CN210271978U - Integrated mutual inductor with zero-sequence embedded current - Google Patents
Integrated mutual inductor with zero-sequence embedded current Download PDFInfo
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- CN210271978U CN210271978U CN201921510590.7U CN201921510590U CN210271978U CN 210271978 U CN210271978 U CN 210271978U CN 201921510590 U CN201921510590 U CN 201921510590U CN 210271978 U CN210271978 U CN 210271978U
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Abstract
The utility model provides an integrated mutual inductor with embedded current in zero sequence, which comprises a first shell, a second shell, a zero sequence mutual inductor coil and a current mutual inductor coil, wherein the zero sequence mutual inductor coil and the current mutual inductor coil are accommodated in a cavity buckled by the first shell and the second shell; a current transformer coil is arranged in an annular hole of the zero sequence transformer coil; the second shell is further provided with an outlet through hole, the first shell is provided with an inlet through hole corresponding to the outlet through hole, the live wire penetrates through the inlet through hole, penetrates through the ring hole of the current transformer coil and then penetrates out of the outlet through hole, the zero line penetrates through the inlet through hole, penetrates through the ring hole of the zero sequence transformer coil and then penetrates out of the outlet through hole. The zero sequence transformer and the current transformer are reasonably arranged, the size of accessories is reduced through reasonable and ingenious arrangement, the accessories can be directly buckled on a single-phase circuit breaker, wiring is convenient, the size is small, and intelligent power utilization can be met.
Description
Technical Field
The utility model relates to a mutual-inductor technical field especially relates to an embedded current's of zero sequence integral type mutual-inductor.
Background
The current transformer is an indispensable ring capable of converting large current into small current and outputting the small current to an intelligent detection system, and the current transformer is an important accessory in an air switch/circuit breaker today of intelligent power utilization; the function of the device is mainly to convert large current into standard small current in proportion, so as to realize standardization and miniaturization of measuring instruments, protective equipment and automatic control equipment.
The zero sequence transformer means that all lines of the power utilization circuit penetrate through the transformer, when the zero sequence transformer monitors current generated when power utilization equipment works, if the lines leak electricity, unbalanced current flows through the current circuit penetrating through the transformer and is detected by the zero sequence transformer, and the signal can be sent to an execution element to be tripped. However, the existing circuit breakers are divided into common circuit breakers and intelligent power utilization circuit breakers, and the common circuit breakers need to be additionally provided with transformers and also need to consider the size of an electric box; and other intelligent circuit breakers in the market also have the condition that the accessories are too thick, so that the short wiring distance in the electric box is inconvenient to maintain and operate.
Therefore, a mutual inductor which is more practical and reasonable in structure is urgently needed in the market.
SUMMERY OF THE UTILITY MODEL
To the weak point that exists among the above-mentioned technique, the utility model provides an embedded current's of zero sequence integral type mutual-inductor to solve the current mutual-inductor volume that provides among the above-mentioned background art too big, the accessory installs inconvenient problem additional.
In order to achieve the above object, the utility model provides an integral mutual inductor with embedded current in zero sequence, which belongs to the accessory of a single-phase circuit breaker and is used in cooperation with a miniature circuit breaker with rated current of 1A-63A, and comprises a first shell, a second shell, a zero sequence mutual inductor coil and a current mutual inductor coil, wherein the zero sequence mutual inductor coil and the current mutual inductor coil are accommodated in a cavity buckled by the first shell and the second shell;
the current transformer coil is arranged in the annular hole of the zero sequence transformer coil, and the second shell forms a partition plate to separate the zero sequence transformer coil from the current transformer coil; the second shell is further provided with an outgoing line through hole, the first shell is provided with an incoming line through hole corresponding to the outgoing line through hole, the live line penetrates through the incoming line through hole, penetrates through the annular hole of the current transformer coil and then penetrates out of the outgoing line through hole, the zero line penetrates through the incoming line through hole, penetrates through the annular hole of the zero sequence transformer coil and then penetrates out of the outgoing line through hole.
Preferably, the second housing is provided with a first annular accommodating groove and a second annular accommodating groove, and the first annular accommodating groove is arranged in an annular hole of the second annular accommodating groove; the current transformer coil is embedded and fixed in the first annular accommodating groove, and the zero sequence transformer coil is embedded and fixed in the second annular accommodating groove.
