CN207441619U - A kind of breaker of plastic casing controller - Google Patents
A kind of breaker of plastic casing controller Download PDFInfo
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- CN207441619U CN207441619U CN201721329836.1U CN201721329836U CN207441619U CN 207441619 U CN207441619 U CN 207441619U CN 201721329836 U CN201721329836 U CN 201721329836U CN 207441619 U CN207441619 U CN 207441619U
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Abstract
A kind of breaker of plastic casing controller, including central processing unit, current sampling circuit, signal amplification circuit, ADC conversion circuits, BJ signal input modules, HZ signal output modules, FZ signal output modules, TTL conversion circuits, RS485 communicating circuits, power amplification circuit, dropout output circuit, working state circuit, power supply circuit, central processing unit peripheral circuit and function setting module；The current sampling circuit is connected by signal amplification circuit with the input terminal of ADC conversion circuits, and the output terminal of ADC conversion circuits is connected with the current signal input of central processing unit.The utility model has stronger antijamming capability using the above structure, compared to the defencive function of conventional circuit breaker, relatively stable actuation time, ensure that breaker actuation is efficient in time, improves the operational paradigm of electric power system；Protection precision is improved simultaneously, the overload capacity of breaker is enhanced, ensure that Electrical Safety.
Description
Technical field：
The utility model is related to breaker control technical field, especially a kind of breaker of plastic casing controller.
Background technology：
At present, the defencive function of traditional breaker is completed by electromagnetic component, poor anti jamming capability, action
Time is long, and protection precision is relatively low, adjusts relatively difficult；And without self-test and self-diagnostic function, if element is subject to
Damage, it is most likely that cause malfunction.As requirement of the people to electric power system the degree of automation is higher and higher, to breaker
Higher requirement is proposed, people’s lives are used in making overlong time and influencing the operational paradigm of electric power system for dynamic breaker
Electricity and commercial power exert an adverse impact；Protection precision difference can cause breaker that can not judge current fault condition in time,
It causes that supply line, generation electrification or even initiation economic loss cannot be cut off in time.
Utility model content：
The utility model provides a kind of breaker of plastic casing controller, it is reasonable in design, compared to conventional circuit breaker
Defencive function have a stronger antijamming capability, relatively stable actuation time, ensure that breaker actuation is efficient in time, improve
The operational paradigm of electric power system；Protection precision is improved simultaneously, the overload capacity of breaker is enhanced, ensure that Electrical Safety,
Solve problems of the prior art.
Used technical solution is the utility model to solve above-mentioned technical problem：
A kind of breaker of plastic casing controller, including central processing unit, current sampling circuit, signal amplification circuit, ADC conversions
Circuit, TTL conversion circuits, RS485 communicating circuits, power amplification circuit, BJ signal input modules, HZ signal output modules, FZ
Signal output module, dropout output circuit, working state circuit, power supply circuit, central processing unit peripheral circuit and function setting
Module；The current sampling circuit is connected by signal amplification circuit with the input terminal of ADC conversion circuits, ADC conversion circuits
Output terminal is connected with the current signal input of central processing unit, and BJ signal input modules, HZ signal output modules, FZ signals are defeated
Go out module with central processing unit to be connected, the signal communication section of central processing unit passes through TTL conversion circuits and RS485 communicating circuits
It is connected, the dropout control terminal of central processing unit is connected by power amplification circuit with dropout output circuit, and central controller is shown
Show that end is connected with working state circuit, power supply circuit is powered to central controller and peripheral circuit, and the function of central controller is set
End is put with function setting module to be connected；
The current sampling circuit includes signal acquisition circuit, signal conditioning circuit, rectification circuit and regulator circuit, described
Signal acquisition circuit, signal conditioning circuit, rectification circuit and regulator circuit are sequentially connected；The central processing unit peripheral circuit bag
Include clock circuit, crystal oscillating circuit, reset circuit, knob control circuit and EPROM storage circuits, the clock circuit, crystal oscillator electricity
Road, reset circuit, knob control circuit and EPROM storage circuits are connected respectively at central controller.
The signal acquisition circuit includes：Mutual inductor, it is white connect elbow socket, rectifier bridge U2, rectifier bridge U4, rectifier bridge U7,
Rectifier bridge U8, resistance R8, resistance R24, resistance R36, resistance R60, resistance R5, resistance R21, resistance R27, resistance R57；Bai Lian is curved
Connector J1 is provided with interface 1 to interface 8；
Interface 1 of 1 both ends of interface of J1 respectively with mutual inductor A+ phases, rectifier bridge U2 is connected, 2 both ends of interface of J1 respectively with
Mutual inductor A- phases, the interface 2 of rectifier bridge U2 connect, 3 both ends of interface of J1 respectively with mutual inductor B+ phases, the interface 1 of rectifier bridge U4
Connection, 4 both ends of interface of J1 are connected respectively with mutual inductor B- phases, rectifier bridge U4 interfaces 2,5 both ends of interface of J1 respectively with mutual inductance
Device C+ phases, rectifier bridge U7 interfaces 1 connect, and 6 both ends of interface of J1 are connected respectively with mutual inductor C- phases, rectifier bridge U7 interfaces 2, J1's
7 both ends of interface are connected respectively with mutual inductor N+ phases, rectifier bridge U8 interfaces 1,8 both ends of interface of J1 respectively with mutual inductor N- phases, whole
Stream bridge U8 interfaces 2 connect；
Rectifier bridge U2 interfaces 4 are connected respectively with R8 one end port, R5 one end port, and R8 other ends port is connected to ground；It is whole
Stream bridge U4 interfaces 4 are connected respectively with R24 one end port, R21 one end port, and R24 other ends port is connected to ground；Rectifier bridge U7 connects
Mouth 4 is connected respectively with R36 one end port, R27 one end port, and R36 other ends port is connected to ground；Rectifier bridge U8 interfaces 4 are distinguished
It is connected with R60 one end port, R57 one end port, R60 other ends port is connected to ground.
