CN2596541Y - Intelligent multifunction breaker - Google Patents
Intelligent multifunction breaker Download PDFInfo
- Publication number
- CN2596541Y CN2596541Y CN 03203647 CN03203647U CN2596541Y CN 2596541 Y CN2596541 Y CN 2596541Y CN 03203647 CN03203647 CN 03203647 CN 03203647 U CN03203647 U CN 03203647U CN 2596541 Y CN2596541 Y CN 2596541Y
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- resistance
- comparison amplifier
- link
- diode
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Abstract
The utility model provides an intelligent multifunctional breaker which comprises a contact part, an insulating casing, a machine operating assembly, a mutual inductor, a direct current tripping device and a circuit control board, wherein, the circuit control board comprises an impedance transformer and anti-jamming link, an integrator link, a communication signal processing link, a door bank comparison amplifier link, a power amplification output link, a phase-absent link, an electrical leakage controlling link, an under-voltage controlling link and a direct current voltage stabilization link. The device can realize overcurrent adjustment, short-circuit current adjustment and electrical leakage current adjustment. The utility model has the different protection of electrical leakage, overload, short-circuit phenomenon, phase-absent phenomenon, under-voltage phenomenon, etc. and has the various display functions; simultaneously, the utility model has the advantages of high controlling precision, wide ranges of set current regulation, low temperature and low power consumption.
Description
Technical field
The utility model relates to a kind of low-voltage circuit breaker, especially can realize the low-voltage circuit breaker to electric leakage, overload, short circuit, phase shortage, under-voltage kinds of protect and demonstration.
Background technology
High-capacity intelligent type Multifunctional breaker develops very fast abroad, develops into integrated chip from apportion element, integrated circuit.80～nineties, French MG company, execute priorities such as the company of bearing, German ABB AB, Siemens Company, Japan OMRON the intelligent electronic release is used for large capcity breaker.The domestic Japanese large capcity breaker of introducing as Beijing Switch Factory, the large capcity breaker that the intelligent switch in Suzhou Co., Ltd produces, electric current is 630～4000A.Yet low capacity 20～630A intelligent multifunction circuit breaker still belongs to blank at home.Traditional motor overload protection device main element adopts the double-metal sheet type thermal overload release, and its shortcoming is: power consumption is big, is subject to ambient temperature, electrical parameter and machining accuracy influence, causes the protection precision not high.At present, domestic on plant equipment such as Digit Control Machine Tool, petroleum system, military project system matching used low capacity low-voltage circuit breaker, be dependence on import substantially.
Summary of the invention
In order to overcome the deficiencies in the prior art, the utility model provides a kind of intelligent multifunction circuit breaker of low capacity.This circuit breaker can be realized electric leakage, overload, short circuit, phase shortage, under-voltage kinds of protect and demonstration.
The technical scheme that its technical problem that solves the utility model adopts is such: design a kind of intelligent multifunction circuit breaker, it comprises: the contact part, insulation crust, the assembly of operating machine, instrument transformer, direct current release and circuit control panel, it is characterized in that: described circuit control panel comprises: impedance transformer of Lian Jieing and anti-interference link successively, the integrator link, the signal processing links, door comparison amplifier link I, the power amplification output element, the door comparison amplifier link II that bypass connects before the integrator link and between the power amplification output element, the phase shortage link that bypass connects between instrument transformer and power amplification output element, branch road is connected in the electric leakage controlling unit of signal processing links, under-voltage controlling unit, and DC voltage-stabilizing link.
In the such scheme, described direct current release comprises: trace, and axle, fixedly the nut of trace and axle is installed in the fixed head on the trace, is installed on the coil in the fixed head, the sleeve pipe and cover, spring, packing ring and the magnet that are provided with in the middle of the coil; Described beam warp sleeve pipe, spring, packing ring and magnet pass from fixed head.
Intelligent multifunction circuit breaker of the present utility model has the following advantages compared with prior art:
1, this device can be realized multi-functional protection to power supply circuits or motor, and its defencive function has electric leakage, overload, short circuit, phase shortage, under-voltage and remote urgency to stop, and has especially increased electric leakage and under-voltage protection function.Realized that with potentiometer the rated current setting is adjustable, short circuit current is adjustable, and leakage current is adjustable.
2, this device upward is with memory to show, has overload demonstration, short circuit demonstration, electric leakage to show.
3, the ingenious design of executive component direct current release in this device makes it to have advantages such as volume is little, sucking coil power is little, simple in structure, inertia is little, action is fast.
