CN2657186Y - Fire-proof circuit breaker for using electricity - Google Patents
Fire-proof circuit breaker for using electricity Download PDFInfo
- Publication number
- CN2657186Y CN2657186Y CN 200320108252 CN200320108252U CN2657186Y CN 2657186 Y CN2657186 Y CN 2657186Y CN 200320108252 CN200320108252 CN 200320108252 CN 200320108252 U CN200320108252 U CN 200320108252U CN 2657186 Y CN2657186 Y CN 2657186Y
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- circuit
- protection
- breaker
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Abstract
The utility model discloses an electric fireproof circuit breaker, which comprises a circuit breaker, an electromagnetic over-voltage, a leakage-action release, a zero sequence current transformer, an over-voltage protection circuit, a trigger execution circuit, and an experiment circuit. The utility model is characterized in that the utility model also comprises a thermosensitive automatic switch, an electromagnetic short circuit current action release and a leakage protection circuit. The utility model also comprises a misoperation-preventing circuit. By adopting the electronic circuit to realize over-voltage and leakage protection, short circuit protection and overflow protection, the utility model has the advantages of integrating the functions of over-voltage protection, overflow protection, short circuit protection and leakage protection into a whole, effectively preventing the electric fire caused by various reasons, satisfying the normal start and operation of various electric device, safety and reliability; the utility model is applicable for being used in the circuit with low-voltage 38 V and in the control and protection of equipment, and is also applicable for match loading medium and small (micro) circuit breaker.
Description
Technical field
The utility model relates to electric equipment, especially relates to a kind of electricity consumption fireproof breaker that is used to prevent to cause because of various factors electrical fire.
Background content
Circuit breaker has been widely used in the middle of daily life, the production, to protecting with electric line, equipment and utensil, preventing that the generation of electric accident and electrical fire from playing an important role.Selected control apparatus in the employed ammeter box in current " two nets " engineering of transforming that Every household has an ammeter; exhausted too many number configuration be that circuit breaker or switch or plug-in strip are as power supply terminal; circuit breaker has has only the single defencive function of overcurrent; though what have has installed creepage protection function additional but has not had over-voltage protection function; switch also has only the single defencive function of electric leakage mostly; and plug-in strip has only the single defencive function of overcurrent fuse failure; no overvoltage; creepage protection function, these are configured in can produce in the actual motion uses electric line such as burning; equipment and utensil; cause electrical fire; cause accidents such as country and user's property loss.These control apparatuses that are configured in the ammeter box produce following accident in actual motion: having caused because of neutral bus misconnection, overlap joint, disconnection, loose contact of no overvoltage protection, disconnected not switch power supply and burn power consumption equipment, utensil, serious cause electrical fire, caused user's loss; Having caused because of burning power consumption equipment, utensil, circuit, transformer with the disconnected not switch power supply of electric line, equipment, utensil, overcurrent, short circuit of no overcurrent protection serious caused electrical fire, caused user's loss; No earth leakage protective having caused because of subscriber's line, equipment, ageing of insulation, damaged usefulness electrification and the electrical fire accident that is caused; the electric shock accidents that causes when reaching minority high residential building user one a fiery ground (the connecing running water pipe) stealing that stealing produced loss and water and maintenance water pipe.
Summary of the invention
The purpose of this utility model is to provide a kind of and integrates multiple functions such as overvoltage protection, overcurrent protection, short-circuit protection and earth leakage protective, can effectively prevent to cause electrical fire, can satisfy various power consumption equipments, the operation of utensil normal starting, safe and reliable electricity consumption fireproof breaker again because of a variety of causes.
The purpose of this utility model is achieved in that the utility model comprises circuit breaker, electromagnetic type overvoltage and electric leakage action release, zero sequence current mutual inductor, excess voltage protection, triggering executive circuit and hookup, and feature is also to comprise overcurrent deferred action heat-sensitive automatic circuit-breaker, electromagnetic type short circuit current action release and leakage protection circuit.
The utility model also comprises and prevents error actuating circuit.
