CN110445097A - A kind of idle motor protector - Google Patents
A kind of idle motor protector Download PDFInfo
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- CN110445097A CN110445097A CN201910709293.3A CN201910709293A CN110445097A CN 110445097 A CN110445097 A CN 110445097A CN 201910709293 A CN201910709293 A CN 201910709293A CN 110445097 A CN110445097 A CN 110445097A
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- diode
- circuit
- phase
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- mutual inductor
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/08—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors
- H02H7/085—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors against excessive load
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/08—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors
- H02H7/09—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors against over-voltage; against reduction of voltage; against phase interruption
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- Emergency Protection Circuit Devices (AREA)
- Protection Of Generators And Motors (AREA)
Abstract
The invention discloses a kind of idle motor protector, including current display circuit, the current display circuit includes LED1, LED2 and LED3；Mutual inductance circuit, for generating electricity by the A phase, B phase and C phase mutual inductance of external communication circuit；Open-phase protection circuit, for detecting the A phase, the phase shortage of B phase and C phase mutual inductance alternating current and normal and output signal of mutual inductance circuit；Overload protecting circuit, for overload current limit value to be arranged and detects whether mutual inductance circuit electric current overloads simultaneously output signal；Actuating circuit；Rectification circuit.The present invention is realized by A phase mutual inductor, B phase mutual inductor and C phase mutual inductor and is powered without accessory power supply to protector; reduce the volume of protector; reduce the cost of protector; and circuit operating condition can be understood by the induced current of three mutual inductors; convenient for implementing protection act to motor; current conditions are observed in real time by current display circuit, convenient for debugging reason.
Description
Technical field
The present invention relates to field of electromotor protectors more particularly to a kind of idle motor protectors.
Background technique
The effect of motor protector is that control is comprehensively protected to motor, overcurrent, disconnected phase, stall, short occurs in motor
When road, three-phase imbalance, overheat, bearing wear, rotor bias, winding aging alarmed or protected control.
The component part of the comprehensive motor protector of tradition usually has power circuit, sample of signal amplifying circuit, control
Circuit executes the composition such as relay, and usual volume is larger, is not suitable for micro-machine use occasion, and old-fashioned circuit has to separately
Add auxiliary power circuit that could work normally, such design can not only be such that manufacturing cost increases, and wiring but will be made also to become row fiber crops
It is tired, and the subsequent trouble safeguarded and become accordingly can be made.
Summary of the invention
The purpose of the present invention is to solve disadvantages existing in the prior art, and a kind of non-power consumption motivation proposed is protected
Protect device.
To achieve the goals above, present invention employs following technical solutions:
A kind of idle motor protector, comprising:
Current display circuit, the current display circuit include LED1, LED2 and LED3；
Mutual inductance circuit, for generating electricity by the A phase, B phase and C phase mutual inductance of external communication circuit；
Open-phase protection circuit, for detect the phase shortage of the A phase of mutual inductance circuit, B phase and C phase mutual inductance alternating current with it is normal and defeated
Signal out；
Whether overload protecting circuit overloads for overload current limit value to be arranged and detects mutual inductance circuit electric current and exports letter
Number；
Actuating circuit carries out circuit conducting by open-phase protection circuit and overload protecting circuit output signal and moves with what is turned off
Make.
Rectification circuit, the induction AC rectification that the mutual inductance circuit is generated at direct current and to current display circuit,
Open-phase protection circuit, overload protecting circuit and the power supply of action protection circuit.
Preferably, described LED1, LED2 and LED3 are in series with resistance R1, resistance R2 and resistance R3, the mutual electrification respectively
Road includes A phase mutual inductor, B phase mutual inductor and C phase mutual inductor, one end of the A phase mutual inductor be connected separately with diode DA1,
Diode DA2 and diode DA3, the other end of the A phase mutual inductor are connected separately with diode DA4 and diode DA5, and two
The conducting direction and diode of pole pipe DA4, the conducting direction and two poles of the diode DA1, diode DA2 and diode DA4
Pipe DA3 and diode DA5 conducting direction are opposite；
One end of the B phase mutual inductor is connected separately with diode DB1, diode DB2 and diode DB3, the B is mutual
The other end of sensor is connected separately with diode DB4 and diode DB5, and the conducting direction and diode of diode DB4, described
The conducting direction of diode DB1, diode DB2 and diode DB4 are opposite with diode DB3 and diode DB5 conducting direction；
One end of the C phase mutual inductor is connected separately with diode DC1, diode DC2 and diode DC3, the C is mutual
The other end of sensor is connected separately with diode DC4 and diode DC5, and the conducting direction and diode of diode DC4, described
The conducting direction of diode DC1, diode DC2 and diode DC4 are opposite with diode DC3 and diode DC5 conducting direction；
The diode DA3 and diode DA5, diode DB3 and diode DB5, diode DC3 and diode DC5 points
One end not far from A phase mutual inductor, B phase mutual inductor and C phase mutual inductor is grounded.
