CN204178915U - A kind of zero sequence current mutual inductor for route protection - Google Patents
A kind of zero sequence current mutual inductor for route protection Download PDFInfo
- Publication number
- CN204178915U CN204178915U CN201420712967.8U CN201420712967U CN204178915U CN 204178915 U CN204178915 U CN 204178915U CN 201420712967 U CN201420712967 U CN 201420712967U CN 204178915 U CN204178915 U CN 204178915U
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- card base
- shell
- fixed block
- boss
- contact pin
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Abstract
The utility model relates to a kind of zero sequence current mutual inductor for route protection, and it comprises: shell, insulation booth, copper wire winding, right card base, left card base, iron core, boss, left fixed block, left contact pin, right fixed block, right contact pin, insulating resin; Described shell is ring-shaped hollow semi-closed structure, which is provided with left and right card base, boss, and left and right card base is oppositely arranged on the circumferential edges of shell; Boss is positioned at the casing circumference edge in the middle of left and right card base, is all integrated with shell; Described insulation booth is made up of upper cover and lower cover, and both link closely the hollow annulus of composition one; Iron core is that cirque structure is positioned at insulation booth cavity; Described copper wire winding is wound on the circumferentially formation winding of insulation booth uniformly; Left and right fixed block lays respectively at the two ends, left and right of boss.The utility model zero sequence current mutual inductor not only structure is simple, with low cost, and main is that installation is very convenient, runs more reliable, for supply line provides safety guarantee.
Description
Technical field
The utility model belongs to field of electromechanical technology, particularly a kind of zero sequence current mutual inductor for route protection.
Background technology
The general principle of zero-sequence current protection is based on Kirchhoff's current law (KCL): the algebraical sum flowing into the telegram in reply stream of any node in circuit equals zero.Under circuit and the normal situation of electric equipment, the vector of each phase current equals zero, and therefore the secondary side winding no signal of zero sequence current mutual inductor exports, and executive component is failure to actuate.But upon the occurrence of a ground fault; the vector of each phase current is non-vanishing; fault current makes to produce magnetic flux in the annular core of zero sequence current mutual inductor; the secondary side induced voltage executive component action of zero sequence current mutual inductor; drive trip gear; cut off supply network, reach the object of earth fault protection.In the live and work of people; frequent generation electric leakage or line fault; in order to personal safety and property safety; people expect installing zero-sequence transformer in circuit to protect; when there is electric shock or leak current fault in circuit, instrument transformer secondary side exports zero-sequence current, makes the equipment protection action on connect secondary line; cut off the electricity supply, report to the police etc.The operation principle of zero-sequence transformer is substantially all identical, for no other reason than that different manufacturing enterprises, structure can be different.
Utility model content
The purpose of this utility model is to provide simple but easy for installation, the reliable zero sequence current mutual inductor for route protection of a kind of structure.
For a zero sequence current mutual inductor for route protection, it comprises: shell, insulation booth, copper wire winding, right card base, left card base, iron core, boss, left fixed block, left contact pin, right fixed block, right contact pin, insulating resin; Described shell is ring-shaped hollow semi-closed structure, which is provided with right card base, left card base, boss, and right card base, left card base are oppositely arranged on the circumferential edges of shell; Boss is positioned at the casing circumference edge in the middle of right card base, left card base, is all integrated with shell; Described insulation booth is made up of upper cover and lower cover, and both link closely the hollow annulus of composition one; Iron core is that cirque structure is positioned at insulation booth cavity; Described copper wire winding is wound on the circumferentially formation winding of insulation booth uniformly; Left fixed block, right fixed block lay respectively at the two ends, left and right of boss, and described left contact pin, right contact pin are separately fixed on left fixed block, right fixed block; One end of left contact pin, right contact pin is connected with copper wire winding electric respectively; The other end is free end.Described insulating resin is cast in non-blind end and the gap location of shell.
The utility model zero sequence current mutual inductor not only structure is simple, with low cost, and main is that installation is very convenient, runs more reliable, for supply line provides safety guarantee.
Accompanying drawing explanation
Fig. 1 is the front view of the utility model zero sequence current mutual inductor;
Fig. 2 is the left view of the utility model zero sequence current mutual inductor;
Fig. 3 is the structural representation of insulation booth in the utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in detail.