Preferably, a first through hole through which a live wire passes is further formed in the annular hole of the first annular accommodating groove, and a second through hole through which a zero wire passes is formed in a part, not surrounded by the first annular accommodating groove, of the annular hole of the second annular accommodating groove.
Preferably, the wire inlet through hole comprises a first wire inlet hole and a second wire inlet hole, edges of the first wire inlet hole and the second wire inlet hole extend towards the second shell to form a first convex wall, and edges of the first through hole and the second through hole extend towards the first shell to form a second convex wall; after the first shell and the second shell are buckled, the first protruding wall and the second protruding wall are tightly attached to form a channel so as to separate a live wire and a zero line from the zero sequence and current transformer coils.
Preferably, the first housing is further provided with a buckle adapted to the single-phase circuit breaker, and the first housing and the second housing are buckled and connected to the base of the single-phase circuit breaker.
Preferably, the inlet wire through hole corresponds the setting with the output through hole of single-phase circuit breaker base, first casing with behind the second casing lock, the inlet wire through hole is coaxial with the inlet wire through hole of single-phase circuit breaker base.
Preferably, the zero sequence transformer coil and the current transformer coil are connected through a communication wiring terminal and an input wiring terminal, the output terminal of the zero sequence transformer coil and the output terminal of the current transformer coil are connected with the input wiring terminal, and the communication wiring terminal is used for being connected with external accessories.
Preferably, the communication terminal extends through the second housing and out of the second housing; the input terminal penetrates through the first shell and extends out of the first shell so as to be connected with an electric control cabin of the single-phase circuit breaker.
The utility model has the advantages that: in the prior art, as single-phase power consumption, the mutual inductor is not equipped with to carry out the measurement of circuit parameter usually, does not just be equipped with zero sequence mutual inductor and current transformer and plays the function of a measurement current, power, electric energy, and as single-phase circuit breaker's accessory, both must consider the function that the accessory has, must consider the height of current electronic box again, because as old-fashioned combination formula electronic box, the size of length and width all is comparatively fixed, so when adding the accessory, the volume is the better, but the function can not be less and less castration version, so just there is the intention of the utility model based on the current predicament in market.
The utility model comprises a first shell, a second shell, a zero sequence mutual inductor coil and a current mutual inductor coil, wherein the zero sequence mutual inductor coil and the current mutual inductor coil are accommodated in a cavity formed by buckling the first shell and the second shell; a current transformer coil is arranged in an annular hole of the zero sequence transformer coil, and a partition plate is formed on the second shell to separate the zero sequence transformer coil from the current transformer coil; the second shell is further provided with an outlet through hole, the first shell is provided with an inlet through hole corresponding to the outlet through hole, the live wire penetrates through the inlet through hole, penetrates through the ring hole of the current transformer coil and then penetrates out of the outlet through hole, the zero line penetrates through the inlet through hole, penetrates through the ring hole of the zero sequence transformer coil and then penetrates out of the outlet through hole. The zero sequence transformer and the current transformer are reasonably arranged, the current transformer coil only needing to induce live wire current is arranged in the annular hole of the zero sequence transformer coil, then the live wire penetrates through the current transformer coil, the zero line also penetrates through the annular hole of the zero sequence transformer coil, and the reasonable and ingenious arrangement reduces the size of accessories in the range covered by the current transformer, the direct lock can be realized on the single-phase circuit breaker, the wiring is convenient, the size is small, and the intelligent power utilization can be met.
Drawings
Fig. 1 is a perspective view of the present invention;
fig. 2 is a first perspective of an exploded view of the present invention;
fig. 3 is a second perspective of the exploded view of the present invention;
fig. 4 is a perspective view of a second housing of the present invention;
fig. 5 is a schematic view of the present invention with the first housing removed;
figure 6 is the utility model discloses the assembly is the schematic diagram when single-phase circuit breaker.
The main element symbols are as follows:
1. a first housing; 11. buckling; 2. a second housing; 21. a wire outlet through hole; 211. a first through hole; 212. a second through hole; 22 wire inlet through holes; 221. a first wire inlet hole; 222. a second wire inlet hole; 23. a first annular accommodating groove; 24. a second annular accommodating groove; 3. a zero sequence transformer coil; 4. a current transformer coil; 5. a main control board; 51. a communication terminal; 52. an input terminal; 6. a single-phase circuit breaker.
