CN201478785U - Multifunctional zero interruption leakage protective switch - Google Patents
Multifunctional zero interruption leakage protective switch Download PDFInfo
- Publication number
- CN201478785U CN201478785U CN2009203027532U CN200920302753U CN201478785U CN 201478785 U CN201478785 U CN 201478785U CN 2009203027532 U CN2009203027532 U CN 2009203027532U CN 200920302753 U CN200920302753 U CN 200920302753U CN 201478785 U CN201478785 U CN 201478785U
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- circuit
- zero
- input
- breaker
- earth leakage
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Abstract
Disclosed is a zero interruption leakage protective switch capable of being used in a single-phase alternative current 220V power source. When a zero line is disconnected or input ends L and N of the protective switch are in error connection inversely with a live wire and a zero line of the power source, a leakage protective device can timely detect output control signals to turn off a failure power source. The leakage protective switch comprises a zero interruption protective circuit C, a leakage protective circuit B and a releasing executing circuit A, an output end of the leakage protective circuit B is connected with an input end of the releasing executing circuit A, an input end of the zero interruption protective circuit C is connected with an X point of the zero line N while the other end of the zero interruption protective circuit C is connected with a protective grounding end PE, and an output end of the zero interruption protective circuit C is connected with a Y point of the input end of the releasing executing circuit A. When the zero line is disconnected due to accidental reasons, voltage of the input end N of the multifunctional zero interruption leakage protective switch is led to be increased, a neon tube indicating lamp HL2 is lightened to give out indicating signals to drive controllable silicon BT to be conducted, and simultaneously an electromagnetic releasing coil LY is electrified to cut off the power source, thereby achieving the purposes of protecting persons and realizing safety of electric equipment.
Description
Technical field:
The present invention relates to a kind of multi-functional disconnected zero earth leakage circuit-breaker that is installed on the low-voltage circuit, also can play the protection switch that overload, short circuit, electric leakage and (zero line, live wire) connect defencive function such as anti-when relating in particular to a kind of single phase alternating current power supply zero line open failure.
Background technology:
Earth leakage circuit-breaker extensively is used in fields such as industry, residential houses, and when short circuit, overload, electric leakage appearred in circuit, earth leakage circuit-breaker can stipulated rapid disengagement failure power supply, the protection person and power consumption equipment safety in the extremely short time.The earth leakage circuit-breaker of residential houses use at present is exactly single the earth leakage circuit-breaker that single phase alternating current (A.C.) 220V power supply is used the most widely; single earth leakage circuit-breaker is to be bolted together by single killer switch and earth leakage protective device mechanical chain to constitute; single earth leakage circuit-breaker has two input L; N and two output L1; N1; and input N and output N1 are straight-through syndeton; the common ground of single earth leakage circuit-breaker is: the input L of killer switch is connected with the live wire of power supply; output L1 is connected with load; the input N of earth leakage protective device is connected with the zero line of power supply; output N1 is connected with load; the accessory power supply of single earth leakage circuit-breaker adopts single-phase 220V power supply; one terminates to the output L1 of killer switch; the other end is received the output N1 of earth leakage protective device; accessory power supply is also powered when promptly needing only the killer switch connection; earth leakage protective device is the energy operate as normal just; if during the chance encounter neutral line break; and another root live wire continues power supply; then earth leakage protective device is with regard to cisco unity malfunction; if when at this moment the security incident of the person or equipment occurring on the circuit that continues power supply, single earth leakage circuit-breaker does not just have urgent protective effect yet.If single earth leakage circuit-breaker input termination inverse time; be on the zero line of input L misconnection power supply of killer switch, on the live wire of the input N misconnection power supply of earth leakage protective device; if when at this moment the security incident of the person or equipment occurring on Gong Dian the circuit; though earth leakage protective device action; killer switch is broken as zero line; because live wire is connected on the input terminal N of earth leakage protective device; input terminal N is connected and can not disconnects for straight-through with lead-out terminal N1, so single earth leakage circuit-breaker does not have urgent protective effect yet.Existing single earth leakage circuit-breaker all exists aforesaid security incident hidden danger.
Summary of the invention:
At the deficiencies in the prior art; the present invention aims to provide a kind of earth leakage circuit-breaker that can use in single phase alternating current (A.C.) 220V power supply; when wherein zero line disconnects or the input L of switch and the live wire and the zero line mistake of N and power supply connect inverse time; can in time detect and export the device that control signal is cut off the electricity supply, promptly multi-functional disconnected zero earth leakage circuit-breaker is called for short protection switch.