The utility model by circuit breaker, overcurrent deferred action heat-sensitive automatic circuit-breaker, electromagnetic type short circuit current action release, electromagnetic type overvoltage and electric leakage action release, zero sequence current mutual inductor, excess voltage protection, leakage protection circuit, triggering executive circuit, prevent that error actuating circuit and hookup from forming, its adopts electronic technology realization overvoltage, earth leakage protective, short-circuit protection and overcurrent protection.Overcurrent long delay, short time delay action protection adopt reliable and stable overcurrent deferred action heat-sensitive automatic circuit-breaker (hot three metal strips); electromagnetic release (electromagnetic type short circuit current action release, electromagnetic type overvoltage and electric leakage action release) is adopted in the protection of short circuit instantaneous operation; thereby the mechanical action of control strong power part, the open failure power supply.It adjusts combination with operating value, the operating characteristics of every defencive function, plays the backup protection effect organic coordination.Its art designs is reasonable; it is strong to suppress induction reactance equipment starting surge current ability; stable and reliable for performance; overvoltage, electric leakage, short-circuit protection quick action (all less than 0.1 second), stable work in work, protection reliable in action; safe in utilization; the disjunction trouble power can effectively be protected operating electric line, equipment, the utensil used fast, prevents the generation of electrical fire accident.Therefore the utlity model has multiple functions such as integrating overvoltage protection, overcurrent protection, short-circuit protection and earth leakage protective, can effectively prevent to cause electrical fire, can satisfy various power consumption equipments, the operation of utensil normal starting, safe and reliable advantage again because of a variety of causes; be applicable to the control protection of the following circuit of low pressure 380V, equipment, be suitable for equipped middle or small (little) type circuit breaker.
Description of drawings
Fig. 1 is circuit theory diagrams of the present utility model.
Embodiment
Below in conjunction with embodiment and contrast accompanying drawing the utility model is described in further detail.
The utility model by circuit breaker Q F, electromagnetic type overvoltage and electric leakage action release TQ, overcurrent deferred action heat-sensitive automatic circuit-breaker KH, electromagnetic type short circuit current action release ATQ, zero sequence current mutual inductor ZCT, leakage protection circuit, prevent that error actuating circuit, excess voltage protection, triggering executive circuit and hookup from forming.
Leakage protection circuit is made up of zero sequence current mutual inductor ZCT, capacitor C 1, C2, resistance R 3, adjustable resistance RP2, switching diode DS6, DS5.
Prevent that error actuating circuit from being made up of piezo-resistance RV, thyristor SCR, adjustable resistance RP2, capacitor C 1.
Excess voltage protection is made up of resistance R 1, R2, adjustable resistance RP1, polar capacitor CD, voltage stabilizing didoe DW.
Trigger executive circuit and be made up of thyristor SCR, rectifier diode D1～D4, electromagnetic release TQ, four rectifier diode D1～D4 form rectification circuit.
Hookup is made up of resistance R S and switch Q.
Two inputs of overcurrent deferred action heat-sensitive automatic circuit-breaker KH with connect the 220V civil power after circuit breaker Q F connects, two outputs with pass zero sequence current mutual inductor ZCT after electromagnetic type short circuit current action release ATQ connects and meet load L; The T1 end ground connection of the secondary coil L1 of zero sequence current mutual inductor ZCT, the public connecting end of T2 terminating resistor R3 and capacitor C 2, the other end ground connection of capacitor C 2, the anode of another termination switching diode DS6 of resistance R 3, the negative electrode of switching diode DS6 connects the control utmost point of thyristor SCR, and the two ends of capacitor C 1 are connected in parallel between the negative electrode and ground of diode DS6, and adjustable resistance RP2 is in parallel with capacitor C 1, the anode of switching diode DS5 connects the anode of voltage stabilizing didoe DW, and negative electrode connects the control utmost point of thyristor SCR.
1 pin, the negative electrode of the diode D4 in the rectification circuit and the common port of diode D1 anode of the termination electromagnetic type short circuit current action release ATQ output of piezo-resistance RV, 2 pin of another termination electromagnetic type short circuit current action release ATQ output, promptly piezo-resistance RV is connected in parallel between two output 1 pin, 2 pin of electromagnetic type short circuit current action release ATQ.
Preventing that error actuating circuit from plaing prevents misoperation performance (anti-lightning strike, withstand shock voltage 6000～8000V is failure to actuate) effect under the surge voltage effect.
Regulate adjustable resistance RP1, select the voltage stabilizing didoe DW of different voltage stabilizing values for use, can obtain the different specified overvoltage instantaneous operation protection value of required setting respectively.
When load L produces electric leakage (residue) electric current, zero sequence current mutual inductor ZCT detects unsymmetrical current, secondary coil L1 produces induced voltage signal, through resistance R 3, switching diode DS6 the control utmost point to thyristor SCR, thyristor SCR triggers, electromagnetic type overvoltage and electric leakage action release TQ action, deenergization.Adjusting adjustable resistance RP2 can obtain different specified electric leakage (residue) the electric current instantaneous operation protection value of required setting respectively.The control utmost point that the negative electrode of switching diode DS5 is met thyristor SCR can prevent the ascending, descending fluctuation because of supply voltage, the fluctuation of the residual operating current value that influence has been adjusted and the misoperation that causes.