Detailed Description
In order to make the present invention clearer, the present invention will be further described with reference to the accompanying drawings.
The utility model provides an integral transformer of embedded current of zero sequence, please refer to fig. 1-6, belong to the accessory of single-phase circuit breaker, and only for cooperating the miniature circuit breaker that rated current is 1A-63A to use, specifically include first casing 1, second casing 2, zero sequence transformer coil 3 and current transformer coil 4 hold in the cavity that first casing 1 and second casing 2 buckled into;
a current transformer coil 4 is arranged in an annular hole of the zero sequence transformer coil 3, and a partition plate is formed on the second shell to separate the zero sequence transformer coil 3 from the current transformer coil 4; the second shell 2 is further provided with an outlet through hole 21, the first shell 1 is provided with an inlet through hole 22 corresponding to the outlet through hole 21, the live wire penetrates through the inlet through hole 22, penetrates through the annular hole of the current transformer coil 4 and then penetrates out of the outlet through hole 21, the zero line penetrates through the inlet through hole 22, penetrates through the annular hole of the zero sequence transformer coil 3 and then penetrates out of the outlet through hole 21. After the first shell and the second shell are buckled, the zero sequence transformer coil and the current transformer coil are separated by a partition plate, so that the two can be prevented from being damaged by collision, and the accessory serving as the single-phase circuit breaker is horizontally placed below an output port of the single-phase circuit breaker, and the position shifting phenomenon can not occur; the live wire penetrates through the annular hole of the current transformer coil, then penetrates out of the outgoing line through hole, then the zero line penetrates through the incoming line through hole, then penetrates through the annular hole of the zero sequence transformer coil and is not positioned at the part of the current transformer coil, and finally penetrates out of the outgoing line through hole. The current transformer coil is used for carrying out data acquisition and monitoring on the current of the live wire to realize the metering function; zero sequence transformer coil detects the balanced current of live wire and zero line, realizes the sensing function of leakage detection and protection to the current transformer coil is embedded arranges in zero sequence transformer coil's annular ring, and the nested formula of arranging of two kinds of mutual-inductor coils lets the thickness of overall structure very little, compares the mutual-inductor accessory that 3-4cm on the market is thick mutually, the utility model discloses about possible 1.5cm, structure ingenious very. The zero sequence and current transformer coils can be connected with external equipment for subsequent monitoring and response through the output ends of the zero sequence and current transformer coils.
In the present embodiment, the second housing 2 is provided with a first annular receiving groove 23 and a second annular receiving groove 24, and the first annular receiving groove 23 is provided in an annular hole of the second annular receiving groove 24; the current transformer coil 4 is embedded and fixed in the first annular accommodating groove 23, and the zero sequence transformer coil 3 is embedded and fixed in the second annular accommodating groove 24. Set up annular holding tank on the second casing, with zero sequence transformer coil and current transformer coil imbed second annular holding tank and first annular holding tank respectively in, separate current transformer coil and zero sequence transformer coil completely to better fixed knot constructs, can not take place unnecessary drunkenness and collision, improves the measuring degree of accuracy.
In this embodiment, referring to fig. 3, a first through hole 211 for passing the live wire is further disposed in the annular hole of the first annular receiving groove 23, and a second through hole 212 for passing the neutral wire is disposed in a portion surrounded by the non-first annular receiving groove in the annular hole of the second annular receiving groove 24. The first through hole and the second through hole are outgoing line through holes, so that the live line and the zero line are prevented from being bent when being arranged in the cavity, and after the zero sequence transformer and the current transformer are fixed, the zero sequence transformer and the current transformer are punched and arranged at corresponding positions.
In the present embodiment, referring to fig. 1-3, the wire inlet through hole 22 includes a first wire inlet hole 221 and a second wire inlet hole 222, wherein edges of the first and second wire inlet holes extend toward the second housing to form a first convex wall, and edges of the first and second through holes extend toward the first housing to form a second convex wall; after first casing and second casing lock, the passageway is formed in the inseparable laminating of first protruding wall and the protruding wall of second, first entrance hole, the second entrance hole corresponds the setting with first through-hole and second through-hole respectively, that is to say between two pairs of corresponding hole sites, the mutual bellied part has all been produced, in order after first casing and second casing lock, the protruding part of both has closely laminated and has formed a passageway, this passageway is just that holding live wire and zero line pass through, and the existence of passageway is in order to separate live wire and zero line and zero sequence, current transformer coil promptly.
