CN102623269A - Electric leakage breaker capable of adjusting electric leakage parameters automatically and conducting low-voltage protection - Google Patents
Electric leakage breaker capable of adjusting electric leakage parameters automatically and conducting low-voltage protection Download PDFInfo
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- CN102623269A CN102623269A CN2012101076812A CN201210107681A CN102623269A CN 102623269 A CN102623269 A CN 102623269A CN 2012101076812 A CN2012101076812 A CN 2012101076812A CN 201210107681 A CN201210107681 A CN 201210107681A CN 102623269 A CN102623269 A CN 102623269A
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Abstract
The invention provides an electric leakage breaker, which is provided with a microprocessor (12). The microprocessor (12) is respectively and electrically connected with button switches (S2 and S3), an electric operation mechanism movement circuit, an electric leakage detecting circuit, a voltage detecting circuit, an encoding switch setting circuit, an actuating mechanism movement circuit and light-emitting diodes (13 and 17-21). The electric leakage breaker can adjust setting of the electric leakage parameters automatically and has functions of low-voltage protection and over-voltage protection.
Description
Technical field
The utility model relates to low voltage electrical equipment, relates in particular to the RCCB that is applied in the low voltage electrical equipment, is mainly used in the earth leakage protective of main line in the rural power grids.
Background technology
At present, it is changeless being applied to after the RCCB electric leakage parameter setting completion in the low voltage electrical equipment, and its defective is: because the variation of weather; It is big that air humidity becomes; Circuit increases because of decreasing insulating causes earth fault current, and then makes the RCCB tripping operation, at this moment; If the not manual again electric leakage parameter of setting, RCCB can not normally close a floodgate.The RCCB that is applied in the low voltage electrical equipment generally can both be realized the under voltage protection function; But powerless for overvoltage protection, and in rural power grids, overvoltage is recurrent a kind of fault also; It can destroy line insulation, even puncture equipment.The RCCB that is applied in the low voltage electrical equipment generally can only show leak current fault, and when the fault of other type occurring, the maintainer generally is difficult to judge the fault type that occurs in the circuit, so just is unfavorable for searching of failure cause.The utility model provides possibility for addressing the above problem.
Summary of the invention
The purpose of the utility model is for overcoming the deficiency of prior art; A kind of automatic reclosing RCCB with automatic adjustment electric leakage parameter function is provided: when circuit causes earth fault current to increase because of decreasing insulating; RCCB can be according to the variation of circuit, the setting of adjustment electric leakage parameter automatically; A kind of RCCB that has under voltage protection and overvoltage protection simultaneously is provided; A kind of RCCB with various faults deixis is provided, when fault takes place, has found the reason that breaks down in the circuit as early as possible, the fault Presentation Function is provided for making the maintainer.
The technical scheme that the utility model adopts is: RCCB inside comprises electric-leakage detection circuit and actuator's actuating circuit, and motor-operating mechanism is fixed on the outer seal of RCCB, and controller is fixed on the motor-operating mechanism; Slide block and motor are installed on motor-operating mechanism; Slide block is stuck on the handle on the RCCB; Motor connects the operating grip on the RCCB through gear drive; Microprocessor, push-button switch and code switch are set on controller, and microprocessor is electrically connected push-button switch, coding switch circuit, voltage detecting circuit and light-emitting diode respectively.
The beneficial effect of the utility model is:
1, abandons the processing unit of chip that leak electricity in the prior art as RCCB; Then adopt the control unit of more advanced single-chip microcomputer as RCCB; Through programming, make RCCB setting of adjustment electric leakage parameter automatically when the circuit decreasing insulating, the power supply that recovers circuit.
2, big or during when humidity in the air in rainy season; Circuit increases because of decreasing insulating causes earth fault current; And then make RCCB when tripping operation; The parameter of before next time closing a floodgate, will leak electricity is automatically heightened one grade, lets circuit is first temporarily to restore electricity, and returns to former set point again after waiting several hrs.
3, combine the automatic reclosing function, the assurance circuit is supplied power continuously, exempts the trouble of artificial adjustment, simultaneously, in order to guarantee Electrical Safety, after several hours, returns to former electric leakage pre-set parameter automatically.
4, the inner single-chip microcomputer that adopts of RCCB is as key control unit; The voltage of each phase is through after the step-down; Voltage signal is directly flowed to single-chip microcomputer,, confirm whether the voltage of each phase overvoltage or under voltage fault occur through comparing with the door value; In case the discovery electric voltage exception can make the RCCB tripping operation through the inner actuator of RCCB.
