CN1269170C - Leakage breaker - Google Patents
Leakage breaker Download PDFInfo
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- CN1269170C CN1269170C CN 02127356 CN02127356A CN1269170C CN 1269170 C CN1269170 C CN 1269170C CN 02127356 CN02127356 CN 02127356 CN 02127356 A CN02127356 A CN 02127356A CN 1269170 C CN1269170 C CN 1269170C
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- Prior art keywords
- elastic component
- circuit breaker
- residual current
- current circuit
- test
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H83/00—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
- H01H83/02—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by earth fault currents
- H01H83/04—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by earth fault currents with testing means for indicating the ability of the switch or relay to function properly
- H01H2083/045—Auxiliary switch opening testing circuit in synchronism with the main circuit
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H83/00—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
- H01H83/02—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by earth fault currents
- H01H83/04—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by earth fault currents with testing means for indicating the ability of the switch or relay to function properly
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Abstract
A ground-fault circuit interrupter of a simple structure and easy to assemble and adjust, can surely make an operation check without making the size larger, and will not have a protection coil damaged even if a test button is kept pushing at the operation check test. The ground-fault circuit interrupter is provided with a test circuit 41 passing dummy leak current to a zero-phase current transformer 36 with one end wound around the zero-phase current transfer 36 and the other end connected to a main circuit 30, a leakage test switch 42 connected in the test circuit 41 and making an operation check of a ground-fault circuit interrupter by putting on and off dummy leakage current flowing in the test circuit 41, and a series switch 46 connected in series with the leakage test switch 42 and put on and off according to on/off and trip operations oft the ground- fault circuit interrupter, and it is so arranged that dummy leakage current shall not flow in the test circuit 41 when the ground-fault circuit interrupter is in the off or trip state, even if the leakage test switch 42 is operated.
Description
Technical field
The present invention relates to residual current circuit breaker, the burn that relates in particular to trip coil in the confirming operation test of residual current circuit breaker prevents.
Background technology
Figure 13 shows that for example vertical view of the inner overview of traditional residual current circuit breaker shown in the Japanese kokai publication hei 5-342976 communique, Figure 14 shows that the stereogram of the leakage tests switch periphery formation of the residual current circuit breaker that Figure 13 is shown, Figure 15 shows that circuit diagram residual current circuit breaker and the main circuit connection status of Figure 13.
In Figure 13 and Figure 14,1 is Shell of circuit breaker, and 2 is power supply side terminal portion, and 3 is load side terminal portion, 4 is moving element, 5 is the cross bar that connects the moving element of each utmost point, and 6 is switching mechanism portion, and 7 is the trip(ping) bar of switching mechanism portion 6,8 is the electromagnetism trip gear, 9 is mount pad, and 10 is the leakage tests switch, is made of testing button 11, test spring 12, flat spring 13.
14 for being installed on the mount pad 9, be the actuation element that fulcrum rotates with pin 15, is driven and the pressing plate spring when residual current circuit breaker disconnects and trip, and test spring 12 is not contacted with flat spring 13.16 are and the upper surface butt of cross bar 5 and the actuating strut that moves up and down by cross bar 5, are connected with actuation element 14 by pin 17.
In Figure 15,18 is main circuit, 19 flow to the make and break contact of the electric current of main circuit 18 for switch, 20 for being located at the load-side of make and break contact 19, detect the zero sequence converter of the leakage current of main circuit 18,21 is to be connected with the outlet side of zero sequence converter 20, the amplifier of the signal that amplification is measured by zero sequence converter 20,22 for making the controllable silicon of conducting control according to the output signal of amplifier 21,23 trip coils, it is by controllable silicon 22 control of switching on, and energising when main circuit 18 produces electric leakage, open make and break contact 19 by switching mechanism portion 6 (illustrating), cut off the electric current that flows through main circuit 18 at Figure 13.
24 is to be connected with the main circuit 18 of the load-side of make and break contact 19, to supply with its action with voltage and to the transformer of trip coil 23 service voltages to amplifier 21,25 is that an end is wound on the zero sequence converter 20, another end is connected the test circuit of (being connected in parallel with transformer 24) with main circuit 10 by leakage tests switch 10.
Action to traditional residual current circuit breaker of forming as mentioned above describes.
