CN201975757U - Integrated intelligent moulded-case circuit breaker with residual-current protection action - Google Patents
Integrated intelligent moulded-case circuit breaker with residual-current protection action Download PDFInfo
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- CN201975757U CN201975757U CN2011201401788U CN201120140178U CN201975757U CN 201975757 U CN201975757 U CN 201975757U CN 2011201401788 U CN2011201401788 U CN 2011201401788U CN 201120140178 U CN201120140178 U CN 201120140178U CN 201975757 U CN201975757 U CN 201975757U
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Abstract
The utility model relates to an integrated intelligent moulded-case circuit breaker with residual-current protection action. The intelligent moulded-case circuit breaker comprises a three-phase power-supply treatment circuit, a current signal sampling circuit, a residual-current sampling circuit, a comprehensive tripping device and a microprocessor controller, wherein the comprehensive tripping device is a circuit action-executing mechanism; the microprocessor controller is used for judging the operating conditions of current with all phases; in case of failure due to overload or short circuit, corresponding control signals are output to a tripping device to cause a product to release or trip; and when the residual current value reaches the tripping condition, the corresponding control signals are output to the tripping device and an electric-leakage trip indicating device to cause the product to trip and indicate electric-leakage trip. The integrated intelligent moulded-case circuit breaker with the residual-current protection action has the advantages of lower cost, quick response speed, high precision and adjustability of rated current, overload delay time, rated residual current and residual-current action time.
Description
Technical field
The utility model belongs to a kind of breaker of plastic casing, relates in particular to a kind of band residual current protecting action breaker of plastic casing.
Background technology
Along with carrying out in a deep going way of intelligent grid technological transformation, people are strict day by day to the requirement of Electrical Safety and Based Intelligent Control electricity consumption, and band residual current protecting action breaker of plastic casing is because of its compact conformation, and volume is little, and cost performance is high and be used widely.At present, band residual current protecting action breaker of plastic casing has two kinds of forms on the market: a kind of is split type, and assembled by non intelligent breaker of plastic casing or intelligent plastic housing circuit breaker and residual current protecting module, its shortcoming is that small product size is bigger, the cost height is installed more loaded down with trivial details; Another kind is an integral type; product is made of the inner residual current protecting module of directly installing of non intelligent breaker of plastic casing; but because employing is non-intelligent plastic housing circuit breaker; the dropout mode that its overload, short-circuit protection adopt is that heat is moving, the electromagnetic trip mode; its shortcoming is that the rated current of product is unadjustable; action response speed is slow, the difficult control of precision, and residual electricity flow valuve and the adjusting of residual current acting time have significant limitation.In view of above shortcoming, the utility model adopts the inner solution that the residual current protecting module directly is installed of intelligent plastic housing circuit breaker.
Summary of the invention
The cost height, the response speed that have band residual current protecting action breaker of plastic casing now are slow, precision is low, rated current is non-adjustable, non-adjustable, the nonadjustable deficiency of residual current acting time of overload non-adjustable, the specified residual current of delay time in order to overcome; the utility model provides a kind of cost lower; corresponding speed is fast; the precision height; rated current is adjustable; the overload delay time is adjustable; specified residual current is adjustable, the integral type band residual current protecting action intelligent plastic housing circuit breaker that the residual current acting time is adjustable.
