CN216819372U - Arc overvoltage flashing lamp - Google Patents

Abstract

The application discloses electric arc overvoltage flashing lamp, including the controller with connect respectively in the simulation test starting circuit, excessive pressure sampling circuit, power and fault indication circuit and the fault tripping separating brake circuit of controller, the controller includes the singlechip and connects in the power supply circuit of singlechip, power and fault indication circuit include the power indication circuit and the fault indication circuit of electricity connection respectively in the singlechip, power indication circuit includes resistance R15 and pilot lamp LED1, resistance R15's both ends are connected respectively in the pin of singlechip and pilot lamp LED 1's positive pole, pilot lamp LED 1's negative pole ground connection, fault indication circuit includes resistance R14 and pilot lamp LED2, resistance R14's both ends are connected respectively in the pin of singlechip and pilot lamp LED 2's positive pole, pilot lamp LED 2's negative pole ground connection. The application is simple and practical, and the fault reason can be visually obtained through the power supply and the fault indication circuit.

Description

Arc overvoltage flashing lamp

Technical Field

The application relates to the technical field of arc extinction overvoltage protection, in particular to an arc overvoltage flash lamp.

Background

The main hazard of the fault electric arc is fire, the high temperature and high heat generated by the fault electric arc easily ignite a circuit insulating layer to cause the circuit to be on fire, and if combustible substances exist near a fault point, the combustible substances are also easily ignited to cause the fire; fault arcs are generally classified into three types, namely series arcs, parallel arcs, and ground-to-ground arcs. In an electrical short-circuit fire, the danger of the fire is the greatest due to the ground fault and the electric arc has large impedance and voltage drop, the fault current is limited, the overcurrent protection electric appliance cannot act or cannot act in time to cut off a power supply, the local high temperature of the electric arc with a few amperes can reach 3000-4000 ℃, and the electric arc can ignite nearby combustible substances to ignite. Common circuit protection devices such as leakage protection devices, overload protection devices, circuit breakers and the like cannot effectively protect the fault arc. Accordingly, improvements are needed.

SUMMERY OF THE UTILITY MODEL

It is an object of the present invention to provide an arc overvoltage flash lamp that overcomes the deficiencies of the prior art.

In order to achieve the purpose, the utility model provides the following technical scheme:

the embodiment of the application discloses electric arc overvoltage flashing lamp, including the controller with connect in the simulation test starting circuit, excessive pressure sampling circuit, power and fault indication circuit and the fault tripping separating brake circuit of controller respectively, the controller includes the singlechip and connects in the power supply circuit of singlechip, power and fault indication circuit include the power indication circuit and the fault indication circuit of electricity connection respectively in the singlechip, power indication circuit includes resistance R15 and pilot lamp LED1, resistance R15's both ends are connected respectively in the pin of singlechip and pilot lamp LED 1's positive pole, pilot lamp LED 1's negative pole ground connection, fault indication circuit includes resistance R14 and pilot lamp LED2, resistance R14's both ends are connected respectively in the pin of singlechip and pilot lamp LED 2's positive pole, pilot lamp LED 2's negative pole ground connection.

Further, in the arc overvoltage flashing light described above, the indicator LED2 is provided with at least two flashing frequencies.

Further, in the arc overvoltage flash lamp, the fault tripping and opening circuit comprises an arc fault protection trigger circuit and an overvoltage protection trigger circuit which are connected in parallel with a control electrode of the thyristor, a cathode of the thyristor SCR is grounded, and an anode of the thyristor SCR is connected to the surge protection circuit through a diode D1.

Further, in above-mentioned arc overvoltage flashing lamp, the surge protection circuit includes live wire L that is provided with contact M1 and contact M2, contact M1 and contact M2 are connected respectively in the both ends of release subassembly coil, contact M1 and contact M2 are kept away from the one end at the both ends of release subassembly coil and are connected in zero line N through piezo-resistor RV1 and piezo-resistor RV2 respectively.

Further, in the arc overvoltage flash lamp, the arc fault protection trigger circuit is connected to the single chip microcomputer through the arc module.

Further, in the arc overvoltage flashing lamp, the analog test starting circuit is connected with a jog switch.

Further, in the arc overvoltage flash lamp described above, a terminal block J1 for a burn-in procedure is also included.

Compared with the prior art, the utility model has the advantages that: this electric arc excessive pressure flashing light is simple and practical, and when excessive pressure trouble and electric arc trouble produced, the protection of tripping operation is controlled to the fault tripping open circuit, also can get up the trouble memory that excessive pressure and electric arc produced in the twinkling of an eye before the tripping operation, when the circular telegram of next time closing a floodgate again, can flash pilot lamp LED2, directly perceived the fault reason, be convenient for take corresponding measure fast, eliminate hidden danger, protection power consumption safety.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present application, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a schematic diagram of an arc overvoltage flash lamp in accordance with an embodiment of the utility model.

