CN106158540A - A kind of RCCB with electric switch-on function - Google Patents
A kind of RCCB with electric switch-on function Download PDFInfo
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- CN106158540A CN106158540A CN201610089820.1A CN201610089820A CN106158540A CN 106158540 A CN106158540 A CN 106158540A CN 201610089820 A CN201610089820 A CN 201610089820A CN 106158540 A CN106158540 A CN 106158540A
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- electrical apparatus
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Classifications
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- 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
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- 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
- H01H71/66—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
- H01H71/123—Automatic release mechanisms with or without manual release using a solid-state trip unit
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- Emergency Protection Circuit Devices (AREA)
- Breakers (AREA)
Abstract
The present invention relates to a kind of RCCB with electric switch-on function, comprising: housing and electronic conduction mechanism, this electronic conduction mechanism includes motor, eccentric and drive link；Control circuit includes: central control unit, sensor for detecting electric leakage, dropout drive circuit and motor.In central control unit records A phase, B phase or C phase power supply, there is sudden change leakage current, and when this sudden change leakage current is more than the first preset value, central control unit controls electrical apparatus release through dropout drive circuit and performs trip action, to cut off the electricity supply；After 20 60 seconds, 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；When recording, A phase, B phase or C phase power supply exist gradual leakage current, and when this electric current is more than the second preset value, central control unit controls electrical apparatus release and performs trip action, to cut off the electricity supply.
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, and transformer is by electricity
The current signal of motivation major loop is converted into small-signal current, delivers to monolithic after signaling conversion circuit and signal conditioning circuit
Machine, single-chip microcomputer carries out electric leakage sampling, three-phase current sampling to it, and judges whether electric leakage, phase shortage, short circuit, stall, three-phase successively
Uneven, overload, and then drive LED display module to show by display driver circuit, and cut off electricity by output control circuit
The input power of motivation.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: cannot be according to the gradual leakage current in power supply circuits with prominent
Become situation automatic trip and the automatic closing of leakage current, bring inconvenience to use.
Chinese patent literature notification number CN2496166Y disclose a kind of have gradual and sudden change two adjusting meanss leakage
Non-electricity protector, is selected variable (gradual with suddenly change) reference signal circuit that switch forms with at least three resistance with corresponding by multidigit
Variable (gradual with sudden change) comparator circuit be connected, separately constitute gradual with the device that can regulate respectively that suddenlys change.The program
It is disadvantageous in that: using analog circuit to realize gradual and sudden change leakage current monitoring, reliability is relatively low, and the program cannot
The function of automatic trip and combined floodgate is realized 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, leakage
Electrical signal detection circuit, over-current signal testing circuit, gradual electric leakage signal output circuit, sudden change electric leakage signal output circuit, mistake
Stream signal integration output circuit, over-current signal amplification output circuit, automatic reset circuit, reset lockout circuit, test with
Display circuit etc..Its after earth leakage protective action can automatic reclosing once.The program is disadvantageous in that: use simulation electricity
Road realizes the gradual monitoring with sudden change leakage current and shutting-brake control, is easily disturbed, and reliability is relatively low.
Summary of the invention
The technical problem to be solved be to provide a kind of can be according to the gradual leakage current in power supply circuits and prominent
The situation becoming leakage current realizes the RCCB of automatic trip and automatic switching-in function.