In case the electric leakage accident takes place in main circuit 18, flows through zero-sequence current, after then this zero-sequence current is measured by zero sequence converter 20, amplify by amplifier 21, offer the control utmost point of controllable silicon 22 as gate signal.Like this, controllable silicon 22 conductings flow to trip coil 23 from the secondary winding of transformer 24 by controllable silicon 22 electric currents, trip coil 23 energisings, and cut-off switch contact 19 cuts off the electric current that flows through main circuit 18.
Then the confirming operation test of carrying out residual current circuit breaker with leakage tests switch 10 is described.
If testing button 11 antagonism test springs are pushed (shown in Figure 14) to the arrow A direction, then test spring 12 contacts with flat spring 13, from the R of main circuit 18 mutually and T mutually (shown in Figure 15) pass through flat spring 13 and test spring 12, in the circuit of test circuit 25, flow through the simulation leakage current of direction shown in the arrow B.This electric current is measured by zero sequence converter 20, and the same during with above-mentioned common electric leakage accident, and make and break contact 19 disconnects.Consequently, can confirm the function no problem of residual current circuit breaker.When if make and break contact 19 does not disconnect, then judging in the component parts of residual current circuit breaker has fault.
In addition, when residual current circuit breaker is connected, cross bar 5 is state shown in Figure 14, if push testing button 11, test spring 12 contacts with flat spring 13, flow through the simulation leakage current, but when residual current circuit breaker disconnected or trip, cross bar 5 rotated to arrow C direction (Figure 14), actuating strut 16 is risen to arrow D direction (Figure 14), actuation element 14 is rotated to arrow E direction (Figure 14), and flat spring 13 is subjected to push (the following direction of Figure 14) of actuation element 14, therefore, test spring 12 does not contact with flat spring 13, so,, do not flow through the simulation leakage current in the test circuit 25 even press testing button 11 yet.
The residual current circuit breaker of Xing Chenging as mentioned above, oppositely connect (with power supply side terminal portion 2 and 3 opposite connections of load side terminal portion) and the handle (not shown) of residual current circuit breaker is limited under the state of off position with main circuit 18 in residual current circuit breaker, even push the action of testing button 11 continuously, because the effect of above-mentioned cross bar 5, actuating strut 16 and actuation element 14, leakage tests switch 10 also keeps off-state, can not flow through the simulation leakage current, so that trip coil 23 does not burn out.
Traditional residual current circuit breaker constitutes as mentioned above, by testing button 11, test spring 12 and flat spring 13 constitute leakage tests switch 10, when residual current circuit breaker is in open circuit or tripped condition, cross bar 5 rotates, by actuating strut 16 actuation element 14 is rotated, the pressing plate spring 13 thus, strengthen the gap of test spring 12 and flat spring 13, press testing button 11 even make, test spring 12 does not contact with flat spring 13 yet, so that leakage tests switch 10 keeps off state, but the problem that exists is, complex structure, and decision test spring 12 is adjusted difficulty with the gap whether flat spring contacts.
In addition, for the durability that guarantees that test spring 12 causes as strain repeatedly, and for test spring 12 is reliably contacted with flat spring 13, the length of the arm of the test spring 12 that for example extends is come corresponding, if but lengthening becomes big problem with regard to there being residual current circuit breaker itself.
Summary of the invention
The present invention is in order to solve as mentioned above problem and make, its purpose is, obtain a kind of like this residual current circuit breaker, this residual current circuit breaker is simple in structure, assembling is adjusted easily, residual current circuit breaker itself can be do not strengthened simultaneously and confirming operation can be reliably carried out, even push testing button continuously when confirming operation is tested, trip coil can not burn out yet.
(1) residual current circuit breaker of the present invention has: disconnection or closed jet are crossed the make and break contact of the electric current of main circuit; Detect the zero sequence converter of the leakage current of described main circuit; The signal of measuring according to this zero sequence converter utilizes switching mechanism portion to disconnect the trip coil of described make and break contact; One distolaterally be wound on the described zero sequence converter, another is distolateral with described main circuit flows through the test circuit of simulation leakage current when being connected, carrying out the confirming operation of residual current circuit breaker in described zero sequence converter; Be connected in this test circuit, the simulation leakage current that flows through this test circuit is flow through or cut off the leakage tests switch that carries out the residual current circuit breaker confirming operation; Be connected in series with this leakage tests switch and do linkedly mutually with the arm of described switching mechanism portion along with closure, disconnection and the tripping operation of described residual current circuit breaker to open and close, disconnect or become during tripping operation the tandem tap of open circuit when described residual current circuit breaker.