To achieve these goals, the present invention is by the following technical solutions:
A kind of multi-functional disconnected zero earth leakage circuit-breaker comprises disconnected zero protective circuit C (part in the empty frame of Fig. 2), leakage protection circuit B and dropout executive circuit A three parts composition.Multi-functional disconnected zero earth leakage circuit-breaker has three input L, N, PE and two output L1, N1; and input N and output N1 are straight-through syndeton; input L, N, the PE of multi-functional disconnected zero earth leakage circuit-breaker are connected with live wire, zero line and the protection ground wire of power supply, and output L1, N1 are connected with load.The output of leakage protection circuit B connects the input of dropout executive circuit A, and the input of disconnected zero protective circuit C is connected with N end X point, the other end is connected with protective grounding PE, the input Y point of output dropout executive circuit A is connected.It is characterized in that:
Dropout executive circuit A is made of by mechanical chain killer switch K1, electromagnetic trip coil LY.
Leakage protection circuit B forms the leak(age) test circuit by test switch K2 and resistance R 3, and zero sequence current mutual inductor B1 and drive circuit DL form the detection of electrical leakage drive circuit, and common combination forms.
Disconnected zero protective circuit C forms disconnected zero by resistance R 1, neon tube HL1, the capacitor C 1 of high impedance photoelectrical coupler importation with neon indicator HL2 and detects display circuit; the photo resistance RL of high impedance photoelectrical coupler output and resistance R 2, capacitor C 2 and controllable silicon BT form disconnected zero control circuit; piezo-resistance RV and diode D1 form overvoltage crowbar, and common combination forms.
New ground protection terminals P E of the many increases of the input of described multi-functional disconnected zero earth leakage circuit-breaker and single common earth leakage circuit-breaker, an end of the input of disconnected zero protective circuit C is connected with the X point, and the other end is connected with the PE end.
The high impedance photoelectrical coupler importation of described multi-functional disconnected zero earth leakage circuit-breaker is composed in series by current-limiting resistance R1, neon tube HL1 and isolation capacitance C1, and output is formed for photo resistance RL.
The technological progress that the present invention obtains:
When 1, the present invention has the disconnection of protector input zero line, can in time cut off the electricity supply, can not leave potential safety hazard, prevent unexpected the generation effectively.
2, the present invention has zero line and the live wire mistake connects inverse time, can in time cut off the electricity supply, and can not leave potential safety hazard, prevents unexpected the generation effectively.
3, the present invention is simple in structure, and volume is little, and K switch 1 is a single killer switch, and K switch 1 can also change two or three mains switches or killer switch into, constitutes a new multi-functional disconnected zero earth leakage circuit-breaker.
4, disconnected zero testing circuit of the present invention is made up of the importation of high impedance photoelectrical coupler, has very high impedance, in M Ω level, is equivalent to open a way in less than the 500V circuit exchanging AC220V, AC380V and direct current.
Description of drawings:
Fig. 1, shown in the multi-functional disconnected zero earth leakage circuit-breaker block diagram of the present invention.
Fig. 2, shown in the multi-functional disconnected zero leakage protection switch circuit schematic diagram of the present invention.
Fig. 3, shown in the Facad structure schematic diagram of multi-functional disconnected zero earth leakage circuit-breaker of the present invention.
Fig. 4, be the multi-functional disconnected zero earth leakage circuit-breaker side structure schematic diagram of the present invention shown in Figure 3.
Embodiment:
The present invention is further described below in conjunction with drawings and Examples.
Embodiment 1: as shown in Figure 1 and Figure 2, multi-functional disconnected zero earth leakage circuit-breaker comprises disconnected zero protective circuit C, leakage protection circuit B and dropout executive circuit A three parts composition.The output of leakage protection circuit B connects the input of dropout executive circuit A, and the input of disconnected zero protective circuit C is connected with the X point of zero line N, the other end is connected with protective earthing line PE, output is connected with the input Y point of dropout executive circuit A.The importation resistance R 1 of high impedance photoelectrical coupler, neon tube HL1, capacitor C 1 and the output photo resistance RL of neon indicator HL2 series connection, high impedance photoelectrical coupler are connected with the control utmost point of resistance R 2, capacitor C 2 and controllable silicon BT; the negative electrode of controllable silicon BT is connected with protective grounding with piezo-resistance RV, resistance R 2, capacitor C 2 with after neon indicator HL2 links to each other again; the anode of controllable silicon (BT) is connected with diode D1 with photo resistance RL, and the other end of the other end of piezo-resistance RV and diode D1 is connected with the Y point.