Preferably, the diode DA2, diode DA4, diode DB2, diode DB4, diode DC2, diode
DC4 is respectively further from the equal equipotential link in one end of A phase mutual inductor, B phase mutual inductor and C phase mutual inductor, can regard it as and be connected to
Same point.
Preferably, the rectification circuit includes the diode that A phase mutual inductor, B phase mutual inductor are connected with C phase mutual inductor respectively
DA1 and diode DA3, diode DB1 and diode DB3, diode DC1 and diode DC3, the rectification circuit further include with
Diode DA2, diode DA4, diode DB2, diode DB4, diode DC2, diode DC4 be respectively further from A phase mutual inductor,
The polar capacitor C1 that B phase mutual inductor is connected with one end of C phase mutual inductor, diode DA1 and diode DA3, diode DB1 and two
Pole pipe DB3, diode DC1 and the electric current of diode DC3 rectification pass through diode DA2, diode DA4, diode DB2, two poles
Pipe DB4, diode DC2, diode DC4 are transferred on polar capacitor C1 and are filtered, so that the voltage after rectified is more steady
It is fixed, it is suitble to power to each component.
Preferably, the open-phase protection circuit includes disconnected phase sample circuit, reference circuit, comparator U1A and comparator
U1B, the disconnected phase sample circuit are connected to the positive input terminal of comparator U1A and comparator U1B, the reference circuit difference
It is connected to the negative input end of comparator U1A and comparator U1B, reference circuit is connected to rectification by the both ends of resistance R14
It is real that circuit and comparator U1A, the negative input end of comparator U1B and resistance R15 are connected to the one end of resistance R14 far from rectification circuit
Mono- reference voltage value of comparator U1A and comparator U1B is now provided, disconnected phase sample circuit passes through by resistance R4 and resistance
R16 is connected to the positive input terminal of comparator U1B after connecting respectively with the both ends of polar capacitor C2, pass through resistance R5 and resistance R17
It is connected on the positive input terminal for being connected to comparator U1A after polar capacitor C3 respectively and is connected after resistance R6 and polar capacitor C4 series connection
In the positive input terminal of comparator U1A, when positive input terminal voltage is higher or lower than negative input end voltage, output protection signal,
When positive input terminal voltage is equal to negative input end voltage, work normally.
Preferably, the overload protecting circuit includes limit value setting circuit, overload sample circuit, comparator U1C and compares
Device U1D, the overload sample circuit are connected to the positive input terminal of comparator U1C and comparator U1D, the limit value setting electricity
Road is connected to the negative input end of comparator U1C and comparator U1D, and limit value is arranged circuit and passes through variable resistance VR2, adjustable electric
Resistance VR1 connect and pass through resistance R10 and resistance R9 be connected on respectively polar capacitor C5 both ends filter after pass through resistance RT and pole
Property capacitor C5 positive terminal be connected respectively to the negative input end of comparator U1C and comparator U1D limit value overload sampling electricity be provided
Road is connected to comparator U1C and comparator U1D after being connected to rectification circuit and diode DT by the both ends of R12 again
Positive input terminal circuital current value is provided, and the output end of comparator U1C is in series with light emitting diode RED, light emitting diode RED
It is in series with resistance RDR, resistance RDR is connected on rectification circuit, i.e., when overload sample circuit is output to comparator U1D and comparator
When the positive input end value of U1C is greater than the limit value of negative input end, comparator U1D output overloading protects signal, and light-emitting diode light RED
Overload prompt is issued by the output signal of comparator U1C.