(2) in addition, the leakage tests switch is by testing button, the 1st fixed terminal that is connected with the 1st lead that forms test circuit and owing to the operation of described testing button strain takes place and is formed from, the 1st elastic component that closes with described the 1st fixed terminal, and tandem tap is electrically connected by the 2nd fixed terminal that is connected with the 2nd lead that forms described test circuit and with described the 1st elastic component and is formed from, the 2nd elastic component that closes with described the 2nd fixed terminal along with the opening and closing generation strain of residual current circuit breaker.
(3) in addition, the 1st elastic component and the 2nd elastic component are integrally formed with tabular elastic component.
(4) in addition, described tabular elastic component is configured as roughly ひ font, being located at the inserting part on the Shell of circuit breaker described tabular elastic component is remained on the described Shell of circuit breaker the central maintaining part intercalation of described tabular elastic component.
(5) in addition, make tabular elastic component be formed with U oxbow portion.
(6) in addition, tabular elastic component is formed by corrosion resistant plate or zinc-plated phosphor bronze sheet.
(7) in addition, contact site testing button, that contact with the 1st elastic component is provided with radius.
(8) in addition, the 1st elastic component and the 2nd elastic component are integrally formed with the wire elastic component, and the spire intercalation of described wire elastic component remains on the described Shell of circuit breaker described wire elastic component at the cylinder protuberance of being located at Shell of circuit breaker.
(9) in addition, the wire elastic component is formed by stainless steel wire or zinc-plated PHOSPHATE BRONZE WIRE.
(10) in addition, contact site testing button, that contact with the wire elastic component is provided with the slip slot part.
(11) in addition, the either party among the 1st lead and the 2nd lead forms with single core insulation electric wire, makes single core shaping of this list core insulation electric wire and forms fixed terminal.
(12) in addition, the either party of the 1st fixed terminal and the 2nd fixed terminal is provided with a plurality of protuberances.
Description of drawings
Figure 1 shows that the stereoscopic figure of the residual current circuit breaker of the invention process form 1.
When the residual current circuit breaker that Figure 2 shows that Fig. 1 is in open-circuit condition along the vertical profile cutaway view of F-F line.
When the residual current circuit breaker that Figure 3 shows that Fig. 1 is in off-state along the vertical profile cutaway view of G-G line.
Figure 4 shows that the circuit diagram of residual current circuit breaker and the main circuit connection status of Fig. 1.
The residual current circuit breaker that Figure 5 shows that Fig. 1 disconnect or during tripped condition major part amplify longitudinal section.
Major part is amplified longitudinal section when Figure 6 shows that the residual current circuit breaker closure state of Fig. 1.
Figure 7 shows that the amplification stereogram of the tabular elastic component of Fig. 5.
Figure 8 shows that the amplification stereogram of the fixed terminal of Fig. 5.
The residual current circuit breaker that Figure 9 shows that the invention process form 2 disconnects or the major part amplification stereogram during tripped condition.
Figure 10 shows that the amplification stereogram of wire elastic component of the residual current circuit breaker of Fig. 9.
Figure 11 shows that the amplification stereogram of the testing button of Fig. 9.
The residual current circuit breaker that Figure 12 shows that the invention process form 3 disconnects or the major part during tripped condition is amplified longitudinal section.
Figure 13 schematically shows the inner front view that constitutes of existing residual current circuit breaker.
Figure 14 is the peripheral stereogram that constitutes of leakage tests switch that the residual current circuit breaker of Figure 13 is shown.
Figure 15 shows that the circuit diagram of state on the main circuit that the residual current circuit breaker of Figure 13 is connected.
Embodiment
Example 1
Figure 1 shows that the stereoscopic figure of the residual current circuit breaker of the invention process form 1, when the residual current circuit breaker that Figure 2 shows that Fig. 1 is in open-circuit condition along the vertical profile cutaway view of F-F line, when the residual current circuit breaker that Figure 3 shows that Fig. 1 is in off-state along the vertical profile cutaway view of G-G line, Figure 4 shows that the circuit diagram of residual current circuit breaker and the main circuit connection status of Fig. 1, the residual current circuit breaker that Figure 5 shows that Fig. 1 disconnect or during tripped condition major part amplify longitudinal section, major part is amplified longitudinal section when Figure 6 shows that the residual current circuit breaker closure state of Fig. 1, Figure 7 shows that the amplification stereogram of the tabular elastic component of Fig. 5, Figure 8 shows that the amplification stereogram of the 1st fixed terminal of Fig. 5.
