CN212180906U - Three-phase live indicating circuit - Google Patents
Three-phase live indicating circuit Download PDFInfo
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- CN212180906U CN212180906U CN202020469847.5U CN202020469847U CN212180906U CN 212180906 U CN212180906 U CN 212180906U CN 202020469847 U CN202020469847 U CN 202020469847U CN 212180906 U CN212180906 U CN 212180906U
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Abstract
The utility model relates to an electrified indicating circuit of three-phase, a serial communication port, include: the circuit breaker, power processing circuit, signal processing circuit through the electricity connection, signal processing circuit includes three routes operational amplifier. When the ABC three-phase circuit passes through the circuit breaker, when the ABC three-phase power supply is normal, the ABC three-phase power supply enters the three-way operational amplifier to light the three-way indicator lamps, if any phase of the ABC three phases of the circuit breaker is lack or the voltage is lost, the corresponding indicator lamps are turned off, the circuit is simple and reliable, the control is stable, and the ABC three-phase power supply can be generally applied to electronic circuit systems.
Description
Technical Field
The utility model relates to an electrified technical field that instructs, more specifically say, relate to an electrified indicating circuit of three-phase.
Background
The live indicating circuit is a prompt safety circuit which is directly installed on indoor electrical equipment and visually displays whether equipment to be tested has operating voltage. The existing live indicating circuit can be divided into an active type and a passive type according to working modes, wherein the active type and the passive type need an external power supply for working, and the passive type does not need the external power supply and obtains induction energy from equipment to be tested by utilizing the active type and the passive type to provide a working power supply. The live indicating circuit working in a passive mode has the advantages of simple structure, convenience in maintenance, long service life and the like. The common electrification indicating circuit mainly comprises an induction module and a display module, wherein the induction module is used for acquiring induction energy from equipment to be tested in a safety range in a non-contact mode and then transmitting the induction energy to the display module, the display module enables the induction energy to act on the flash component, and whether the equipment to be tested is electrified or not is indicated through the light emitting condition of the flash component. When the equipment to be tested is electrified, the induction module acquires induction energy and finally applies the induction energy to the flash component to enable the flash component to emit light to indicate that the equipment to be tested is electrified; and when the equipment to be tested is not electrified, the induction module cannot acquire induction energy, and the flash component does not emit light or indicate that the equipment to be tested is not electrified. Since the device under test applied to the three-phase electrical system needs to measure the electrification of 3 wires (a wire, B wire and C wire), such electrification indicating circuit is configured with 3 sets of flashing components to respectively indicate whether the a wire, the B wire and the C wire are electrified or not. Considering that 3 flash units occupy a certain surface area of the housing, the miniaturized design of the live indicating circuit is limited, and therefore, improvement is necessary.
Thus, significant advances in the art are needed.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model lies in, to the foretell defect of prior art, provide an electrified indicating circuit of three-phase, include: the circuit breaker, power processing circuit, signal processing circuit through the electricity connection, signal processing circuit includes three routes operational amplifier.
In the three-phase live indicating circuit of the present invention, the power processing circuit includes: through the rectifier filter circuit and the voltage stabilizing circuit that electrically connect.
In the three-phase live indicating circuit, the circuit breaker is a molded case circuit breaker.