5, have under voltage protection and over-voltage protection function simultaneously, make circuit and load avoid under voltage and superpotential harm.
6, the inner single-chip microcomputer that adopts of RCCB through programming technique, makes single-chip microcomputer can realize earth leakage protective, under voltage and overvoltage protection as key control unit, and removing this part promptly is short circuit and overload protection.When fault took place, single-chip microcomputer picked out the reason that fault takes place, and connected corresponding indicator light, let it indicate the fault type that occurs in the circuit.
7, after the tripping operation of circuit breaker failover, can indicate the fault that has occurred any type in the circuit.
8, indicate the reason of circuit breaker trip through signal lamp, for the problem that solves as early as possible in the circuit provides possibility.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the utility model is done further explain.
Fig. 1 is the perspective view of the utility model.
Fig. 2 is the exploded perspective sketch map of Fig. 1.
Fig. 3 is that the periphery of microprocessor 12 among Fig. 2 connects sketch map.
Fig. 4 is code switch 16 sketch mapes among Fig. 3.
Among the figure: 1. RCCB; 2. motor-operating mechanism; 3. controller; 4. handle; 5. operating grip; 6. notch; 7. slide block; 8. hole; 9. hole; 10. support; 11. motor; 12. microprocessor; S2, S3. push-button switch; 14. the operating position of motor-operating mechanism 2; 15. buzzer; 16. code switch; 13,17,18,19,20,21.LED;
Embodiment
Form by RCCB 1, motor-operating mechanism 2 and intelligent controller 3 like Fig. 1 the utility model.Wherein RCCB 1 inside comprises electric-leakage detection circuit and actuator's actuating circuit, and electric-leakage detection circuit comprises zero sequence current mutual inductor, and zero sequence current mutual inductor is used for leakage current signal is sampled.Motor-operating mechanism 2 is fixed on the outer seal of RCCB 1, and intelligent controller 3 is fixed on the motor-operating mechanism 2.
Like Fig. 2, on RCCB 1, be provided with handle 4, operating grip 5 and notch 6.On motor-operating mechanism 2, be provided with slide block 7, hole 8, support 10 and motor 11; Wherein, slide block 7 is the bending structure, and slide block 7 is stuck on the handle 4 on the RCCB 1; Can come the handle 4 on the back operations RCCB 1, to reach RCCB 1 separating brake, combined floodgate, to detain operating function again.Motor 11 connects the operating grip 5 on the RCCB 1 through gear drive.
Like Fig. 1-3, microprocessor 12 is installed on the intelligent controller 3, and microprocessor 12 connects electrically operated institution actuating circuit, electric-leakage detection circuit and actuator's actuating circuit of motor 11 respectively.Intelligent controller 3 as key control unit, is handled the actuator of electric leakage signal, control motor-operating mechanism 2 and RCCB 1 inside by microprocessor 12.Actuating mechanism circuit receives the signal of telecommunication from intelligent controller 3, promotes RCCB 1 tripping operation by it.Microprocessor 12, start button switch S 2, trip button switch S 3 and code switch 16 are set on intelligent controller 3, microprocessor 12 is electrically connected start button switch S 2, trip button switch S 3, code switch 16 circuit and LED 1, LED2, LED3, LED4, LED5, LED6 respectively.Microprocessor 12 internal processes preestablish the residue operating current value of each gear of code switch 16.Like Fig. 4, when fourth gear position code switch K1 or K2 pushed any one position, its four pins were different four positions with the state that common port C pin connects.Microprocessor 12 is received four mouth line PC0, PC1, PD6 and PD7 on the corresponding codes switch pin respectively through four co-anode diode Q1, Q2, Q3 and Q4.Through being connected on the mouth line PB5 on the code switch C pin, PB6 selects to read code switch K1 again, the state of K2, and the current class and the delay time of each gear of corresponding program the inside definition are realized electric current and the setting of time.