In Fig. 1 and Fig. 2,31 for example is the Shell of circuit breaker that forms with the molding synthetic resin material, 32 for example is the handle that is formed and undertaken by manual operation the folding of make and break contact 33 by the molding synthetic resin material, the 34th, be the open-close mechanism section that fulcrum rotates and makes make and break contact 33 foldings and have the arm 34b that engages with test open circuit cam 47 described later (illustrating at Fig. 3) with axle 34a, 35 for moving, make by open-close mechanism section 34 the electromagnetism trip gear of make and break contact 33 switchings when flowing through overcurrent when main circuit 30 described later (illustrating at Fig. 4).
In Fig. 3-Fig. 8,30 is main circuit (Fig. 4), 36 are the load-side of being located at make and break contact 33, the zero sequence converter that detects the leakage current of main circuit 30,37 amplifiers for the signal amplification that is connected with the outlet side of zero sequence converter 36, zero sequence converter 36 is measured, 38 controllable silicons that carry out conducting control for the output that utilizes amplifier 37,39 are control and the energising and make make and break contact 33 disconnections cut off the trip coil of the electric current that flows through main circuit 30 by open-close mechanism section 34 when main circuit 30 produces electric leakage of being switched on by controllable silicon 38.
40 for being connected with the load-side main circuit 30 of make and break contact 33 and supplying with the transformer that amplifier 37 operating voltages are supplied with trip coil 39 voltages simultaneously, 41 is that an end is on zero sequence converter 36, the other end is connected on the main circuit 30, flow through the test circuit of simulation leakage current at zero sequence converter 36,42 for being inserted in the leakage tests switch midway of test circuit 41, comprises the testing button 43 that is for example formed by the molding synthetic resin material, the 1st fixed terminal 44 that is connected with the 1st lead 41a that forms test circuit 41, and owing to strain takes place in the operation of testing button 43, with the 1st fixed terminal 44 from, the 1st elastic component 45 that closes.
46 for making the tandem tap of switching between the 2nd lead 41b that is connected leakage tests switch 42 and formation test circuit 41, by the test open circuit cam 47 that rotates along with closure, disconnection and the tripping operation of residual current circuit breaker, comprise: the 2nd fixed terminal 48 that is connected with the 2nd lead 41b, and take place along with the rotation of test open circuit cam 47 strain, with the 2nd fixed terminal 48 from, the 2nd elastic component 49 that closes.
Again, the 2nd elastic component 49 and the 1st elastic component 45 are electrically conductings, for example adopt corrosion resistant plate or zinc-plated phosphor bronze sheet carried out processing and forming and integrally formed, for example as the tabular elastic component of flat spring.The tabular elastic component of Xing Chenging is for the strain good endurance that repeats like this, and the contact resistance when the 1st fixed terminal 44 contacts with the 2nd fixed terminal 48 is also low, and contact stabilization is good.
Make the integrally formed tabular elastic component of the 1st elastic component 45 and the 2nd elastic component 49 be configured as roughly ひ font, be the roughly inserting part 31a of コ font from outwards outstanding being provided with of Shell of circuit breaker 31, roughly the lateral surface intercalation of the central maintaining part 51 of the tabular elastic component central authorities of ひ font remains on the medial surface of this inserting part 31a (Fig. 5), is provided with U oxbow portion 52 (Fig. 7) simultaneously between the 1st elastic component 45 and central maintaining part 51.43a is a radius (Fig. 5) of being located at contact portion testing button 43 bottoms, that contact with the 1st elastic component 45.
In the above description, be to make the lateral surface intercalation of central maintaining part 51 remain in the medial surface of inserting part 31a, but also can be to make the medial surface intercalation of central maintaining part 51 remain in the lateral surface of inserting part 31a again.
The 1st lead 41a and the 2nd lead 41b that form the part of test circuit 41 for example form with single core insulation electric wire, form processing by single core to this list core insulation electric wire, make it form the 1st fixed terminal 44 (Fig. 8) and the 2nd fixed terminal 48, intercalation remains in from the Shell of circuit breaker 31 outstanding prominent 31b of portion, the 31c (Fig. 5) of establishing that are provided with respectively
Again, in the above description, the 1st elastic component 45 and the 2nd elastic component 49 are integrally formed with tabular elastic component, but also can form the 1st elastic component 45 and the 2nd elastic component 49 respectively with member separately, they are remained on respectively on the Shell of circuit breaker 31, for example they are electrically connected with lead.