The signal conditioning circuit includes：Resistance R5, resistance R21, resistance R27, resistance R57, capacitance C11, capacitance C21,
Capacitance C24, capacitance C27, resistance R6, resistance R22, resistance R28, resistance R58, resistance R1, resistance R18, resistance R26, resistance
R56, four-operational amplifier U6, capacitance C12, capacitance C22, capacitance C25, capacitance C28, resistance R7, resistance R23, resistance R29, electricity
Resistance R59, microcontroller U9 four-operational amplifiers U6 are provided with interface 1 to interface 14；
The interface 1 of U6 is connected with resistance R1 one end port, capacitance C12 one end port, resistance R7 one end port, capacitance C12
Other end port is connected to ground, and resistance R7 other ends port is connected with microcontroller U9 interfaces P1.6；
The interface 2 of U6 is connected with resistance R6 another port, R1 another port, and the interface 3 of U6 is connected to ground, the interface 4 of U6
It is connected with+5V power supplys, the interface 5 of U6 is connected to ground, and the interface 6 of U6 is connected with resistance R22 another port, R18 one end port, U6
Interface 7 be connected with resistance R18 other ends port, capacitance C22 one end port, resistance R23 one end port, the capacitance C22 other ends
Port is connected to ground, and resistance R23 other ends port is connected with microcontroller U9 interfaces P1.5, interface 8 and the resistance R26 one end end of U6
Mouth, capacitance C25 one end port, the connection of resistance R29 one end port, capacitance C25 other ends port are connected to ground, and resistance R29 is another
End port is connected with microcontroller U9 interfaces P1.4, and the interface 9 of U6 is connected with resistance R28 another port, R26 another port,
Interface 10, interface 11, the interface 12 of U6 is grounded, interface 13 and R58 other ends port, the R56 one end port of U6
Connection, the interface 14 of U6 are connected with resistance R56 other ends port, capacitance C28 one end port, resistance R59 one end port, capacitance
C28 other ends port is connected to ground, and resistance R59 other ends port is connected with microcontroller U9 interfaces P1.3.
The rectification circuit includes rectifier bridge U2, rectifier bridge U4, rectifier bridge U7, rectifier bridge U8, transition diode D3, rectification
It is diode D1, MOS power tube V2, resistance R14, resistance R11, resistance R13, resistance R15, resistance R4, resistance R2, resistance R3, steady
Press diode D7, capacitance C15, dual operational amplifier U5, capacitance C2, capacitance C3, rectifier diode D5, rectifier diode D2；MOS
Power tube V2 drain Ds and rectifier bridge U2 interfaces 3, rectifier bridge U4 interfaces 3, rectifier bridge U7 interfaces 3, rectifier bridge U8 interfaces 3, transition two
Pole pipe D3 one end port, the connection of rectifier diode D1 anodes, transition diode D3 other ends port is connected to ground；Grid G and electricity
R14 one end port, the connection of R11 one end port are hindered, R14 other ends port is connected to ground, R11 other ends port and R13 one end end
Mouth connection；Source S is connected to ground；
Dual operational amplifier U5, which is provided with, is interfaced to interface 8；
The interface 4 of U5 is connected to ground；The interface 5 of U5 and resistance R13 other ends port, resistance R4 one end port, resistance R15
One end port connects, and resistance R15 other ends port is connected to ground；The interface 6 of U5 and capacitance C15 one end port, resistance R2 one end
Port, the connection of zener diode D7 cathode, capacitance C15 other ends port are connected to ground, and zener diode D7 anodes are connected to ground,
The interface 7 of U5 is connected with resistance R11 other ends port, resistance R13 one end port, resistance R3 one end port, interface 8 and the electricity of U5
Hinder R3 other ends port, resistance R2 other ends port, resistance R4 other ends port, rectifier diode D1 cathode, capacitance C2 one end
Port, capacitance C3 one end port, rectifier diode D5 anodes, rectifier diode D2 anodes connection, capacitance C2 other ends port with
Ground connects, and capacitance C3 other ends port is connected to ground.
The regulator circuit includes：Rectifier diode D2, electrolytic capacitor C4, capacitance C5, three terminal regulator U1, two pole of transition
Pipe D4, tantalum capacitance C6, capacitance C7；Three terminal regulator is provided with interface 1, interface 2 and interface 3；The interface 1 of three terminal regulator and wink
Become diode D4 one end port, tantalum capacitance C6 anodes, the connection of capacitance C7 one end port, transition diode other end port connects with ground
It connects, tantalum capacitance cathode is connected to ground, and capacitance C7 other ends port is connected to ground；The interface 2 of three terminal regulator is connected to ground；Three ends
The interface 3 of voltage-stablizer is connected with rectifier diode D2 cathode, electrolytic capacitor C4 anodes, capacitance C5 one end port, electrolytic capacitor C4
It is connected to ground, capacitance C5 is connected to ground.
The trip circuit, which includes rectifier diode D5, rectifier diode D6, triode V4, rectifier diode D13, magnetic, to be pushed away
Delivery outlet J2, tripping row's pin mouth J3, capacitance C17, resistance R20, resistance R19, triode V1, resistance R12, resistance R10, Bai Lianli
Formula socket J5 magnetic pushes away delivery outlet J2 and is provided with interface 1, interface 2, the interface 1 of J2 and rectifier diode D6 anodes, triode V4 collection
Electrode C connections, the interface 2 of J2 are connected with rectifier diode D5 cathode, rectifier diode D6 cathode, and tripping row pin mouth J3 is provided with
Interface 1, interface 2, the interface 1 of J3 are connected with rectifier diode D13 anodes, and rectifier diode D13 cathode push away delivery outlet J2 with magnetic
Interface 2 connects, and interface 2 and the magnetic of J3 push away delivery outlet J2 interfaces 1 and is connected；
Triode V4 emitter Es are connected to ground, base stage B and capacitance C17 one end port, resistance R20 one end port, resistance
R19 one end port connects, and capacitance C17 other ends port is connected to ground, and resistance R20 other ends port is connected to ground；
Triode V1 emitter Es are connected with+5V power supplys, resistance R10 one end port;Base stage B connects with resistance R12 one end port
It connects, resistance R12 other ends port is connected with resistance R10 other ends port, microcontroller U9 interfaces P6.5；Collector C and resistance R19
Other end port connects vertical socket J5 interfaces P2 connections in vain.
The clock circuit and crystal oscillating circuit include clock controller, and the clock controller is for model
The microcontroller U9 of STC15W4K32S4；The reset circuit is including microcontroller U9, microcontroller U9 interfaces VCC and tantalum capacitance C30 just
Pole, capacitance C31 one end port, the connection of capacitance C32 one end port ,+5V voltage sources, clock controller interface microcontroller GND and tantalum
Capacitance C30 anodes, capacitance C31 other ends port, capacitance C32 other ends port, connect.