Preferably, the actuating circuit includes triode Q1 and triode Q2, and the base stage of the triode Q1 is separately connected
There are comparator U1A, comparator U1B and comparator U1D, the collector of the triode Q1 is connect with the base stage of triode Q2, institute
The emitter of triode Q1 and the emitter connect and ground of triode Q2 are stated, the collector of the triode Q2 is connected with brilliant lock
The controllable end of pipe Q3, the actuating circuit are connected with external circuit by thyristor Q3, and the external circuit includes external relay
Device makes the base of triode Q1 by the disconnected phase signals or overload signal of comparator U1A, comparator U1B and comparator U1D output
Pole input voltage signal drags down, then triode Q2 is connected, then thyristor Q3 ends, so that external relay feed disconnects,
Disconnect the power supply of motor.
The invention has the following advantages:
1, A phase mutual inductor, B phase mutual inductor and C phase mutual inductor can either incude the signal of external communication electricity, while also can
Electric energy is provided to the component of the present apparatus, the purpose to motor protection can be realized without the power supply of additional independent current source, reduce
Device volume reduces installation cost.
2, circuit structure setting is simple, by the cooperation of triode and thyristor so that the power supply of turn-on and turn-off motor
Speed is accelerated, and increases the safety that motor uses, and each phase current situation can be observed in real time by current display circuit, just
In troubleshooting.
In conclusion the present invention is realized without accessory power supply by A phase mutual inductor, B phase mutual inductor and C phase mutual inductor to guarantor
Device power supply is protected, the volume of protector is reduced, reduces the cost of protector, and can understand by the induced current of three mutual inductors
Circuit operating condition observes current conditions by current display circuit convenient for implementing protection act to motor in real time, convenient for row
Except failure cause.
Detailed description of the invention
Fig. 1 is a kind of circuit connection diagram of idle motor protector proposed by the present invention；
Fig. 2 is a kind of open-phase protection circuit part connection schematic diagram of idle motor protector proposed by the present invention；
Fig. 3 is a kind of overload protecting circuit part connection schematic diagram of idle motor protector proposed by the present invention；
Fig. 4 is a kind of actuating circuit part connection schematic diagram of idle motor protector proposed by the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.
In the description of the present invention, it is to be understood that, term " on ", "lower", "front", "rear", "left", "right", "top",
The orientation or positional relationship of the instructions such as "bottom", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings, merely to just
In description the present invention and simplify description, rather than the device or element of indication or suggestion meaning must have a particular orientation, with
Specific orientation construction and operation, therefore be not considered as limiting the invention.
Referring to Fig.1-4, a kind of idle motor protector, comprising:
Current display circuit, current display circuit include LED1, LED2 and LED3；
Mutual inductance circuit, for generating electricity by the A phase, B phase and C phase mutual inductance of external communication circuit；
Open-phase protection circuit, for detect the phase shortage of the A phase of mutual inductance circuit, B phase and C phase mutual inductance alternating current with it is normal and defeated
Signal out；
Whether overload protecting circuit overloads for overload current limit value to be arranged and detects mutual inductance circuit electric current and exports letter
Number；
Actuating circuit carries out circuit conducting by open-phase protection circuit and overload protecting circuit output signal and moves with what is turned off
Make.
Rectification circuit, the induction AC rectification that mutual inductance circuit is generated is at direct current and to current display circuit, disconnected phase
Protect circuit, overload protecting circuit and the power supply of action protection circuit.
LED1, LED2 and LED3 are in series with resistance R1, resistance R2 and resistance R3 respectively, mutual inductance circuit include A phase mutual inductor,
B phase mutual inductor and C phase mutual inductor, one end of A phase mutual inductor are connected separately with diode DA1, diode DA2 and diode DA3,
The other end of A phase mutual inductor is connected separately with diode DA4 and diode DA5, and the conducting direction of diode DA4 and two poles
Pipe, conducting direction and the diode DA3 and diode DA5 conducting direction phase of diode DA1, diode DA2 and diode DA4
Instead；
One end of B phase mutual inductor is connected separately with the another of diode DB1, diode DB2 and diode DB3, B phase mutual inductor
One end is connected separately with diode DB4 and diode DB5, and the conducting direction and diode of diode DB4, diode DB1, two
The conducting direction of pole pipe DB2 and diode DB4 are opposite with diode DB3 and diode DB5 conducting direction；
One end of C phase mutual inductor is connected separately with the another of diode DC1, diode DC2 and diode DC3, C phase mutual inductor
One end is connected separately with diode DC4 and diode DC5, and the conducting direction and diode of diode DC4, diode DC1, two
The conducting direction of pole pipe DC2 and diode DC4 are opposite with diode DC3 and diode DC5 conducting direction；
Diode DA3 and diode DA5, diode DB3 and diode DB5, diode DC3 and diode DC5 difference are remote
One end from A phase mutual inductor, B phase mutual inductor and C phase mutual inductor is grounded.
