CN105895464A - Residual current circuit breaker having automatic closing function - Google Patents
Residual current circuit breaker having automatic closing function Download PDFInfo
- Publication number
- CN105895464A CN105895464A CN201610089160.7A CN201610089160A CN105895464A CN 105895464 A CN105895464 A CN 105895464A CN 201610089160 A CN201610089160 A CN 201610089160A CN 105895464 A CN105895464 A CN 105895464A
- Authority
- CN
- China
- Prior art keywords
- phase
- circuit
- control unit
- central control
- preset value
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/26—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents
- H02H3/32—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors
- H02H3/34—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors of a three-phase system
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/66—Power reset mechanisms
- H01H71/70—Power reset mechanisms actuated by electric motor
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/12—Automatic release mechanisms with or without manual release
- H01H71/42—Induction-motor, induced-current, or electrodynamic release mechanisms
- H01H71/43—Electrodynamic release mechanisms
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/12—Automatic release mechanisms with or without manual release
- H01H71/123—Automatic release mechanisms with or without manual release using a solid-state trip unit
Landscapes
- Emergency Protection Circuit Devices (AREA)
- Breakers (AREA)
Abstract
The invention relates to a residual current circuit breaker having an automatic closing function. The residual current circuit breaker comprises a housing and an electrical transmission mechanism. The electrical transmission mechanism comprises a stepper motor, an eccentric wheel and a transmission rod. A control circuit comprises a center control unit, an electric leakage detection sensor, a tripping drive circuit and the stepper motor. When the center control unit detects that the A phase, B phase or C phase power source has an abrupt change leakage current, and the abrupt change leakage current is larger than a first preset value, the center control unit controls a tripper to carry out tripping operation through the tripping drive circuit to cut off the power source; after 20-60 seconds, the center control unit controls the stepper motor to rotate through a drive circuit, and the stepper motor drives an operating handle of the tripper to operate through the eccentric wheel and the transmission rod, and enables the tripper to carry out closing operation so as to connect the power source; and when the A phase, B phase or C phase power source has a slowly-varying leakage current, and the slowly-varying leakage current is larger than a preset second preset value, the center control unit controls the tripper to carry out tripping operation to cut off the power source.
Description
The application is the division of patent application 201210262480X.
Technical field
The present invention relates to a kind of RCCB.
Background technology
Chinese patent literature notification number CN200941549Y discloses a kind of small motor protector; the current signal of motor major loop is converted into small-signal current by transformer; single-chip microcomputer is delivered to after signaling conversion circuit and signal conditioning circuit; single-chip microcomputer carries out electric leakage sampling, three-phase current sampling to it; and judge whether electric leakage, phase shortage, short circuit, stall, three-phase imbalance, overload successively; and then drive LED display module to show by display driver circuit, and cut off the input power of motor by output control circuit.Open also a kind of RCCB of Chinese patent literature publication number CN1622414A.
It is in place of above-mentioned the deficiencies in the prior art: inconvenience cannot be brought according to the gradual leakage current in power supply circuits and the situation automatic trip of sudden change leakage current and automatic closing to use.
Chinese patent literature notification number CN2496166Y disclose a kind of have gradual and sudden change two adjusting meanss earth leakage protective device; selected variable (gradual with sudden change) reference signal circuit that switch forms with at least three resistance variable with corresponding (gradual with suddenly change) comparator circuit to be connected by multidigit, separately constitute the gradual and device that can regulate respectively that suddenlys change.The program is disadvantageous in that: using analog circuit to realize gradual and sudden change leakage current monitoring, reliability is relatively low, and the program cannot realize the function of automatic trip and combined floodgate in conjunction with gradual and sudden change leakage current situation.
Chinese patent literature notification number CN2427915Y discloses a kind of monophase leakage protector, including performing circuit, leakaging signal detecting circuit, over-current signal testing circuit, gradual electric leakage signal output circuit, sudden change electric leakage signal output circuit, over-current signal integration output circuit, over-current signal amplification output circuit, automatic reset circuit, reset lockout circuit, test and display circuit etc..Its after earth leakage protective action can automatic reclosing once.The program is disadvantageous in that: using analog circuit to realize the gradual monitoring with sudden change leakage current and shutting-brake control, be easily disturbed, reliability is relatively low.
Summary of the invention
The technical problem to be solved is to provide a kind of RCCB that can realize automatic trip and automatic switching-in function according to the situation of the gradual leakage current in power supply circuits and sudden change leakage current.