The technical scheme that its technical problem that solves the utility model adopts is:
A kind of integral type band residual current protecting action intelligent plastic housing circuit breaker, described intelligent plastic housing circuit breaker comprises:
The three phase mains treatment circuit wherein carries out closing automatically after the quick charge to electric capacity by one the tunnel, keeps electric capacity both end voltage and electric weight by the multistage step-down constant-current circuit in another road again, supply microprocessor controller and comprehensive trip gear operate as normal;
The current signal sample circuit in order to taking the current signal of each phase main circuit, and amplifies current signal in the back input microprocessor controller;
The residual current sample circuit is in order to be carried out being input in the microprocessor controller after the vector calculus to each phase current by the zero-sequence transformer that is installed in product inside;
Comprehensive trip gear is a circuit operation actuator, in order to transship when circuit, short circuit, electric leakage situation satisfy and thread off when requiring, microprocessor controller sends the instruction of threading off and gives comprehensive release, the execution cut-off breaker is operated;
Microprocessor controller, in order to judging the operation conditions of each phase current, when transship, during short trouble, the output control signal corresponding is given trip gear, makes the product tripping operation of threading off; And when the residual electricity flow valuve reached the dropout condition, the output control signal corresponding was given trip gear and electric leakage dropout indicating device, and product dropout tripping operation and indication electric leakage are threaded off;
Described three phase mains processing unit connects described microprocessor controller, comprehensive trip gear, and described current signal sample circuit, residual current sample circuit all are connected with described microprocessor controller, and described microprocessor controller is connected with described comprehensive trip gear.
As preferred a kind of scheme: described intelligent plastic housing circuit breaker also comprises:
Electric leakage dropout indicating device is for replying an indicating device by cable, under the situation in order to the tripping operation of threading off because of residual current when product, the dropout reason of indication product is that electric leakage causes, after leak current fault is got rid of, product closes a floodgate again, microprocessor controller judges that indication can be replied the position automatically by cable when no residual current or residual current did not satisfy trip bar spare, the upset indication;
Described microprocessor controller is connected with described electric leakage dropout indicating device.
Further, described intelligent plastic housing circuit breaker also comprises:
Alternating interface between man and computer is used every technical parameter of consulting product for the user, each phase main circuit actual current value, real surplus current value, the fault inquiry of the tripping operation of last time threading off; Each phase technical parameter to product is provided with, and comprises that the switch of rated current, overload long delay operate time, short time delay operating current, short time delay operate time, instantaneous operation electric current, the N phase rated current of product, specified residual current, residual current acting time, residual current protecting function is set;
Described three phase mains treatment circuit connects described alternating interface between man and computer, and described microprocessor controller connects described alternating interface between man and computer.
Further again, described intelligent plastic housing circuit breaker also comprises:
The authigenic power supply treatment circuit charges to electric capacity after will being converted to the DC low-voltage electric energy by the induction ac high voltage electric energy that main circuit current produces, supply microprocessor controller and trip gear operate as normal when no external power supply;
Described three phase mains treatment circuit connects described self power supply processing circuit, and described self power supply processing circuit connects described microprocessor controller, comprehensive trip gear.
The beneficial effects of the utility model mainly show: cost is lower, and corresponding speed is fast, the precision height, and rated current is adjustable, and the overload delay time is adjustable, and specified residual current is adjustable, and the residual current acting time is adjustable.
Description of drawings
Fig. 1 is an operation principle block diagram of the present utility model.
Fig. 2 is a three phase mains treatment circuit schematic diagram of the present utility model.
Fig. 3 is an authigenic power supply treatment circuit schematic diagram of the present utility model.
Fig. 4 is a current signal sample circuit schematic diagram of the present utility model.
Fig. 5 is a residual current sample circuit schematic diagram of the present utility model.
Fig. 6 is the little control and treatment circuit schematic diagram of intelligence of the present utility model.
Fig. 7 is an electric leakage dropout indicating device structural representation of the present utility model.
Fig. 8 is an electric leakage dropout indication control circuit schematic diagram of the present utility model.
Fig. 9 is the structural scheme of mechanism of alternating interface between man and computer of the present utility model.
Embodiment
Below in conjunction with accompanying drawing the utility model is described further.