In addition, in the above-mentioned example, make the 1st lead 41a and the 1st fixed terminal 44 and the 2nd lead 41b and the 2nd fixed terminal 48 integrally formed, but the 1st lead 41a and the 2nd lead 41b also can form with the insulated electric conductor that for example with the strand is conductor, the 1st fixed terminal 44 and the 2nd fixed terminal 48 are for example formed with copper coin, as other member, be electrically connected by welding etc.
Action to the residual current circuit breaker in the example 1 that forms as mentioned above describes below.
If the electric leakage accident takes place in the main circuit 30, flow through zero-sequence current, after then this zero-sequence current is measured by zero sequence converter 36, amplify by amplifier 37, supply with the control utmost point of controllable silicon 38 as control signal.Like this, controllable silicon 38 conductings, electric current flows to trip coil 39 from the secondary winding of transformer 40 by controllable silicon 38, trip coil 39 energisings, make and break contact 33 disconnects, and the electric current that flows through main circuit 30 is cut off.
Below the confirming operation test that utilizes the residual current circuit breaker that leakage tests switch 42 carries out is described.
If testing button 43 being overcome the spring force of the 1st elastic component 45 pushes to arrow H direction (Fig. 6), then the 1st elastic component 45 is that fulcrum deforms (representing with chain-dotted line) with U oxbow portion 52, the 1st elastic component 45 contacts with the 1st fixed terminal 44, and just 30 process leakage tests switches 42 and tandem tap 46 flow the circuit of test circuit 41 the simulation leakage current along the described direction of arrow I (Fig. 4) from main circuit.
In addition, U oxbow portion 52 is along with distortion, and its fulcrum partly moves (Fig. 6 is from top to bottom) along the U oxbow, thus the stress dispersion, so have the good effect of durability.Then, detect the simulation leakage current with zero sequence converter 36, the same during just with above-mentioned common electric leakage accident, make and break contact 33 disconnects.Consequently, can confirm the function no problem of residual current circuit breaker.If make and break contact 33 does not disconnect, judge that then the component parts of residual current circuit breaker has had fault.
In addition, when residual current circuit breaker is closed, the position that combines the test open circuit cam 47 that rotates with the arm 34b of open-close mechanism section 34 is a state shown in Figure 6, the 2nd elastic component 49 and the 2nd fixed terminal 48 are in contact condition, if push testing button 43, then as mentioned above, the 1st elastic component 45 contacts with the 1st fixed terminal 44 and flows through the simulation leakage current, but make in manual operation under the state of residual current circuit breaker open circuit, when perhaps in main circuit 30, flowing through overcurrent and making electromagnetism trip gear 35 that action take place, and during the tripping operation when flowing through leakage current in the main circuit 30 and making trip coil 39 action, originally the arm 34b that remained on Fig. 6 position rotates to arrow J direction, make and test open circuit cam 47 remains on position from Fig. 5 to the rotation of arrow K direction, so the 2nd elastic component 49 tested open circuit cams 47 upwards lift, become the state that separates with the 2nd fixed terminal 48, even push testing button 43, the 1st elastic component 45 is contacted with the 2nd fixed terminal 44, can not flow through the simulation leakage current yet.
The residual current circuit breaker of the example 1 of Xing Chenging as mentioned above, because residual current circuit breaker oppositely is connected with main circuit 30, and the handle of residual current circuit breaker is limited in open position, so, from main circuit 30 under the state of test circuit 41 service voltages, even push the action of testing button 11 continuously, because wall 34b reaches the effect of the test open circuit cam 47 that combines action with arm 34b, tandem tap 46 is open-circuit condition, make to form the circuit that flows through the simulation leakage current, so can not burn out trip coil 39.
In addition, residual current circuit breaker is closed circuit, and still open circuit or tripped condition detect with tandem tap 46, so simple in structure, assembling is adjusted easily, need not strengthen the size of residual current circuit breaker body, just can reliably carry out confirming operation.
Again, above-mentioned explanation is the explanation that the situation of single-phase 2 line formula residual current circuit breaker is carried out, 3 mutually during 3 line formula residual current circuit breaker too.