The knob control circuit includes：Rotary coded switch K1, rotary coded switch K2, rotary coded switch K3, rotary coded switch K4, rotation code
Switch K5, rotary coded switch K6；All rotary coded switches are both provided with interface 1, interface 2, interface 4, interface 8, interface C；
Rotary coded switch K1 interfaces 1 are connected with microcontroller U9 interfaces P6.0, and the interface 2 and microcontroller U9 interfaces P6.1 of K1 connects
It connects, the interface 4 of K1 is connected with microcontroller U9 interfaces P6.2, and the interface 8 of K1 is connected with microcontroller U9 interfaces P6.3, the interface C of K1
It is connected to ground；
Rotary coded switch K2 interfaces 1 are connected with microcontroller U9 interfaces P0.0, and K2 interfaces 2 are connected with microcontroller U9 interfaces P0.1,
K2 interfaces 4 are connected with microcontroller U9 interfaces P0.2, and K2 interfaces 8 are connected with microcontroller U9 interfaces P0.3, and K2 interfaces C is connected to ground；
Rotary coded switch K3 interfaces 1 are connected with microcontroller U9 interfaces P0.4, and K3 interfaces 2 are connected with microcontroller U9 interfaces P0.5,
K3 interfaces 4 are connected with microcontroller U9 interfaces P0.6, and K3 interfaces 8 are connected with microcontroller U9 interfaces P0.7, and K3 interfaces C is connected to ground；
Rotary coded switch K4 interfaces 1 are connected with microcontroller U9 interfaces P7.0, and K4 interfaces 2 are connected with microcontroller U9 interfaces P7.1,
K4 interfaces 4 are connected with microcontroller U9 interfaces P7.2, and K4 interfaces 8 are connected with microcontroller U9 interfaces P7.3, and K4 interfaces C is connected to ground；
Rotary coded switch K5 interfaces 1 are connected with microcontroller U9 interfaces P7.4, and K5 interfaces 2 are connected with microcontroller U9 interfaces P7.5,
K5 interfaces 4 are connected with microcontroller U9 interfaces P7.6, and K5 interfaces 8 are connected with microcontroller U9 interfaces P7.7, and K5 interfaces C is connected to ground；
Rotary coded switch K6 interfaces 1 are connected with microcontroller U9 interfaces P2.0, and K6 interfaces 2 are connected with microcontroller U9 interfaces P2.1,
K6 interfaces 4 are connected with microcontroller U9 interfaces P2.2, and K6 interfaces 8 are connected with microcontroller U9 interfaces P2.3, and K6 interfaces C is connected to ground.
The RS485 telecommunication circuits include：Resistance R64, resistance R65, triode V5, resistance R69, capacitance C29, A/D turn
Parallel operation U10, resistance R62, resistance R67, resistance R63, resistance R66, transition diode D8, STC program download interface J4, Bai Lianli
Formula socket J5；
A/D converter U10 is provided with interface 1 to interface 8；U10 interfaces 1 are connected with resistance R64 one end port, resistance R64
Other end port is connected with STC program download interface J4 interfaces 4；U10 interfaces 2 and triode V5 collectors C, resistance R69 one end
Port connects, and resistance R69 other ends port is connected to ground；U10 interfaces 3 and triode V5 collectors C, resistance R69 one end port
Connection；U10 interfaces 4 are connected to ground；U10 interfaces 5 and resistance R67 one end port, be connected；U10 interfaces 6 and transition diode one
Port, resistance R62 one end port, the connection of resistance R63 one end port are held, resistance R63 other ends port connects with connecting vertical socket in vain
Mouth 3 connects；U10 interfaces 7 are connected with transition diode other end port, resistance R67 other ends port, resistance R66 one end port,
Resistance R66 other ends port is connected with connecting vertical socket interface 4 in vain；U10 interfaces 8 and resistance R62 other ends port, capacitance C29
One end port, the connection of+5V voltage sources, capacitance C29 other ends port is connected to ground；
Triode V5 emitter Es are connected with+5V voltage sources, and base stage B is connected with resistance R65 one end port, and resistance R65 is another
End port is connected with STC program download interface J4 interfaces 2；
STC program download interfaces J4 is provided with interface 1 to interface 5；J4 interfaces 1 are connected to ground；J4 interfaces 3 and+5V voltages
Source connects；J4 interfaces 5 are connected to ground；
Connect vertical socket J5 interfaces 1 to interface 8 in vain；J5 interfaces 7 are connected with resistance R71 one end port, the resistance R71 other ends
Port is connected to ground with+5V voltage sources；J5 interfaces 8 are connected to ground.
The utility model has stronger antijamming capability using the above structure, compared to the defencive function of conventional circuit breaker,
Relatively stable actuation time, it ensure that breaker actuation is efficient in time, improve the operational paradigm of electric power system；It improves simultaneously
Protection precision enhances the overload capacity of breaker, ensure that Electrical Safety.
Description of the drawings：
Fig. 1 is the structure diagram of the utility model.
Fig. 2 is the circuit diagram of the signal acquisition circuit of the utility model.
Fig. 3 is the circuit diagram of the signal conditioning circuit of the utility model.
Fig. 4 is the circuit diagram of the rectification circuit of the utility model.
Fig. 5 is the circuit diagram of the regulator circuit of the utility model.
Fig. 6 is the circuit diagram of the reset circuit of the utility model.
Specific embodiment：
In order to clarify the technical characteristics of the invention, below by specific embodiment, and its attached drawing is combined, to this reality
It is described in detail with new.