In this embodiment, please refer to fig. 6, the first casing 1 is further provided with a buckle 11 adapted to the single-phase circuit breaker, and the first casing 1 and the second casing 2 are buckled and connected to the base of the single-phase circuit breaker. In the application of single-phase circuit breaker, because the accessory that produces factory all can reserve to detain the position and use for the circuit breaker for the cooperation, for example, Schneider's single-phase circuit breaker, reserve to detain the position and carry out the assembly of accessory in single-phase circuit breaker's bottom. The circuit breaker, particularly of schneider IC65N series, can be assembled.
In this embodiment, please refer to fig. 4, the incoming line through hole 22 corresponds to the output through hole of the single-phase circuit breaker base, and after the first casing 1 and the second casing 2 are fastened, the incoming line through hole 22 is coaxial with the incoming line through hole 22 of the single-phase circuit breaker base. Because single-phase circuit breaker's specification is certain to its output through-hole position of single-phase circuit breaker to fixed firm producer's production is all certain, so carry out through-hole and output through-hole and be the coaxial line setting after the lock, unusual suitable assembly and wiring, and can not be because the not corresponding condition of the live wire and the zero line of buckling that appears in hole position after the lock, can guarantee its best and walk line and assembly.
In this embodiment, please refer to fig. 5, the current transformer further includes a main control board 5, the main control board 5 is provided with a communication terminal 51 and an input terminal 52, the output end of the zero sequence transformer coil and the output end of the current transformer coil are both connected to the input terminal, and the communication terminal is used for being connected to an external accessory. The communication terminal 51 penetrates the second housing 2 and extends out of the second housing 2; the input terminal 52 penetrates through the first casing 1 and extends out of the first casing 1 to be connected with the electric control cabin of the single-phase circuit breaker. Because the electric control cabin fittings of the single-phase circuit breaker are all assembled on the side edge of the circuit breaker, the input wiring terminal can penetrate through the first shell to be directly connected with the electric control cabin on the side wall, and can also directly obtain power supply from the electric control cabin to complete the functions of data transmission and the like.
Examples
The current transformer is embedded in an annular hole of a zero sequence transformer coil, and then a live wire and a zero wire penetrate through the circuit breaker and extend out of an output through hole at the bottom of the circuit breaker; the live wire penetrates out of the first through hole, and then naturally penetrates through the annular hole of the current transformer coil, and the zero line penetrates out of the second through hole, penetrates through the annular hole of the zero sequence transformer coil and is not in the range of the current transformer coil; the method comprises the following steps that a zero sequence transformer monitors balance current of a live wire and a zero line, and a current transformer monitors current information of the live wire; then the wiring terminals of the zero sequence transformer and the current transformer are connected to the input wiring terminal of the main control board, the communication wiring terminal of the main control board is connected with the remote gateway for reading and transmitting data, and the input wiring terminal can be connected with the electric control cabin to realize leakage protection and the like, namely the opening and closing function is realized. Then, the buckle on the first shell is utilized to be buckled and fixed with the buckle position on the bottom shell of the circuit breaker, and the first shell and the second shell are fixed by screws. And contain communication PCB inside, let the mutual-inductor have the information transmission function to still be provided with temperature sensor in the mutual-inductor knapsack, monitor the inside temperature of mutual-inductor, let the running state of mutual-inductor can real time monitoring, functions such as periodic leakage experiment, remote monitoring real-time data are realized to overall function.
The utility model has the advantages that:
1) the traditional 1A-60A miniature circuit breaker is not provided with remote switching-on and switching-off, so that the intelligent power utilization function is realized by using accessories which are provided with a zero sequence transformer and a current transformer simultaneously;
2) the current transformer coil is nested in the annular hole of the zero sequence transformer coil, the design volume of the whole accessory is reduced, and the assembly convenience of the old-fashioned electronic box is realized.
The above disclosure is only for the specific embodiments of the present invention, but the present invention is not limited thereto, and any changes that can be made by those skilled in the art should fall within the protection scope of the present invention.