Example 2
Major part when the residual current circuit breaker that Figure 9 shows that the invention process form 2 is in off state is amplified longitudinal section, Figure 10 shows that the amplification stereogram of wire elastic component of the residual current circuit breaker of Fig. 9, Figure 11 shows that the amplification stereogram of the testing button of Fig. 9.
In the drawings, in example 1, be that the tabular elastic component that the 1st elastic component 45 and the 2nd elastic component 49 usefulness are integrally formed forms, but present embodiment is that for example stainless steel wire or zinc-plated PHOSPHATE BRONZE WIRE are formed processing, substitute tabular elastic component, form the such wire elastic component of torsion spring, the wire elastic component forms and comprises the 1st elastic component 53 and the 2nd elastic component 54, and spiral part 55 intercalations are kept on the outstanding cylinder protuberance 31d that is located on the Shell of circuit breaker 31.In addition, the joint portion of testing button 43 bottoms and the 1st elastic component 53 is provided with the slip slot part 43b (Figure 11) with the form fit of wire elastic component.
Except that above-mentioned, the formation of the residual current circuit breaker of present embodiment, action and confirming operation test are identical with example 1.
According to the residual current circuit breaker of the example 2 that forms as mentioned above, because with integrally formed the 1st elastomeric element of linear-elastic parts and the 2nd elastomeric element, so inexpensive and be assembled in the Shell of circuit breaker easily.
In addition, because contact portion testing button 43, that contact with wire elastic component 53 is provided with the slip slot part 43b with the form fit of wire elastic component, so, when pushing testing button 43, strain takes place in wire elastic component 53 smoothly, reliably contacts with the 1st fixed terminal 44 simultaneously.
Example 3
Major part longitudinal sectional view when Figure 12 shows that residual current circuit breaker open circuit in the invention process form 3 or tripped condition.
In the drawings, residual current circuit breaker in the invention process form 3, single core to single core insulation electric wire forms processing and forms the 1st fixed terminal 44, the 1st fixed terminal 44 on, the face that closes, be provided with a plurality of protuberance 44a with the 1st elastic component 45, on, the face that closes, be provided with a plurality of protuberance 48a at the 2nd fixed terminal 48 and the 2nd elastic component 49.In the present embodiment, elastic component is tabular elastic component, but also can be the wire elastic component shown in the example 2.
Except above-mentioned, the formation of the residual current circuit breaker in the present embodiment, action and confirming operation test are identical with example 1.
According to the residual current circuit breaker of the example 3 that forms as mentioned above, because contact with a plurality of contact points during contact, so have the good effect of contact stabilization.
The effect of invention
(1) as mentioned above, according to the invention of claim 1, the leakage, breaking utensil has: disconnect or the closed jet mistake The switch contact of the electric current of main circuit; Detect the zero sequence converter of the electric leakage stream of described main circuit; Become according to this zero sequence The signal that the stream device is measured disconnects the coil of triping of described switch contact; One distolaterally be wound on the described zero sequence converter, Another distolateral and described main circuit flows in described zero sequence converter when being connected, carrying out the confirming operation of leakage, breaking device Cross the test circuit of simulation electric leakage stream; Be connected in this test circuit, the simulation electric leakage of flowing through this test circuit is flowed Flow through or cut off the leakage tests switch that carries out leakage, breaking device confirming operation; Connect even with this leakage tests switch Connect and do along with closure, disconnection and the tripping operation of described leakage, breaking device to open and close, when described leakage, breaking device disconnect or Become the tandem tap of open circuit during tripping operation, so, even disconnected at leakage, breaking device and main circuit Opposite direction connection and electric leakage The handle of road device is limited in opening a way under the state of position, and the action of pressing continuously testing button can shape yet Become to flow through the circuit of simulation electric leakage stream, so, the effect that the coil of triping can not burn out had.
(2) according to the invention of claim 2, the leakage tests switch by testing button, with form test circuit The 1st fixed terminal that the 1st lead connects and owing to the operation of described testing button take place strain and with Described the 1st fixed terminal forms from, the 1st elastic component that closes, tandem tap by with form described test circuit The 2nd fixed terminal that connects of the 2nd lead and be electrically connected with described the 1st elastic component and along with electric leakage is disconnected The opening and closing generation strain of road device and forming from, the 2nd elastic component that closes with described the 2nd fixed terminal, Because form with simple structure, so equipment adjustment is easy, do not strengthen the size of leakage, breaking device body, Just can reliably carry out confirming operation.