As shown in figures 1 to 6, a kind of breaker of plastic casing controller, including central processing unit, current sampling circuit, signal amplification
Circuit, ADC conversion circuits, TTL conversion circuits, RS485 communicating circuits, power amplification circuit, BJ signal input modules, HZ signals
Output module, FZ signal output modules, dropout output circuit, working state circuit, power supply circuit, central processing unit peripheral circuit
With function setting module；The current sampling circuit is connected by signal amplification circuit with the input terminal of ADC conversion circuits, ADC
The output terminal of conversion circuit is connected with the current signal input of central processing unit, BJ signal input modules, HZ signal output moulds
Block, FZ signal output modules are connected with central processing unit, the signal communication section of central processing unit by TTL conversion circuits with
RS485 communicating circuits are connected, and the dropout control terminal of central processing unit is connected by power amplification circuit with dropout output circuit, in
The display end of centre controller is connected with working state circuit, and power supply circuit is powered to central controller and peripheral circuit, center control
The function setting end of device processed is connected with function setting module；
The current sampling circuit includes signal acquisition circuit, signal conditioning circuit, rectification circuit and regulator circuit, described
Signal acquisition circuit, signal conditioning circuit, rectification circuit and regulator circuit are sequentially connected；The central processing unit peripheral circuit bag
Include clock circuit, crystal oscillating circuit, reset circuit, knob control circuit and EPROM storage circuits, the clock circuit, crystal oscillator electricity
Road, reset circuit, knob control circuit and EPROM storage circuits are connected respectively at central controller.
The current signal in use, in obtaining power grid by current sampling circuit is being carried out, electricity is then amplified by signal
Current signal is sent to central processing unit by road, and current current conditions are judged by central processing unit, if there is overload or short
During the situation on road, central processing unit control dropout output circuit, which performs to thread off, to be disconnected, and is played a protective role.
The signal acquisition circuit includes：Mutual inductor, it is white connect elbow socket, rectifier bridge U2, rectifier bridge U4, rectifier bridge U7,
Rectifier bridge U8, resistance R8, resistance R24, resistance R36, resistance R60, resistance R5, resistance R21, resistance R27, resistance R57；Bai Lian is curved
Connector J1 is provided with interface 1 to interface 8；
Interface 1 of 1 both ends of interface of J1 respectively with mutual inductor A+ phases, rectifier bridge U2 is connected, 2 both ends of interface of J1 respectively with
Mutual inductor A- phases, the interface 2 of rectifier bridge U2 connect, 3 both ends of interface of J1 respectively with mutual inductor B+ phases, the interface 1 of rectifier bridge U4
Connection, 4 both ends of interface of J1 are connected respectively with mutual inductor B- phases, rectifier bridge U4 interfaces 2,5 both ends of interface of J1 respectively with mutual inductance
Device C+ phases, rectifier bridge U7 interfaces 1 connect, and 6 both ends of interface of J1 are connected respectively with mutual inductor C- phases, rectifier bridge U7 interfaces 2, J1's
7 both ends of interface are connected respectively with mutual inductor N+ phases, rectifier bridge U8 interfaces 1,8 both ends of interface of J1 respectively with mutual inductor N- phases, whole
Stream bridge U8 interfaces 2 connect；
Rectifier bridge U2 interfaces 4 are connected respectively with R8 one end port, R5 one end port, and R8 other ends port is connected to ground；It is whole
Stream bridge U4 interfaces 4 are connected respectively with R24 one end port, R21 one end port, and R24 other ends port is connected to ground；Rectifier bridge U7 connects
Mouth 4 is connected respectively with R36 one end port, R27 one end port, and R36 other ends port is connected to ground；Rectifier bridge U8 interfaces 4 are distinguished
It is connected with R60 one end port, R57 one end port, R60 other ends port is connected to ground.
Signal acquisition circuit is used to gather the electric current in power grid, and collection result is precise and stable.
The signal conditioning circuit includes：Resistance R5, resistance R21, resistance R27, resistance R57, capacitance C11, capacitance C21,
Capacitance C24, capacitance C27, resistance R6, resistance R22, resistance R28, resistance R58, resistance R1, resistance R18, resistance R26, resistance
R56, four-operational amplifier U6, capacitance C12, capacitance C22, capacitance C25, capacitance C28, resistance R7, resistance R23, resistance R29, electricity
Resistance R59, microcontroller U9 four-operational amplifiers U6 are provided with interface 1 to interface 14；
The interface 1 of U6 is connected with resistance R1 one end port, capacitance C12 one end port, resistance R7 one end port, capacitance C12
Other end port is connected to ground, and resistance R7 other ends port is connected with microcontroller U9 interfaces P1.6；
The interface 2 of U6 is connected with resistance R6 another port, R1 another port, and the interface 3 of U6 is connected to ground, the interface 4 of U6
It is connected with+5V power supplys, the interface 5 of U6 is connected to ground, and the interface 6 of U6 is connected with resistance R22 another port, R18 one end port, U6
Interface 7 be connected with resistance R18 other ends port, capacitance C22 one end port, resistance R23 one end port, the capacitance C22 other ends
Port is connected to ground, and resistance R23 other ends port is connected with microcontroller U9 interfaces P1.5, interface 8 and the resistance R26 one end end of U6
Mouth, capacitance C25 one end port, the connection of resistance R29 one end port, capacitance C25 other ends port are connected to ground, and resistance R29 is another
End port is connected with microcontroller U9 interfaces P1.4, and the interface 9 of U6 is connected with resistance R28 another port, R26 another port,
Interface 10, interface 11, the interface 12 of U6 is grounded, interface 13 and R58 other ends port, the R56 one end port of U6
Connection, the interface 14 of U6 are connected with resistance R56 other ends port, capacitance C28 one end port, resistance R59 one end port, capacitance
C28 other ends port is connected to ground, and resistance R59 other ends port is connected with microcontroller U9 interfaces P1.3.
Signal conditioning circuit has amplification, current signal can be nursed one's health, so that central processing unit is connect
It receives.
The rectification circuit includes rectifier bridge U2, rectifier bridge U4, rectifier bridge U7, rectifier bridge U8, transition diode D3, rectification
It is diode D1, MOS power tube V2, resistance R14, resistance R11, resistance R13, resistance R15, resistance R4, resistance R2, resistance R3, steady
Press diode D7, capacitance C15, dual operational amplifier U5, capacitance C2, capacitance C3, rectifier diode D5, rectifier diode D2；MOS
Power tube V2 drain Ds and rectifier bridge U2 interfaces 3, rectifier bridge U4 interfaces 3, rectifier bridge U7 interfaces 3, rectifier bridge U8 interfaces 3, transition two
Pole pipe D3 one end port, the connection of rectifier diode D1 anodes, transition diode D3 other ends port is connected to ground；Grid G and electricity
R14 one end port, the connection of R11 one end port are hindered, R14 other ends port is connected to ground, R11 other ends port and R13 one end end
Mouth connection；Source S is connected to ground；
Dual operational amplifier U5, which is provided with, is interfaced to interface 8；
The interface 4 of U5 is connected to ground；The interface 5 of U5 and resistance R13 other ends port, resistance R4 one end port, resistance R15
One end port connects, and resistance R15 other ends port is connected to ground；The interface 6 of U5 and capacitance C15 one end port, resistance R2 one end
Port, the connection of zener diode D7 cathode, capacitance C15 other ends port are connected to ground, and zener diode D7 anodes are connected to ground,
The interface 7 of U5 is connected with resistance R11 other ends port, resistance R13 one end port, resistance R3 one end port, interface 8 and the electricity of U5
Hinder R3 other ends port, resistance R2 other ends port, resistance R4 other ends port, rectifier diode D1 cathode, capacitance C2 one end
Port, capacitance C3 one end port, rectifier diode D5 anodes, rectifier diode D2 anodes connection, capacitance C2 other ends port with
Ground connects, and capacitance C3 other ends port is connected to ground.