The technical scheme solving above-mentioned technical problem is: a kind of RCCB with electric switch-on function, it is characterized in that including: inside is provided with the housing of electrical apparatus release and control circuit, housing is provided with for driving electrical apparatus release to perform the electronic conduction mechanism of feed motion, this electronic conduction mechanism includes that motor, eccentric and drive link, described eccentric are arranged on the output shaft of motor；Described electrical apparatus release includes the joystick stretched out from housing, and one end of drive link is rotationally connected with eccentric, and the other end is with operation handle strand even；Described control circuit includes: central control unit, for detecting the sensor for detecting electric leakage of the leakage current of A phase, B phase and C phase power supply, for providing the Transformer Rectifier mu balanced circuit of DC source, the dropout drive circuit being connected with the dropout control signal outfan of central control unit, the digital switch circuit being connected with the control signal input of central control unit, motor, and A phase, B phase and C phase current sensor；The amplified circuit of sensor for detecting electric leakage is connected with the detection of electrical leakage signal input part of central control unit, and the energization control signal outfan of central control unit is connected with the power end of motor through drive circuit；When central control unit is recorded by sensor for detecting electric leakage, A phase, B phase or C phase power supply exist sudden change leakage current, and this sudden change leakage current more than the first preset value time, central control unit controls electrical apparatus release through dropout drive circuit and performs trip action, to cut off the electricity supply；After the 20-60 second, central control unit controls motor through drive circuit and rotates, and motor drives the operation handle action of electrical apparatus release through eccentric and drive link, and makes electrical apparatus release perform feed motion to switch on power；Gradual leakage current is there is when central control unit is recorded in A phase, B phase or C phase power supply by sensor for detecting electric leakage, and this gradual leakage current more than the second preset value time, central control unit controls electrical apparatus release through dropout drive circuit and performs trip action, to cut off the electricity supply；After 3-10 minute, central control unit controls motor through drive circuit and rotates, and motor drives the operation handle action of electrical apparatus release through eccentric and drive link, and makes electrical apparatus release perform feed motion, to switch on power；If the most gradual leakage current is still above the second preset value, central control unit controls electrical apparatus release through dropout drive circuit and performs trip action, to cut off the electricity supply；A phase, B phase are connected with the power detecting end of central control unit through current stabilization circuit with C phase current sensor；When central control unit is recorded by A phase, B phase and C phase current sensor and there is overcurrent, short circuit current or phase shortage in A phase, B phase or C phase power supply, central control unit controls electrical apparatus release through dropout drive circuit and performs trip action, to cut off the electricity supply；
The model of central control unit is the single-chip microcomputer IC1 of PIC16F74；
Described digital switch circuit includes: the first switch K1, second switch K2, the 3rd switch K3 and the 4th switch K4 being connected with the 26th, 25,24 and 17 feet of single-chip microcomputer IC1 respectively；
At the 26th foot that the most described first switchs K1 Guan Bi and single-chip microcomputer IC1 during low level, described first preset value is 50mA, and the second preset value is 300mA；
At the 25th foot of the most described second switch K2 Guan Bi and single-chip microcomputer IC1 during low level, described first preset value is 75mA, and the second preset value is 500mA；
When the most described first switchs K1 and second switch K2 Guan Bi, described first preset value is 100mA, and the second preset value is 1000mA；
At the 26th and 24 feet that the most described first switchs K1 and the 3rd switch K3 Guan Bi and single-chip microcomputer IC1 during low level, described first preset value is 50mA, and the second preset value is 400mA；
When the most described second switch K2 and the 3rd switch K3 Guan Bi, described first preset value is 75mA, and the second preset value is 1000mA；
At the 17th foot that the described 4th switchs K4 Guan Bi and single-chip microcomputer IC1 during low level, described first preset value is infinitely great, i.e. closes sudden change leakage current detection function；
Described Transformer Rectifier mu balanced circuit includes: the transformator T1 being sequentially connected in series, the rectification circuit being made up of diode D1-D4 and the mu balanced circuit being made up of with stabilivolt D7 resistance R1；The secondary output end of transformator T1 is provided with lightning protection varistor R61；
Described dropout drive circuit includes: the on-off circuit that is connected with the dropout control signal outfan of central control unit, the 3rd relay X3 and perform the dropout of trip action for controlling electrical apparatus release and drive coil L；Described on-off circuit is located in the electric power loop of the 3rd relay X3, and the control output end of the 3rd relay X3 is located in the described current supply circuit driving coil L of threading off, and the 3rd relay X3 is used for controlling to thread off driving coil L to access between A phase firewire and zero line N；On-off circuit is made up of audion Q8, resistance R4 and diode D10；
Make described on-off circuit close when the dropout control signal outfan of central control unit exports high level, and when making the 3rd relay X3 obtain electric, the 3rd relay X3 controls described dropout and drives the current supply circuit conducting of coil L, and electrical apparatus release performs trip action；
The DC output end of the rectification circuit of described Transformer Rectifier mu balanced circuit is provided with the first relay X1, the outfan of the first relay X1 is located in the electric power loop of described 3rd relay X3, i.e. when the first relay X1 Guan Bi, 3rd relay X3 also closes, so that electrical apparatus release 10 performs trip action；First relay X1 Guan Bi or disconnection are by manually being controlled by digital switch K7.