The technical scheme solving above-mentioned technical problem is: a kind of RCCB with electric switch-on function, inside sets
Having 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, the other end and behaviour
Make handle strand even；Described control circuit includes: central control unit, for detecting A phase, B phase and the leakage current of C phase power supply
Sensor for detecting electric leakage, for providing the Transformer Rectifier mu balanced circuit of DC source, the dropout with central control unit controls
The dropout drive circuit that signal output part is connected, the digital switch being connected with the control signal input of central control unit electricity
Road, motor, and A phase, B phase and C phase current sensor；The amplified circuit of sensor for detecting electric leakage and central control unit
Detection of electrical leakage signal input part be connected, the energization control signal outfan of central control unit is through drive circuit and motor
Power end be connected；Leak when central control unit records existence sudden change in A phase, B phase or C phase power supply by sensor for detecting electric leakage
Electricity electric current, and when this sudden change leakage current is more than the first preset value, central control unit controls electrical apparatus release through dropout drive circuit
Perform trip action, to cut off the electricity supply；After the 20-60 second, central control unit controls motor through drive circuit and rotates, stepping
Motor drives the operation handle action of electrical apparatus release through eccentric and drive link, and makes electrical apparatus release perform feed motion to connect electricity
Source；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
When this gradual leakage current is more than the second preset value, central control unit controls electrical apparatus release execution through dropout drive circuit and threads off dynamic
Make, to cut off the electricity supply；After 3-10 minute, central control unit controls motor through drive circuit and rotates, motor warp
Eccentric and drive link drive the operation handle action of electrical apparatus release, and make electrical apparatus release perform feed motion, to switch on power；If this
Time gradual leakage current still above the second preset value, central control unit controls electrical apparatus release through dropout drive circuit and performs dropout
Action, to cut off the electricity supply；A phase, B phase and C phase current sensor are through the power detecting end phase of current stabilization circuit with central control unit
Even；When central control unit records existence overload electricity in A phase, B phase or C phase power supply by A phase, B phase and C phase current sensor
When stream, short circuit current or phase shortage, central control unit controls electrical apparatus release through dropout drive circuit and performs trip action, to cut off electricity
Source；
The model of central control unit is the single-chip microcomputer IC1 of PIC16F74；
Described digital switch circuit includes: the first switch K1 of being connected with the 26th, 25,24 and 17 feet of single-chip microcomputer IC1 respectively, the
Two switch K2, the 3rd switch K3 and the 4th switch K4；
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,
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,
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. close sudden change leakage current detection function；
Described Transformer Rectifier mu balanced circuit includes: the transformator T1 that is sequentially connected in series, the rectified current being made up of diode D1-D4
Road 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,
Three relay X3 and for control electrical apparatus release perform trip action dropout drive coil L；Described on-off circuit is located at the 3rd
In the electric power loop of relay X3, the control output end of the 3rd relay X3 is located at described dropout and is driven the current supply circuit of coil L
In, 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 by audion
Q8, resistance R4 and diode D10 are constituted；
Make described on-off circuit close when the dropout control signal outfan of central control unit exports high level, and make the 3rd to continue
When electrical equipment X3 obtains electric, the 3rd relay X3 controls described dropout and drives the current supply circuit conducting of coil L, and electrical apparatus release execution is threaded off dynamic
Make；
Described current stabilization circuit includes the first series circuit being made up of resistance R39 and resistance R40, by resistance R22 and resistance R41 structure
The second series circuit become, the 3rd series circuit being made up of resistance R37 and resistance R42, A phase current sensor T3, B phase current
Sensor T4 and C phase current sensor T5 is in parallel with described resistance R40, resistance R41 and resistance R42 respectively, central control unit 1
Power detecting end be the 2nd of single-chip microcomputer IC1 the, 3 and 4 feet, respectively with above-mentioned first series circuit, the second series circuit and the 3rd
Series circuit is connected.
The present invention has positive effect: in the RCCB of (1) present invention, after electrical apparatus release is threaded off automatically, passes through
After the time period preset, electronic conduction mechanism drives electrical apparatus release automatically to perform feed motion.In control circuit, central control unit
A phase, B phase and the leakage current of C phase power supply is detected through sensor for detecting electric leakage, with detection sudden change and gradual leakage current, and root
Control electrical apparatus release according to the size of sudden change and gradual leakage current and perform trip action, then according to the time interval preset by control
Motor processed makes electrical apparatus release perform feed motion to switch on power, thus realizes the action of automatic closing；The electric leakage of the present invention
In chopper, Based Intelligent Control element i.e. central control unit is used to complete Based Intelligent Control step, relative to traditional simulation control
Road processed, the RCCB of the present invention is difficult to the impact of interfered signal, and reliability is preferable, and structure is simpler.(2) present invention
In control circuit, central control unit is recorded in A phase, B phase or C phase power supply by A phase, B phase and C phase current sensor and existed
When carrying electric current, short circuit current or phase shortage, central control unit controls electrical apparatus release through dropout drive circuit and performs trip action, to cut
Power-off source.The RCCB of the present invention uses Based Intelligent Control element i.e. central control unit to complete Based Intelligent Control step, phase
Controlling road for traditional simulation, the RCCB of the present invention is difficult to the impact of interfered signal, and reliability is preferable, structure
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, on housing 2
Being 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, 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, one end of drive link 33 is rotationally connected with eccentric 32, the other end and operation handle
10-1 twists even.