In the three-phase power-on indication circuit of the present invention, the three-way operational amplifier includes a resistor RiACapacitor CAResistance RfAOperational amplifier UAResistance RoALed, resistance RiBCapacitor CBResistance RfBOperational amplifier UBResistance RoBLED LEDB, resistance RiCCapacitor CCResistance RfCOperational amplifier UCResistance RoCA light emitting diode LEDC;
the resistance RiAIs connected with the A phase circuit, and the resistor RiAThe other end of each of the first and second capacitors is connected to a capacitor CAOne terminal of (1), resistance RfAOne terminal of (1), operational amplifier UAIs connected with the non-inverting input terminal of the capacitor CAIs grounded, an operational amplifier UARespectively with the resistor RfAAnother terminal of (3), resistance RoAIs connected to one end of a resistor RoAThe other end of the anode is connected with the anode of a light emitting diode LEDA;
the resistance RiBIs connected with the B phase circuit, and the resistor RiBThe other end of each of the first and second capacitors is connected to a capacitor CBOne terminal of (1), resistance RfBOne terminal of (1), operational amplifier UBIs connected with the non-inverting input terminal of the capacitor CBIs grounded, an operational amplifier UBRespectively with the resistor RfBAnother terminal of (3), resistance RoBIs connected to one end of a resistor RoBThe other end of the anode is connected with the anode of the light emitting diode LEDB;
the resistance RiCIs connected with the C phase circuit, the resistance RiCThe other end of each of the first and second capacitors is connected to a capacitor CCOne terminal of (1), resistance RfCOne terminal of (1), operational amplifier UCIs connected with the non-inverting input terminal of the capacitor CCIs grounded, an operational amplifier UCRespectively with the resistor RfCAnother terminal of (3), resistance RoCIs connected to one end of a resistor RoCThe other end of the anode is connected with the anode of the light emitting diode LEDB;
operational amplifier UAAnd operational amplifier UBInverting input terminal of (1), operational amplifier UCIs connected with the negative electrode of the light emitting diode LEDB and the negative electrode of the light emitting diode LEDC, and is connected with the negative electrode of the light emitting diode LEDAAnd (3) ground.
In the three-phase live indicating circuit of the present invention, the circuit breaker includes a switch KASwitch KBSwitch KCSwitch KN。
Implement the utility model discloses an electrified indicating circuit of three-phase has following beneficial effect: when the ABC three-phase circuit passes through the circuit breaker, when the ABC three-phase power supply is normal, the ABC three-phase power supply enters the three-way operational amplifier to light the three-way indicator lamps, if any phase of the ABC three phases of the circuit breaker is lack or the voltage is lost, the corresponding indicator lamps are turned off, the circuit is simple and reliable, the control is stable, and the ABC three-phase power supply can be generally applied to electronic circuit systems.
Drawings
The invention will be further explained with reference to the drawings and examples, wherein:
fig. 1 is a circuit structure diagram of the three-phase live indicating circuit of the present invention.
Detailed Description
Fig. 1 is a circuit diagram of the three-phase live indicating circuit of the present invention. As shown in fig. 1, the utility model discloses in the electrified indicating circuit of three-phase that the first embodiment provided, include at least, through circuit breaker, power processing circuit, the signal processing circuit of electricity connection, the signal processing circuit includes three routes operational amplifier.
The power supply processing circuit includes: through the rectifier filter circuit and the voltage stabilizing circuit that electrically connect. The direct current output by the rectification circuit contains certain alternating current components which are not in line with the requirements of equipment, and filtering measures are adopted to filter the alternating current components in the pulsating direct current as much as possible. The inductance, the capacitance and the resistance are adopted to form a certain filter circuit, the characteristic of the capacitance allows the alternating current component to pass through and prevents the direct current component, the capacitance is connected in parallel at two ends of the rectification circuit to provide a path for the alternating current component in the output direct current, and the alternating current component directly flows back to a power supply from a capacitor loop without passing through a load. In order to provide stable output voltage for a load, the types of voltage stabilizing circuits are various, and voltage stabilization by a voltage stabilizing tube, voltage stabilization by an integrated block three-terminal voltage regulator, a series voltage stabilizing circuit and a switch voltage stabilizing circuit are commonly used.
In specific implementation, the Circuit breaker is preferably a Molded Case Circuit Breaker (MCCB), for example, the model MCCB may be MM 6. Of course, other circuit breakers meeting the requirements can be selected according to the needs, and the model of the circuit breaker is not limited herein.