Behind circuit breaker trip, pin push-button switch S2 and S3 simultaneously, microprocessor 12 detects push-button switch S2 and S3 state, gets into the maintenance pattern, and the power lights 13 that be installed on the controller 3 this moment extinguishes the stop creepage protection function.Manually sequence number 14 positions of rotary electric operating mechanism 2 are closed a floodgate switch, the load circuit energising, and the electrician can overhaul circuit and search the leak current fault circuit.Press startup SR switch S 2 after electrician's maintenance is fixed a breakdown, microprocessor 12 resets, and RCCB 1 divide-shut brake once gets into normal operation mode.If do not have manual reset RCCB 1 after maintenance is fixed a breakdown, then begin internal clocking from entering maintenance pattern and automatically restore to normal operation mode after four hours via microprocessor 12.
When code switch 16 is preset in one grade, the program inner setting is the 30mA shelves for one grade, and second gear is the 100mA shelves.When RCCB 1 detects electric leakage signal and reaches first grade of operating current; Microprocessor 12 sends trip signal; Breaker open operation, microprocessor 12 inner countdowns are simultaneously sent switching signal and are given electrically operated institution 2 after 30 seconds, rotate through motor 11 circuit breaker 1 is closed a floodgate.Circuit breaker continues to get into normal operation mode; If still detect the electric leakage signal that reaches the operating current value after closing a floodgate; And in 3 fens clock times that last once fault separating brake rises; Microprocessor 12 sends trip signal and makes circuit breaker 1 separating brake to actuator, and program inside adjusts upward one grade of operating current value (power lights 13 is by the long bright flicker that becomes) simultaneously.If outside last once fault separating brake 3 minutes then program do not do to shift up and handle.Delay time after 30 seconds and to close a floodgate once more, and if do not detect electric leakage signal after 12 hour Automatic Program adjust back preset residual operating current value.If the operating current after detecting electric leakage signal and reaching shift-up, program are judged in last once fault separating brake 3 minutes, 12 trip signals of microprocessor, (gear only adjusts upward one grade to the switching signal of not redispatching.If be preset in top grade then do not do to shift up and handle.Program judges that microprocessor 12 sends trip signal outside last once fault separating brake 3 minutes, delays time and sends switching signal in 30 seconds.
After RCCB 1 tripping operation, pin push-button switch S2 and S3 simultaneously, microprocessor 12 detects push-button switch S2 and S3 state, gets into the maintenance pattern, and the power lights 13 that be installed on the controller 3 this moment extinguishes the stop creepage protection function.Manually sequence number 14 positions of rotary electric operating mechanism 2 are closed a floodgate switch, the load circuit energising, and the electrician can overhaul circuit and search the leak current fault circuit.Press startup SR switch S 2 after electrician's maintenance is fixed a breakdown, microprocessor 12 resets, and RCCB 1 divide-shut brake once gets into normal operation mode.If do not have manual reset RCCB 1 after maintenance is fixed a breakdown, then begin internal clocking from entering maintenance pattern and automatically restore to normal operation mode after four hours via microprocessor 12.
Like Fig. 3; The structure of voltage detecting circuit is: from the end of incoming cables of RCCB 1; All be connected on the switch J4 mutually through lead four; The phase voltage of each phase is delivered to comparison discharge circuit U4A, U4B and U4C then through high-power resistance R17, R20, R26 and R27 step-down on each lead-in wire loop, and relatively discharge circuit U4A, U4B and U4C are one four groups integrated operational amplifier circuits.Send into operational amplification circuit simultaneously relatively with the given voltage of reference circuit after each phase voltage step-down.Positive pole in amplifier adds reference voltage, and amplifier is each and the variation of reference voltage relatively.Relatively connect microprocessor 12 after the output parallel connection of discharge circuit U4A, U4B, U4C; And changing value sent into the A/D thief hatch line of microprocessor 12; Microprocessor 12 is inner through program setting change in voltage scopes, then is judged to under-voltagely less than set point, then is judged to overvoltage greater than set point; And no matter be under-voltage or overvoltage; Microprocessor 12 all will be connected actuator's actuating circuit, make RCCB 1 tripping operation cut off major loop, thereby realize the function of under voltage protection and overvoltage protection simultaneously.Capacitor C 2, C4, C7, C13 are filter capacitors, and the LC filter circuit of being made up of inductance L 15, capacitor C 3 connects relatively discharge circuit U4A, can make the power supply of amplifier stable.