(3) according to the invention of claim 3, the 1st elastic component and the 2nd elastic component are with tabular elasticity structure Part is integrally formed, so, can be with simple formation, the cheap leakage, breaking device that forms.
(4) according to the invention of claim 4, because tabular elastic component is configured as roughly ひ font, with institute The central maintaining part intercalation of stating tabular elastic component makes described tabular bullet being located at the inserting part on the Shell of circuit breaker The property member remains on the described Shell of circuit breaker, so tabular elastic component is easy to the installation of Shell of circuit breaker.
(5) according to the invention of claim 5, because make tabular elastic component be formed with U font bending section, institute With, in order to carry out action test the operational testing button, when making the 1st elastic component repeat to be out of shape, the stress of generation Loose in the crooked part of U font, so durability is good.
(6) according to the invention of claim 6, because tabular elastic component is by corrosion resistant plate or zinc-plated phosphor bronze sheet Form, so durability is good, and good with the contact stabilization of the 1st fixed terminal or the 2nd fixed terminal.
(7) according to the invention of claim 7, because contact testing button, that contact with the 1st elastic component Section is provided with radius, so when in order to carry out action test during the operational testing button, the 1st elastic component can be suitable Smooth distortion, and can reliably contact with the 1st fixed terminal.
(8) according to the invention of claim 8, because the 1st elastic component and the 2nd elastic component wire elasticity Member is integrally formed, and the spiral section intercalation of described wire elastic component is being located on the cylinder protuberance of Shell of circuit breaker And described wire elastic component is remained on the described Shell of circuit breaker, so, inexpensive and to the peace of Shell of circuit breaker Dressing is easy.
(9) according to the invention of claim 9, because the wire elastic component is by stainless steel wire or zinc-plated phosphor bronze line Form, so durability is good, and good with the contact stabilization of the 1st fixed terminal or the 2nd fixed terminal.
(10) according to the invention of claim 10 because testing button, with connecing that the wire elastic component contacts Tactile section is provided with the slip slot part, so, in order to carry out action test during the operational testing button, wire elastic component energy Deform smooth and easyly, simultaneously, it is reliably contacted with the 1st fixed terminal.
(11) according to the invention of claim 11, single because the either party among the 1st lead and the 2nd lead uses The core insulation electric wire forms, and single core of this list core insulation electric wire is formed processing and forms fixed terminal, so Can cheaply consist of.
(12) according to the invention of claim 12, because the either party of the 1st fixed terminal and the 2nd fixed terminal Be provided with a plurality of protuberances, so, good with the contact stabilization of the 1st elastic component or the 2nd elastic component.
Claims (12)
1. residual current circuit breaker is characterized in that having:
Disconnection or closed jet are crossed the make and break contact (33) of the electric current of main circuit (30);
Detect the zero sequence converter (36) of the leakage current of described main circuit;
The signal of measuring according to this zero sequence converter utilizes switching mechanism portion to disconnect the trip coil (39) of described make and break contact;
One distolaterally be wound on the described zero sequence converter, another is distolateral with described main circuit flows through the test circuit (41) of simulation leakage current when being connected, carrying out the confirming operation of residual current circuit breaker in described zero sequence converter;
Be connected in this test circuit, the simulation leakage current that flows through this test circuit is flow through or cut off the leakage tests switch (42) that carries out the residual current circuit breaker confirming operation; And,
Be connected in series with this leakage tests switch and do linkedly mutually with the arm of described switching mechanism portion along with closure, disconnection and the tripping operation of described residual current circuit breaker to open and close, disconnect or become during tripping operation the tandem tap (46) of open circuit when described residual current circuit breaker.
2. residual current circuit breaker according to claim 1 is characterized in that,
Leakage tests switch (42) is by testing button (43), the 1st fixed terminal (44) that is connected with the 1st lead (41a) that forms test circuit and owing to the operation of described testing button strain takes place and is formed from, the 1st elastic component (45) that closes with described the 1st fixed terminal
Tandem tap (46) is electrically connected by the 2nd fixed terminal (48) that is connected with the 2nd lead (41b) that forms described test circuit and with described the 1st elastic component and is formed from, the 2nd elastic component (49) that closes with described the 2nd fixed terminal along with the opening and closing generation strain of residual current circuit breaker.
3. residual current circuit breaker according to claim 2 is characterized in that, the 1st elastic component (45) and the 2nd elastic component (49) are integrally formed with tabular elastic component.