The three-way operational amplifier comprises a resistor RiACapacitor CAResistance RfAOperational amplifier UAResistance RoALed, resistance RiBCapacitor CBResistance RfBOperational amplifier UBResistance RoBLED LEDB, resistance RiCCapacitor CCResistance RfCOperational amplifier UCResistance RoCA light emitting diode LEDC; resistance RiAIs connected with the A phase circuit, and a resistor RiAThe other end of each of the first and second capacitors is connected to a capacitor CAOne terminal of (1), resistance RfAOne terminal of (1), operational amplifier UAIs connected with the non-inverting input terminal of the capacitor CAIs grounded, an operational amplifier UARespectively with the resistor RfAAnother terminal of (3), resistance RoAIs connected to one end of a resistor RoAThe other end of the anode is connected with the anode of a light emitting diode LEDA; resistance RiBIs connected with the B phase circuit, and a resistor RiBThe other end of each of the first and second capacitors is connected to a capacitor CBOne terminal of (1), resistance RfBOne terminal of (1), operational amplifier UBIs connected with the non-inverting input terminal of the capacitor CBIs grounded, an operational amplifier UBRespectively with the resistor RfBAnother terminal of (3), resistance RoBIs connected to one end of a resistor RoBThe other end of the anode is connected with the anode of the light emitting diode LEDB; resistance RiCIs connected with the C phase circuit, and a resistor RiCThe other end of each of the first and second capacitors is connected to a capacitor CCOne terminal of (1), resistance RfCOne terminal of (1), operational amplifier UCIs connected with the non-inverting input terminal of the capacitor CCIs grounded, an operational amplifier UCRespectively with the resistor RfCAnother terminal of (3), resistance RoCIs connected to one end of a resistor RoCThe other end of the anode is connected with the anode of the light emitting diode LEDB; operational amplifier UAAnd operational amplifier UBInverting input terminal of (1), operational amplifier UCIs connected to the negative input terminal of the led, and the negative electrode of the led LEDA is connected to the negative electrode of the led LEDB and the negative electrode of the led LEDC and grounded. The light emitting diodes LEDA, LEDB and LEDC are respectively used as the electrified indicating lamps of the A phase, the B phase and the C phase of the three-phase power.
The circuit breaker comprises a switch KASwitch KBSwitch KCSwitch KN. Switch KASwitch KBSwitch KCSwitch KNThe phase A, the phase B, the phase C and the neutral line N (zero line) of the three-phase power are respectively controlled to be closed and opened.
The three-phase power ABC is used for distinguishing the phase sequence of the power, the phase sequence is generally distinguished by colors in the power, generally yellow lines (or yellow marks) represent the phase A, green represents the phase B, and red represents the phase C. The N line is a neutral line, and is generally a blue line even if it is a zero line. The live wire is generally a low voltage below 380V, and the low-voltage connection is generally a three-phase four-wire system, that is, three live wires (live), one zero wire (neutral) and a three-phase five-wire system (one more protection wire than a three-phase four-wire system), and which method is specifically adopted generally depends on the grounding and protection method. The main function of distinguishing the phase sequence is to ensure load balance. The utility model discloses the electrified operating principle of indicating circuit of three-phase is: when the ABC three-phase circuit passes through the interior of the circuit breaker MCCB, when the ABC three-phase power supply is normal, the ABC three-phase power supply respectively enters the three operational amplifiers to light the three indicator lamps LEDA, LEDB and LEDC, and if the circuit breaker ABC lacks any phase or loses voltage, the circuit breaker K of the circuit breaker turns on the circuit breakerASwitch KBSwitch KCSwitch KNThe three-phase power supply system is characterized in that the A phase, the B phase, the C phase and the N neutral line (zero line) of three-phase power are respectively controlled to be closed or opened, and correspondingly, LEDA (lead insulated wire), LEDB (lead insulated wire) and LEDC (lead insulated wire) indicating lamps are closed or opened.
The utility model discloses a design of above embodiment, its beneficial effect is: when the ABC three-phase circuit passes through the circuit breaker, when the ABC three-phase power supply is normal, the ABC three-phase power supply enters the three-way operational amplifier to light the three-way indicator lamps, if any phase of the ABC three phases of the circuit breaker is lack or the voltage is lost, the corresponding indicator lamps are turned off, the circuit is simple and reliable, the control is stable, and the ABC three-phase power supply can be generally applied to electronic circuit systems.