The regulator circuit includes：Rectifier diode D2, electrolytic capacitor C4, capacitance C5, three terminal regulator U1, two pole of transition
Pipe D4, tantalum capacitance C6, capacitance C7；Three terminal regulator is provided with interface 1, interface 2 and interface 3；The interface 1 of three terminal regulator and wink
Become diode D4 one end port, tantalum capacitance C6 anodes, the connection of capacitance C7 one end port, transition diode other end port connects with ground
It connects, tantalum capacitance cathode is connected to ground, and capacitance C7 other ends port is connected to ground；The interface 2 of three terminal regulator is connected to ground；Three ends
The interface 3 of voltage-stablizer is connected with rectifier diode D2 cathode, electrolytic capacitor C4 anodes, capacitance C5 one end port, electrolytic capacitor C4
It is connected to ground, capacitance C5 is connected to ground.
The trip circuit, which includes rectifier diode D5, rectifier diode D6, triode V4, rectifier diode D13, magnetic, to be pushed away
Delivery outlet J2, tripping row's pin mouth J3, capacitance C17, resistance R20, resistance R19, triode V1, resistance R12, resistance R10, Bai Lianli
Formula socket J5 magnetic pushes away delivery outlet J2 and is provided with interface 1, interface 2, the interface 1 of J2 and rectifier diode D6 anodes, triode V4 collection
Electrode C connections, the interface 2 of J2 are connected with rectifier diode D5 cathode, rectifier diode D6 cathode, and tripping row pin mouth J3 is provided with
Interface 1, interface 2, the interface 1 of J3 are connected with rectifier diode D13 anodes, and rectifier diode D13 cathode push away delivery outlet J2 with magnetic
Interface 2 connects, and interface 2 and the magnetic of J3 push away delivery outlet J2 interfaces 1 and is connected；
Triode V4 emitter Es are connected to ground, base stage B and capacitance C17 one end port, resistance R20 one end port, resistance
R19 one end port connects, and capacitance C17 other ends port is connected to ground, and resistance R20 other ends port is connected to ground；
Triode V1 emitter Es are connected with+5V power supplys, resistance R10 one end port;Base stage B connects with resistance R12 one end port
It connects, resistance R12 other ends port is connected with resistance R10 other ends port, microcontroller U9 interfaces P6.5；Collector C and resistance R19
Other end port connects vertical socket J5 interfaces P2 connections in vain.
The clock circuit and crystal oscillating circuit include clock controller, and the clock controller is for model
The microcontroller U9 of STC15W4K32S4；The reset circuit is including microcontroller U9, microcontroller U9 interfaces VCC and tantalum capacitance C30 just
Pole, capacitance C31 one end port, the connection of capacitance C32 one end port ,+5V voltage sources, clock controller interface microcontroller GND and tantalum
Capacitance C30 anodes, capacitance C31 other ends port, capacitance C32 other ends port, connect.
The knob control circuit includes：Rotary coded switch K1, rotary coded switch K2, rotary coded switch K3, rotary coded switch K4, rotation code
Switch K5, rotary coded switch K6；All rotary coded switches are both provided with interface 1, interface 2, interface 4, interface 8, interface C；
Rotary coded switch K1 interfaces 1 are connected with microcontroller U9 interfaces P6.0, and the interface 2 and microcontroller U9 interfaces P6.1 of K1 connects
It connects, the interface 4 of K1 is connected with microcontroller U9 interfaces P6.2, and the interface 8 of K1 is connected with microcontroller U9 interfaces P6.3, the interface C of K1
It is connected to ground；
Rotary coded switch K2 interfaces 1 are connected with microcontroller U9 interfaces P0.0, and K2 interfaces 2 are connected with microcontroller U9 interfaces P0.1,
K2 interfaces 4 are connected with microcontroller U9 interfaces P0.2, and K2 interfaces 8 are connected with microcontroller U9 interfaces P0.3, and K2 interfaces C is connected to ground；
Rotary coded switch K3 interfaces 1 are connected with microcontroller U9 interfaces P0.4, and K3 interfaces 2 are connected with microcontroller U9 interfaces P0.5,
K3 interfaces 4 are connected with microcontroller U9 interfaces P0.6, and K3 interfaces 8 are connected with microcontroller U9 interfaces P0.7, and K3 interfaces C is connected to ground；
Rotary coded switch K4 interfaces 1 are connected with microcontroller U9 interfaces P7.0, and K4 interfaces 2 are connected with microcontroller U9 interfaces P7.1,
K4 interfaces 4 are connected with microcontroller U9 interfaces P7.2, and K4 interfaces 8 are connected with microcontroller U9 interfaces P7.3, and K4 interfaces C is connected to ground；
Rotary coded switch K5 interfaces 1 are connected with microcontroller U9 interfaces P7.4, and K5 interfaces 2 are connected with microcontroller U9 interfaces P7.5,
K5 interfaces 4 are connected with microcontroller U9 interfaces P7.6, and K5 interfaces 8 are connected with microcontroller U9 interfaces P7.7, and K5 interfaces C is connected to ground；
Rotary coded switch K6 interfaces 1 are connected with microcontroller U9 interfaces P2.0, and K6 interfaces 2 are connected with microcontroller U9 interfaces P2.1,
K6 interfaces 4 are connected with microcontroller U9 interfaces P2.2, and K6 interfaces 8 are connected with microcontroller U9 interfaces P2.3, and K6 interfaces C is connected to ground.