When producing overcurrent fault among the load L; by reliable and stable overcurrent deferred action heat-sensitive automatic circuit-breaker (hot three metal strips) KH through the specified overcurrent action protection value of having adjusted; the overcurrent value is produced the thermally-stabilised directional deformation of relative velocity; promote tripping mechanism; deenergization reaches the action protection that load over-current multiple, time is carried out relative long delay and time-delay (and time limit).When the short circuit current fault occurring among the load L; electromagnetic type short circuit current action release ATQ by the specified overcurrent multiple action protection value through adjusting promotes tripping mechanism, deenergization, reaches instantaneous (less than the 0.1 second) action protection to the suitable short circuit current of load.
Claims (2)
1, a kind of electricity consumption fireproof breaker, comprise circuit breaker (QF), electromagnetic type overvoltage and electric leakage action release (TQ), zero sequence current mutual inductor (ZCT), excess voltage protection, trigger executive circuit and hookup, it is characterized in that: also comprise overcurrent deferred action heat-sensitive automatic circuit-breaker (KH), electromagnetic type short circuit current action release (ATQ) and leakage protection circuit, two inputs of overcurrent deferred action heat-sensitive automatic circuit-breaker (KH) with connect the 220V civil power after circuit breaker (QF) is connected, two outputs with pass zero sequence current mutual inductor (ZCT) after electromagnetic type short circuit current action release (ATQ) is connected and connect load (L); Leakage protection circuit is by zero sequence current mutual inductor (ZCT); electric capacity (C1); (C2); resistance (R3); adjustable resistance (RP2); switching diode (DS6); (DS5) form; (T1) end ground connection of the secondary coil (L1) of zero sequence current mutual inductor (ZCT); (T2) public connecting end of terminating resistor (R3) and electric capacity (C2); the other end ground connection of electric capacity (C2); the anode of another termination switching diode (DS6) of resistance (R3); the negative electrode of switching diode (DS6) connects the control utmost point of thyristor (SCR); the two ends of electric capacity (C1) are connected in parallel between the negative electrode and ground of diode (DS6); adjustable resistance (RP2) is in parallel with electric capacity (C1); the anode of switching diode (DS5) connects the anode of voltage stabilizing didoe (DW), and negative electrode connects the control utmost point of thyristor (SCR).
2, electricity consumption fireproof breaker as claimed in claim 1, it is characterized in that: also comprise preventing error actuating circuit, prevent that error actuating circuit from being made up of piezo-resistance (RV), thyristor (SCR), adjustable resistance (RP2), electric capacity (C1), (1) pin, the negative electrode of the diode (D4) in the rectification circuit and the common port of diode (D1) anode of one termination electromagnetic type short circuit current action release (ATQ) output of piezo-resistance (RV), (2) pin of another termination electromagnetic type short circuit current action release (ATQ) output.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320108252 CN2657186Y (en) | 2003-11-18 | 2003-11-18 | Fire-proof circuit breaker for using electricity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320108252 CN2657186Y (en) | 2003-11-18 | 2003-11-18 | Fire-proof circuit breaker for using electricity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2657186Y true CN2657186Y (en) | 2004-11-17 |
Family
ID=34342602
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200320108252 Expired - Fee Related CN2657186Y (en) | 2003-11-18 | 2003-11-18 | Fire-proof circuit breaker for using electricity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2657186Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101964512A (en) * | 2010-11-05 | 2011-02-02 | 江苏省电力公司东台市供电公司 | Electric leakage protector with overvoltage protective device |
| CN103427392A (en) * | 2012-05-18 | 2013-12-04 | 中国长城计算机深圳股份有限公司 | Protective device for electric system |
-
2003
- 2003-11-18 CN CN 200320108252 patent/CN2657186Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101964512A (en) * | 2010-11-05 | 2011-02-02 | 江苏省电力公司东台市供电公司 | Electric leakage protector with overvoltage protective device |
| CN103427392A (en) * | 2012-05-18 | 2013-12-04 | 中国长城计算机深圳股份有限公司 | Protective device for electric system |
| CN103427392B (en) * | 2012-05-18 | 2016-03-02 | 中国长城计算机深圳股份有限公司 | A kind of electric system protection device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20090313 Address after: No. 3, Chen Jiaxiang, Yongye, Nanchang, Jiangxi, zip code: 330006 Co-patentee after: Nanchang Shengda Plastic Co., Ltd. Patentee after: Lu Qing Hua Address before: No. 3, Chen Jiaxiang, Yongye, Nanchang, Jiangxi, zip code: 330006 Co-patentee before: Nanchang Shengda Electric Power Development Co. Ltd. Patentee before: Lu Qing Hua |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20041117 Termination date: 20111118 |