CN215183761U - Plastic case circuit breaker - Google Patents
Plastic case circuit breaker Download PDFInfo
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- CN215183761U CN215183761U CN202120237757.8U CN202120237757U CN215183761U CN 215183761 U CN215183761 U CN 215183761U CN 202120237757 U CN202120237757 U CN 202120237757U CN 215183761 U CN215183761 U CN 215183761U
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Abstract
The utility model provides a moulded case circuit breaker belongs to power electronic technology field. Including primary circuit, secondary circuit and iron sheet metal, be equipped with the trompil on the iron sheet metal, be provided with the sensor in the primary circuit, primary circuit and secondary circuit set up respectively on the both sides of iron sheet metal, keep apart the electromagnetic interference of primary circuit through the iron sheet metal, and the secondary lead wire of sensor passes through the trompil and switches to the secondary circuit. The utility model discloses still provide another kind of moulded case circuit breaker, including primary circuit, secondary circuit and inductance magnetic ring, be provided with the sensor in the primary circuit, the secondary circuit is received after the secondary lead wire of sensor passes inductance magnetic ring center, and the inductance magnetic ring sets up the one end that is close to the secondary circuit at the secondary lead wire.
Description
Technical Field
The utility model relates to a power electronic technology field especially relates to a moulded case circuit breaker.
Background
At present, analog electronic devices are mostly selected for use to achieve the purposes of measurement, monitoring or protection in simple electronic molded case circuit breakers, along with the development of computer technology, digital electronic devices are more and more, functions are more and more powerful, cost performance is improved, and the digital electronic devices can be widely applied to the molded case circuit breakers to achieve the functions of measurement, monitoring, protection, communication and the like of electric equipment.
Compared with an analog electronic device, the digital electronic device has weaker anti-electromagnetic interference capability, the core function of the plastic shell switch is to switch on and off larger current, strong electric interference signals can be generated near a main contact of the plastic shell switch, and particularly at the moment of switching on and off the current, the electromagnetic interference signals are very strong, so that the electronic device can not normally work or even be damaged due to serious interference on the nearby weak electric signals. The prior art proposes to separately set up primary equipment and secondary equipment, installs in the space of difference, and the lead wire of extension sensor makes interference signal nature decay through increaseing the distance to reduce interference signal's influence, this kind of mode with primary equipment and secondary equipment separately set up can occupy great space, increases area, and the connecting wire is more between primary equipment and the secondary equipment in addition, and the construction is complicated, separately maintains primary equipment and secondary equipment, and it is more to occupy the manpower.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides a moulded case circuit breaker, through the structure that improves electronic type moulded case circuit breaker, improves moulded case circuit breaker's weak current signal interference killing feature, reduces the influence of the strong electromagnetic interference signal that produces even in the elimination primary circuit to the secondary circuit.
The embodiment of the utility model provides a solve the technical scheme that its technical problem adopted and be:
the utility model provides a moulded case circuit breaker, includes primary circuit, secondary circuit and iron sheet metal, be equipped with the trompil on the iron sheet metal, be provided with the sensor in the primary circuit, the primary circuit with the secondary circuit sets up respectively the both sides of iron sheet metal, through the iron sheet metal is kept apart the electromagnetic interference of primary circuit, the secondary lead wire of sensor passes through the trompil is transferred to the secondary circuit.
Preferably, the sensor is a temperature sensor, a secondary lead of the temperature sensor is switched to the secondary circuit through a first open pore of the iron sheet, a leading-out wire of a voltage end in the primary circuit is switched to the secondary circuit through a second open pore of the iron sheet, and a leading-out wire of a current end in the primary circuit is switched to the secondary circuit through a third open pore of the iron sheet.
Preferably, the opening hole on the iron sheet is a round hole.
Preferably, the sheet thickness of the ferrous sheet does not exceed 1 mm.
The embodiment of the utility model provides a moulded case circuit breaker is still provided, including primary circuit, secondary circuit and inductance magnetic ring, be provided with the sensor in the primary circuit, the secondary lead wire of sensor passes receive behind the inductance magnetic ring center secondary circuit, the inductance magnetic ring sets up the secondary lead wire is close to secondary circuit's one end.