The present invention has positive effect: in the RCCB of (1) present invention, after electrical apparatus release is threaded off automatically, after the default time period, and electronic conduction mechanism drives electrical apparatus release automatically to perform feed motion.In control circuit, central control unit detects A phase, B phase and the leakage current of C phase power supply through sensor for detecting electric leakage, with detection sudden change and gradual leakage current, and control electrical apparatus release execution trip action according to the size of sudden change and gradual leakage current, then make electrical apparatus release perform feed motion to switch on power according to the time interval preset by controlling motor, thus realize the action of automatic closing；In the RCCB of the present invention, using Based Intelligent Control element i.e. central control unit to complete Based Intelligent Control step, control road relative to traditional simulation, the RCCB of the present invention is difficult to the impact of interfered signal, and reliability is preferable, and structure is simpler.(2) in the control circuit of the present invention, central control unit is recorded by A phase, B phase and C phase current sensor when there is overcurrent, short circuit current or phase shortage in A phase, B phase or C phase power supply, central control unit controls electrical apparatus release through dropout drive circuit and performs trip action, to cut off the electricity supply.The RCCB of the present invention uses Based Intelligent Control element i.e. central control unit to complete Based Intelligent Control step, controls road relative to traditional simulation, and the RCCB of the present invention is difficult to the impact of interfered signal, and reliability is preferable, and structure is simpler.
Accompanying drawing explanation
Fig. 1 is the structure chart of the RCCB of the present invention；
Fig. 2 is the circuit block diagram of the RCCB of the present invention；
Fig. 3 is the circuit theory diagrams of the RCCB of the present invention.
Detailed description of the invention
(embodiment 1)
See Fig. 1, the RCCB of the present embodiment, including: inside is provided with the housing 2 of electrical apparatus release 10 and control circuit, housing 2 is provided with for driving electrical apparatus release 10 to perform the electronic conduction mechanism 3 of feed motion, this electronic conduction mechanism 3 includes motor 31, eccentric 32 and drive link 33, and described eccentric 32 is arranged on the output shaft of motor 31；Described electrical apparatus release 10 includes the joystick 10-1 stretched out from housing 2, and one end of drive link 33 is rotationally connected with eccentric 32, and the other end is with operation handle 10-1 strand even.
See Fig. 2-3, described control circuit includes: the central control unit 1 single-chip microcomputer IC1 of PIC16F74 (model be), for detecting A phase, the sensor for detecting electric leakage T2 of the leakage current of B phase and C phase power supply, for providing the Transformer Rectifier mu balanced circuit 4 of DC source, the dropout drive circuit 9 being connected with the dropout control signal outfan (the 34th foot of single-chip microcomputer IC1) of central control unit 1, control signal input (the 15th of single-chip microcomputer IC1 with central control unit 1, 16, 17, 24, 25 with 26 feet) the digital switch circuit 7 that is connected, motor 31, and A phase, B phase and C phase current sensor T3, T4 and T5；The amplified circuit of sensor for detecting electric leakage T2 3 is connected with the detection of electrical leakage signal input part (the 33rd foot of single-chip microcomputer IC1) of central control unit 1, and the energization control signal outfan (the 6th foot of single-chip microcomputer IC1) of central control unit 1 is connected through the power end of drive circuit 6 with motor 31.
When central control unit 1 is recorded by sensor for detecting electric leakage T2, A phase, B phase or C phase power supply exist sudden change leakage current, and this sudden change leakage current more than the first preset value time, central control unit 1 controls electrical apparatus release 10 through dropout drive circuit 9 and performs trip action, to cut off the electricity supply；After 30 seconds, central control unit 1 controls motor 31 through drive circuit 6 and rotates, motor 31 drives the operation handle 10-1 action of electrical apparatus release 10 through eccentric 32 and drive link 33, makes electrical apparatus release 10 perform feed motion and make described operation handle 10-1 be in closing position, is also turned on power supply.