Diode DA2, diode DA4, diode DB2, diode DB4, diode DC2, diode DC4 are respectively further from A
The equal equipotential link in one end of phase mutual inductor, B phase mutual inductor and C phase mutual inductor, can regard it as and be connected to same point.
Rectification circuit includes the diode DA1 and diode that A phase mutual inductor, B phase mutual inductor are connected with C phase mutual inductor respectively
DA3, diode DB1 and diode DB3, diode DC1 and diode DC3, rectification circuit further include and diode DA2, two poles
Pipe DA4, diode DB2, diode DB4, diode DC2, diode DC4 are respectively further from A phase mutual inductor, B phase mutual inductor and C phase
Polar capacitor C1, diode DA1 and diode DA3, diode DB1 and the diode DB3, diode that one end of mutual inductor connects
The electric current of DC1 and diode DC3 rectification passes through diode DA2, diode DA4, diode DB2, diode DB4, diode
DC2, diode DC4 are transferred on polar capacitor C1 and are filtered, so that the voltage after rectified is more stable, are suitble to each
Component power supply.
Open-phase protection circuit includes disconnected phase sample circuit, reference circuit, comparator U1A and comparator U1B, breaks and mutually samples electricity
Road is connected to the positive input terminal of comparator U1A and comparator U1B, and reference circuit is connected to comparator U1A and compares
The negative input end of device U1B, reference circuit are connected to rectification circuit and comparator U1A, comparator by the both ends of resistance R14
The negative input end and resistance R15 of U1B is connected to resistance R14 and realizes offer comparator U1A far from one end of rectification circuit and compare
Mono- reference voltage value of device U1B, break phase sample circuit by by resistance R4 and resistance R16 respectively with polar capacitor C2 two
It is connected to the positive input terminal of comparator U1B after the series connection of end, connects after being connected on polar capacitor C3 respectively by resistance R5 and resistance R17
The positive input terminal that comparator U1A is connected to after positive input terminal and resistance R6 and polar capacitor the C4 series connection of comparator U1A is connect, when
When positive input terminal voltage is higher or lower than negative input end voltage, output protection signal, when positive input terminal voltage is equal to negative input
When holding voltage, work normally.
Overload protecting circuit includes that limit value setting circuit, overload sample circuit, comparator U1C and comparator U1D, overload take
Sample circuit is connected to the positive input terminal of comparator U1C and comparator U1D, and limit value setting circuit is connected to comparator
The negative input end of U1C and comparator U1D, limit value are arranged circuit and connect by variable resistance VR2, adjustable resistance VR1 and pass through electricity
Resistance R10 and resistance R9 is divided after being connected on the both ends filtering of polar capacitor C5 respectively by the positive terminal of resistance RT and polar capacitor C5
The negative input end for not being connected to comparator U1C and comparator U1D provides limit value overload sample circuit and is distinguished by the both ends of R12
It is connected to and is connected to the positive input terminal of comparator U1C and comparator U1D after rectification circuit and diode DT again circuit is provided
Current value, and the output end of comparator U1C is in series with light emitting diode RED, light emitting diode RED is in series with resistance RDR, resistance
RDR is connected on rectification circuit, i.e., when overload sample circuit be output to comparator U1D and comparator U1C positive input end value it is big
When the limit value of negative input end, comparator U1D output overloading protects signal, and light-emitting diode light RED passes through the defeated of comparator U1C
Signal issues overload prompt out.
Actuating circuit includes triode Q1 and triode Q2, and the base stage of triode Q1 is connected separately with comparator U1A, compares
The collector of device U1B and comparator U1D, triode Q1 are connect with the base stage of triode Q2, the emitter of triode Q1 and three poles
The emitter connect and ground of pipe Q2, the collector of triode Q2 are connected with the controllable end of thyristor Q3, and actuating circuit passes through crystalline substance
Brake tube Q3 is connected with external circuit, and external circuit includes external relay, passes through comparator U1A, comparator U1B and comparator
The disconnected phase signals or overload signal of U1D output drag down the base stage input voltage signal of triode Q1, then make triode Q2
Conducting, then thyristor Q3 ends, so that external relay feed disconnects, that is, disconnects the power supply of motor.