4, this device forms one with Electronic Control plate, instrument transformer, adopts voltage source and main circuit current source to power simultaneously, and this is a supply power mode unique in the low capacity low-voltage circuit breaker.
Description of drawings
Below in conjunction with drawings and Examples, further specify the utility model.
Fig. 1 is the circuit block diagram of intelligent multifunction circuit breaker;
Fig. 2 is the structural representation of the direct current release in the intelligent multifunction circuit breaker;
Fig. 3 is the panel figure of intelligent multifunction circuit breaker;
Fig. 4 is the circuit theory diagrams of intelligent multifunction circuit breaker.
Embodiment
With reference to Fig. 1 and Fig. 4, the intelligent Multifunctional breaker of the utility model comprises: contact part, insulation crust, the assembly of operating machine, instrument transformer 12, direct current release L
Take offAnd circuit control panel, described circuit control panel comprises: impedance transformer of Lian Jieing and anti-interference link 1, integrator link 2, signal processing links 3, door comparison amplifier link I4, power amplification output element 10 successively, the door comparison amplifier link II5 that bypass connects before integrator link 2 and between the power amplification output element 10, the phase shortage link 6 that bypass connects between instrument transformer 12 and power amplification output element 10, branch road is connected in electric leakage controlling unit 7, the under-voltage controlling unit 8 of signal processing links 3, and DC voltage-stabilizing link 9.
Described impedance transformer and anti-interference link 1 comprise: comparison amplifier LM2, resistance R 6, electrochemical capacitor E2, wherein resistance R 6 goes into termination instrument transformer L5, diode D0, it goes out termination comparison amplifier LM2's+end, electrochemical capacitor E2 place resistance R 6 go into end and with capacitor C 2 ground connection afterwards in parallel; Described integrator link 2 comprises: comparison amplifier LM3, resistance R 7, R8, R9, R10, R11, electrochemical capacitor E3, potentiometer W4, voltage-stabiliser tube DW2, the wherein output of going into termination comparison amplifier LM2 of resistance R 7, it goes out termination comparison amplifier LM3's+end, resistance R 8, R11 connect the end of comparison amplifier LM3, electrochemical capacitor E3 is connected between the end and output of comparison amplifier LM3, and resistance R 9, R10, potentiometer W4 series connection form branch road and be connected between resistance R 8 and the R11; Described signal processing links 3 comprises: resistance R 13, R14, light-emitting diode D5, electrochemical capacitor E9, and wherein resistance R 13, light-emitting diode D5 series connection back and resistance R 14, electrochemical capacitor E9 are in parallel; Described door comparison amplifier link I4 comprises: comparison amplifier LM4, resistance R 15, R16, R17, R18, wherein resistance R 15 be connected in comparison amplifier LM4+end, resistance R 16, R18 are connected in the end of comparison amplifier LM4; Described door comparison amplifier link II 5 comprises: comparison amplifier LM6, resistance R 31, R32, R33, R34, R35, potentiometer W5, capacitor C 6, diode D15, the output of going into termination comparison amplifier LM2 of resistance R 34 wherein, it goes out to hold to be connected in comparison amplifier LM6's+end, resistance R 35 is connected in comparison amplifier LM6's+end and output between, capacitor C 6 is connected between the end and output of comparison amplifier LM6, resistance R 33 is from resistance R 31, potentiometer W5, obtain the end that voltage is connected in comparison amplifier LM6 in the branch road that resistance R 32 series connection form, the output of comparison amplifier LM6 connects diode D15; Described phase shortage link 6 comprises: triode BG1, BG2, BG3, resistance R 19, R20, R21, electrochemical capacitor E6, E7, E8 and diode D6, D7, D8, and wherein resistance, electrochemical capacitor are connected between the base stage and collector electrode of triode; Described electric leakage controlling unit 7 comprises: comparison amplifier LM 1, resistance R 1, R2, R3, R4, R5, potentiometer W1, W2, capacitor C 1, electrochemical capacitor E1, diode D1, D2, light-emitting diode D3, diode D1 wherein, resistance R 1, R2, electrochemical capacitor E1 is connected in comparison amplifier LM1's+end, resistance R 3, potentiometer W1 series connection back and capacitor C 1 are connected between the end and output of comparison amplifier LM1, resistance R 5, potentiometer W2 is connected in the end of comparison amplifier LM1, diode D2 is connected in the output of comparison amplifier LM1, light-emitting diode D3, resistance R 4 series connection form the output that branch road is connected to comparison amplifier LM1; Described under-voltage controlling unit 8 comprises: comparison amplifier LM5, resistance R 22, R23, R24, potentiometer W3, electrochemical capacitor E13, diode D9, light-emitting diode D16, wherein resistance R 22 be connected in comparison amplifier LM5+end, potentiometer W3 is connected in the end of comparison amplifier LM5, electrochemical capacitor E13 is connected between the end and output of comparison amplifier LM5, resistance R 24, light-emitting diode D16 series connection form the output that branch road is connected in comparison amplifier LM5, are connected to the output of diode D2 and comparison amplifier LM5 after resistance R 23, the diode D9 series connection; Described DC voltage-stabilizing link 9 comprises: the filter circuit that resistance R 12, capacitor C 3, C4, electrochemical capacitor E4, E5, voltage-stabiliser tube DW1 form, and three terminal regulator provides burning voltage+12V; Described power amplification output element 10 comprises: resistance R 26, R27, capacitor C 5, electrochemical capacitor E11, diode D11, controllable silicon SCR, wherein be connected in an end of direct current release L off-line circle after diode D11, resistance R 26 series connection, the other end of coil is connected in the anode of controllable silicon SCR, resistance R 27, capacitor C 5 are connected in the control utmost point of controllable silicon SCR, and the negative electrode of controllable silicon SCR is connected in ground; Described instrument transformer 12 comprises: zero-sequence transformer L
0, power transformer L
1～L
3, signal instrument transformer L
4～L
6With phase shortage instrument transformer L
1'～L
3'.