The value that microprocessor 12 is gathered after respectively comparing realizes each phase voltage situation of change of monitoring.When detecting 70% programmed decision that voltage is lower than rated voltage is under-voltage condition, and microprocessor 12 sends trip signals and makes RCCB 1 separating brake in setting-up time.Because be to go up the inlet wire sample detecting, so microprocessor 12 still can be gathered voltage signal behind RCCB 1 separating brake.When voltage returns to 70% when above of rated voltage, microprocessor 12 timing are sent switching signal and are closed a floodgate for motor 11 after 30 seconds.When detecting 120% to 140% programmed decision that voltage is higher than rated voltage is overvoltage condition, and microprocessor 12 time-delays are sent trip signal and made circuit breaker 1 separating brake after 3 seconds.When detect voltage be higher than rated voltage 150% and when above microprocessor 12 do not delay time and send trip signal and make RCCB 1 instantaneous separating brake.Same when voltage return to rated voltage 110% in, microprocessor 12 timing are sent switching signal and are given motor-operating mechanism 2 combined floodgates after 30 seconds.
Circuit is made up of three LEDs 4 (19), LED5 (20), LED6 (21) and three current-limiting resistance R9, R13, R49, and they connect respectively in three different+5V circuit, are controlled by the different port of microprocessor (12) respectively.Wherein LED4 (19) is the leak current fault indicator light, is used to refer to the leak current fault that occurs in the timberline road; LEDS (20) is under voltage and overvoltage malfunction indicator lamp, and blinking red lamp is represented and occurred the under voltage fault in the circuit, the overvoltage fault occurred in the long bright representative circuit of red light; LED6 (21) is overload and short trouble indicator light, is used to refer to the overload or the short trouble that occur in the timberline road.
Cause RCCB 1 tripping operation when breaking down in the circuit after, microprocessor 12 reads and causes the signal that trips, if leak current fault, then connects the circuit at LED 4 (19) places, and this moment, blinking red lamp revealed leak current fault in the cue circuit; The rest may be inferred, can realize the indication of overvoltage, under voltage fault; When RCCB 1 tripping operation, when little processing 12 did not but read above three kinds of fault-signals, according to program setting, microprocessor 12 was connected the circuit at LED6 (21) place, has occurred overload or short trouble in the cue circuit.
When RCCB 1 closed a floodgate normal operation, power lights 13 (green) was long bright, and combined floodgate lamp 17 (green) is long bright, and separating brake lamp 18 (redness) extinguishes.Circuit breaker 1 tripping operation when microprocessor 12 detects greater than the residual operating current value, combined floodgate lamp 17 extinguishes, the separating brake lamp is 18 bright, electric leakage lamp 19 (yellow) is glittering; When detect the electric leakage signal tripping operation in three minutes again at last once leak current fault, power lights 13 glittering (Automatic Program electric leakage action grade shifts up), combined floodgate lamp 17 extinguish, the separating brake lamp is 18 bright, electric leakage lamp 19 is glittering; After shifting up, still detect electric leakage signal in three minutes, the RCCB tripping operation, power lights is 13 glittering, combined floodgate lamp 17 extinguishes, the separating brake lamp is 18 bright, electric leakage lamp 19 is long bright.
When microprocessor 12 detects under-voltage signal, circuit breaker 1 tripping operation, power lights is 13 bright, combined floodgate lamp 17 extinguishes, separating brake lamp 18 bright, under-voltage overvoltage lamps 20 (yellow) are glittering; When voltage recover normal after, power lights is 13 bright, the combined floodgate lamp is 17 bright, separating brake lamp 18 extinguishes, under-voltage overvoltage lamp 20 extinguishes.When microprocessor 12 detects the overvoltage signal, circuit breaker 1 tripping operation, power lights is 13 bright, combined floodgate lamp 17 extinguishes, separating brake lamp 18 is bright, under-voltage, and overvoltage lamps 20 are long bright; When voltage recover normal after, power lights is 13 bright, the combined floodgate lamp is 17 bright, separating brake lamp 18 extinguishes, under-voltage overvoltage lamp 20 extinguishes.
When microprocessor 12 does not detect fault-signal, tripping operation appears in circuit breaker 1, then is judged to be the short circuit overload fault, and short circuit overload lamp 21 (yellow) is glittering.
Claims (4)
1. RCCB with automatic adjustment electric leakage parameter and under-voltage protection; RCCB (1) inside has electric-leakage detection circuit and actuator's actuating circuit; It is characterized in that: motor-operating mechanism (2) is fixed on the outer seal of RCCB (1), and controller (3) is fixed on the motor-operating mechanism (2); Go up installation slide block (7) and motor (11) at electric operating operating mechanism (2); Slide block (7) is stuck on the handle (4) on the RCCB (1); Motor (11) connects the operating grip (5) on the RCCB (1) through gear drive; Microprocessor (12) is set on controller (3), start button switch (S2) and trip button switch (S3), push-button switch (S2, S3) is electrically connected microprocessor (12).
