CN204117831U - A kind of microcomputer protecting device power-type current transformer - Google Patents
A kind of microcomputer protecting device power-type current transformer Download PDFInfo
- Publication number
- CN204117831U CN204117831U CN201420536479.6U CN201420536479U CN204117831U CN 204117831 U CN204117831 U CN 204117831U CN 201420536479 U CN201420536479 U CN 201420536479U CN 204117831 U CN204117831 U CN 204117831U
- Authority
- CN
- China
- Prior art keywords
- protecting device
- microcomputer protecting
- instrument transformer
- winding
- transformer housing
- 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
- 238000004804 winding Methods 0.000 claims abstract description 42
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000000956 alloy Substances 0.000 claims description 9
- 229910045601 alloy Inorganic materials 0.000 claims description 9
- 239000002131 composite material Substances 0.000 claims description 9
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 8
- 229910052710 silicon Inorganic materials 0.000 claims description 8
- 239000010703 silicon Substances 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 5
- 229920003023 plastic Polymers 0.000 claims description 3
- 239000004033 plastic Substances 0.000 claims description 3
- 229920002635 polyurethane Polymers 0.000 claims description 3
- 239000004814 polyurethane Substances 0.000 claims description 3
- 230000001681 protective effect Effects 0.000 abstract description 12
- 230000035699 permeability Effects 0.000 abstract description 5
- 230000006698 induction Effects 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Landscapes
- Transformers For Measuring Instruments (AREA)
Abstract
The utility model relates to a kind of microcomputer protecting device power-type current transformer, comprise instrument transformer housing, instrument transformer housing is provided with the test port wearing and treat side wire, two windings are provided with in described instrument transformer housing, two windings are wound on the iron core of two corresponding test ports respectively, or two windings are all wound on the iron core of a corresponding test port, wherein winding to be powered external microcomputer protecting device through the secondary lead wires be arranged on instrument transformer housing, another winding is powered through the secondary lead wires be arranged on instrument transformer housing the trigger of external microcomputer protecting device.Difference coiling power supply winding and protective winding on two iron cores; before in the wire passing winding, primary current numerical value does not reach rated primary current; enough startup electric energy are provided to microcomputer protecting device; and low permeability state is operated under normal current; when be short-circuited in circuit fault time; because saturation induction density is high, the protective current of enough normal primary current multiple can be provided to provide flip-flop operation signal to microcomputer protecting device, play a protective role.
Description
Technical field
The utility model relates to a kind of power-type current transformer, specifically a kind of current transformer providing power supply and flip-flop operation signal to microcomputer protecting device.
Background technology
Microcomputer protecting device is monitored voltage and electric current in switch cubicle circuit, breaker control, breakdown judge and realize the functions such as fault actions warning; it is the visual plant ensureing safe operation of power system; in recent years along with electric power facility construction investment increases, the demand of microcomputer protecting device is also increased.Existing microcomputer protecting device is by the power taking of external AC c-power supply, or sets up power supply unit, external power supply and the hold facility installing space set up, and brings impacts such as using complexity, cost are high, potential safety hazard to the Long-Time Service of Microcomputer Protection.
Summary of the invention
In order to solve above-mentioned deficiency of the prior art, the utility model provides the current transformer that a kind of charged and flip-flop operation signal are integrated.
The technical solution adopted in the utility model is: a kind of microcomputer protecting device power-type current transformer, comprise instrument transformer housing, instrument transformer housing is provided with the test port wearing and treat side wire, it is characterized in that: in described instrument transformer housing, be provided with two windings, two windings are wound on the iron core of two corresponding test ports respectively, or two windings are all wound on the iron core of a corresponding test port, wherein winding to be powered external microcomputer protecting device through the secondary lead wires be arranged on instrument transformer housing, another winding is powered through the secondary lead wires be arranged on instrument transformer housing the trigger of external microcomputer protecting device.
Further, a winding technique of the external microcomputer protecting device of described power supply is on composite alloy iron core, and the another winding technique of the external microcomputer protecting device trigger of described power supply is on silicon sheet core.
Again further, described instrument transformer housing is polyurethane plastics shell.