Gradual leakage current is there is when central control unit 1 is recorded in A phase, B phase or C phase power supply by sensor for detecting electric leakage T2, and this gradual leakage current more than the second preset value time, central control unit 1 controls electrical apparatus release 10 through dropout drive circuit 9 and performs trip action, to cut off the electricity supply；After 5 minutes, central control unit 1 controls motor 31 through drive circuit 6 and rotates, and motor 31 drives the operation handle 10-1 action of electrical apparatus release 10 through eccentric 32 and drive link 33, and makes electrical apparatus release 10 perform feed motion, to switch on power；If the most gradual leakage current is still above the second preset value, central control unit 1 controls electrical apparatus release 10 through dropout drive circuit 9 and performs trip action, and makes described operation handle 10-1 be in trip positions, cuts off the electricity supply simultaneously.
Described A phase, B phase are connected with the power detecting end (the 2nd of single-chip microcomputer IC1 the, 3 and 4 foot) of central control unit 1 through current stabilization circuit 5 with T5 with C phase current sensor T3, T4；When central control unit 1 is recorded when wherein there is overcurrent, short circuit current or phase shortage by A phase, B phase and C phase current sensor T3, T4 and T5, and central control unit 1 controls electrical apparatus release 10 through dropout drive circuit 9 and performs trip action, to cut off the electricity supply.
Described digital switch circuit 7 includes: the first switch K1, second switch K2, the 3rd switch K3 and the 4th switch K4 being connected with the 26th, 25,24 and 17 feet of single-chip microcomputer IC1 respectively.
When the most described first switchs K1 Guan Bi (now, low level at the 26th foot of single-chip microcomputer IC1), described first preset value is 50mA, and the second preset value is 300mA.
When the most described second switch K2 closes (now, low level at the 25th foot of single-chip microcomputer IC1), described first preset value is 75mA, and the second preset value is 500mA.
When the most described first switchs K1 and second switch K2 Guan Bi, described first preset value is 100mA, and the second preset value is 1000mA.
When the most described first switchs K1 and the 3rd switch K3 Guan Bi (now, low level at the 26th and 24 feet of single-chip microcomputer IC1), described first preset value is 50mA, and the second preset value is 400mA.
When the most described second switch K2 and the 3rd switch K3 Guan Bi, described first preset value is 75mA, and the second preset value is 1000mA.
When the described 4th switchs K4 Guan Bi (now, low level at the 17th foot of single-chip microcomputer IC1), described first preset value is infinitely great, i.e. closes sudden change leakage current detection function.
Described Transformer Rectifier mu balanced circuit 4 includes: the transformator T1 being sequentially connected in series, the rectification circuit being made up of diode D1-D4 and the mu balanced circuit being made up of with stabilivolt D7 resistance R1；The secondary output end of transformator T1 is provided with lightning protection varistor R61.
Described dropout drive circuit 9 includes: the on-off circuit (being made up of audion Q8, resistance R4 and diode D10) that is connected with the dropout control signal outfan (the 34th foot of single-chip microcomputer IC1) of central control unit 1, the 3rd relay X3 and perform the dropout of trip action for controlling electrical apparatus release 10 and drive coil L；Described on-off circuit is located in the electric power loop of the 3rd relay X3, and the control output end of the 3rd relay X3 is located in the described current supply circuit driving coil L of threading off, and the 3rd relay X3 is used for controlling to thread off driving coil L to access between A phase firewire and zero line N.
Make described on-off circuit close when the dropout control signal outfan of central control unit 1 exports high level, and when making the 3rd relay X3 obtain electric, the 3rd relay X3 controls described dropout and drives the current supply circuit conducting of coil L, and electrical apparatus release 10 performs trip action.
The display unit 8 being made up of charactron LG381, audion Q1-4 etc., the display signal output part of central control unit 1 connects the signal input part of charactron LG381.
Described current stabilization circuit 5 includes the first series circuit being made up of resistance R39 and R40, the second series circuit being made up of resistance R22 and R41, the 3rd series circuit that is made up of resistance R37 and R42, A phase, B phase and C phase current sensor T3, T4 and T5 are in parallel with described resistance R40, R41 and R42 respectively, the power detecting end of central control unit 1 is the 2nd of single-chip microcomputer IC1 the, 3 and 4 feet, is connected with above-mentioned first, second, and third series circuit respectively.