Preferably, the sensor is a temperature sensor, a secondary lead of the temperature sensor is connected to the secondary circuit through the center of the first inductance magnetic ring, a lead-out wire at a voltage end in the primary circuit is connected to the secondary circuit through the center of the second inductance magnetic ring, a lead-out wire at a current end in the primary circuit is connected to the secondary circuit through the center of the third inductance magnetic ring, the center of the first inductance magnetic ring is arranged at one end, close to the secondary circuit, of the secondary lead of the temperature sensor, the center of the second inductance magnetic ring is arranged at one end, close to the secondary circuit, of the lead-out wire at the voltage end, and the center of the third inductance magnetic ring is arranged at one end, close to the secondary circuit, of the lead-out wire at the current end.
According to the above technical scheme, the embodiment of the utility model provides a moulded case circuit breaker, through improving electronic type moulded case circuit breaker's structure, can improve moulded case circuit breaker's weak current signal interference killing feature, reduce the strong electromagnetic interference signal that can eliminate even in the primary circuit and to the influence of secondary circuit for a high-voltage circuit can be very close apart from secondary weak current circuit, reduces equipment occupation space, improve equipment's reliability.
Drawings
Fig. 1 is a schematic structural diagram of a first molded case circuit breaker according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of the iron sheet according to the embodiment of the present invention.
Fig. 3 is a schematic structural diagram of a second molded case circuit breaker according to an embodiment of the present invention.
In the figure: the circuit comprises a primary circuit 1, a secondary circuit 2, an iron sheet 3, an inductance magnetic ring 4, a temperature sensor 11, a voltage end 12, a current end 13, a first opening 31, a second opening 32, a third opening 33, a first inductance magnetic ring 41, a second inductance magnetic ring 42 and a third inductance magnetic ring 43.
Detailed Description
The following combines the drawings of the utility model to further elaborate the technical scheme and technical effect of the utility model.
The embodiment of the utility model provides a moulded case circuit breaker, as shown in fig. 1, including primary circuit 1, secondary circuit 2 and iron sheet metal 3, wherein, iron sheet metal 3 is equipped with the trompil as electromagnetic isolation material on it, is provided with the sensor in the primary circuit 1, and primary circuit 1 and secondary circuit 2 set up respectively on the both sides of iron sheet metal 3, keep apart the electromagnetic interference that primary circuit 1 produced through iron sheet metal 3, and the secondary lead wire of sensor switches to secondary circuit 2 through the trompil on the iron sheet metal 3 in the primary circuit 1.
As shown in fig. 2, the hole on the iron sheet 3 is a circular hole, the thickness of the sheet material of the iron sheet is not more than 1mm, the iron sheet 3 is provided with a plurality of holes, the primary circuit 1 is provided with a temperature sensor 11, the secondary lead of the temperature sensor 11 is switched to the secondary circuit 2 through the first hole 31 of the iron sheet 3, the outgoing line of the voltage terminal 12 in the primary circuit 1 is switched to the secondary circuit 2 through the second hole 32 of the iron sheet 3, and the outgoing line of the current terminal 13 in the primary circuit is switched to the secondary circuit 2 through the third hole 33 of the iron sheet 3.
Through the wiring mode, after the circuit is electrified, the iron sheet 3 can play an electromagnetic isolation role between the primary circuit 1 and the secondary circuit 2, electromagnetic interference signals generated when the primary circuit 1 is switched on and switched off are reduced or eliminated, and the influence on digital electronic devices in the secondary circuit 2 is reduced.
As shown in fig. 3, the embodiment of the utility model provides a still provide another kind of moulded case circuit breaker, including primary circuit 1, secondary circuit 2 and inductance magnetic ring 4, wherein, be provided with the sensor in the primary circuit 1, secondary circuit 2 is received after the secondary lead wire of sensor passes inductance magnetic ring 4 centers, and inductance magnetic ring 4 sets up the one end that is close to secondary circuit 2 at the secondary lead wire of sensor.
As shown in fig. 3, a temperature sensor 11 is disposed in a primary circuit 1, a secondary lead of the temperature sensor 11 is connected to a secondary circuit 2 through the center of a first inductance magnetic ring 41, an outgoing line of a voltage terminal 12 in the primary circuit 1 is connected to the secondary circuit 2 through the center of a second inductance magnetic ring 42, an outgoing line of a current terminal 13 in the primary circuit 1 is connected to the secondary circuit 2 through the center of a third inductance magnetic ring 43, wherein the center of the first inductance magnetic ring 41 is disposed at one end of the secondary lead of the temperature sensor 11 close to the secondary circuit 2, the center of the second inductance magnetic ring 42 is disposed at one end of the outgoing line of the voltage terminal 12 close to the secondary circuit 2, and the center 43 of the third inductance magnetic ring is disposed at one end of the outgoing line of the current terminal 13 close to the secondary circuit 2.