With reference to Fig. 1 ~ Fig. 9, a kind of integral type band residual current protecting action intelligent plastic housing circuit breaker comprises three phase mains treatment circuit, authigenic power supply treatment circuit, current signal sample circuit, residual current sample circuit, intelligent little control and treatment circuit, electric leakage dropout indicating device and control circuit, comprehensive trip gear and alternating interface between man and computer;
Wherein the three phase mains treatment circuit is made of the double loop, one the tunnel can carry out closing automatically after the quick charge to electric capacity, keep electric capacity both end voltage and electric weight by the multistage step-down constant-current circuit in another road, supply alternating interface between man and computer, microprocessor and trip gear operate as normal; The authigenic power supply treatment circuit will charge to electric capacity after will converting the DC low-voltage electric energy to by the induction ac high voltage electric energy that main circuit current produces, make product under the situation of no external power supply, guarantee alternating interface between man and computer, microprocessor controller and trip gear operate as normal; The current signal sample circuit is responsible for taking the current signal of each phase main circuit, and current signal is amplified the back import in the microprocessor controller, judge the operation conditions of each phase current by microprocessor controller, when transship, during short trouble, microprocessor controller output control signal corresponding is given trip gear, product is threaded off trip; The residual current sample circuit is carried out being input in the microprocessor controller after the vector calculus to each phase current by the zero-sequence transformer that is installed in product inside, when the residual electricity flow valuve reaches the dropout condition, microprocessor controller output control signal corresponding is given trip gear and electric leakage dropout indicating device, and product dropout tripping operation and indication electric leakage are threaded off; Electric leakage dropout indicating device is for replying an indicating device by cable, its circuit function is when product is threaded off situation about tripping because of residual current under, the dropout reason electric leakage of indication product causes, after leak current fault is got rid of, product closes a floodgate again, when microprocessor judges did not have residual current or residual current and do not satisfy trip bar spare, indication can be replied the position automatically by cable, the upset indication; Comprehensive trip gear is a circuit operation actuator, and when the satisfied dropout of situations such as circuit transships, short circuit, electric leakage required, microprocessor controller sent the instruction of threading off and gives comprehensive release, and the execution cut-off breaker is operated; The alternating interface between man and computer major function: the user consults every technical parameter of product, each phase main circuit actual current value, real surplus current value, the fault inquiry of tripping operation etc. of last time threading off; The user can be provided with by alternating interface between man and computer each phase technical parameter to product, comprises the functions such as switch setting of rated current, overload long delay operate time, short time delay operating current, short time delay operate time, instantaneous operation electric current, the N phase rated current of product, specified residual current, residual current acting time, residual current protecting function.
With reference to Fig. 1, operation principle block diagram of the present utility model, three phase mains treatment circuit provide power supply for intelligent little control and treatment circuit, electric leakage dropout indicating device, alternating interface between man and computer and comprehensive trip gear; The authigenic power supply treatment circuit provides power supply for intelligent little control and treatment circuit, comprehensive trip gear and alternating interface between man and computer; Alternating interface between man and computer makes the user can realize the actual state of the setting and the operation of inquiry main circuit of each technical parameter of product by it; By current signal sample circuit and residual current sample circuit with each data acquisition in the circuit after little control and treatment circuit is judged the operation conditions of product, if satisfy the dropout condition, then little control and treatment circuit output is threaded off and is instructed, and carries out action command by comprehensive release, realizes cutting off circuit.
With reference to Fig. 2, the three phase mains treatment circuit is made of the double loop, and wherein one the tunnel is the capacitor fast charging circuit, and another road is a plural serial stage triode step-down constant-current circuit; Quick-charging circuit can carry out quick charge to capacitor C 1, C2 earlier, and after voltage reached voltage stabilizing didoe D9 voltage, controllable silicon Q1 closed automatically, keeps electric capacity both end voltage and electric weight by the multistage triode step-down in another road constant-current circuit; Rectified three-phase circuit adopts the two-phase full-bridge rectification that is made of D1, D2, D5, D6 rectifier diode, and the rectification positive pole meets rectifier diode D7, connects another commutating phase positive pole that is made of rectifier diode D3, D4 again, and the rectification negative pole is a common port; Rectification circuit can guarantee that electric capacity can both carry out quick charge under the situation of a product scarce phase in office, guarantees the product operate as normal.