Fig. 2 is a circuit diagram of a fault-trip tripping circuit according to an embodiment of the utility model.

Fig. 3 is a schematic wiring diagram of terminal block J1 in accordance with an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described in detail below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1 to 3, an arc overvoltage flashing light comprises a controller, a simulation test starting circuit 1, an overvoltage sampling circuit 2, a power supply and fault indication circuit 3 and a fault tripping and separating circuit 4, wherein the simulation test starting circuit 1, the overvoltage sampling circuit 2, the power supply and fault indication circuit 3 and the fault tripping and separating circuit 4 are respectively electrically connected to the controller, the controller comprises a single chip microcomputer 5 and a power supply circuit electrically connected to the single chip microcomputer 5, the power supply and fault indication circuit 3 comprises a power supply indication circuit and a fault indication circuit which are respectively electrically connected to the single chip microcomputer 5, the power supply indication circuit comprises a resistor R15 and an indicator light LED1, two ends of the resistor R15 are respectively connected to a pin 8 of the single chip microcomputer 5 and an anode of the indicator light LED1, a cathode of the indicator light LED1 is grounded, the fault indication circuit comprises a resistor R14 and an indicator light LED2, two ends of the resistor R14 are respectively connected to a pin 9 of the single chip microcomputer 5 and an anode of the indicator light LED2, and a cathode of the indicator light LED2 is grounded.

In the technical scheme, a singlechip, namely a Micro Controller Unit (MCU), properly reduces the frequency and specification of a Central Processing Unit (CPU), integrates memories (memory) on a single chip to form chip-level calculation, and can reserve pins or interfaces for function expansion, and belongs to the conventional technology, wherein an overvoltage sampling circuit is directly connected with a live wire of a circuit, and a fault tripping and separating gate circuit is connected with the live wire of the circuit and the singlechip through an arc module (not shown); when the overvoltage adopted by the overvoltage sampling circuit exceeds an overvoltage setting value, the single chip microcomputer controls the fault tripping and opening circuit to control tripping protection, the single chip microcomputer memorizes the fault generated by the overvoltage at the moment before tripping, and the indicating lamp LED2 flickers when the next reclosing power is on; when the circuit generates fault electric arc, the electric arc module controls the fault tripping and opening circuit to control tripping protection by signals, and at the moment before tripping, the fault generated by the electric arc is memorized by the singlechip, and when the circuit is switched on again next time, the indicating lamp LED2 can be flickered; the overvoltage sampling circuit and the arc module can adopt the prior art and are respectively connected to a pin 11 and a pin 3 of the singlechip, a pin 1(VDD) and a pin 14(VSS) of the singlechip are connected with a power circuit, and the pin 14 is grounded.

Illustratively, referring to FIG. 1, the indicator LED2 is provided with at least two blinking frequencies.

Among this technical scheme, pilot lamp LED1 uses as power indicator, marks the on-state of power, and pilot lamp LED2 uses as the fault indicator, and two kinds of scintillation frequencies correspond arc fault and excessive pressure trouble respectively, directly perceived reachs the fault reason, are convenient for take corresponding measure fast, eliminate hidden danger, protection power consumption safety.

Illustratively, referring to fig. 2, the fault tripping and opening circuit 4 includes an arc fault protection trigger circuit and an overvoltage protection trigger circuit connected in parallel to a control electrode of a silicon controlled rectifier SCR, a cathode of the silicon controlled rectifier SCR is grounded, an anode is connected to a surge protection circuit 6 through a diode D1, wherein the arc fault protection trigger circuit is connected to a pin 3 of the single chip microcomputer 5 through an arc module, and the overvoltage protection trigger circuit is connected to a pin 5 of the single chip microcomputer.

In the technical scheme, a Silicon Controlled Rectifier (SCR) is called as a thyristor for short, an arc fault protection trigger circuit is connected to a pin 3 of a single chip microcomputer through an arc module, when a circuit generates fault arc, signals of the arc module conduct the SCR through the arc fault protection trigger circuit so as to control tripping protection, faults generated by the arc are memorized through the single chip microcomputer at the moment before tripping, and an indicator light LED2 flickers when the circuit is switched on again next time; when the voltage adopted by the overvoltage sampling circuit exceeds an overvoltage setting value, the singlechip controls the conduction of the silicon controlled rectifier through the overvoltage protection trigger circuit so as to control the trip protection, the singlechip memorizes the fault generated by overvoltage at the moment before the trip, and the singlechip flickers the indicator light LED2 when the next reclosing power is on.