The RS485 telecommunication circuits include：Resistance R64, resistance R65, triode V5, resistance R69, capacitance C29, A/D turn
Parallel operation U10, resistance R62, resistance R67, resistance R63, resistance R66, transition diode D8, STC program download interface J4, Bai Lianli
Formula socket J5；
A/D converter U10 is provided with interface 1 to interface 8；U10 interfaces 1 are connected with resistance R64 one end port, resistance R64
Other end port is connected with STC program download interface J4 interfaces 4；U10 interfaces 2 and triode V5 collectors C, resistance R69 one end
Port connects, and resistance R69 other ends port is connected to ground；U10 interfaces 3 and triode V5 collectors C, resistance R69 one end port
Connection；U10 interfaces 4 are connected to ground；U10 interfaces 5 and resistance R67 one end port, be connected；U10 interfaces 6 and transition diode one
Port, resistance R62 one end port, the connection of resistance R63 one end port are held, resistance R63 other ends port connects with connecting vertical socket in vain
Mouth 3 connects；U10 interfaces 7 are connected with transition diode other end port, resistance R67 other ends port, resistance R66 one end port,
Resistance R66 other ends port is connected with connecting vertical socket interface 4 in vain；U10 interfaces 8 and resistance R62 other ends port, capacitance C29
One end port, the connection of+5V voltage sources, capacitance C29 other ends port is connected to ground；
Triode V5 emitter Es are connected with+5V voltage sources, and base stage B is connected with resistance R65 one end port, and resistance R65 is another
End port is connected with STC program download interface J4 interfaces 2；
STC program download interfaces J4 is provided with interface 1 to interface 5；J4 interfaces 1 are connected to ground；J4 interfaces 3 and+5V voltages
Source connects；J4 interfaces 5 are connected to ground；
Connect vertical socket J5 interfaces 1 to interface 8 in vain；J5 interfaces 7 are connected with resistance R71 one end port, the resistance R71 other ends
Port is connected to ground with+5V voltage sources；J5 interfaces 8 are connected to ground.
The breaker of the utility model enhances the overload capacity of breaker, ensure that Electrical Safety.
Above-mentioned specific embodiment cannot function as the limitation to scope of protection of the utility model, for the skill of the art
For art personnel, any alternate modification or conversion made to the utility model embodiment all fall within the guarantor of the utility model
In the range of shield.
Part is not described in detail for the utility model, is the known technology of those skilled in the art of the present technique.
Claims (9)
1. a kind of breaker of plastic casing controller, it is characterised in that：Including central processing unit, current sampling circuit, signal amplification electricity
Road, ADC conversion circuits, TTL conversion circuits, RS485 communicating circuits, power amplification circuit, BJ signal input modules, HZ signals are defeated
Go out module, FZ signal output modules, dropout output circuit, working state circuit, power supply circuit, central processing unit peripheral circuit and
Function setting module；The current sampling circuit is connected by signal amplification circuit with the input terminal of ADC conversion circuits, and ADC turns
The output terminal of circuit is changed with the current signal input of central processing unit to be connected, BJ signal input modules, HZ signal output modules,
FZ signal output modules are connected with central processing unit, and the signal communication section of central processing unit passes through TTL conversion circuits and RS485
Communicating circuit is connected, and the dropout control terminal of central processing unit is connected by power amplification circuit with dropout output circuit, center control
The display end of device processed is connected with working state circuit, and power supply circuit is powered to central controller and peripheral circuit, central controller
Function setting end be connected with function setting module；
The current sampling circuit includes signal acquisition circuit, signal conditioning circuit, rectification circuit and regulator circuit, the signal
Acquisition Circuit, signal conditioning circuit, rectification circuit and regulator circuit are sequentially connected；When the central processing unit peripheral circuit includes
Clock circuit, crystal oscillating circuit, reset circuit, knob control circuit and EPROM storage circuits, the clock circuit, crystal oscillating circuit are answered
Position circuit, knob control circuit are connected with EPROM storage circuits respectively at central controller.
2. a kind of breaker of plastic casing controller according to claim 1, it is characterised in that：The signal acquisition circuit bag
It includes：Mutual inductor connects elbow socket, rectifier bridge U2, rectifier bridge U4, rectifier bridge U7, rectifier bridge U8, resistance R8, resistance R24, electricity in vain
Hinder R36, resistance R60, resistance R5, resistance R21, resistance R27, resistance R57；Connecting elbow socket J1 is provided with interface 1 to interface in vain
8；
Interface 1 of 1 both ends of interface of J1 respectively with mutual inductor A+ phases, rectifier bridge U2 is connected, 2 both ends of interface of J1 respectively with mutual inductance
Device A- phases, the interface 2 of rectifier bridge U2 connect, and the interface 1 of 3 both ends of interface of J1 respectively with mutual inductor B+ phases, rectifier bridge U4 is connected,
4 both ends of interface of J1 are connected respectively with mutual inductor B- phases, rectifier bridge U4 interfaces 2,5 both ends of interface of J1 respectively with mutual inductor C+
Phase, rectifier bridge U7 interfaces 1 connect, and 6 both ends of interface of J1 are connected respectively with mutual inductor C- phases, rectifier bridge U7 interfaces 2, the interface of J1
7 both ends are connected respectively with mutual inductor N+ phases, rectifier bridge U8 interfaces 1,8 both ends of interface of J1 respectively with mutual inductor N- phases, rectifier bridge
U8 interfaces 2 connect；
Rectifier bridge U2 interfaces 4 are connected respectively with R8 one end port, R5 one end port, and R8 other ends port is connected to ground；Rectifier bridge
U4 interfaces 4 are connected respectively with R24 one end port, R21 one end port, and R24 other ends port is connected to ground；Rectifier bridge U7 interfaces 4
It is connected respectively with R36 one end port, R27 one end port, R36 other ends port is connected to ground；Rectifier bridge U8 interfaces 4 respectively with
R60 one end port, the connection of R57 one end port, R60 other ends port is connected to ground.