See that Fig. 2-3, described control circuit include: the central control unit 1 single-chip microcomputer IC1 of PIC16F74 (model be), use
In the sensor for detecting electric leakage T2 of the leakage current of detection A phase, B phase and C phase power supply, for providing the Transformer Rectifier of DC source
Mu balanced circuit 4, the dropout being connected with the dropout control signal outfan (the 34th foot of single-chip microcomputer IC1) of central control unit 1 is driven
Galvanic electricity road 9, with control signal input (the 15th of single-chip microcomputer IC1 the, 16,17,24, the 25 and 26 foot) phase of central control unit 1
Digital switch circuit 7 even, motor 31, and A phase, B phase and C phase current sensor T3, T4 and T5；Detection of electrical leakage senses
The amplified circuit of device 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, in
The energization control signal outfan (the 6th foot of single-chip microcomputer IC1) of centre control unit 1 is through the electricity of drive circuit 6 with motor 31
Source is connected.
Leak electricity when central control unit 1 records existence sudden change in A phase, B phase or C phase power supply by sensor for detecting electric leakage T2
Electric current, and when this sudden change leakage current is more than the first preset value, central control unit 1 controls electrical apparatus release through dropout drive circuit 9
10 perform 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 conjunction
Lock action also makes described operation handle 10-1 be in closing position, is also turned on power supply.
Gradual electric leakage 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
Electric current, and when this gradual leakage current is more than the second preset value, central control unit 1 controls electrical apparatus release through dropout drive circuit 9
10 perform trip action, to cut off the electricity supply；After 5 minutes, central control unit 1 controls motor 31 turns through drive circuit 6
Dynamic, 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 warp
Dropout drive circuit 9 controls electrical apparatus release 10 and performs trip action, and makes described operation handle 10-1 be in trip positions, cuts simultaneously
Power-off source.
Described A phase, B phase and C phase current sensor T3, T4 and T5 are through the power supply inspection of current stabilization circuit 5 with central control unit 1
Survey end (the 2nd of single-chip microcomputer IC1 the, 3 and 4 feet) to be connected；When central control unit 1 by A phase, B phase and C phase current sensor T3,
T4 and T5 records when wherein there is overcurrent, short circuit current or phase shortage, and central control unit 1 controls through dropout drive circuit 9
Electrical apparatus release 10 performs trip action, to cut off the electricity supply.
Described digital switch circuit 7 includes: the first switch being connected with the 26th, 25,24 and 17 feet of single-chip microcomputer IC1 respectively
K1, second switch K2, the 3rd switch K3 and the 4th switch K4.
When the most described first switchs K1 Guan Bi (now, low level at the 26th foot of single-chip microcomputer IC1), described first presets
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 presets
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, the second preset value
For 1000mA.
When the most described first switchs K1 and the 3rd switch K3 Guan Bi (now, low electricity at the 26th and 24 feet of single-chip microcomputer IC1
Flat) time, 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, the second preset value
For 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
For infinity, i.e. close sudden change leakage current detection function.
Described Transformer Rectifier mu balanced circuit 4 includes: the transformator T1 that is sequentially connected in series, be made up of diode D1-D4
Rectification circuit and the mu balanced circuit being made up of with stabilivolt D7 resistance R1；The secondary output end of transformator T1 is provided with the pressure-sensitive electricity of lightning protection
Resistance R61.
Described dropout drive circuit 9 includes: with the dropout control signal outfan of central control unit 1 (single-chip microcomputer IC1's
34th foot) connected on-off circuit (being made up of audion Q8, resistance R4 and diode D10), the 3rd relay X3 and being used for
Control electrical apparatus release 10 and perform the dropout driving coil L of trip action；Described on-off circuit is located at the power supply of the 3rd relay X3 and is returned
Lu Zhong, the control output end of the 3rd relay X3 be located at described thread off drive coil L current supply circuit in, the 3rd relay X3 use
Coil L is driven to access between A phase firewire and zero line N in controlling to thread off.