Illustratively, referring to fig. 2, the surge protection circuit 6 includes a live line L provided with a contact M1 and a contact M2, the contacts M1 and M2 are respectively connected to two ends of a coil of the trip unit, and one ends of the contacts M1 and M2, which are away from two ends of the coil (not shown) of the trip unit, are respectively connected to the neutral line N through a varistor RV1 and a varistor RV 2.

In the technical scheme, the surge protection circuit can effectively absorb the huge energy of overvoltage and arc fault burst so as to protect the connected equipment such as a release and the like from being damaged.

For example, referring to fig. 1, the analog test starting circuit 1 is connected to a jog switch (not shown) and is connected to a pin 7 of the single chip microcomputer.

In the technical scheme, a button switch is externally connected between contacts S1 and S2, when the contacts are clicked and pressed, a fault signal is generated in a simulation mode, the arc overvoltage flashlamp can trip and is used for point detection before use and in use, and the situation that the arc overvoltage flashlamp cannot be normally used and is unknown due to self faults is avoided; the circuit can also be added with resistance and/or capacitance to form a conventional protection circuit.

Illustratively, as shown in FIG. 3, a terminal bank J1 for a programming procedure is also included.

In the technical scheme, the terminal strip is correspondingly connected to a pin 4 (programming power supply VPP), a pin 13 (data input DAT) and a pin 12 (clock CLK) of the single chip microcomputer, and also comprises a power supply pin which is grounded and +5V, and the terminal strip can be downloaded by a row pin in a plug-in mode when a program is programmed, and is suspended at ordinary times.

In conclusion, the arc overvoltage flashing lamp is simple and practical, when an overvoltage fault and an arc fault occur, the fault tripping and tripping circuit controls tripping protection, faults caused by overvoltage and arc can be memorized instantly before tripping, the indicating lamp LED2 can flash when next reclosing power-on, the fault reason can be obtained visually, corresponding measures can be taken conveniently and quickly, hidden danger is eliminated, and electricity utilization safety is protected.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The foregoing is directed to embodiments of the present application and it is noted that numerous modifications and adaptations may be made by those skilled in the art without departing from the principles of the present application and are intended to be within the scope of the present application.

Claims (7)

1. The electric arc overvoltage flashing lamp is characterized by comprising a controller, a simulation test starting circuit, an overvoltage sampling circuit, a power supply and fault indicating circuit and a fault tripping and separating circuit, wherein the simulation test starting circuit, the overvoltage sampling circuit, the power supply and fault indicating circuit and the fault tripping and separating circuit are electrically connected to the controller respectively, the controller comprises a single chip microcomputer and a power supply circuit electrically connected to the single chip microcomputer, the power supply and fault indicating circuit comprises a power supply indicating circuit and a fault indicating circuit which are electrically connected to the single chip microcomputer respectively, the power supply indicating circuit comprises a resistor R15 and an indicating lamp LED1, two ends of the resistor R15 are connected to a pin of the single chip microcomputer and an anode of the indicating lamp LED1 respectively, a cathode of the indicating lamp LED1 is grounded, the fault indicating circuit comprises a resistor R14 and an indicating lamp LED2, two ends of the resistor R14 are connected to the pin of the single chip microcomputer and the anode of the indicating lamp LED2 respectively, and a cathode of the indicating lamp LED2 is grounded.

2. The arc overvoltage flash lamp of claim 1, wherein: the indicator light LED2 is provided with at least two flashing frequencies.

3. The arc overvoltage flash lamp of claim 1, wherein: the fault tripping and opening circuit comprises an arc fault protection trigger circuit and an overvoltage protection trigger circuit which are connected in parallel with a controlled silicon control electrode, wherein the cathode of the controlled silicon SCR is grounded, and the anode of the controlled silicon SCR is connected to the surge protection circuit through a diode D1.

4. The arc overvoltage flash lamp of claim 3, wherein: the surge protection circuit is including being provided with the live wire L of contact M1 and contact M2, contact M1 and contact M2 are connected respectively in the both ends of release subassembly coil, contact M1 and contact M2 deviate from the one end at the both ends of release subassembly coil and are connected in zero line N through piezo-resistor RV1 and piezo-resistor RV2 respectively.

5. The arc overvoltage flash lamp of claim 3, wherein: the arc fault protection trigger circuit is connected to the single chip microcomputer through the arc module.

6. The arc overvoltage flash lamp of claim 1, wherein: the simulation test starting circuit is connected with a inching switch.

7. The arc overvoltage flash lamp of claim 1, wherein: also included is terminal bank J1 for the programming process.

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