The DC output end of the rectification circuit of described Transformer Rectifier mu balanced circuit 4 is provided with the first relay X1, the outfan of the first relay X1 is located in the electric power loop of described 3rd relay X3, i.e. when the first relay X1 Guan Bi, 3rd relay X3 also closes, so that electrical apparatus release 10 performs trip action.Therefore, as long as making the first relay X1 Guan Bi, electrical apparatus release 10 just can be in trip status all the time, to prevent electrical apparatus release 10 from repeatedly closing a floodgate the harm that may bring.First relay X1 Guan Bi or disconnection, can be by manually being controlled by digital switch K7.
Described amplifying circuit 3 includes that signal amplifies integration module PIC604 and peripheral auxiliary circuits thereof.
When supply line normally works, leakage current is gradual amount, if gradual leakage current is stepped up reaching to leak electricity during specified working value I Δ n, leakage relay action is tripped.When supply line occur people and animals get an electric shock even broken string land time, leakage current now is Sudden Changing Rate.Gradual discriminating is separated with Sudden Changing Rate owing to this type of leakage relay all uses when design, therefore Sudden Changing Rate is chosen is key component, generally individually use peaker detection (including positive negative pulse stuffing), when there is Sudden Changing Rate on the basis of certain gradual leakage current in circuit, peaker works, obtain a pulse signal, if this pulse signal is more than the sudden change specified working value Δ I Δ n of electric leakage, then leakage relay action tripping operation.In order to take into account gradual and sudden change electric leakage sensitivity and leakage relay operational reliability, general electric leakage working value I Δ n is all far longer than pulse action value Δ I Δ n.
Automatic reclosing operation principle brief analysis
By Fig. 1 fundamental diagram it can be seen that the detection of gradual amount and transient detection co-controlling automatic reclosing after comparison circuit differentiates performs circuit, DC relay connection point on-off in the machine control A.C. contactor break-make, complete automatic reclosing and trip avoidance function.Below reclosing work process during different drain conditions is made some and (as a example by positive pulse) is discussed:
(1) when line electrical leakage be gradual amount and incrementally increase exceed specified electric leakage working value I Δ n time, comparator A exports high potential, make reclosing perform circuit work.This signal yet suffers from after time delay, and leakage relay once trips locking, does not have automatic reclosing function.Restart after only closing leakage relay power supply, could bringing normally into operation.
(2) occur discussing in two kinds of situation when Sudden Changing Rate leaks electricity when circuit:
A Sudden Changing Rate is more than nominal pulse working value Δ I Δ n, but less than specified electric leakage working value Δ n, and sustainable existence after time delay after one minute, as shown in Figure 2.Now transient detection circuit work, and make reclosing circuit work through comparator B, reclosing again after time delay in a minute, but owing to circuit still suffers from fault electric leakage Δ I Δ, (Δ I Δ n≤Δ I Δ≤I Δ n) makes reclosing circuit again trip, and have reclosing several times to occur, if so-called two-hit phenomenon the most easily occurs in human electric shock.If in time delay one minute, this fault current disappears, then reclosing circuit automatic closing, normal operating condition recovers in supply line.
The electric leakage of b Sudden Changing Rate is more than nominal pulse working value Δ I Δ n and exceed specified electric leakage working value I Δ n, and after time delay one minute, this leakage current yet suffers from.The Sudden Changing Rate occurred in the t1 moment first by Sudden Changing Rate electric circuit inspection after make reclosing circuit work; A.C. contactor trips; leakage current reduces to zero; again close a floodgate after time delay in a minute; now still exist due to fault electric leakage, and more than I Δ n, in the t3 moment, gradual amount testing circuit is worked; reclosing circuit trips and protection blocking again, completes single shot reclosing function.
From discussed above, only when leakage current waveform meets specific waveforms, just there is the single shot reclosing function of real meaning.