With reference to Fig. 3, the authigenic power supply treatment circuit is piled B1, B2, B3, B4 by the alternating current of the main circuit current instrument transformer generation of each phase through rectifier bridge, wafer resistance R 14, R15, R16, R17, through after the voltage stabilizing capacitor C 1, C2 being charged, provide intelligent little control and treatment circuit, comprehensive trip gear and alternating interface between man and computer power supply again.
With reference to Fig. 4, the current signal sample circuit is piled B1 by the alternating current that each phase main circuit current instrument transformer produces through rectifier bridge, B2, B3, after the B4 rectification, the negative pole one tunnel of each rectifier bridge heap is respectively through wafer resistance R 14, R15, R16, behind the R17, successively 3 of input operational amplifier IC2,12,10,5 pin, another road is respectively through resistance R 18, R19, R20, R21 and resistance R 35, R36, R37, behind the R38 successively 2 of input operational amplifier IC2,13,9,6 pin, by operational amplifier 1,7,8,14 pin output to 2 of microprocessor controller IC1,3,4,5 pin, the 11 pin ground connection of operational amplifier IC2,4 pin meet DC power supply VCC.
With reference to Fig. 5, the residual current sample circuit is carried out being input to after the vector calculus 7 pin of microprocessor controller IC1 to each phase current by the zero-sequence transformer that is installed in product inside.
With reference to Fig. 6, the microprocessor controller IC1 in intelligent little control and treatment circuit is a programmable single chip computer, and 9,10 pin connect crystal oscillator, and 2,3,4,5 pin connect each phase current sampling signal respectively; 6 pin are used for controlling comprehensive trip gear; 7,11 pin connect residual current sampled signal and comprehensive release control output; 8,19 pin ground connection; 12,17 pin connect electric leakage dropout indicating device circuit, judge that whether product make corresponding indication because of the electric leakage dropout; 13,14,15 pin connect the LCDs in the alternating interface between man and computer; 16 pin connect the grid of field effect transistor V5 in the authigenic power supply circuit; 18 pin are unsettled; 20 pin meet DC power supply VCC; 21 connect " ↓ " button in the alternating interface between man and computer and the anode of light-emitting diode L4, L6; 22 pin connect " 8 " button in the alternating interface between man and computer and the anode of light-emitting diode L3, L7; 23 pin connect " M " button in the alternating interface between man and computer and the anode of light-emitting diode L2, L8; 24 pin connect " ↑ " button in the alternating interface between man and computer and the anode of light-emitting diode L1, L5; The negative pole of 25 pin sending and receiving optical diode L1, L2, L3, L4; The negative pole of 26 pin sending and receiving optical diode L5, L6, L7, L8; 18,27,28 pin are unsettled; Microprocessor controller is by the Single Chip Microcomputer (SCM) program of internal composition, the electric current of each phase current mutual inductor sampling, the residual current of zero-sequence transformer sampling are compared analysis, judge the ruuning situation of product, as satisfy the dropout condition of stipulating in the program, the then corresponding instruction of threading off of output.
With reference to Fig. 7, electric leakage dropout indicating device is by base 1, lid 2, cover 3, indicating piece 4, permanent magnet 5, inductance coil 6, U-shaped magnetic conductive rod 7 constitutes, the two sides of indicating piece 4 is different colors, be used to refer to two kinds of situations of product, be placed with permanent magnet 5 in the indicating piece 4, be placed in the middle of the U type magnetic conductive rod 7, when inductance coil 6 logical direct current back magnetization U type magnetic conduction 7 rods, indicating piece 4 can be according to the N of permanent magnet, the S utmost point and the magnetized N of U type magnetic conductive rod, the S utmost point is made corresponding indication, opposite as both polarity, then keep indicating piece not overturn, as both polarity unanimities, indicating piece then overturns;
With reference to Fig. 8, the control circuit of indicating device is controlled by two-way, the switch of controlling triode V3, V4 by 12,17 pin of microprocessor controller IC1 is realized the sense of current of inductance coil respectively, control U type magnetic conductive rod magnetization polarity, thereby the state of indication product, close triode V1, V2 by voltage stabilizing didoe V8, V9, thereby close the electric current of inductance coil.