Make described on-off circuit close when the dropout control signal outfan of central control unit 1 exports high level, and make
When 3rd relay X3 obtains electric, the 3rd relay X3 controls described dropout and drives the current supply circuit conducting of coil L, electrical apparatus release 10
Perform trip action.
The display unit 8 being made up of charactron LG381, audion Q1-4 etc., the display signal output of central control unit 1
The signal input part of termination charactron LG381.
Described current stabilization circuit 5 includes the first series circuit being made up of resistance R39 and R40, is made up of resistance R22 and R41
The second series circuit, 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 is in parallel with described resistance R40, R41 and R42 respectively, and the power detecting end of central control unit 1 is the 2nd of single-chip microcomputer IC1 the, 3
With 4 feet, it 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 first relay
The outfan of device X1 is located in the electric power loop of described 3rd relay X3, i.e. when the first relay X1 Guan Bi, and the 3rd relay
Device 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 is just
Trip status can be in 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 disconnected
Open, 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 leaking electricity specified
During 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 now
Electric current is Sudden Changing Rate.Gradual discriminating, therefore Sudden Changing Rate is separated with Sudden Changing Rate owing to this type of leakage relay all uses when design
Choosing is key component, generally individually uses peaker detection (including positive negative pulse stuffing), when circuit is at certain gradual leakage current
On the basis of time Sudden Changing Rate occurs, peaker works, and obtains a pulse signal, if this pulse signal is specified more than sudden change electric leakage dynamic
Work value Δ I Δ n, then leakage relay action tripping operation.Run to take into account gradual and sudden change electric leakage sensitivity and leakage relay
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 gradual amount detection with transient detection through comparison circuit differentiate after co-controlling from
Dynamic reclosing performs circuit, DC relay connection point on-off in the machine control A.C. contactor break-make, complete automatic reclosing
With 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, the high electricity of comparator A output
Position, makes reclosing perform circuit work, and this signal yet suffers from after time delay, and leakage relay once trips locking, does not has
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 through time delay after one minute
Rear sustainable existence, as shown in Figure 2.Now transient detection circuit work, and make reclosing circuit work through comparator B, through one
Reclosing again after minute time delay, but owing to circuit still suffers from fault electric leakage Δ I Δ, (Δ I Δ n≤Δ I Δ≤I Δ n) makes weight
Combined floodgate circuit trips again, and has reclosing several times to occur, if human electric shock the most easily occurs that so-called two-hit is existing
As.If in time delay one minute, this fault current disappears, then reclosing circuit automatic closing, properly functioning shape recovers in supply line
State.
The electric leakage of b Sudden Changing Rate more than nominal pulse working value Δ I Δ n and exceedes specified electric leakage working value I Δ n, time delay one point
After clock, 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
Making, A.C. contactor trips, and leakage current is reduced to zero, again closed a floodgate after time delay in a minute, now still deposits 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,
Complete single shot reclosing function.
From discussed above, only when leakage current waveform meets certain waveform, just there is the once coincidence of real meaning
Lock function.
Claims (1)
1. a RCCB with electric switch-on function, it is characterised in that including: inside is provided with electrical apparatus release (10) and control
The housing (2) of circuit processed, 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
On the output shaft of motor (31)；Described electrical apparatus release (10) includes the joystick (10-1) stretched out from housing (2), transmission
One end of bar (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, is used for carrying
For the Transformer Rectifier mu balanced circuit (4) of DC source, the dropout being connected with the dropout control signal outfan of central control unit
Drive circuit (9), 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) and central authorities' control
The detection of electrical leakage signal input part of unit processed is connected, and the energization control signal outfan of central control unit is through drive circuit (6)
It is connected with the power end of motor (31)；When central control unit (1) records A phase, B phase by sensor for detecting electric leakage (T2)
Or C phase power supply exists sudden change leakage current, and when this sudden change leakage current is more than the first preset value, central control unit (1)
Control electrical apparatus release (10) through dropout drive circuit (9) and perform trip action, to cut off the electricity supply；After the 20-60 second, central control unit
(1) controlling motor (31) through drive circuit (6) to rotate, motor (31) drives through eccentric (32) and drive link (33)
Operation handle (10-1) action of electrical apparatus release (10), and make electrical apparatus release (10) perform feed motion to switch on power；When central authorities are controlled
Unit processed (1) is recorded by sensor for detecting electric leakage (T2) and there is gradual leakage current in A phase, B phase or C phase power supply, and this delays
When becoming leakage current more than 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；After 3-10 minute, central control unit (1) controls motor (31) through drive circuit (6)
Rotating, 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, in
Centre 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 and
C phase current sensor (T3, T4 and T5) is connected through the power detecting end of current stabilization circuit (5) with central control unit (1)；Work as central authorities
Control unit (1) is recorded in A phase, B phase or C phase power supply existed by A phase, B phase and C phase current sensor (T3, T4 and T5)
When carrying electric current, short circuit current or phase shortage, central control unit (1) controls electrical apparatus release (10) through dropout drive circuit (9) and performs de-
Pull work, 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 being connected with the 26th, 25,24 and 17 feet of single-chip microcomputer IC1 respectively
K1, second switch K2, the 3rd switch K3 and the 4th switch K4；
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,
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,
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. close sudden change leakage current detection function；
Described Transformer Rectifier mu balanced circuit (4) including: the transformator T1 that is sequentially connected in series, be made up of diode D1-D4 whole
Current circuit 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 switch electricity being connected with the dropout control signal outfan of central control unit (1)
Road, the 3rd relay X3 and for control electrical apparatus release perform trip action dropout drive coil L；Described on-off circuit is located at
In the electric power loop of the 3rd relay X3, the control output end of the 3rd relay X3 is located at described dropout and is driven the power supply of coil L
In loop, 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 by three poles
Pipe Q8, resistance R4 and diode D10 are constituted；
Make described on-off circuit close when the dropout control signal outfan of central control unit exports high level, and make the 3rd to continue
When electrical equipment X3 obtains electric, the 3rd relay X3 controls described dropout and drives the current supply circuit conducting of coil L, and electrical apparatus release execution is threaded off dynamic
Make；
Described current stabilization circuit (5) includes the first series circuit being made up of resistance R39 and resistance R40, by resistance R22 and resistance
The second series circuit that R41 is constituted, the 3rd series circuit that is made up of resistance R37 and resistance R42, A phase current sensor T3, B
Phase current sensor T4 and C phase current sensor T5 is in parallel with described resistance R40, resistance R41 and resistance R42 respectively, central authorities' control
The power detecting end of unit 1 processed is the 2nd of single-chip microcomputer IC1 the, 3 and 4 feet, respectively with above-mentioned first series circuit, the second series electrical
Road is connected with the 3rd series circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610089820.1A CN106158540A (en) | 2012-07-27 | 2012-07-27 | A kind of RCCB with electric switch-on function |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610089820.1A CN106158540A (en) | 2012-07-27 | 2012-07-27 | A kind of RCCB with electric switch-on 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 |
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| CN106158540A true CN106158540A (en) | 2016-11-23 |
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 (1)
| 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 |
Family Applications After (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| 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 |
Country Status (1)
| Country | Link |
|---|---|
| CN (4) | CN106159893A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN109933041A (en) * | 2017-12-19 | 2019-06-25 | 上海亿盟电气自动化技术有限公司 | A kind of online self-diagnostic circuit of low pressure controller |
Families Citing this family (3)
| 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 |
| 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 |
| 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 |
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| 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 |
| 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 |
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| EP0763842B1 (en) * | 1995-03-31 | 2003-10-01 | The Nippon Signal Co., Ltd. | Solenoid relay driving circuit |
| 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 |
| 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 (4)
| 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 |
| 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 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109933041A (en) * | 2017-12-19 | 2019-06-25 | 上海亿盟电气自动化技术有限公司 | A kind of online self-diagnostic circuit of low pressure 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106159893A (en) | 2016-11-23 |
| CN102931034B (en) | 2016-05-04 |
| CN102931034A (en) | 2013-02-13 |
| CN105895464A (en) | 2016-08-24 |
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