Claims (1)
1. a RCCB with electric switch-on function, it is characterized in that including: inside is provided with the housing (2) of electrical apparatus release (10) and control circuit, housing (2) is provided with for driving electrical apparatus release (10) to perform the electronic conduction mechanism (3) of feed motion, this electronic conduction mechanism (3) includes motor (31), eccentric (32) and drive link (33), and described eccentric (32) is arranged on the output shaft of motor (31)；Described electrical apparatus release (10) includes the joystick (10-1) stretched out from housing (2), and one end of drive link (33) is rotationally connected with eccentric (32), and the other end is with operation handle (10-1) strand even；Described control circuit includes: central control unit (1), for detecting the sensor for detecting electric leakage (T2) of the leakage current of A phase, B phase and C phase power supply, for providing the Transformer Rectifier mu balanced circuit (4) of DC source, the dropout drive circuit (9) being connected with the dropout control signal outfan of central control unit, the digital switch circuit (7) being connected with the control signal input of central control unit, motor (31), and A phase, B phase and C phase current sensor (T3, T4, T5)；Sensor for detecting electric leakage (T2) amplified circuit (3) is connected with the detection of electrical leakage signal input part of central control unit, and the energization control signal outfan of central control unit is connected through the power end of drive circuit (6) with motor (31)；When central control unit (1) records existence sudden change leakage current in A phase, B phase or C phase power supply by sensor for detecting electric leakage (T2), and this sudden change leakage current more than the first preset value time, central control unit (1) controls electrical apparatus release (10) through dropout drive circuit (9) and performs trip action, to cut off the electricity supply；After the 20-60 second, central control unit (1) controls motor (31) through drive circuit (6) and rotates, motor (31) drives operation handle (10-1) action of electrical apparatus release (10) through eccentric (32) and drive link (33), and makes electrical apparatus release (10) perform feed motion to switch on power；When central control unit (1) is recorded in A phase, B phase or C phase power supply be there is gradual leakage current by sensor for detecting electric leakage (T2), and this gradual leakage current more than the second preset value time, central control unit (1) controls electrical apparatus release (10) through dropout drive circuit (9) and performs trip action, to cut off the electricity supply；After 3-10 minute, central control unit (1) controls motor (31) through drive circuit (6) and rotates, motor (31) drives operation handle (10-1) action of electrical apparatus release (10) through eccentric (32) and drive link (33), and make electrical apparatus release (10) perform feed motion, to switch on power；If the most gradual leakage current is still above the second preset value, central control unit (1) controls electrical apparatus release (10) through dropout drive circuit (9) and performs trip action, to cut off the electricity supply；A phase, B phase are connected through the power detecting end of current stabilization circuit (5) with central control unit (1) with C phase current sensor (T3, T4 and T5)；When central control unit (1) is recorded when there is overcurrent, short circuit current or phase shortage in A phase, B phase or C phase power supply by A phase, B phase and C phase current sensor (T3, T4 and T5), central control unit (1) controls electrical apparatus release (10) through dropout drive circuit (9) and performs trip action, to cut off the electricity supply；
The model of central control unit is the single-chip microcomputer IC1 of PIC16F74；
Described digital switch circuit (7) including: the first switch K1, second switch K2, the 3rd switch K3 and the 4th switch K4 being connected with the 26th, 25,24 and 17 feet of single-chip microcomputer IC1 respectively；
At the 26th foot that the most described first switchs K1 Guan Bi and single-chip microcomputer IC1 during low level, described first preset value is 50mA, and the second preset value is 300mA；
At the 25th foot of the most described second switch K2 Guan Bi and single-chip microcomputer IC1 during low level, described first preset value is 75mA, and the second preset value is 500mA；
When the most described first switchs K1 and second switch K2 Guan Bi, described first preset value is 100mA, and the second preset value is 1000mA；
At the 26th and 24 feet that the most described first switchs K1 and the 3rd switch K3 Guan Bi and single-chip microcomputer IC1 during low level, described first preset value is 50mA, and the second preset value is 400mA；