Wherein, the input L of multi-functional disconnected zero earth leakage circuit-breaker; N; the live wire of PE and power supply; zero line is connected with the protection ground wire; the alternating current 220V voltage of input is through the L1 of multi-functional disconnected zero earth leakage circuit-breaker; the N1 end outputs to load; the input N of at this moment multi-functional disconnected zero earth leakage circuit-breaker; PE is that the zero line and the protection ground wire of power supply is equipotential; cross-over connection is in N; the neon tube HL1 and the neon indicator HL2 of the disconnected zero testing circuit high impedance photoelectrical coupler at PE two ends all do not work; the RL of high impedance photoelectrical coupler does not have output signal; controllable silicon BT still ends; electromagnetic trip coil LY does not have electric current to pass through, and killer switch is failure to actuate.Because when the zero line disconnection appears in accidental cause; the input N of multi-functional disconnected zero earth leakage circuit-breaker is through load or distributed capacitance coupling; the input N voltage of multi-functional disconnected zero protection switch is raise; N ≈ L ≈ alternating current 220V; cross-over connection this moment is in N; also there is alternating current 220V voltage at the neon tube HL1 of the multi-functional disconnected zero testing circuit high impedance photoelectrical coupler at PE two ends and the two ends of neon indicator HL2 and lights; send index signal; the disconnected zero-signal of the photo resistance RL of high impedance photoelectrical coupler output simultaneously; drive controllable silicon BT conducting; the electromagnetic trip coil gets simultaneously; killer switch K1 disconnects, and cuts off the electricity supply, and realizes the protection person and power consumption equipment purpose of safety.Dotted line inside is divided into the circuit part of disconnected zero protective circuit C.
Fig. 3 is the Facad structure schematic diagram of multi-functional disconnected zero earth leakage circuit-breaker of the present invention; Fig. 4 is the multi-functional disconnected zero earth leakage circuit-breaker side structure schematic diagram of the present invention shown in Figure 3; 1 turns round for the operation of killer switch K1 among the figure; 2 for the reset button of dropout solenoid; K2 is the leak(age) test push-button switch; HL2 is disconnected zero neon indicator, and L, N, PE are the input terminal of multi-functional disconnected zero earth leakage circuit-breaker, and L1, N1 are the lead-out terminal of multi-functional disconnected zero earth leakage circuit-breaker.
Claims (5)
1. multi-functional disconnected zero earth leakage circuit-breaker; comprise leakage protection circuit; disconnected zero protective circuit and dropout executive circuit three parts are formed; multi-functional disconnected zero earth leakage circuit-breaker has three input (L; N; PE) and two output (L1; N1); input (L; N; PE) respectively with the live wire of power supply; zero line is connected with the protection ground wire; output (L1; N1) be connected with load respectively; it is characterized in that: the output of leakage protection circuit connects input (Y) point of dropout executive circuit, and the input of disconnected zero protective circuit is connected with (X) point; the other end is connected with protective grounding (PE); output is connected to input (Y) point of dropout executive circuit.
2. multi-functional disconnected zero earth leakage circuit-breaker as claimed in claim 1; it is characterized in that: described leakage protection circuit is made up of leak(age) test circuit, zero sequence current mutual inductor B and amplification driving circuit DL; the input of amplification driving circuit DL is connected with zero sequence current mutual inductor B respectively, output is connected with input (Y) point of dropout executive circuit, and the other end is connected with (X) point of zero line side (N1).
3. multi-functional disconnected zero earth leakage circuit-breaker as claimed in claim 1; it is characterized in that: described disconnected zero protective circuit is made up of high impedance solid-state relay HZ-SSR and diode D1; input (1) pin of high impedance solid-state relay HZ-SSR is connected with (X) point; the other end (3) pin is connected with (Y) point by diode D1, and (2,4) pin is connected with protective earthing (PE) end.
4. multi-functional disconnected zero earth leakage circuit-breaker as claimed in claim 1, it is characterized in that: described dropout executive circuit is made of by mechanical chain mains switch K1 and electromagnetic trip coil LY.
5. multi-functional disconnected zero earth leakage circuit-breaker as claimed in claim 1 is characterized in that: the input of described multi-functional disconnected zero earth leakage circuit-breaker and the common earth leakage circuit-breaker protective earthing terminals (PE) that increase more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203027532U CN201478785U (en) | 2009-04-30 | 2009-04-30 | Multifunctional zero interruption leakage protective switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203027532U CN201478785U (en) | 2009-04-30 | 2009-04-30 | Multifunctional zero interruption leakage protective switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201478785U true CN201478785U (en) | 2010-05-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009203027532U Expired - Fee Related CN201478785U (en) | 2009-04-30 | 2009-04-30 | Multifunctional zero interruption leakage protective switch |
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| Country | Link |
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| CN (1) | CN201478785U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104701835A (en) * | 2015-02-26 | 2015-06-10 | 韦明肯 | NL input stipulation comprehensive residual-current circuit breaker |
-
2009
- 2009-04-30 CN CN2009203027532U patent/CN201478785U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104701835A (en) * | 2015-02-26 | 2015-06-10 | 韦明肯 | NL input stipulation comprehensive residual-current circuit breaker |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100519 Termination date: 20110430 |