As shown in Figure 1, Figure 2, Figure 3 shows; for a zero sequence current mutual inductor for route protection, it comprises: shell 1, insulation booth 2, copper wire winding 3, right card base 4, left card base 5, iron core 6, boss 7, left fixed block 8, left contact pin 9, right fixed block 10, right contact pin 11, insulating resin 12.Shell 1 is in ring-shaped hollow semi-closed structure, and which is provided with right card base 4, left card base 5, boss 7, right card base 4, left card base 5 are oppositely arranged on the circumferential edges of shell 1; Boss 7 is positioned at shell 1 circumferential edges in the middle of right card base 4, left card base 5, is all integrated with shell 1.Insulation booth 2 is made up of upper cover 13 and lower cover 14, and both link closely the hollow annulus of composition one.Iron core 6 is positioned at insulation booth 2 cavity in cirque structure.Copper wire winding 3 is wound on the circumferentially formation winding of insulation booth 2 uniformly.Left fixed block 8, right fixed block 10 lay respectively at the two ends, left and right of boss 7, and left contact pin 9, right contact pin 11 are separately fixed on left fixed block 8, right fixed block 10.One end of left contact pin 9, right contact pin 11 is electrically connected with copper wire winding 3 respectively; The other end is free end.Described insulating resin 12 is cast in non-blind end and the gap location of shell 1.
The utility model zero sequence current mutual inductor adopts ABS engineering plastics shell, resin-cast becomes hermetically sealed, effectively prevent the corrosion of instrument transformer in Long-Time Service process, good insulation preformance, good looking appearance, have highly sensitive, the linearity good, the feature such as reliable, easy for installation.Its performance is better than general zero sequence current mutual inductor, and the scope of application is extensive, is not only applicable to route protection, can also be applicable to electronics and microcomputer protecting device.User can according to the operational mode of system, and the difference of neutral point effective grounding or neutral non-effective grounding selects the zero sequence current mutual inductor adapted.
Claims (1)
1. for a zero sequence current mutual inductor for route protection, it is characterized in that: this zero sequence current mutual inductor comprises: shell (1), insulation booth (2), copper wire winding (3), right card base (4), left card base (5), iron core (6), boss (7), left fixed block (8), left contact pin (9), right fixed block (10), right contact pin (11), insulating resin (12); Described shell (1), in ring-shaped hollow semi-closed structure, which is provided with right card base (4), left card base (5), boss (7), and right card base (4), left card base (5) are oppositely arranged on the circumferential edges of shell (1); Boss (7) is positioned at shell (1) circumferential edges in the middle of right card base (4), left card base (5), is all integrated with shell (1); Described insulation booth (2) is made up of upper cover (13) and lower cover (14), and both link closely the hollow annulus of composition one; Iron core (6) is positioned at insulation booth (2) cavity in cirque structure; Described copper wire winding (3) is wound on the circumferentially formation winding of insulation booth (2) uniformly; Left fixed block (8), right fixed block (10) lay respectively at the two ends, left and right of boss (7), and described left contact pin (9), right contact pin (11) are separately fixed on left fixed block (8), right fixed block (10); One end of left contact pin (9), right contact pin (11) is electrically connected with copper wire winding (3) respectively; The other end is free end; Described insulating resin (12) is cast in non-blind end and the gap location of shell (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420712967.8U CN204178915U (en) | 2014-11-25 | 2014-11-25 | A kind of zero sequence current mutual inductor for route protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420712967.8U CN204178915U (en) | 2014-11-25 | 2014-11-25 | A kind of zero sequence current mutual inductor for route protection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204178915U true CN204178915U (en) | 2015-02-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420712967.8U Active CN204178915U (en) | 2014-11-25 | 2014-11-25 | A kind of zero sequence current mutual inductor for route protection |
Country Status (1)
| Country | Link |
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| CN (1) | CN204178915U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107369546A (en) * | 2017-09-01 | 2017-11-21 | 贵州鑫湄纳米科技有限公司 | A kind of shell of zero sequence current mutual inductor |
| CN107527715A (en) * | 2017-08-16 | 2017-12-29 | 贵州鑫湄纳米科技有限公司 | A kind of zero sequence current mutual inductor and preparation method thereof |
-
2014
- 2014-11-25 CN CN201420712967.8U patent/CN204178915U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107527715A (en) * | 2017-08-16 | 2017-12-29 | 贵州鑫湄纳米科技有限公司 | A kind of zero sequence current mutual inductor and preparation method thereof |
| CN107369546A (en) * | 2017-09-01 | 2017-11-21 | 贵州鑫湄纳米科技有限公司 | A kind of shell of zero sequence current mutual inductor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |