CN208848741U - A kind of zero sequence current mutual inductor - Google Patents
A kind of zero sequence current mutual inductor Download PDFInfo
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- CN208848741U CN208848741U CN201821885568.6U CN201821885568U CN208848741U CN 208848741 U CN208848741 U CN 208848741U CN 201821885568 U CN201821885568 U CN 201821885568U CN 208848741 U CN208848741 U CN 208848741U
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- mutual inductor
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- inductor ontology
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Abstract
A kind of zero sequence current mutual inductor, it include mutual inductor ontology, the mutual inductor ontology includes horseshoe iron core, the horseshoe iron core it is opening down, the left and right side of the horseshoe iron core is wound with left coil and right coil respectively, the horseshoe iron core and left coil, right coil is poured by epoxy resin builds up an entirety, the mutual inductor ontology is provided centrally with threading hole, the lower part of the mutual inductor ontology left and right side is respectively arranged with fixed block, the fixed block protrudes from mutual inductor ontology, fixing bolt is provided on the fixed block, the lower part of the threading hole is provided with limited block, there is buckle to fix between the limited block and mutual inductor ontology, the outside of the mutual inductor ontology is provided with shielding case, the top of the shielding case is equipped with the cover, the zero sequence current mutual inductor is convenient for disassembly and assembly, protecting effect is good.
Description
Technical field
The utility model relates to a kind of zero sequence current mutual inductors.
Background technique
The primary coil of ordinary electric current mutual-inductor is only connected with protected circuit, and the electric current in primary coil is exactly this
The load current of phase, secondary current is then the analog value of primary current, and zero sequence current mutual inductor is quite different, its primary coil
It is exactly the three-phase of protected circuit, in normal state, since the vector sum of three-phase current is zero, magnetic flux will not be generated in iron core
, therefore there will not be induced current in secondary coil, and when singlephase earth fault occurs by protective loop, the vector of three-phase current
It is no longer zero, it is equal to three times of every phase zero-sequence current, at this point, inducting flux is just generated in the iron core of mutual inductor, secondary line
There to be induced current in circle, so that starting relay acts protective device.
Zero sequence current mutual inductor can effective protection personal safety, however existing zero sequence current mutual inductor exist it is inconvenient
It dismounts, the disadvantage of protecting effect difference.
Utility model content
In view of this, the utility model aim is to provide a kind of zero sequence current mutual inductor convenient for disassembly and assembly, protecting effect is good.
In order to solve the above-mentioned technical problem, the technical solution of the utility model is:
A kind of zero sequence current mutual inductor includes mutual inductor ontology, and the mutual inductor ontology includes horseshoe iron core, described
Horseshoe iron core it is opening down, the left and right side of the horseshoe iron core is wound with left coil and right coil, the horseshoe respectively
Iron core and left coil, right coil are poured by epoxy resin builds up an entirety, and the mutual inductor ontology is provided centrally with threading hole,
The lower part of the mutual inductor ontology left and right side is respectively arranged with fixed block, and the fixed block protrudes from mutual inductor ontology, institute
It states and is provided with fixing bolt on fixed block, the lower part of the threading hole is provided with limited block, the limited block and mutual inductor ontology
Between there is buckle to fix, the outside of the mutual inductor ontology is provided with shielding case, and the top of the shielding case is equipped with the cover.
Preferably, the left coil and the end of a thread on right coil top are connected with each other, at left and right sides of the mutual inductor ontology
Lower part be all equipped with pin, described two pins are connected with the end of a thread of left coil and right coil lower part respectively, make mutual inductor sheet
The coil turn in internal portion is more, not only ensure that the performance of original mutual inductor, also improves the energy of mutual inductor carrying super-high-current
Power ensure that mutual inductor normal operation of circuit breaker under overload current.
Preferably, the limited block is poured by epoxy resin, the mutual inductor ontology is arranged in the shape of a hoof, described
Limited block is located at the inside of mutual inductor ontology, and the lower part flush of the limited block and mutual inductor ontology makes limited block and mutual inductance
Device ontology constitutes an entirety, and the top of the limited block is arc-shaped and constitutes the threading hole, primary side with mutual inductor ontology
Electric wire passes through threading hole, and limited block can prevent primary side electric wire from moving down, influence the effect of mutual inductor ontology.
Preferably, the two sides of the limited block are provided with card slot, be provided on the inside of the mutual inductor ontology with it is described
The corresponding holding strip of card slot, the buckle are located at the junction of mutual inductor ontology and limited block lower part, make limited block and mutual inductance
Device body construction is firm.