After adopting technique scheme, the beneficial effects of the utility model are: coiling power supply winding on composite alloy iron core, before primary current numerical value does not reach rated primary current in the wire passing winding, provide enough startup electric energy to microcomputer protecting device; Start electric energy to be decided by the sectional area of composite alloy iron core and the number of turns of secondary winding; power supply winding have employed magnetic permeability is very high, saturation induction density is lower composite alloy iron core as magnetic conduction material; initial permeability is high; when the number of turn and magnetic flux density certain; power output is large; direct power taking from current circuit; just enough startup electric energy can be provided by microcomputer protecting device before primary current numerical value does not reach rated primary current; avoid and cause equipment to start because circuit instability allows, for switch cubicle has saved space and cost.Coiling protective winding on silicon sheet core; flip-flop operation signal is provided to microcomputer protecting device; protective winding adopts initial magnetic permeability low; the silicon sheet core that saturation induction density is high; under normal current, be operated in low permeability state, when be short-circuited in circuit fault time, because saturation induction density is high; the protective current of enough normal primary current multiple can be provided to provide flip-flop operation signal to microcomputer protecting device, play a protective role.
Accompanying drawing explanation
Fig. 1 is main TV structure figure of the present utility model;
Fig. 2 is left TV structure figure of the present utility model;
In figure: instrument transformer housing 1, power supply winding 2, power supply winding secondary lead wires 21, protective winding 3, protective winding secondary lead wires 31, composite alloy iron core 4, silicon sheet core 5.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in further detail.
Shown in Fig. 1,2, a kind of microcomputer protecting device power-type current transformer comprises instrument transformer housing 1, power supply winding 2, protective winding 3, composite alloy iron core 4 and silicon sheet core 5.Instrument transformer housing 1 is polyurethane plastics shell, instrument transformer housing 1 is provided with the test port wearing and treat side wire, power supply winding 2 and protective winding 3 is provided with in described instrument transformer housing, power supply winding 2 is wound on composite alloy iron core 4, protective winding 3 is wound on silicon sheet core 5, composite alloy iron core 4 and the corresponding test port of silicon sheet core 5, instrument transformer housing 1 is provided with power supply winding secondary lead wires 21 and power supply winding secondary lead wires 21, power supply winding secondary lead wires 21 is powered external microcomputer protecting device, power supply winding secondary lead wires 21 is powered the trigger of external microcomputer protecting device.
Claims (3)
1. a microcomputer protecting device power-type current transformer, comprise instrument transformer housing, instrument transformer housing is provided with the test port wearing and treat side wire, it is characterized in that: in described instrument transformer housing, be provided with two windings, two windings are wound on the iron core of two corresponding test ports respectively, or two windings are all wound on the iron core of a corresponding test port, wherein winding to be powered external microcomputer protecting device through the secondary lead wires be arranged on instrument transformer housing, another winding is powered through the secondary lead wires be arranged on instrument transformer housing the trigger of external microcomputer protecting device.
2. a kind of microcomputer protecting device power-type current transformer according to claim 1; it is characterized in that: a winding technique of the external microcomputer protecting device of described power supply is on composite alloy iron core, and the another winding technique of the external microcomputer protecting device trigger of described power supply is on silicon sheet core.
3. a kind of microcomputer protecting device power-type current transformer according to claim 1, is characterized in that: described instrument transformer housing is polyurethane plastics shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420536479.6U CN204117831U (en) | 2014-09-18 | 2014-09-18 | A kind of microcomputer protecting device power-type current transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420536479.6U CN204117831U (en) | 2014-09-18 | 2014-09-18 | A kind of microcomputer protecting device power-type current transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204117831U true CN204117831U (en) | 2015-01-21 |
Family
ID=52335119
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420536479.6U Expired - Lifetime CN204117831U (en) | 2014-09-18 | 2014-09-18 | A kind of microcomputer protecting device power-type current transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204117831U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104252961A (en) * | 2014-09-18 | 2014-12-31 | 江苏科兴电器有限公司 | Power-supply type current transformer for microcomputer protection device |
-
2014
- 2014-09-18 CN CN201420536479.6U patent/CN204117831U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104252961A (en) * | 2014-09-18 | 2014-12-31 | 江苏科兴电器有限公司 | Power-supply type current transformer for microcomputer protection device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20150121 |
|
| CX01 | Expiry of patent term |