When the most described second switch K2 and the 3rd switch K3 Guan Bi, described first preset value is 75mA, and the second preset value is 1000mA；
At the 17th foot that the described 4th switchs K4 Guan Bi and single-chip microcomputer IC1 during low level, described first preset value is infinitely great, i.e. closes sudden change leakage current detection function；
Described Transformer Rectifier mu balanced circuit (4) including: the transformator T1 being sequentially connected in series, the rectification circuit being made up of diode D1-D4 and the mu balanced circuit being made up of with stabilivolt D7 resistance R1；The secondary output end of transformator T1 is provided with lightning protection varistor R61；
Described dropout drive circuit (9) including: the on-off circuit that is connected with the dropout control signal outfan of central control unit (1), the 3rd relay X3 and perform the dropout of trip action for controlling electrical apparatus release and drive coil L；Described on-off circuit is located in the electric power loop of the 3rd relay X3, and the control output end of the 3rd relay X3 is located in the described current supply circuit driving coil L of threading off, and the 3rd relay X3 is used for controlling to thread off driving coil L to access between A phase firewire and zero line N；On-off circuit is made up of audion Q8, resistance R4 and diode D10；
Make described on-off circuit close when the dropout control signal outfan of central control unit exports high level, and when making the 3rd relay X3 obtain electric, the 3rd relay X3 controls described dropout and drives the current supply circuit conducting of coil L, and electrical apparatus release performs trip action；
The DC output end of the rectification circuit of described Transformer Rectifier mu balanced circuit (4) is provided with the first relay X1, the outfan of the first relay X1 is located in the electric power loop of described 3rd relay X3, i.e. when the first relay X1 Guan Bi, 3rd relay X3 also closes, so that electrical apparatus release 10 performs trip action；First relay X1 Guan Bi or disconnection are by manually being controlled by digital switch K7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610089160.7A CN105895464A (en) | 2012-07-27 | 2012-07-27 | Residual current circuit breaker having automatic closing function |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610089160.7A CN105895464A (en) | 2012-07-27 | 2012-07-27 | Residual current circuit breaker having automatic closing function |
| CN201210262480.XA CN102931034B (en) | 2012-07-27 | 2012-07-27 | Rccb |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210262480.XA Division CN102931034B (en) | 2012-07-27 | 2012-07-27 | Rccb |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105895464A true CN105895464A (en) | 2016-08-24 |
Family
ID=47645811
Family Applications (4)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610089814.6A Pending CN106159893A (en) | 2012-07-27 | 2012-07-27 | There is the RCCB of reclosing function |
| CN201610089820.1A Pending CN106158540A (en) | 2012-07-27 | 2012-07-27 | A kind of RCCB with electric switch-on function |
| CN201610089160.7A Pending CN105895464A (en) | 2012-07-27 | 2012-07-27 | Residual current circuit breaker having automatic closing function |
| CN201210262480.XA Expired - Fee Related CN102931034B (en) | 2012-07-27 | 2012-07-27 | Rccb |
Family Applications Before (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610089814.6A Pending CN106159893A (en) | 2012-07-27 | 2012-07-27 | There is the RCCB of reclosing function |
| CN201610089820.1A Pending CN106158540A (en) | 2012-07-27 | 2012-07-27 | A kind of RCCB with electric switch-on function |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210262480.XA Expired - Fee Related CN102931034B (en) | 2012-07-27 | 2012-07-27 | Rccb |
Country Status (1)
| Country | Link |
|---|---|
| CN (4) | CN106159893A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112055493A (en) * | 2020-09-07 | 2020-12-08 | 广东众科智能科技股份有限公司 | Intelligent home controller based on Internet of things |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105788982A (en) * | 2016-04-15 | 2016-07-20 | 泉州市大西洋电力科技有限公司 | Switch circuit breaker |
| CN109933041B (en) * | 2017-12-19 | 2024-09-06 | 上海亿盟电气自动化技术有限公司 | Online self-diagnosis circuit of low-voltage controller |
| CN109449059A (en) * | 2018-09-27 | 2019-03-08 | 杭州四方博瑞科技股份有限公司 | Intelligent breaker with self-checking function |
| CN114604511A (en) * | 2022-03-23 | 2022-06-10 | 华能青海发电有限公司新能源分公司 | High-energy battery storage bin with independent protection effect |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2655414Y (en) * | 2003-10-20 | 2004-11-10 | 郑祥衡 | Phase and amplitude discriminating electric leak relay |
| JP2005158559A (en) * | 2003-11-27 | 2005-06-16 | Fuji Electric Fa Components & Systems Co Ltd | Earth leakage breaker |