While the invention has been described with reference to specific embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the scope of the invention. Furthermore, to adapt to the particular situation of the technology of the present invention, it is possible to make numerous modifications to the present invention without departing from its scope of protection. Therefore, it is intended that the invention not be limited to the particular embodiments disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.
Claims (3)
1. A three-phase live-indication circuit, comprising: the circuit breaker, the power supply processing circuit and the signal processing circuit are electrically connected, and the signal processing circuit comprises three operational amplifiers; the power supply processing circuit includes: a rectification filter circuit and a voltage stabilizing circuit which are electrically connected;
the three-way operational amplifier comprises a resistor RiACapacitor CAResistance RfAOperational amplifier UAResistance RoALed, resistance RiBCapacitor CBResistance RfBOperational amplifier UBResistance RoBLED LEDB, resistance RiCCapacitor CCResistance RfCOperational amplifier UCResistance RoCA light emitting diode LEDC;
the resistance RiAIs connected with the A phase circuit, and the resistor RiAThe other end of each of the first and second capacitors is connected to a capacitor CAOne terminal of (1), resistance RfAOne terminal of (1), operational amplifier UAIs connected with the non-inverting input terminal of the capacitor CAIs grounded, an operational amplifier UARespectively with the resistor RfAAnother terminal of (3), resistance RoAIs connected to one end of a resistor RoAThe other end of the anode is connected with the anode of a light emitting diode LEDA;
the resistance RiBIs connected with the B phase circuit, and the resistor RiBThe other end of each of the first and second capacitors is connected to a capacitor CBOne terminal of (1), resistance RfBOne terminal of (1), operational amplifier UBIs connected with the non-inverting input terminal of the capacitor CBIs grounded, an operational amplifier UBRespectively with the resistor RfBAnother terminal of (3), resistance RoBIs connected to one end of a resistor RoBThe other end of the anode is connected with the anode of the light emitting diode LEDB;
the resistance RiCIs connected with the C phase circuit, the resistance RiCThe other end of each of the first and second capacitors is connected to a capacitor CCOne terminal of (1), resistance RfCOne terminal of (1), operational amplifier UCIs connected with the non-inverting input terminal of the capacitor CCIs grounded, an operational amplifier UCRespectively with the resistor RfCAnother terminal of (3), resistance RoCIs connected to one end of a resistor RoCThe other end of the anode is connected with the anode of the light emitting diode LEDB;
operational amplifier UAAnd operational amplifier UBInverting input terminal of (1), operational amplifier UCIs connected to the negative input terminal of the led, and the negative electrode of the led LEDA is connected to the negative electrode of the led LEDB and the negative electrode of the led LEDC and grounded.
2. The three-phase live indicating circuit of claim 1, wherein the circuit breaker is a molded case circuit breaker.
3. Three-phase live indicating circuit according to claim 1, characterized in that the circuit breaker comprises a switch KASwitch KBSwitch KCSwitch KN。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020469847.5U CN212180906U (en) | 2020-04-02 | 2020-04-02 | Three-phase live indicating circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020469847.5U CN212180906U (en) | 2020-04-02 | 2020-04-02 | Three-phase live indicating circuit |
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| CN212180906U true CN212180906U (en) | 2020-12-18 |
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| CN202020469847.5U Active CN212180906U (en) | 2020-04-02 | 2020-04-02 | Three-phase live indicating circuit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113053078A (en) * | 2021-03-10 | 2021-06-29 | 黄振军 | Hospital ward-round reminder circuit |
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2020
- 2020-04-02 CN CN202020469847.5U patent/CN212180906U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113053078A (en) * | 2021-03-10 | 2021-06-29 | 黄振军 | Hospital ward-round reminder circuit |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 325000 396 Chezhan Road, Liushi Town, Yueqing City, Wenzhou City, Zhejiang Province Patentee after: Minpu Electric Group Co., Ltd Address before: 325000 Huancheng East Road, Houjie Industrial Zone, Liushi Town, Yueqing City, Wenzhou City, Zhejiang Province Patentee before: MINPU ELECTRIC Co.,Ltd. |
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| CP03 | Change of name, title or address |