Through the wiring mode, after the secondary circuit 2 is electrified, the inductance magnetic ring 4 can play a role in absorbing electromagnetic interference signals generated when the primary circuit 1 is switched on and switched off near the secondary circuit 2, and the influence on digital electronic devices in the secondary circuit 2 is reduced.
The embodiment of the utility model provides a moulded case circuit breaker, through the structure that improves electronic type moulded case circuit breaker, improved moulded case circuit breaker's weak current signal interference killing feature, reduce the strong electromagnetic interference signal that can eliminate in the primary circuit even to secondary circuit's influence for a high-voltage circuit can be very close with the weak current circuit of secondary apart from, reduces equipment occupation space.
Adopt the embodiment of the utility model provides a, can improve secondary circuit's reliability, utilize electronic type moulded case circuit breaker to replace former pure mechanical type moulded case circuit breaker, can improve the protection level of power consumption circuit for the low-voltage circuit protection has selectivity, fast mobility, sensitivity, can improve the security performance of power consumption.
Adopt the embodiment of the utility model provides a, primary circuit and secondary circuit can the compact installation, combine together. Same circuit capacity, load kind adopt the use the utility model discloses a once the secondary fuses electronic type moulded case circuit breaker, can reduce the installation cabinet body volume, greatly reduced installation space.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention.
Claims (6)
1. The utility model provides a moulded case circuit breaker, its characterized in that includes primary circuit, secondary circuit and iron sheet metal, be equipped with the trompil on the iron sheet metal, be provided with the sensor in the primary circuit, the primary circuit with the secondary circuit sets up respectively the both sides of iron sheet metal, through the iron sheet metal is kept apart the electromagnetic interference of primary circuit, the secondary lead wire of sensor passes through the trompil is transferred to the secondary circuit.
2. A molded case circuit breaker according to claim 1, wherein the sensor is a temperature sensor, a secondary lead of the temperature sensor is connected to the secondary circuit through a first opening of the thin iron plate, a lead of a voltage terminal in the primary circuit is connected to the secondary circuit through a second opening of the thin iron plate, and a lead of a current terminal in the primary circuit is connected to the secondary circuit through a third opening of the thin iron plate.
3. A molded case circuit breaker according to claim 1, wherein the opening in the ferrous thin plate is a circular hole.
4. A molded case circuit breaker according to claim 1, wherein the sheet thickness of the iron thin plate is not more than 1 mm.
5. A molded case circuit breaker is characterized by comprising a primary circuit, a secondary circuit and an inductance magnetic ring, wherein a sensor is arranged in the primary circuit, a secondary lead of the sensor penetrates through the center of the inductance magnetic ring and then is connected to the secondary circuit, and the inductance magnetic ring is arranged at one end, close to the secondary circuit, of the secondary lead.
6. A molded case circuit breaker as recited in claim 5, wherein the sensor is a temperature sensor, a secondary lead of the temperature sensor is re-connected to the secondary circuit through a center of a first inductor magnetic ring, a lead of a voltage terminal in the primary circuit is re-connected to the secondary circuit through a center of a second inductor magnetic ring, a lead of a current terminal in the primary circuit is re-connected to the secondary circuit through a center of a third inductor magnetic ring, the center of the first inductor magnetic ring is disposed at an end of the secondary lead of the temperature sensor near the secondary circuit, the center of the second inductor magnetic ring is disposed at an end of the lead of the voltage terminal near the secondary circuit, and the center of the third inductor magnetic ring is disposed at an end of the lead of the current terminal near the secondary circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120237757.8U CN215183761U (en) | 2021-01-28 | 2021-01-28 | Plastic case circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120237757.8U CN215183761U (en) | 2021-01-28 | 2021-01-28 | Plastic case circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215183761U true CN215183761U (en) | 2021-12-14 |
Family
ID=79408217
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120237757.8U Active CN215183761U (en) | 2021-01-28 | 2021-01-28 | Plastic case circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215183761U (en) |
-
2021
- 2021-01-28 CN CN202120237757.8U patent/CN215183761U/en active Active
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