| CN2746621Y (en) * | 2004-09-03 | 2005-12-14 | 任增辉 | Intelligent earth leakage protective device |
| CN201359979Y (en) * | 2009-03-18 | 2009-12-09 | 江苏辉能电气有限公司 | Residual current circuit breaker with automatic reclosing function |
| JP2011250486A (en) * | 2010-05-21 | 2011-12-08 | Panasonic Electric Works Co Ltd | Earth leakage breaker |
| CN202094599U (en) * | 2011-04-18 | 2011-12-28 | 乐清市公认电气有限公司 | Leakage protector adapted to electromagnetic trip circuit |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0763842B1 (en) * | 1995-03-31 | 2003-10-01 | The Nippon Signal Co., Ltd. | Solenoid relay driving circuit |
| CN201797296U (en) * | 2010-08-13 | 2011-04-13 | 颜福随 | Multifunctional intelligent earth leakage circuit breaker |
| CN202059153U (en) * | 2011-04-18 | 2011-11-30 | 乐清市公认电气有限公司 | Leakage protector suitable for over-current inverse time lag protection circuit |
| CN202749309U (en) * | 2012-07-27 | 2013-02-20 | 苏州贝腾特电子科技有限公司 | Residual current circuit breaker |
-
2012
- 2012-07-27 CN CN201610089814.6A patent/CN106159893A/en active Pending
- 2012-07-27 CN CN201610089820.1A patent/CN106158540A/en active Pending
- 2012-07-27 CN CN201610089160.7A patent/CN105895464A/en active Pending
- 2012-07-27 CN CN201210262480.XA patent/CN102931034B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2655414Y (en) * | 2003-10-20 | 2004-11-10 | 郑祥衡 | Phase and amplitude discriminating electric leak relay |
| JP2005158559A (en) * | 2003-11-27 | 2005-06-16 | Fuji Electric Fa Components & Systems Co Ltd | Earth leakage breaker |
| CN2746621Y (en) * | 2004-09-03 | 2005-12-14 | 任增辉 | Intelligent earth leakage protective device |
| CN201359979Y (en) * | 2009-03-18 | 2009-12-09 | 江苏辉能电气有限公司 | Residual current circuit breaker with automatic reclosing function |
| JP2011250486A (en) * | 2010-05-21 | 2011-12-08 | Panasonic Electric Works Co Ltd | Earth leakage breaker |
| CN202094599U (en) * | 2011-04-18 | 2011-12-28 | 乐清市公认电气有限公司 | Leakage protector adapted to electromagnetic trip circuit |
Non-Patent Citations (3)
| Title |
|---|
| 库振勋等: "《最新家庭电路设计与安装》", 30 September 2011, 河南科学技术出版社 * |
| 张洪润等: "《电子线路及应用》", 31 January 2003, 科学出版社 * |
| 王力人等: "《继电器应用100例》", 31 December 1985 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112055493A (en) * | 2020-09-07 | 2020-12-08 | 广东众科智能科技股份有限公司 | Intelligent home controller based on Internet of things |
| CN112055493B (en) * | 2020-09-07 | 2021-06-29 | 广东众科智能科技股份有限公司 | Intelligent home controller based on Internet of things |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106159893A (en) | 2016-11-23 |
| CN102931034B (en) | 2016-05-04 |
| CN106158540A (en) | 2016-11-23 |
| CN102931034A (en) | 2013-02-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204290310U (en) | A kind of oppositely ground protection circuit and ground-fault interrupter | |
| CN105576597A (en) | Residual current motion protection method and device | |
| CN106099866B (en) | Circuit breaker operation mechanism protective device with short message sending function | |
| CN104332946A (en) | Ground fault protecting circuit and ground fault breaker | |
| CN104377816A (en) | Intelligent reclosure breaker and automatic reclosure control method thereof | |
| CN101420116A (en) | Intelligent integrated electricity leakage protection device | |
| CN105895464A (en) | Residual current circuit breaker having automatic closing function | |
| CN105337417A (en) | Circuit breaker controller comprising distributed type power distribution network and working method of circuit breaker controller | |
| CN102904208B (en) | A kind of RCCB | |
| CN103701091A (en) | Electric leakage controller for circuit breaker | |
| CN205647018U (en) | Circuit breaker controller based on syllogic electric current method cooperation communication system | |
| CN201360135Y (en) | Intelligent integrated leakage protection device | |
| CN104198926A (en) | Anti-trip loop test device for breaker and control method thereof | |
| CN202749309U (en) | Residual current circuit breaker | |
| CN203849376U (en) | Breaker anti-tripping loop testing apparatus | |
| CN202059153U (en) | Leakage protector suitable for over-current inverse time lag protection circuit | |
| CN101964512A (en) | Electric leakage protector with overvoltage protective device | |
| CN202917947U (en) | Electric leakage circuit breaker | |
| CN203205830U (en) | Resettable overvoltage and under-voltage protector with leakage protection function | |
| CN203522132U (en) | Breaker electric leakage controller | |
| CN201146380Y (en) | Protective equipment for decompression, phase-off and self-switchover | |
| CN204065252U (en) | A kind of simulator of circuit breaker of practicality | |
| CN209860580U (en) | Intelligent motor protector | |
| CN202014037U (en) | Demarcation switch cabinet for cable line | |
| CN214100834U (en) | Residual current operated circuit breaker |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160824 |