determination 2, and it is made up of lattice coil, at 5 of the lead-out wires of secondary winding 3 and connect a resistance 4, with iron core 2, secondary winding 3 with resistance 4 pottings be in the same place.The resistance 4 of present embodiment is wire-wound resistor.
Claims (2)
1, a kind of current transformer, it comprises a winding (1) and lead-out wire, iron core (2), secondary winding (3) and lead-out wire (5) thereof, it is characterized in that between the lead-out wire (5) of secondary winding (3) and connect a resistance (4), together iron core (2), secondary winding (3) and resistance (4) potting.
2, instrument transformer according to claim 1 is characterized in that described resistance (4) is wire-wound resistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420067498 CN2711870Y (en) | 2004-06-23 | 2004-06-23 | Current mutual inductor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420067498 CN2711870Y (en) | 2004-06-23 | 2004-06-23 | Current mutual inductor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2711870Y true CN2711870Y (en) | 2005-07-20 |
Family
ID=36192970
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420067498 Expired - Lifetime CN2711870Y (en) | 2004-06-23 | 2004-06-23 | Current mutual inductor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2711870Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109036812A (en) * | 2017-06-12 | 2018-12-18 | 天津市中力神盾电子科技有限公司 | current collecting device |
-
2004
- 2004-06-23 CN CN 200420067498 patent/CN2711870Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109036812A (en) * | 2017-06-12 | 2018-12-18 | 天津市中力神盾电子科技有限公司 | current collecting device |
| CN109036812B (en) * | 2017-06-12 | 2024-04-12 | 天津市中力神盾电子科技有限公司 | Current acquisition device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20140623 Granted publication date: 20050720 |