CN208173350U - A kind of zero sequence current mutual inductor - Google Patents
A kind of zero sequence current mutual inductor Download PDFInfo
- Publication number
- CN208173350U CN208173350U CN201820486277.3U CN201820486277U CN208173350U CN 208173350 U CN208173350 U CN 208173350U CN 201820486277 U CN201820486277 U CN 201820486277U CN 208173350 U CN208173350 U CN 208173350U
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- shell
- skeleton
- sequence current
- zero sequence
- current mutual
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Abstract
The utility model discloses a kind of zero sequence current mutual inductors, including shell, skeleton, shielded layer, magnetic core；The magnetic core for winding wired packet is located in skeleton, and surrounding is surrounded with shielded layer on the outside of skeleton, is provided with shell on the outside of shielded layer；Shell and skeleton are the shell structure of upper ring surface opening；The conducting wire fairlead of filler sprue gate and coil is provided on shell, skeleton is correspondingly arranged on the conducting wire outlet of coil；The intracorporal cavity hole of shell is filled by filler material；The cross section of shell and skeleton is U-shaped structure；The filler sprue gate of shell outwardly protrudes；The top edge of skeleton extends outwardly.Present apparatus structure is simple and convenient to operate, is reproducible, measurement accuracy is high, can be effectively reduced the short circuit phenomenon of the leakage field and line packet and shielding interlayer in zero sequence current mutual inductor use process.
Description
Technical field
The utility model belongs to technical field of electric power, and in particular to a kind of zero sequence current mutual inductor.
Background technique
The basic principle of zero-sequence current protection is based on Kirchhoff's current law (KCL)：Flow into the telegram in reply of any node in circuit
The algebraical sum of stream is equal to zero.Under route and the normal situation of electrical equipment, the vector sum of each phase current is equal to zero, therefore, zero
The secondary side winding no signal of sequence current transformer exports, and executive component is failure to actuate.It is each when electric shock or leak current fault occurs
The vector sum of phase current is not zero, and fault current makes to generate magnetic flux in the iron core of zero sequence current mutual inductor, zero sequence current mutual inductor
Generated electric current is zero-sequence current.When electric shock or leak current fault occur in circuit, zero sequence current mutual inductor secondary side is defeated
Zero-sequence current out acts the equipment protection on connect secondary line, such as cuts off the power, alarms.
In use, can be because there is leakage field and caused by shielded layer is dealt with improperly in existing zero sequence current mutual inductor
The short circuit of line packet and shielding interlayer, to influence its practical performance indicator.
Utility model content
The purpose of the utility model is to overcome defect existing in the prior art, provide that a kind of structure is simple, operation side
Just, zero sequence current mutual inductor reproducible, measurement accuracy is high, the mutual inductor can be effectively reduced zero sequence current mutual inductor use
The short circuit phenomenon of leakage field and line packet and shielding interlayer in the process.
To achieve the above object, there is provided a kind of zero sequence current mutual inductors, including shell for the technical solution of the utility model
Body, skeleton, shielded layer, magnetic core；The magnetic core for winding wired packet is located in skeleton, and surrounding is surrounded with shielded layer on the outside of skeleton,
Shell is provided on the outside of shielded layer.
Preferably, the shell and skeleton are the shell structure of upper ring surface opening.
Preferably, it is provided with the conducting wire fairlead of filler sprue gate and coil on the housing, it is corresponding in the skeleton
It is provided with the conducting wire outlet of coil.
Preferably, the intracorporal cavity hole of the shell is filled by filler material.
Preferably, the cross section of the shell and skeleton is U-shaped structure.
Preferably, the filler sprue gate of the shell outwardly protrudes.
Preferably, the top edge of the skeleton extends outwardly.
The advantages of the utility model and beneficial effect are：
1, line packet and shielding interlayer are provided with plastic skeleton, not only reduce magnetic flux leakage, also effectively avoid line packet and shielding
Short circuit between layer；
2, skeleton and shell are both designed as the shell structure of upper ring surface opening, so that filler material pouring technology is simple, effectively
Improve production efficiency.
Detailed description of the invention
Fig. 1 is zero sequence current mutual inductor overall structure diagram；
Fig. 2 is the conducting wire fairlead position A-A sectional view of zero sequence current mutual inductor coil；
Fig. 3 is the conducting wire fairlead position A-A sectional view enlarged drawing of zero sequence current mutual inductor coil.
Description of symbols：
1, shell；2, skeleton；3, shielded layer；4, magnetic core；5, the conducting wire outlet of coil；6, filler sprue gate；7, coil
Conducting wire fairlead.
Specific embodiment
With reference to the accompanying drawings and examples, specific embodiment of the present utility model is further described.Implement below
Example is only used for clearly illustrating the technical solution of the utility model, and cannot be used as a limitation the protection model of limitation the utility model
It encloses.