Preferably, the shielding case covers on the outside of mutual inductor ontology, the shielding case is equipped with wire guide, facilitates one
The conducting wire of secondary side passes through, and the shielding case is conductive metal mesh shielding case, can effectively reduce external magnetic field to mutual inductor ontology
Interference, the shielding case fixed by the fixing bolt, makes its stable structure.
The utility model has the technical effect that following aspect: conveniently tearing open due to being provided in mutual inductor body interior
The limited block unloaded makes mutual inductor ontology easy disassembly, since mutual inductor body exterior is provided with shielding case, can effectively shield outer
The interference magnetic field in portion, keeps the protecting effect of mutual inductor ontology more preferable.
Detailed description of the invention
Fig. 1 is the perspective view of the zero sequence current mutual inductor of the utility model.
Fig. 2 is the structural schematic diagram of the shielding case of the utility model.
Fig. 3 is the side view of the limited block of the utility model.
Fig. 4 is the mutual inductor ontology of the utility model and the bottom view of limited block.
Specific embodiment
Below in conjunction with attached drawing, specific embodiment of the present utility model is described in further detail, so that the utility model skill
Art scheme is more readily understood and grasps.
In the present embodiment, it is to be understood that term " centre ", "upper", "lower", " top ", " right side ", " left end ",
" top ", " back side ", " middle part ", etc. instructions orientation or positional relationship be based on the orientation or positional relationship shown in the drawings, only
It is of the invention for ease of description, rather than the device or element of indication or suggestion meaning must have a particular orientation, with spy
Fixed orientation construction and operation, therefore be not considered as limiting the invention.
In addition, the connection or fixed form between component if not otherwise specified in this embodiment, connection or solid
Determine mode can for fixed by bolt commonly used in the prior art or pin fix or pin shaft connection etc. modes, therefore, this
It is no longer described in detail in embodiment.
With reference to Fig. 1-4, a kind of zero sequence current mutual inductor includes mutual inductor ontology, and the mutual inductor ontology includes horse
Shoes core 1, the horseshoe iron core 1 it is opening down, the left and right side of the horseshoe iron core 1 is wound with 21 He of left coil respectively
Right coil 22, the end of a thread on 22 top of the left coil 21 and right coil are connected with each other, at left and right sides of the mutual inductor ontology under
Portion is all equipped with pin 5, and described two pins 5 are connected with the end of a thread of 22 lower part of left coil 21 and right coil respectively, makes mutual inductor
The coil turn of body interior is more, not only ensure that the performance of original mutual inductor, also improves mutual inductor carrying super-high-current
Ability, ensure that mutual inductor normal operation of circuit breaker under overload current, the horseshoe iron core 1 and left coil 21, right coil
22, which pour 3 by epoxy resin, builds up an entirety, and the mutual inductor ontology is provided centrally with threading hole 4, the mutual inductor ontology
The lower part of left and right side is respectively arranged with fixed block 7, the fixed block 7 and this body by integral forming of mutual inductor, the fixed block 7
Mutual inductor ontology is protruded from, fixing bolt 71 is provided on the fixed block 7, the lower part of the threading hole 4 is provided with limited block
6, have buckle 61 fixed between the limited block 6 and mutual inductor ontology, the buckle 61 is circle, the buckle 61 it is solid on one side
Due to the lower part of the mutual inductor ontology, fixed block 6 can be fixed and be unclamped to rotary buckle 61, and the two sides of the limited block 6 are set
It is equipped with card slot 62, holding strip corresponding with the card slot is provided on the inside of the mutual inductor ontology, the buckle 61 is located at
The junction of 6 lower part of mutual inductor ontology and limited block keeps limited block 6 and mutual inductor body construction firm, and the limited block 6 is by ring
Oxygen resin pours, and the mutual inductor ontology is arranged in the shape of a hoof, and the limited block 6 is located at the inside of mutual inductor ontology, institute
The lower part flush for stating limited block 6 Yu mutual inductor ontology makes limited block 6 and mutual inductor ontology constitute an entirety, the limit
The top of block 6 is arc-shaped and constitutes the threading hole 4 with mutual inductor ontology, and primary side electric wire passes through threading hole 4,6 energy of limited block
It enough prevents primary side electric wire from moving down, influences the performance of mutual inductor ontology effect, the outside of the mutual inductor ontology is provided with
Shielding case 8, the top of the shielding case 8 are provided with the cover 81, and being provided on the shielding case can be by primary side conducting wire
Wire guide 82, the wire guide 82 are surrounded by shielding case 8 and the cover 81, and the cover 81 is correspondingly arranged with the shielding case 8, institute
It states shielding case 8 to be fixedly connected with the cover 81, makes its stable connection, the shielding case 8 covers on the outside of mutual inductor ontology, the screen
Covering cover 8 is conductive metal mesh shielding case, can effectively reduce interference of the external magnetic field to mutual inductor ontology, make mutual inductor ontology not
Electric current can be generated because of external magnetic field, the shielding case 8 and mutual inductor ontology are fixed together by the fixing bolt 71, are made
Its stable structure.