3. a kind of breaker of plastic casing controller according to claim 1, it is characterised in that：The signal conditioning circuit bag
It includes：Resistance R5, resistance R21, resistance R27, resistance R57, capacitance C11, capacitance C21, capacitance C24, capacitance C27, resistance R6, resistance
R22, resistance R28, resistance R58, resistance R1, resistance R18, resistance R26, resistance R56, four-operational amplifier U6, capacitance C12, electricity
Hold C22, capacitance C25, capacitance C28, resistance R7, resistance R23, resistance R29, resistance R59, microcontroller U9 four-operational amplifiers U6 to set
Interface 1 is equipped with to interface 14；
The interface 1 of U6 is connected with resistance R1 one end port, capacitance C12 one end port, resistance R7 one end port, and capacitance C12 is another
End port is connected to ground, and resistance R7 other ends port is connected with microcontroller U9 interfaces P1.6；
The interface 2 of U6 is connected with resistance R6 another port, R1 another port, and the interface 3 of U6 is connected to ground, the interface 4 and+5V of U6
Power supply connects, and the interface 5 of U6 is connected to ground, and the interface 6 of U6 is connected with resistance R22 another port, R18 one end port, and U6's connects
Mouth 7 is connected with resistance R18 other ends port, capacitance C22 one end port, resistance R23 one end port, capacitance C22 other ends port
It being connected to ground, resistance R23 other ends port is connected with microcontroller U9 interfaces P1.5, the interface 8 of U6 and resistance R26 one end port,
Capacitance C25 one end port, the connection of resistance R29 one end port, capacitance C25 other ends port are connected to ground, resistance R29 other ends end
Mouth is connected with microcontroller U9 interfaces P1.4, and the interface 9 of U6 is connected with resistance R28 another port, R26 another port,
Interface 10, interface 11, the interface 12 of U6 is grounded, and interface 13 and R58 other ends port, the R56 one end port of U6 connect
It connects, the interface 14 of U6 is connected with resistance R56 other ends port, capacitance C28 one end port, resistance R59 one end port, capacitance C28
Other end port is connected to ground, and resistance R59 other ends port is connected with microcontroller U9 interfaces P1.3.
4. a kind of breaker of plastic casing controller according to claim 1, it is characterised in that：The rectification circuit includes rectification
Bridge U2, rectifier bridge U4, rectifier bridge U7, rectifier bridge U8, transition diode D3, rectifier diode D1, MOS power tube V2, resistance
R14, resistance R11, resistance R13, resistance R15, resistance R4, resistance R2, resistance R3, zener diode D7, capacitance C15, double computings
Amplifier U5, capacitance C2, capacitance C3, rectifier diode D5, rectifier diode D2；MOS power tube V2 drain Ds connect with rectifier bridge U2
Mouth 3, rectifier bridge U4 interfaces 3, rectifier bridge U7 interfaces 3, rectifier bridge U8 interfaces 3, transition diode D3 one end port, rectifier diode
D1 anodes connect, and transition diode D3 other ends port is connected to ground；Grid G and resistance R14 one end port, R11 one end port
Connection, R14 other ends port are connected to ground, and R11 other ends port is connected with R13 one end port；Source S is connected to ground；
Dual operational amplifier U5, which is provided with, is interfaced to interface 8；
The interface 4 of U5 is connected to ground；The interface 5 of U5 and resistance R13 other ends port, resistance R4 one end port, resistance R15 one end
Port connects, and resistance R15 other ends port is connected to ground；The interface 6 of U5 and capacitance C15 one end port, resistance R2 one end port,
Zener diode D7 cathode connect, and capacitance C15 other ends port is connected to ground, and zener diode D7 anodes are connected to ground, U5's
Interface 7 is connected with resistance R11 other ends port, resistance R13 one end port, resistance R3 one end port, the interface 8 and resistance R3 of U5
Other end port, resistance R2 other ends port, resistance R4 other ends port, rectifier diode D1 cathode, capacitance C2 one end port,
Capacitance C3 one end port, rectifier diode D5 anodes, the connection of rectifier diode D2 anodes, capacitance C2 other ends port connects with ground
It connects, capacitance C3 other ends port is connected to ground.
5. a kind of breaker of plastic casing controller according to claim 1, it is characterised in that：The regulator circuit includes：It is whole
Flow diode D2, electrolytic capacitor C4, capacitance C5, three terminal regulator U1, transition diode D4, tantalum capacitance C6, capacitance C7；Three ends are steady
Depressor is provided with interface 1, interface 2 and interface 3；The interface 1 of three terminal regulator and transition diode D4 one end port, tantalum capacitance C6
Anode, the connection of capacitance C7 one end port, transition diode other end port are connected to ground, and tantalum capacitance cathode is connected to ground, capacitance
C7 other ends port is connected to ground；The interface 2 of three terminal regulator is connected to ground；The interface 3 and rectifier diode of three terminal regulator
D2 cathode, electrolytic capacitor C4 anodes, the connection of capacitance C5 one end port, electrolytic capacitor C4 are connected to ground, and capacitance C5 is connected to ground.
6. a kind of breaker of plastic casing controller according to claim 1, it is characterised in that：The dropout output circuit includes
Rectifier diode D5, rectifier diode D6, triode V4 rectifier diodes D13, magnetic push away delivery outlet J2, tripping row's pin mouth J3, electricity
Hold C17, resistance R20, resistance R19, triode V1, resistance R12, resistance R10, the white vertical socket J5 magnetic that connects and push away delivery outlet J2 settings
Have interface 1, interface 2, the interface 1 of J2 is connected with rectifier diode D6 anodes, triode V4 collectors C, the interface 2 of J2 with it is whole
Flow diode D5 cathode, the connection of rectifier diode D6 cathode, tripping row pin mouth J3 is provided with interface 1, interface 2, the interface 1 of J3 with
Rectifier diode D13 anodes connect, and rectifier diode D13 cathode push away delivery outlet J2 interfaces 2 with magnetic and are connected, the interface 2 and magnetic of J3
Delivery outlet J2 interfaces 1 are pushed away to connect；
Triode V4 emitter Es are connected to ground, base stage B and capacitance C17 one end port, resistance R20 one end port, resistance R19 mono-
Port connection is held, capacitance C17 other ends port is connected to ground, and resistance R20 other ends port is connected to ground；
Triode V1 emitter Es are connected with+5V power supplys, resistance R10 one end port;Base stage B is connected with resistance R12 one end port,
Resistance R12 other ends port is connected with resistance R10 other ends port, microcontroller U9 interfaces P6.5；Collector C and resistance R19 are another
One end port connects vertical socket J5 interfaces P2 connections in vain.