In the use of the present invention, open-phase protection: by the resistance R14 and resistance R15 of reference circuit be supplied to comparator U1A and
One a reference value of comparator U1B negative input end, by resistance R4, resistance R16, resistance R5, the resistance R17, pole of the phase sample circuit that breaks
Property capacitor C3, resistance R6, polar capacitor C4 are supplied to one sampling value of comparator U1A and comparator U1B positive input terminal, comparator
U1A and comparator U1B comparison a reference value and sampling value, when a reference value and sampling value are unequal, then comparator U1A and comparator
U1B exports open-phase protection signal to actuating circuit, then the base potential of triode Q1 can be undercuted, triode Q2 conducting, brilliant lock
Pipe Q3 cut-off, then external relay feed disconnects, so that motor power is cut off, protects motor；
Overload protection: circuit overloads protection is adjusted by the variable resistance VR2 of limitation setting circuit, adjustable resistance VR1
Limit value, limit value are respectively outputted to the negative input end of comparator U1C and comparator U1D, by overload sample circuit resistance R12 and
Diode DT is supplied to one sampling value of comparator U1C and comparator U1D positive input terminal, when sampling value is greater than limit value, compares
Device U1D output overloading protects signal to actuating circuit, then the base potential of triode Q1 can be undercuted, triode Q2 conducting, brilliant
Brake tube Q3 cut-off, then external relay feed disconnects, so that motor power is cut off, protects motor, comparator U1C output
Overload signal makes the light emitting diode RED for being connected to comparator U1C output end issue prompting.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (7)
1. a kind of idle motor protector, comprising:
Current display circuit, the current display circuit include LED1, LED2 and LED3；
Mutual inductance circuit, for generating electricity by the A phase, B phase and C phase mutual inductance of external communication circuit；
Open-phase protection circuit, for detecting the phase shortage of the A phase of mutual inductance circuit, B phase and C phase mutual inductance alternating current and normal and export letter
Number；
Overload protecting circuit, for overload current limit value to be arranged and detects whether mutual inductance circuit electric current overloads simultaneously output signal；
Actuating circuit carries out the movement of circuit conducting and shutdown by open-phase protection circuit and overload protecting circuit output signal；
Rectification circuit, the induction AC rectification that the mutual inductance circuit is generated is at direct current and to current display circuit, disconnected phase
Protect circuit, overload protecting circuit and the power supply of action protection circuit.
2. a kind of idle motor protector according to claim 1, which is characterized in that described LED1, LED2 and
LED3 is in series with resistance R1, resistance R2 and resistance R3 respectively, and the mutual inductance circuit includes A phase mutual inductor, B phase mutual inductor and C phase
Mutual inductor, one end of the A phase mutual inductor is connected separately with diode DA1, diode DA2 and diode DA3, the A is mutual
The other end of sensor is connected separately with diode DA4 and diode DA5, and the conducting direction and diode of diode DA4, described
The conducting direction of diode DA1, diode DA2 and diode DA4 are opposite with diode DA3 and diode DA5 conducting direction；
One end of the B phase mutual inductor is connected separately with diode DB1, diode DB2 and diode DB3, the B phase mutual inductor
The other end be connected separately with diode DB4 and diode DB5, and the conducting direction and diode of diode DB4, two pole
The conducting direction of pipe DB1, diode DB2 and diode DB4 are opposite with diode DB3 and diode DB5 conducting direction；
One end of the C phase mutual inductor is connected separately with diode DC1, diode DC2 and diode DC3, the C phase mutual inductor
The other end be connected separately with diode DC4 and diode DC5, and the conducting direction and diode of diode DC4, two pole
The conducting direction of pipe DC1, diode DC2 and diode DC4 are opposite with diode DC3 and diode DC5 conducting direction.
3. a kind of idle motor protector according to claim 2, which is characterized in that the diode DA2, two poles
Pipe DA4, diode DB2, diode DB4, diode DC2, diode DC4 are respectively further from A phase mutual inductor, B phase mutual inductor and C phase
The equal equipotential link in one end of mutual inductor can regard it as and be connected to same point.