Remote scram button K1 is set, in order to shutting off power in emergency use before the described power amplification output element 10.
Before the described instrument transformer 12 test button K is set.Every phase current takes out from instrument transformer, both can a phase one test mutually, also can test simultaneously by three-phase, guarantees A, B, C three-phase protective characteristic unanimity.
The output of described impedance transformer and anti-interference link 1 connects digital display meter, is used for big slightly capacity low pressure circuit breaker.
The operation principle of circuit breaker of the present utility model is:
Overload protection route:, enter impedance transformer 1 output voltage by anti-interference element, when this voltage U when circuit breaker produces voltage by electric current in instrument transformer 12 outputs
λ＞U
WSetting voltage, integrator 2 beginning integrations, integration time constant τ=RC, U
λ＞＞U
WIntegration rises fast more, when the integration signal passes through signal processing links 3, makes signal more stable, as this signal U
News 1＞U=8V, door comparison amplifier I4 exports high level, triggers power amplifier 10, controllable silicon SCR conducting, direct current release L
Take offAdhesive promotes interlocking gear, and circuit breaker is opened.
The short-circuit protection route: when the rated current of circuit breaker by 8-12 times, the bigger voltage of output enters impedance transformer 1 by anti-interference element on instrument transformer 12, and output higher voltage U is short to enter door comparison amplifier II5, works as U
Short＞U
W1(U5＞U6) amplifier is exported high level, promotes power amplifier 10, direct current release L
Take offBy big electric current, the interlocking gear action, circuit breaker is opened.
Open-phase protection route: when the circuit breaker three phase supply, when lacking a phase current, at instrument transformer L
1, L
2, L
3Lack a phase current, phase shortage link 6 output high level, phase failure indicator light is bright, promotes power amplifier 10, and direct current release L is by big electric current, and interlocking gear moves, and circuit breaker is opened.
Electric leakage control route: specified residue operating current scope is set on W2 potentiometer panel, and 30MA～300MA～1A is adjustable, according to customer requirements, can carry out different selections.When W2 is set on the 50MA, in the loop of test button K, pass through 50MA, at zero-sequence transformer L
0Last output U
0＞U
W2When (the middle adjustable voltage of W2 current potential), ic chip D output high level (controlling unit of promptly leaking electricity 7 outputs) makes signal processing links 3 slowly rise to 8V, make door comparison amplifier I4 output high level, trigger power amplifier 10, controllable silicon SCR conducting, direct current release L
Take offAdhesive promotes interlocking gear, and circuit breaker is opened.
The under-voltage protection route: when line voltage just often, under-voltage controlling unit 8 no-outputs.When voltage drops to 75～35%U, U
DThe voltage follow line voltage descends, in under-voltage controlling unit 8, and W
3Potentiometer centre tap voltage also descends U
Mark＞U
W3, make under-voltage controlling unit that output be arranged, make signal processing links 3 slowly rise to 8V, door comparison amplifier I4 exports high level, triggers power amplifier 10, controllable silicon SCR conducting, direct current release L
Take offAdhesive promotes interlocking gear, and circuit breaker is opened.
Remote scram button route: remote scram button K1 is contained in the remote place from circuit breaker, when shutting off power in emergency, presses the K1 button immediately, triggers power amplifier 10, controllable silicon SCR conducting, direct current release L
Take offAdhesive promotes interlocking gear, and circuit breaker is opened.