Claims (8)
1. An integrated mutual inductor with embedded current in zero sequence belongs to accessories of a single-phase circuit breaker, is used by matching with a miniature circuit breaker with rated current of 1A-63A, and is characterized by comprising a first shell, a second shell, a zero sequence mutual inductor coil and a current mutual inductor coil, wherein the zero sequence mutual inductor coil and the current mutual inductor coil are accommodated in a cavity formed by buckling the first shell and the second shell;
the current transformer coil is arranged in the annular hole of the zero sequence transformer coil, and the second shell forms a partition plate to separate the zero sequence transformer coil from the current transformer coil; the second shell is further provided with an outgoing line through hole, the first shell is provided with an incoming line through hole corresponding to the outgoing line through hole, the live line penetrates through the incoming line through hole, penetrates through the annular hole of the current transformer coil and then penetrates out of the outgoing line through hole, the zero line penetrates through the incoming line through hole, penetrates through the annular hole of the zero sequence transformer coil and then penetrates out of the outgoing line through hole.
2. The zero sequence current embedded integrated transformer of claim 1, wherein the second housing is provided with a first annular receiving groove and a second annular receiving groove, the first annular receiving groove being disposed in an annular hole of the second annular receiving groove; the current transformer coil is embedded and fixed in the first annular accommodating groove, and the zero sequence transformer coil is embedded and fixed in the second annular accommodating groove.
3. The zero-sequence current-embedded integrated mutual inductor according to claim 2, wherein a first through hole for passing a live wire is further arranged in the annular hole of the first annular accommodating groove, and a second through hole for passing a zero wire is arranged in a part, not surrounded by the first annular accommodating groove, in the annular hole of the second annular accommodating groove.
4. The zero-sequence current-embedded integrated transformer of claim 3, wherein the wire inlet through hole comprises a first wire inlet hole and a second wire inlet hole, edges of the first and second wire inlet holes extend towards the second shell to form a first convex wall, and edges of the first and second through holes extend towards the first shell to form a second convex wall; after the first shell and the second shell are buckled, the first protruding wall and the second protruding wall are tightly attached to form a channel so as to separate a live wire and a zero line from the zero sequence and current transformer coils.
5. The zero-sequence embedded current integrated transformer according to claim 1, wherein the first housing is further provided with a buckle adapted to a single-phase circuit breaker, and the first housing and the second housing are connected to a base of the single-phase circuit breaker in a buckling manner.
6. The zero sequence embedded current integrated transformer as claimed in claim 5, wherein the inlet wire through hole is arranged corresponding to the output through hole of the single phase breaker base, and after the first shell and the second shell are fastened, the inlet wire through hole is coaxial with the inlet wire through hole of the single phase breaker base.
7. The zero-sequence current-embedded integrated transformer of claim 1, further comprising a main control board, wherein the main control board is provided with a communication terminal and an input terminal, the output terminal of the zero-sequence transformer coil and the output terminal of the current transformer coil are both connected to the input terminal, and the communication terminal is used for being connected to an external accessory.
8. The zero sequence embedded current integrated transformer of claim 7, wherein the communication terminal penetrates through the second shell and extends out of the second shell; the input terminal penetrates through the first shell and extends out of the first shell so as to be connected with an electric control cabin of the single-phase circuit breaker.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921510590.7U CN210271978U (en) | 2019-09-11 | 2019-09-11 | Integrated mutual inductor with zero-sequence embedded current |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921510590.7U CN210271978U (en) | 2019-09-11 | 2019-09-11 | Integrated mutual inductor with zero-sequence embedded current |
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| Publication Number | Publication Date |
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| CN210271978U true CN210271978U (en) | 2020-04-07 |
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| CN201921510590.7U Active CN210271978U (en) | 2019-09-11 | 2019-09-11 | Integrated mutual inductor with zero-sequence embedded current |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023076396A1 (en) * | 2021-10-26 | 2023-05-04 | Vertiv Corporation | Single package, dual current transformer for load and residual current measurement |
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2019
- 2019-09-11 CN CN201921510590.7U patent/CN210271978U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023076396A1 (en) * | 2021-10-26 | 2023-05-04 | Vertiv Corporation | Single package, dual current transformer for load and residual current measurement |
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