4. a kind of idle motor protector according to claim 3, which is characterized in that the rectification circuit includes point
The diode DA1 and diode DA3, diode DB1 and diode that other A phase mutual inductor, B phase mutual inductor are connected with C phase mutual inductor
DB3, diode DC1 and diode DC3, the rectification circuit further include and diode DA2, diode DA4, diode DB2, two
Pole pipe DB4, diode DC2, diode DC4 are respectively further from A phase mutual inductor, B phase mutual inductor is connected with one end of C phase mutual inductor
Polar capacitor C1.
5. a kind of idle motor protector according to claim 1, which is characterized in that the open-phase protection circuit packet
It includes disconnected phase sample circuit, reference circuit, comparator U1A and comparator U1B, the disconnected phase sample circuit and is connected to comparator
The positive input terminal of U1A and comparator U1B, the reference circuit are connected to the negative input of comparator U1A and comparator U1B
End.
6. a kind of idle motor protector according to claim 5, which is characterized in that the overload protecting circuit packet
It includes limit value setting circuit, overload sample circuit, comparator U1C and comparator U1D, the overload sample circuit and is connected to ratio
Compared with the positive input terminal of device U1C and comparator U1D, the limit value setting circuit is connected to comparator U1C's and comparator U1D
Negative input end.
7. a kind of idle motor protector according to claim 6, which is characterized in that the actuating circuit includes three
Pole pipe Q1 and triode Q2, the base stage of the triode Q1 are connected separately with comparator U1A, comparator U1B and comparator U1D,
The collector of the triode Q1 is connect with the base stage of triode Q2, the transmitting of the emitter and triode Q2 of the triode Q1
Pole connect and ground, the actuating circuit are connected with external relay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910709293.3A CN110445097A (en) | 2019-07-24 | 2019-07-24 | A kind of idle motor protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910709293.3A CN110445097A (en) | 2019-07-24 | 2019-07-24 | A kind of idle motor protector |
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| Publication Number | Publication Date |
|---|---|
| CN110445097A true CN110445097A (en) | 2019-11-12 |
Family
ID=68432829
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910709293.3A Pending CN110445097A (en) | 2019-07-24 | 2019-07-24 | A kind of idle motor protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110445097A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115207880A (en) * | 2022-08-09 | 2022-10-18 | 河北烈焰机械工程有限公司 | Intelligent asphalt mixing equipment management system |
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| CN2195816Y (en) * | 1994-08-02 | 1995-04-26 | 汪贤林 | Phase interruption overload protective device for electric motor |
| CN101119025A (en) * | 2007-04-25 | 2008-02-06 | 欣灵电气股份有限公司 | Signal sample circuit for electronic type electric motor protective equipment |
| CN202772554U (en) * | 2012-07-19 | 2013-03-06 | 浙江泰华电器有限公司 | Motor protector capable of digitally setting current value |
| CN205141633U (en) * | 2015-11-12 | 2016-04-06 | 上海三开电气有限公司 | Idle power consumptive motivation protection circuit |
| CN205791468U (en) * | 2016-06-02 | 2016-12-07 | 常安集团有限公司 | Integrated protector for electric motor |
| CN207732413U (en) * | 2017-12-30 | 2018-08-14 | 欣灵电气股份有限公司 | Motor protector circuit |
-
2019
- 2019-07-24 CN CN201910709293.3A patent/CN110445097A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2195816Y (en) * | 1994-08-02 | 1995-04-26 | 汪贤林 | Phase interruption overload protective device for electric motor |
| CN101119025A (en) * | 2007-04-25 | 2008-02-06 | 欣灵电气股份有限公司 | Signal sample circuit for electronic type electric motor protective equipment |
| CN202772554U (en) * | 2012-07-19 | 2013-03-06 | 浙江泰华电器有限公司 | Motor protector capable of digitally setting current value |
| CN205141633U (en) * | 2015-11-12 | 2016-04-06 | 上海三开电气有限公司 | Idle power consumptive motivation protection circuit |
| CN205791468U (en) * | 2016-06-02 | 2016-12-07 | 常安集团有限公司 | Integrated protector for electric motor |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115207880A (en) * | 2022-08-09 | 2022-10-18 | 河北烈焰机械工程有限公司 | Intelligent asphalt mixing equipment management system |
| CN115207880B (en) * | 2022-08-09 | 2023-12-19 | 河北烈焰机械工程有限公司 | Intelligent asphalt mixing equipment management system |
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| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20191112 |
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| RJ01 | Rejection of invention patent application after publication |