With reference to Fig. 9, alternating interface between man and computer is by LCDs, L1, L2, L3, L4, L5, L6, eight light-emitting diodes of L7, L8, and " M ", " 8 ", " ↑ ", " ↓ " four push-button switches are formed; After the product energized, as product fault trip was arranged last time, then the LCDs flicker shows fault trip reason last time, as fault-free, then show current value maximum in each phase current of product, at this moment, if press " ↑ " or " ↓ " push-button switch, the size of changeable demonstration A, B, C, N phase current values size and residual electricity flow valuve; If press " M " button, then light-emitting diode L1 is bright, and the load current value of LCDs display setting is if press the load current value that " ↑ " or " ↓ " button can be set product this moment; Press " M " button successively, light-emitting diode L2 then, L3, L4, L5, L6, L7, L8 is shinny successively, press " ↑ " or " ↓ " button, can set overload long delay operate time successively, the short time delay operating current, short time delay operate time, the instantaneous operation electric current, N phase rated current, specified residual current, the residual current acting time, the corresponding relation of shinny diode and setup parameter is as follows: L1 is bright-and load current value, L2 is bright-long delay operate time, L3 is bright-the short time delay operating current, L4 is bright-short time delay operate time, L5 is bright-the instantaneous operation electric current, L6 is bright-N phase rated current, L7 is bright-specified residual current, and L8 is bright-the residual current acting time; Wherein specified residual electricity flow valuve can be arranged to " OFF ", promptly closes the residual current protecting function.
The utility model makes the product internal control circuit relatively simple for structure owing to adopted above each circuit and device, has the reliable in action height, and antijamming capability is strong, and volume is little, the advantage that cost performance is high.
Claims (4)
1. integral type band residual current protecting action intelligent plastic housing circuit breaker, it is characterized in that: described intelligent plastic housing circuit breaker comprises:
The three phase mains treatment circuit is made of two-way, and wherein one the tunnel carries out closing automatically after the quick charge to electric capacity, keeps electric capacity both end voltage and electric weight by the multistage step-down constant-current circuit in another road again, supply microprocessor controller and comprehensive trip gear operate as normal;
The current signal sample circuit in order to taking the current signal of each phase main circuit, and amplifies current signal in the back input microprocessor controller;
The residual current sample circuit is in order to be carried out being input in the microprocessor controller after the vector calculus to each phase current by the zero-sequence transformer that is installed in product inside;
Comprehensive trip gear is a circuit operation actuator, in order to transship when circuit, short circuit, electric leakage situation satisfy and thread off when requiring, microprocessor controller sends the instruction of threading off and gives comprehensive release, the execution cut-off breaker is operated;
Microprocessor controller, in order to judging the operation conditions of each phase current, when transship, during short trouble, the output control signal corresponding is given trip gear, makes the product tripping operation of threading off; And when the residual electricity flow valuve reached the dropout condition, the output control signal corresponding was given trip gear and electric leakage dropout indicating device, and product dropout tripping operation and indication electric leakage are threaded off;
Described three phase mains processing unit connects described microprocessor controller, comprehensive trip gear, and described current signal sample circuit, residual current sample circuit all are connected with described microprocessor controller, and described microprocessor controller is connected with described comprehensive trip gear.