2. the RCCB with automatic adjustment electric leakage parameter and under-voltage protection as claimed in claim 1; It is characterized in that: controller (3) is provided with code switch (16), and microprocessor (12) is electrically connected push-button switch (S2, S3), code switch (16) circuit, voltage detecting circuit and light-emitting diode respectively.
3. like the said RCCB of claim 2 with automatic adjustment electric leakage parameter and under-voltage protection; It is characterized in that: each connects relatively discharge circuit (U4A, U4B, U4C) four phase service entrance switchs (J4) of RCCB (1) after resistance (R17, R20, R26, R27) step-down, relatively connect microprocessor (12) after the output parallel connection of discharge circuit (U4A, U4B, U4C).
4. RCCB as claimed in claim 1; It is characterized in that: microprocessor (12) is electrically connected push-button switch (S2, S3), code switch (16) circuit, electrically operated institution actuating circuit and light-emitting diode respectively; Microprocessor (12) is received four mouth lines (PC0, PC1, PD6, PD7) on the pin of corresponding codes switch (16) respectively through four co-anode diodes (Q1, Q2, Q3, Q4), and a mouthful line (PB5, PB6) is connected on the C pin of code switch (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101076812A CN102623269A (en) | 2012-04-13 | 2012-04-13 | Electric leakage breaker capable of adjusting electric leakage parameters automatically and conducting low-voltage protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101076812A CN102623269A (en) | 2012-04-13 | 2012-04-13 | Electric leakage breaker capable of adjusting electric leakage parameters automatically and conducting low-voltage protection |
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| CN102623269A true CN102623269A (en) | 2012-08-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012101076812A Pending CN102623269A (en) | 2012-04-13 | 2012-04-13 | Electric leakage breaker capable of adjusting electric leakage parameters automatically and conducting low-voltage protection |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102610452A (en) * | 2012-04-13 | 2012-07-25 | 江苏辉能电气有限公司 | Leakage circuit breaker |
| CN103996581A (en) * | 2014-05-29 | 2014-08-20 | 云南追梦科技有限公司 | Breaker with overvoltage and undervoltage protection function and automatic reset function |
| WO2018197252A1 (en) * | 2017-04-26 | 2018-11-01 | Sagemcom Energy & Telecom Sas | Method for detecting a sag in a phase voltage of an electrical network |
| CN113097972A (en) * | 2021-04-01 | 2021-07-09 | 国网新疆电力有限公司昌吉供电公司 | Circuit fault early warning information transmission equipment |
-
2012
- 2012-04-13 CN CN2012101076812A patent/CN102623269A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102610452A (en) * | 2012-04-13 | 2012-07-25 | 江苏辉能电气有限公司 | Leakage circuit breaker |
| CN103996581A (en) * | 2014-05-29 | 2014-08-20 | 云南追梦科技有限公司 | Breaker with overvoltage and undervoltage protection function and automatic reset function |
| WO2018197252A1 (en) * | 2017-04-26 | 2018-11-01 | Sagemcom Energy & Telecom Sas | Method for detecting a sag in a phase voltage of an electrical network |
| FR3065810A1 (en) * | 2017-04-26 | 2018-11-02 | Sagemcom Energy & Telecom Sas | METHOD FOR DETECTING A DIFFERENCE IN A PHASE VOLTAGE OF AN ELECTRICAL NETWORK |
| CN110573891A (en) * | 2017-04-26 | 2019-12-13 | 萨基姆通讯能源及电信联合股份公司 | Method for detecting a dip in the phase voltage of an electrical network |
| US11199567B2 (en) | 2017-04-26 | 2021-12-14 | Sagemcom Energy & Telecom Sas | Method for detecting a sag in a phase voltage of an electrical network |
| CN110573891B (en) * | 2017-04-26 | 2022-08-26 | 萨基姆通讯能源及电信联合股份公司 | Method for detecting a dip in the phase voltage of an electrical network |
| CN113097972A (en) * | 2021-04-01 | 2021-07-09 | 国网新疆电力有限公司昌吉供电公司 | Circuit fault early warning information transmission equipment |
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Application publication date: 20120801 |