Application method:
Firstly, shielding case 8 to be placed on to the position for needing to install zero sequence current mutual inductor, then by mutual inductor ontology and limit
The buckle 61 of position 6 lower part of block is opened, and removes limited block 6, the electric wire of primary side is placed in the threading hole 4, limited block 6 is blocked
It is buckled to mutual inductor body interior, then by buckle 61, it is made to be connected firmly, mutual inductor ontology is finally placed on the shielding case
Inside 8, meanwhile, primary side conducting wire is placed in the wire guide 82, with fixing bolt 71 by mutual inductor ontology and shielding case 8
It fixes together, covers the cover 81, the cover 81 and shielding case 8 is fixed.
The utility model has the technical effect that following aspect: conveniently tearing open due to being provided in mutual inductor body interior
The limited block unloaded makes mutual inductor ontology easy disassembly, due to being provided with shielding case, can shield external interference magnetic field, make mutually
The protecting effect of sensor ontology is more preferable.
Certainly, the representative instance of above only the utility model, in addition to this, the utility model can also have other a variety of
Specific embodiment, all technical solutions formed using equivalent substitution or equivalent transformation all fall within the requires of the utility model protection
Within the scope of.
Claims (5)
1. a kind of zero sequence current mutual inductor includes mutual inductor ontology, the mutual inductor ontology includes horseshoe iron core, the horse
Shoes core it is opening down, the left and right side of the horseshoe iron core is wound with left coil and right coil, the horseshoe respectively
Core and left coil, right coil are poured by epoxy resin builds up an entirety, and the mutual inductor ontology is provided centrally with threading hole, institute
The lower part for stating mutual inductor ontology left and right side is respectively arranged with fixed block, and the fixed block protrudes from mutual inductor ontology, described
Fixing bolt is provided on fixed block, it is characterised in that: the lower part of the threading hole is provided with limited block, the limited block and mutually
There is buckle to fix between sensor ontology, the outside of the mutual inductor ontology is provided with shielding case, and the top of the shielding case is equipped with
The cover.
2. zero sequence current mutual inductor according to claim 1, it is characterised in that: the line of the left coil and right coil top
Head is connected with each other, and the lower part at left and right sides of the mutual inductor ontology is all equipped with pin, described two pins respectively with left coil and
The end of a thread of right coil lower part is connected.
3. zero sequence current mutual inductor according to claim 2, it is characterised in that: the limited block poured by epoxy resin and
At the mutual inductor ontology is arranged in the shape of a hoof, and the limited block is located at the inside of mutual inductor ontology, the limited block and mutual inductance
The lower part flush of device ontology, the top of the limited block is arc-shaped and constitutes the threading hole with mutual inductor ontology.
4. zero sequence current mutual inductor according to claim 3, it is characterised in that: the two sides of the limited block are provided with card
Slot, holding strip corresponding with the card slot is provided on the inside of the mutual inductor ontology, and the buckle is located at mutual inductor ontology
With the junction of limited block lower part.
5. zero sequence current mutual inductor according to claim 4, it is characterised in that: the shielding case covers on mutual inductor ontology
Outside is provided with wire guide on the shielding case, and the shielding case is conductive metal mesh shielding case, and the shielding case is by described solid
Determine bolt to fix.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821885568.6U CN208848741U (en) | 2018-11-15 | 2018-11-15 | A kind of zero sequence current mutual inductor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821885568.6U CN208848741U (en) | 2018-11-15 | 2018-11-15 | A kind of zero sequence current mutual inductor |
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| Publication Number | Publication Date |
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| CN208848741U true CN208848741U (en) | 2019-05-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201821885568.6U Active CN208848741U (en) | 2018-11-15 | 2018-11-15 | A kind of zero sequence current mutual inductor |
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| CN (1) | CN208848741U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113628863A (en) * | 2021-08-12 | 2021-11-09 | 德清盖格电子有限公司 | Zero sequence current transformer |
-
2018
- 2018-11-15 CN CN201821885568.6U patent/CN208848741U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113628863A (en) * | 2021-08-12 | 2021-11-09 | 德清盖格电子有限公司 | Zero sequence current transformer |
| CN113628863B (en) * | 2021-08-12 | 2023-01-13 | 德清盖格电子有限公司 | Zero sequence current transformer |
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