4. residual current circuit breaker according to claim 3, it is characterized in that, described tabular elastic component is configured as roughly U font, being located at the inserting part on the Shell of circuit breaker (31) described tabular elastic component is remained on the described Shell of circuit breaker central maintaining part (51) intercalation of described tabular elastic component.
5. residual current circuit breaker according to claim 4 is characterized in that, makes tabular elastic component be formed with U oxbow portion (52).
6. residual current circuit breaker according to claim 3 is characterized in that, tabular elastic component is formed by corrosion resistant plate or zinc-plated phosphor bronze sheet.
7. residual current circuit breaker according to claim 3 is characterized in that, contact site testing button (43), that contact with the 1st elastic component (45) is provided with radius (43a).
8. residual current circuit breaker according to claim 2, it is characterized in that, the 1st elastic component and the 2nd elastic component are integrally formed with the wire elastic component, and the spire of described wire elastic component (55) intercalation remains on the described Shell of circuit breaker described wire elastic component at the cylinder protuberance (31d) of being located at Shell of circuit breaker (1).
9. residual current circuit breaker according to claim 8 is characterized in that, the wire elastic component is formed by stainless steel wire or zinc-plated PHOSPHATE BRONZE WIRE.
10. according to Claim 8 or 9 described residual current circuit breaker, it is characterized in that contact site testing button (43), that contact with the wire elastic component is provided with slip slot part (43b).
11. residual current circuit breaker according to claim 2, it is characterized in that, at least one side among the 1st lead (41a) and the 2nd lead (41b) forms with single core insulation electric wire, single core of this list core insulation electric wire is formed and forms fixed terminal (44,48).
12. residual current circuit breaker according to claim 11 is characterized in that, at least one side of the 1st fixed terminal and the 2nd fixed terminal is provided with a plurality of protuberances (44a, 48a).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001225370A JP2003045312A (en) | 2001-07-26 | 2001-07-26 | Ground-fault circuit interrupter |
| JP2001225370 | 2001-07-26 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1400619A CN1400619A (en) | 2003-03-05 |
| CN1269170C true CN1269170C (en) | 2006-08-09 |
Family
ID=19058372
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02127356 Expired - Fee Related CN1269170C (en) | 2001-07-26 | 2002-07-23 | Leakage breaker |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2003045312A (en) |
| CN (1) | CN1269170C (en) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4206993B2 (en) * | 2004-11-25 | 2009-01-14 | パナソニック電工株式会社 | Remote control type earth leakage breaker |
| JP4507944B2 (en) * | 2005-03-29 | 2010-07-21 | 三菱電機株式会社 | Earth leakage breaker |
| JP4760428B2 (en) | 2006-02-15 | 2011-08-31 | 富士電機機器制御株式会社 | Earth leakage breaker |
| JP4939869B2 (en) | 2006-08-11 | 2012-05-30 | 河村電器産業株式会社 | Circuit breaker |
| KR101028183B1 (en) * | 2006-08-11 | 2011-04-11 | 가와무라 일렉트릭 가부시키가이샤 | Circuit breaker |
| JP4921930B2 (en) * | 2006-11-10 | 2012-04-25 | 河村電器産業株式会社 | Circuit breaker |
| JP4869103B2 (en) * | 2007-02-22 | 2012-02-08 | 三菱電機株式会社 | Earth leakage relay |
| JP4926015B2 (en) * | 2007-12-05 | 2012-05-09 | 三菱電機株式会社 | Earth leakage relay |
| CN102064059B (en) * | 2009-11-13 | 2013-12-11 | 三菱电机株式会社 | Leakage breaker |
| KR101131673B1 (en) * | 2011-01-27 | 2012-03-28 | 가와무라 일렉트릭 가부시키가이샤 | Circuit breaker |
| CN103606490B (en) * | 2013-09-18 | 2016-03-02 | 浙江天正电气股份有限公司 | A kind of test button device of residual current circuit breaker |
| CN112366121B (en) * | 2020-10-15 | 2024-02-09 | 国网山东省电力公司枣庄供电公司 | Power supply protection switch |
-
2001
- 2001-07-26 JP JP2001225370A patent/JP2003045312A/en active Pending
-
2002
- 2002-07-23 CN CN 02127356 patent/CN1269170C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1400619A (en) | 2003-03-05 |
| JP2003045312A (en) | 2003-02-14 |
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Granted publication date: 20060809 Termination date: 20210723 |