As shown in Figure 1, a kind of zero sequence current mutual inductor, including shell 1, skeleton 2, shielded layer 3, magnetic core 4；Wind wired packet
Magnetic core 4 be located in skeleton 2,2 outside surrounding of skeleton is surrounded with shielded layer 3, and shell 1 is provided on the outside of shielded layer 3.
As shown in Figures 2 and 3, the shell 1 and skeleton 2 are the shell structure of upper ring surface opening；It is set on the shell 1
It is equipped with the conducting wire fairlead 7 of filler sprue gate 6 and coil, is correspondingly arranged on the conducting wire outlet 5 of coil in the skeleton 2；Institute
The cross section for stating shell 1 and skeleton 2 is U-shaped structure；The filler sprue gate 6 of the shell 1 outwardly protrudes；The skeleton 2
Top edge extends outwardly.
Embodiment 1
The magnetic core 4 of line cladding winding is placed in the skeleton 2 of upper ring surface opening, and the conducting wire that the conducting wire of coil is mounted on coil is drawn
5 positions of mouth, 2 outside surrounding of skeleton are surrounded with shielded layer 3, and the shell 1 of upper ring surface opening, line are provided on the outside of shielded layer 3
The conducting wire of circle is mounted on 7 position of conducting wire fairlead of coil, injects epoxy resin from filler sprue gate 6.
It is silicon steel material that preferred mode, which is the shielded layer, in the present embodiment, and the skeleton is plastic material.
Preferred mode is that the intracorporal cavity hole of the shell is filled by epoxy resin in the present embodiment.
The above is only the preferred embodiment of the utility model, it is noted that for the common skill of the art
For art personnel, without deviating from the technical principle of the utility model, several improvements and modifications can also be made, these change
It also should be regarded as the protection scope of the utility model into retouching.
Claims (6)
1. a kind of zero sequence current mutual inductor, it is characterised in that：Including shell, skeleton, shielded layer, magnetic core；Wind the magnetic of wired packet
Core is located in skeleton, and surrounding is surrounded with shielded layer on the outside of skeleton, is provided with shell on the outside of shielded layer；The shell and skeleton
It is the shell structure of upper ring surface opening.
2. a kind of zero sequence current mutual inductor as described in claim 1, it is characterised in that：Filler is provided on the housing to pour
The conducting wire fairlead of geat and coil is correspondingly arranged on the conducting wire outlet of coil in the skeleton.
3. a kind of zero sequence current mutual inductor as claimed in claim 2, it is characterised in that：The intracorporal cavity hole of shell is by filling out
Charge filling.
4. a kind of zero sequence current mutual inductor as described in claim 1, it is characterised in that：The cross section of the shell and skeleton is equal
For U-shaped structure.
5. a kind of zero sequence current mutual inductor as claimed in claim 4, it is characterised in that：The filler sprue gate of the shell is outside
Protrusion.
6. a kind of zero sequence current mutual inductor as claimed in claim 4, it is characterised in that：The top edge of the skeleton is to extension
It stretches.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820486277.3U CN208173350U (en) | 2018-04-08 | 2018-04-08 | A kind of zero sequence current mutual inductor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820486277.3U CN208173350U (en) | 2018-04-08 | 2018-04-08 | A kind of zero sequence current mutual inductor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208173350U true CN208173350U (en) | 2018-11-30 |
Family
ID=64371948
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820486277.3U Active CN208173350U (en) | 2018-04-08 | 2018-04-08 | A kind of zero sequence current mutual inductor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208173350U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110211787A (en) * | 2019-07-05 | 2019-09-06 | 北京博远寰宇电子科技有限公司 | A kind of open-type residual current transformer and processing technology |
| CN111030315A (en) * | 2019-12-03 | 2020-04-17 | 广东电科院能源技术有限责任公司 | Wireless charging system of underwater equipment, coil of wireless charging system and maximum power tracking method |
| CN112509784A (en) * | 2019-12-26 | 2021-03-16 | 兰州空间技术物理研究所 | Transformer suitable for ionic electric propulsion system power supply processing unit |
-
2018
- 2018-04-08 CN CN201820486277.3U patent/CN208173350U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110211787A (en) * | 2019-07-05 | 2019-09-06 | 北京博远寰宇电子科技有限公司 | A kind of open-type residual current transformer and processing technology |
| CN111030315A (en) * | 2019-12-03 | 2020-04-17 | 广东电科院能源技术有限责任公司 | Wireless charging system of underwater equipment, coil of wireless charging system and maximum power tracking method |
| CN112509784A (en) * | 2019-12-26 | 2021-03-16 | 兰州空间技术物理研究所 | Transformer suitable for ionic electric propulsion system power supply processing unit |
| CN112509784B (en) * | 2019-12-26 | 2023-09-22 | 兰州空间技术物理研究所 | Transformer suitable for power supply processing unit of ion type electric propulsion system |
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