With reference to Fig. 2, direct current release L takes off and comprises: trace 21, axle 26, the fixing nut 20 of trace 21 and axle 26, be installed in the fixed head 27 on the trace 21, be installed on the coil 28 in the fixed head 27, the sleeve pipe 22 that is provided with in the middle of the coil 28 and cover 23, spring 24, packing ring 29 and magnet 25; Axle 26 passes from fixed head 27 through sleeve pipe 22, spring 24, packing ring 29 and magnet 25.Axle 26 is connected with interlocking gear.
Direct current release L
Take offThe snap close position in the suction that generates through yoke and armature of the magnetic flux flow that produces of magnet just in time overcome the power that spring produces, make armature be in attracting state (promptly not trip status).When in the coil electric current being arranged, produce the magnetic flux that offsets with magnet, make the generation release movement.When resetting, circuit breaker closes a floodgate again, by trace, makes armature shift to the snap close direction.Electronic trip unit generally adopts voltage fed; for example: three-phase or two phase half-wave rectification step-down filtering power supply, in Multifunctional breaker, under three phase mains ground connection or serious short-circuit condition; line voltage descends rapidly, might miss one's aim by short-circuit protection function.The utility model designs small transformers step-down summation current transformer herein and powers simultaneously, has ensured the realization of short-circuit protection function.
With reference to Fig. 3, the panel of Multifunctional breaker of the present utility model is provided with: digital display meter 31, electric leakage indicator light 32, phase shortage indicator light 33, electric leakage adjustable current 34, test button 35, overload adjustable current 36, short circuit adjustable current 37, overload light 38.
In the reality, can utilize in existing low-voltage circuit breaker DZ20L-160,250,400 products and remove double-metal sheet type thermal release device and magnetic trip gear, increase by 6 of instrument transformers, 1 of zero-sequence transformer, 1 of 1 of direct current release and circuit control panel promptly become circuit breaker of the present utility model.
Claims (6)
1, a kind of intelligent multifunction circuit breaker, it comprises: the contact part, insulation crust, the assembly of operating machine, instrument transformer, direct current release and circuit control panel, it is characterized in that described circuit control panel comprises: impedance transformer of Lian Jieing and anti-interference link successively, the integrator link, the signal processing links, door comparison amplifier link I, the power amplification output element, the door comparison amplifier link II that bypass connects before the integrator link and between the power amplification output element, the phase shortage link that bypass connects between instrument transformer and power amplification output element, branch road is connected in the electric leakage controlling unit of signal processing links, under-voltage controlling unit, and DC voltage-stabilizing link.
2, intelligent multifunction circuit breaker according to claim 1, it is characterized in that described direct current release comprises: trace, axle, fixedly trace with the axle nut, be installed in the fixed head on the trace, be installed on the coil in the fixed head, the sleeve pipe and cover, spring, packing ring and the magnet that are provided with in the middle of the coil; Described beam warp sleeve pipe, spring, packing ring and magnet pass from fixed head.
3, intelligent multifunction circuit breaker according to claim 1, it is characterized in that described impedance transformer and anti-interference link comprise: comparison amplifier LM2, resistance R 6, electrochemical capacitor E2, wherein resistance R 6 goes into termination instrument transformer L5, diode D0, it goes out termination comparison amplifier LM2's+end, electrochemical capacitor E2 place resistance R 6 go into end and with capacitor C 2 ground connection afterwards in parallel; Described integrator link comprises: comparison amplifier LM3, resistance R 7, R8, R9, R10, R11, electrochemical capacitor E3, potentiometer W4, voltage-stabiliser tube DW2, the wherein output of going into termination comparison amplifier LM2 of resistance R 7, it goes out termination comparison amplifier LM3's+end, resistance R 8, R11 connect the end of comparison amplifier LM3, electrochemical capacitor E3 is connected between the end and output of comparison amplifier LM3, and resistance R 9, R10, potentiometer W4 series connection form branch road and be connected between resistance R 8 and the R11; Described signal processing links comprises: resistance R 13, R14, light-emitting diode D5, electrochemical capacitor E9, and wherein resistance R 13, light-emitting diode D5 series connection back and resistance R 14, electrochemical capacitor E9 are in parallel; Described door comparison amplifier link I comprises: comparison amplifier LM4, resistance R 15, R16, R17, R18, wherein resistance R 15 be connected in comparison amplifier LM4+end, resistance R 16, R18 are connected in the end of comparison