2. integral type band residual current protecting action intelligent plastic housing circuit breaker as claimed in claim 1, it is characterized in that: described intelligent plastic housing circuit breaker also comprises:
Electric leakage dropout indicating device is for replying an indicating device by cable, under the situation in order to the tripping operation of threading off because of residual current when circuit breaker, the dropout reason of indication product is that electric leakage causes, after leak current fault is got rid of, product closes a floodgate again, microprocessor controller judges that indication can be replied the position automatically by cable when no residual current or residual current did not satisfy trip bar spare, the upset indication;
Described microprocessor controller is connected with described electric leakage dropout indicating device.
3. integral type band residual current protecting action intelligent plastic housing circuit breaker as claimed in claim 1 or 2, it is characterized in that: described intelligent plastic housing circuit breaker also comprises:
Alternating interface between man and computer is used every technical parameter of consulting product for the user, each phase main circuit actual current value, real surplus current value, the fault inquiry of the tripping operation of last time threading off; Each phase technical parameter to product is provided with, and comprises that the switch of rated current, overload long delay operate time, short time delay operating current, short time delay operate time, instantaneous operation electric current, the N phase rated current of product, specified residual current, residual current acting time, residual current protecting function is set;
Described three phase mains treatment circuit connects described alternating interface between man and computer, and described microprocessor controller connects described alternating interface between man and computer.
4. integral type band residual current protecting action intelligent plastic housing circuit breaker as claimed in claim 1 or 2, it is characterized in that: described intelligent plastic housing circuit breaker also comprises:
The authigenic power supply treatment circuit charges to electric capacity after will being converted to the DC low-voltage electric energy by the induction ac high voltage electric energy that main circuit current produces, supply microprocessor controller and trip gear operate as normal when no external power supply;
Described three phase mains treatment circuit connects described self power supply processing circuit, and described self power supply processing circuit connects described microprocessor controller, comprehensive trip gear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201401788U CN201975757U (en) | 2011-05-05 | 2011-05-05 | Integrated intelligent moulded-case circuit breaker with residual-current protection action |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201401788U CN201975757U (en) | 2011-05-05 | 2011-05-05 | Integrated intelligent moulded-case circuit breaker with residual-current protection action |
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| Publication Number | Publication Date |
|---|---|
| CN201975757U true CN201975757U (en) | 2011-09-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201401788U Expired - Lifetime CN201975757U (en) | 2011-05-05 | 2011-05-05 | Integrated intelligent moulded-case circuit breaker with residual-current protection action |
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| CN (1) | CN201975757U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102170107A (en) * | 2011-05-05 | 2011-08-31 | 浙江德菱科技有限公司 | Integral intelligent moulded case circuit breaker with residual current protection action |
| CN110658367A (en) * | 2019-09-24 | 2020-01-07 | 深圳供电局有限公司 | Residual current simulation generation device and residual current action protection system |
| CN110658369A (en) * | 2019-09-24 | 2020-01-07 | 深圳供电局有限公司 | Residual current simulation generation device and residual current action protection system |
| CN110687328A (en) * | 2019-09-24 | 2020-01-14 | 深圳供电局有限公司 | Residual current simulation generation device and residual current action protection system |
-
2011
- 2011-05-05 CN CN2011201401788U patent/CN201975757U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102170107A (en) * | 2011-05-05 | 2011-08-31 | 浙江德菱科技有限公司 | Integral intelligent moulded case circuit breaker with residual current protection action |
| CN102170107B (en) * | 2011-05-05 | 2013-08-14 | 浙江德菱科技有限公司 | Integral intelligent moulded case circuit breaker with residual current protection action |
| CN110658367A (en) * | 2019-09-24 | 2020-01-07 | 深圳供电局有限公司 | Residual current simulation generation device and residual current action protection system |
| CN110658369A (en) * | 2019-09-24 | 2020-01-07 | 深圳供电局有限公司 | Residual current simulation generation device and residual current action protection system |
| CN110687328A (en) * | 2019-09-24 | 2020-01-14 | 深圳供电局有限公司 | Residual current simulation generation device and residual current action protection system |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20110914 Effective date of abandoning: 20130814 |
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| RGAV | Abandon patent right to avoid regrant |