7. a kind of breaker of plastic casing controller according to claim 1, it is characterised in that：The clock circuit and crystal oscillator electricity
Road includes clock controller, and the clock controller is the microcontroller U9 that model is STC15W4K32S4；The reset circuit bag
Include microcontroller U9, microcontroller U9 interfaces VCC and tantalum capacitance C30 anode, capacitance C31 one end port, capacitance C32 one end port company
It connects ,+5V voltage sources, clock controller interface microcontroller GND and tantalum capacitance C30 anodes, capacitance C31 other ends port, capacitance C32
Other end port, connect.
8. a kind of breaker of plastic casing controller according to claim 1, it is characterised in that：The knob control circuit bag
It includes：Rotary coded switch K1, rotary coded switch K2, rotary coded switch K3, rotary coded switch K4, rotary coded switch K5, rotary coded switch K6；All rotation codes
Switch is both provided with interface 1, interface 2, interface 4, interface 8, interface C；
Rotary coded switch K1 interfaces 1 are connected with microcontroller U9 interfaces P6.0, and the interface 2 of K1 is connected with microcontroller U9 interfaces P6.1, K1
Interface 4 be connected with microcontroller U9 interfaces P6.2, the interface 8 of K1 is connected with microcontroller U9 interfaces P6.3, the interface C of K1 with ground even
It connects；
Rotary coded switch K2 interfaces 1 are connected with microcontroller U9 interfaces P0.0, and K2 interfaces 2 are connected with microcontroller U9 interfaces P0.1, and K2 connects
Mouth 4 is connected with microcontroller U9 interfaces P0.2, and K2 interfaces 8 are connected with microcontroller U9 interfaces P0.3, and K2 interfaces C is connected to ground；
Rotary coded switch K3 interfaces 1 are connected with microcontroller U9 interfaces P0.4, and K3 interfaces 2 are connected with microcontroller U9 interfaces P0.5, and K3 connects
Mouth 4 is connected with microcontroller U9 interfaces P0.6, and K3 interfaces 8 are connected with microcontroller U9 interfaces P0.7, and K3 interfaces C is connected to ground；
Rotary coded switch K4 interfaces 1 are connected with microcontroller U9 interfaces P7.0, and K4 interfaces 2 are connected with microcontroller U9 interfaces P7.1, and K4 connects
Mouth 4 is connected with microcontroller U9 interfaces P7.2, and K4 interfaces 8 are connected with microcontroller U9 interfaces P7.3, and K4 interfaces C is connected to ground；
Rotary coded switch K5 interfaces 1 are connected with microcontroller U9 interfaces P7.4, and K5 interfaces 2 are connected with microcontroller U9 interfaces P7.5, and K5 connects
Mouth 4 is connected with microcontroller U9 interfaces P7.6, and K5 interfaces 8 are connected with microcontroller U9 interfaces P7.7, and K5 interfaces C is connected to ground；
Rotary coded switch K6 interfaces 1 are connected with microcontroller U9 interfaces P2.0, and K6 interfaces 2 are connected with microcontroller U9 interfaces P2.1, and K6 connects
Mouth 4 is connected with microcontroller U9 interfaces P2.2, and K6 interfaces 8 are connected with microcontroller U9 interfaces P2.3, and K6 interfaces C is connected to ground.
9. a kind of breaker of plastic casing controller according to claim 1, it is characterised in that：The RS485 communicating circuits bag
It includes：Resistance R64, resistance R65, triode V5, resistance R69, capacitance C29, A/D converter U10, resistance R62, resistance R67, resistance
R63, resistance R66, transition diode D8, STC program download interface J4, vertical socket J5 is connected in vain；
A/D converter U10 is provided with interface 1 to interface 8；U10 interfaces 1 are connected with resistance R64 one end port, and resistance R64 is another
End port is connected with STC program download interface J4 interfaces 4；U10 interfaces 2 and triode V5 collectors C, resistance R69 one end port
Connection, resistance R69 other ends port is connected to ground；U10 interfaces 3 are connected with triode V5 collectors C, resistance R69 one end port；
U10 interfaces 4 are connected to ground；U10 interfaces 5 and resistance R67 one end port, be connected；U10 interfaces 6 and transition diode one end end
Mouth, resistance R62 one end port, the connection of resistance R63 one end port, resistance R63 other ends port connects with connecting vertical socket interface 3 in vain
It connects；U10 interfaces 7 are connected with transition diode other end port, resistance R67 other ends port, resistance R66 one end port, resistance
R66 other ends port is connected with connecting vertical socket interface 4 in vain；U10 interfaces 8 and resistance R62 other ends port, capacitance C29 one end
Port, the connection of+5V voltage sources, capacitance C29 other ends port is connected to ground；
Triode V5 emitter Es are connected with+5V voltage sources, and base stage B is connected with resistance R65 one end port, resistance R65 other ends end
Mouth is connected with STC program download interface J4 interfaces 2；
STC program download interfaces J4 is provided with interface 1 to interface 5；J4 interfaces 1 are connected to ground；J4 interfaces 3 connect with+5V voltage sources
It connects；J4 interfaces 5 are connected to ground；
Connect vertical socket J5 interfaces 1 to interface 8 in vain；J5 interfaces 7 are connected with resistance R71 one end port, resistance R71 other ends port
It is connected to ground with+5V voltage sources；J5 interfaces 8 are connected to ground.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721329836.1U CN207441619U (en) | 2017-10-17 | 2017-10-17 | A kind of breaker of plastic casing controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721329836.1U CN207441619U (en) | 2017-10-17 | 2017-10-17 | A kind of breaker of plastic casing controller |
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| Publication Number | Publication Date |
|---|---|
| CN207441619U true CN207441619U (en) | 2018-06-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721329836.1U Expired - Fee Related CN207441619U (en) | 2017-10-17 | 2017-10-17 | A kind of breaker of plastic casing controller |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110797236A (en) * | 2019-04-26 | 2020-02-14 | 深圳德微电技术有限公司 | Circuit breaker with fault self-checking function and self-power-off function |
-
2017
- 2017-10-17 CN CN201721329836.1U patent/CN207441619U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110797236A (en) * | 2019-04-26 | 2020-02-14 | 深圳德微电技术有限公司 | Circuit breaker with fault self-checking function and self-power-off function |
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