amplifier LM4; Described door comparison amplifier link II comprises: comparison amplifier LM6, resistance R 31, R32, R33, R34, R35, potentiometer W5, capacitor C 6, diode D15, the output of going into termination comparison amplifier LM2 of resistance R 34 wherein, it goes out to hold to be connected in comparison amplifier LM6's+end, resistance R 35 is connected in comparison amplifier LM6's+end and output between, capacitor C 6 is connected between the end and output of comparison amplifier LM6, resistance R 33 is from resistance R 31, potentiometer W5, obtain the end that voltage is connected in comparison amplifier LM6 in the branch road that resistance R 32 series connection form, the output of comparison amplifier LM6 connects diode D15; Described phase shortage link comprises: triode BG1, BG2, BG3, resistance R 19, R20, R21, electrochemical capacitor E6, E7, E8 and diode D6, D7, D8, and wherein resistance, electrochemical capacitor are connected between the base stage and collector electrode of triode; Described electric leakage controlling unit comprises: comparison amplifier LM1, resistance R 1, R2, R3, R4, R5, potentiometer W1, W2, capacitor C 1, electrochemical capacitor E1, diode D1, D2, light-emitting diode D3, diode D1 wherein, resistance R 1, R2, electrochemical capacitor E1 is connected in comparison amplifier LM1's+end, resistance R 3, potentiometer W1 series connection back and capacitor C 1 are connected between the end and output of comparison amplifier LM1, resistance R 5, potentiometer W2 is connected in the end of comparison amplifier LM1, diode D2 is connected in the output of comparison amplifier LM1, light-emitting diode D3, resistance R 4 series connection form the output that branch road is connected to comparison amplifier LM1; Described under-voltage controlling unit comprises: comparison amplifier LM5, resistance R 22, R23, R24, potentiometer W3, electrochemical capacitor E13, diode D9, light-emitting diode D16, wherein resistance R 22 be connected in comparison amplifier LM5+end, potentiometer W3 is connected in the end of comparison amplifier LM5, electrochemical capacitor E13 is connected between the end and output of comparison amplifier LM5, resistance R 24, light-emitting diode D16 series connection form the output that branch road is connected in comparison amplifier LM5, are connected to the output of diode D2 and comparison amplifier LM5 after resistance R 23, the diode D9 series connection; Described DC voltage-stabilizing link comprises: the filter circuit that resistance R 12, capacitor C 3, C4, electrochemical capacitor E4, E5, voltage-stabiliser tube DW1 form, and three terminal regulator provides burning voltage+12V; Described power amplification output element comprises: resistance R 26, R27, capacitor C 5, electrochemical capacitor E11, diode D11, controllable silicon SCR wherein are connected in direct current release L after diode D11, resistance R 26 series connection
Take offOne end of coil, the other end of coil is connected in the anode of controllable silicon SCR, and resistance R 27, capacitor C 5 are connected in the control utmost point of controllable silicon SCR, and the negative electrode of controllable silicon SCR is connected in ground; Described instrument transformer has zero-sequence transformer L
0, power transformer L
1～L
3, signal instrument transformer L
4～L
6With phase shortage instrument transformer L
1'～L
3'.
4,, it is characterized in that before the described power amplification output element remote scram button K1 being set according to claim 1 or 3 described intelligent multifunction circuit breakers.
5, according to claim 1 or 3 described intelligent multifunction circuit breakers, it is characterized in that before the described instrument transformer test button K being set.
6,, it is characterized in that the output of described impedance transformer and anti-interference link connects digital display meter according to claim 1 or 3 described intelligent multifunction circuit breakers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03203647 CN2596541Y (en) | 2003-02-09 | 2003-02-09 | Intelligent multifunction breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03203647 CN2596541Y (en) | 2003-02-09 | 2003-02-09 | Intelligent multifunction breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2596541Y true CN2596541Y (en) | 2003-12-31 |
Family
ID=33753846
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03203647 Expired - Fee Related CN2596541Y (en) | 2003-02-09 | 2003-02-09 | Intelligent multifunction breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2596541Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106229937A (en) * | 2016-08-19 | 2016-12-14 | 天津市百利电气有限公司 | Have the chopper of ground protection and creepage protection function concurrently |
-
2003
- 2003-02-09 CN CN 03203647 patent/CN2596541Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106229937A (en) * | 2016-08-19 | 2016-12-14 | 天津市百利电气有限公司 | Have the chopper of ground protection and creepage protection function concurrently |
| CN106229937B (en) * | 2016-08-19 | 2018-08-21 | 天津市百利电气有限公司 | Have the breaker of ground protection and creepage protection function concurrently |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |