CN201022146Y - Analog and digital residual current action protector - Google Patents
Analog and digital residual current action protector Download PDFInfo
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- CN201022146Y CN201022146Y CNU2007201434022U CN200720143402U CN201022146Y CN 201022146 Y CN201022146 Y CN 201022146Y CN U2007201434022 U CNU2007201434022 U CN U2007201434022U CN 200720143402 U CN200720143402 U CN 200720143402U CN 201022146 Y CN201022146 Y CN 201022146Y
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- breaker body
- electric leakage
- main circuit
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Abstract
The utility model relates to an earth leakage protector which has a modularization integral body composed of an earth leakage accessory and a breaker body having decomposition structure, wherein the interior of the modularization integral body is separated with a space which bestrides the breaker body and the earth leakage accessory and contains a zero-sequence mutual inductor; each electrode is only provided with one pair of input and output connecting terminals connected with a main circuit; a connecting terminal line composed of various input connecting terminals bestrides the earth leakage accessory and the breaker body and is arranged on one end; and connecting plates of various output ends or input ends are threaded through an inner hole of a magnetic core ring of the zero-sequence mutual inductor and connected on an inner electrification component of the connecting terminal of the main circuit. The earth leakage accessory directly introduces the electricity in the breaker body into the earth leakage accessory to regard as the power supply through a conducting rod arranged between the breaker body and the earth leakage accessory, which causes the conducting rod and a movable contact of the breaker body to realize the switch movable connection. The connection of the breaker body and the earth leakage accessory on the main circuit employs the non-mechanical electric connection, thereby solving the shortages that the temperature of the product rises, the reliability is not high, the volume is large, and the like.
Description
Technical field
The utility model relates to a kind of earth leakage protective device of plastic shell, claims RCD again, particularly relates to the RCD that can prevent circuit temperature rise and protective circuit safety.
Background technology
RCD is a kind of circuit breaker of being made up of breaker body, zero-sequence transformer and electric leakage annex with safety protection function.Wherein, the effect of breaker body is an on/off task of carrying out main circuit; the effect of zero-sequence transformer is the improper unsymmetrical current (claiming residual current again) that occurs in the detection line main circuit; when equipment leaks electricity; zero-sequence current appears in the power lead by zero-sequence transformer; the instrument transformer secondary produces induced electromotive force; with the improper unsymmetrical current in the detected main circuit is actuating signal; after the amplification of electric leakage annex; the adhesive of control tripping coil; drive the tripping mechanism action of circuit breaker; make the circuit breaker deenergization; thereby realize safety protection functions such as earth leakage protective, that is to say that the effect of electric leakage annex is the tripping mechanism action of the detected signal of zero-sequence transformer being amplified and controls circuit breaker.
Be illustrated in figure 1 as a kind of circuit breaker of selling in the market with residual current protecting function; its breaker body 2 and electric leakage annex 1 respectively are independently split; adopt screw to carry out mechanical attachment between them; the zero-sequence transformer (not shown) is arranged in the electric leakage annex 1; between breaker body 2 and the electric leakage annex 1 main circuit be electrically connected the mode that adopts shell outer conductor mechanical system to be electrically connected, the shell of electric leakage annex is non-modularization.
Be illustrated in figure 2 as the another kind of RCD of selling in the market; its breaker body 2, electric leakage annex 1 and zero-sequence transformer 4 have independently split respectively; mutual assembly unit connects by syndetons such as screws between them, and the electrical connection between them also is to adopt housing outer conductor mechanical system to connect.
The circuit theory of existing RCD as shown in Figure 1 and Figure 2 has as shown in Figure 3 and Figure 4 two kinds, and the label of each components and parts is among the figure: the power line of 4-zero-sequence transformer, 14-tripping coil, 13-piezo-resistance, 500-main circuit.
By Fig. 3 and Fig. 4 finding, the operating voltage of existing electric leakage annex 1 is all taken from the two poles of the earth of the same end of zero-sequence transformer 4, in case its shortcoming is to occur the higher phenomenon of long-time overvoltage in the circuit, with regard to the electronic devices and components on the wiring board that burns out electric leakage annex 1 easily.Specifically; as shown in Figure 3; when voltage in the circuit surpasses the nominal conducting voltage of piezo-resistance 13; because tripping coil 14 is arranged on after the piezo-resistance 13; so no matter in the piezo-resistance great electric current is arranged; the breaker body action that all can't realize threading off continued when long when the time, will burn piezo-resistance 13 and protective device was lost efficacy.As shown in Figure 4, when overvoltage in the circuit surpasses the nominal conducting voltage of pressure-sensitive middle resistance 13, because tripping coil 14 is arranged on before the piezo-resistance 13, so when the electric current in the piezo-resistance 13 reached the drop-away current (ampere level electric current) of tripping coil 14, breaker body can be threaded off and cut off the electricity supply.But because the electric current of piezo-resistance 13 increases gradually, need certain hour so reach the drop-away current of tripping coil, during this period of time piezo-resistance 13 can be generated heat, and breaker body may occur and also the action of dropout and the problem of piezo-resistance 13 with regard to having been burnt out.
Two kinds of RCDs illustrated in figures 1 and 2 are two kinds of typical circuit breakers selling in the market, and their common drawback is:
First; because the connection lead between electric leakage annex and each utmost point of breaker body is many and long, the contact that lead connects is many, so temperature rise is higher; and wire joining be prone to cut-off, problem such as loose contact, so have a strong impact on the reliability and stability of earth leakage protective device.
Second; because electric leakage annex and breaker body are independently split and non-modularization; on breaker body and electric leakage annex, be respectively arranged with the input wires terminal of two homopolarities and the output wiring terminal of two homopolarities; and when the earth leakage protective device number of poles increases according to user's needs; terminals subnumber on the electric leakage annex increases thereupon, and the size of the annex that promptly leaks electricity increases with the increase of earth leakage protective device number of poles.So the overall dimension of existing earth leakage protective device is very big, and the profile after the assembly unit is nonstandard, and trouble is adjusted in assembling, is unfavorable for the utilization in distribution box space, the manufacturing cost and use cost height.
The 3rd, because the two poles of the earth that the operating voltage of electric leakage annex is taken from the same end of zero-sequence transformer, so in case occur the higher phenomenon of long-time overvoltage in the circuit, burn out the electronic devices and components on the wiring board easily, and earth leakage protective device was lost efficacy.
The patent No. is the technology that 02127356.1 Chinese invention patent discloses a kind of residual current circuit breaker, the zero-sequence transformer of the prior art is arranged in the electric leakage annex, electric leakage annex and zero-sequence transformer are arranged in the same modularization shell, electrical connection between breaker body, zero-sequence transformer, the electric leakage annex adopts the lead mechanical system to be electrically connected, the two poles of the earth that the operating voltage of electric leakage annex is taken from the same end of zero-sequence transformer.With the prior art shown in the prior art and above-mentioned Fig. 1-2 relatively, characteristics are that electric leakage annex and circuit breaker adopt monolithic case, realize easily modularization, but that remaining feature comprises the end of incoming cables of side connecting conductor formula, circuit breaker is all identical with aforementioned prior art with the setting of leading-out terminal, the electric connection mode of leak electricity annex and breaker body etc.As everyone knows, the integral width of residual current circuit breaker is equivalent to the width sum of width with the electric leakage annex of breaker body, because the input of the residual current circuit breaker of the prior art, output wiring terminal all concentrates on the breaker body, its zero-sequence transformer is arranged in the electric leakage annex, the electric leakage annex need be realized being connected by zero-sequence transformer and breaker body, therefore, the width of electric leakage annex is subjected to the zero-sequence transformer restriction that setting and connection thereof took up space of portion within it, and the circuit breaker integral width will be imported by it, the restriction of output wiring terminal width, because of the quantity of drawing lead is that increase with the breaker body number of poles increases, make the width dimensions of the prior art circuit breaker modularization shell big especially, and its width can be bigger with the increase size of circuit breaker number of poles, still there be not substantive the solution as Fig. 1, the defective of the prior art shown in 2 exists volume big, outstanding problems such as waste distribution box space.
The utility model content
The purpose of this utility model is to provide a kind of RCD of a new generation; it has overcome the tripartite planar defect of above-mentioned prior art dexterously simultaneously; with breaker body; electric leakage annex and zero-sequence transformer are arranged in the decomposable modularization monolithic case housing; wherein the setting of zero-sequence transformer has made full use of the useful space in the modularization integral body; thereby make the compact conformation of earth leakage protective device; the overall dimension of electric leakage annex does not increase with the increase of earth leakage protective device number of poles; need not between electric leakage annex and the breaker body to realize that by outer lead mechanical type is electrically connected; make to have reached and minimize with the number of contacts that is electrically connected of main circuit; thereby main circuit cut-offfing at the contact of earth leakage protective device inside avoided in the earth leakage protective device temperature rise of having avoided electrical lead and contact to cause; the earth leakage protective device that poor electric contact etc. cause lost efficacy and potential safety hazard.
The purpose of this utility model also is to provide a kind of RCD of a new generation; solve prior art products turnover line and connect inverse time; the phenomenon that leakage current causes protector to burn out appears; the utility model makes full use of the performance of the piezo-resistance on the electronic circuit board; make product have certain over-voltage protection function; as long as flow through the specified residual current (milliampere level) that electric current in the piezo-resistance of protector reaches regulation; circuit breaker is just threaded off and is cut off the electricity supply, thereby improves reliability of products, fail safe and useful life.
To achieve these goals, the utility model adopts following technical scheme.
RCD of the present utility model; zero-sequence transformer is arranged on the load-side of the make and break contact on the main circuit; be used to detect the leakage current of main circuit; this protector has a modularization integral body; described modularization integral body is made up of the breaker body of electric leakage annex and decomposition texture; in the inner space of described modularization integral body; be separated out a space that holds described zero-sequence transformer across breaker body and electric leakage annex; this space is in the described breaker body and inputs or outputs the end place near main circuit; described zero-sequence transformer is arranged near in the described inner space of breaker body; perhaps be arranged in the described modularization integral body across inner near in the space that inputs or outputs the end place of main circuit at electric leakage annex and breaker body; the main circuit connection plate of described breaker body directly passes the endoporus of zero-sequence transformer magnetic core ring, makes the length of terminal block the shortest.Every utmost point of described modularization integral body is provided with an input wires terminal and an output wiring terminal, the molecular connecting terminal block of each utmost point input terminal, by mode across electric leakage annex and breaker body, be arranged on an end of modularization integral body, the connecting terminal block that each utmost point output wiring terminal is formed, by mode across electric leakage annex and breaker body, be arranged on the other end of modularization integral body, each utmost point output of described breaker body or the terminal block of input, pass from the endoporus of the magnetic core ring of described zero-sequence transformer, be connected on internally charged of binding post of described main circuit.Described electric leakage annex is by being arranged on the conducting rod between breaker body and the electric leakage annex, directly the electricity in the breaker body is introduced the phase of electric leakage annex, made described conducting rod realize that with the moving contact of breaker body switching regulator dynamically is connected as its working power.
The decomposition texture of the described breaker body of RCD of the present utility model is made of the shell of one group of decomposable modularization, and the binding post installation position of described decomposable modularization shell can be separated with its integral part.
The electric leakage annex of RCD of the present utility model is introduced the phase of electric leakage annex as working power by the interior conducting rod of establishing with the utmost point in the breaker body, and described conducting rod is arranged between breaker body and the electric leakage annex.
RCD of the present utility model; the supply voltage of the circuit board of described electric leakage annex is taken from the two poles of the earth of main circuit of the both sides of zero-sequence transformer; perhaps take from the two poles of the earth of the zero-sequence transformer lower end and the main circuit of the make and break contact upper end side that is connected breaker body; when the voltage between main circuit the two poles of the earth surpasses the nominal conducting voltage of piezo-resistance; zero-sequence transformer is a residual current with this input; send actuating signal to tripping coil, finish automatic dropout and cut off the electricity supply.
On the dividing plate between described electric leakage annex and the breaker body, be provided with at least one hole, therefrom pass for described conducting rod.
Earth leakage protective device of the present utility model is arranged on zero-sequence transformer in the space of the input of the close main circuit that is separated out in the modularization integral body of earth leakage protective device or output; the terminal block of breaker body directly passes zero-sequence transformer; the main circuit of cancellation electric leakage annex and breaker body adopts the electric connection mode of the machinery of outside screw-driving; the electric leakage annex does not also just need to draw lead again and breaker body carries out assembly unit; so electric leakage annex size can not increase with the increase of number of poles; the profile of electric leakage annex can not change with the increase of number of poles, the problem that increases thereby the quantity that has solved the lead that prior art draws increases along with number of poles.
Device of the present utility model adopts the full-module global design and is electrically connected the minimized design of contact, and the temperature rise that compact conformation, overall dimension be little, greatly reduce earth leakage protective device is convenient to install, save the installing space of distribution box.Because the supply voltage of electric leakage annex is taken from the voltage between the two poles of the earth of zero-sequence transformer both sides; as long as so when flowing through the residual current (milliampere level) that electric current in the piezo-resistance reaches regulation; circuit breaker is just threaded off and is cut off the electricity supply; thereby significantly improved the reliability and the safe class of earth leakage protective device, prolonged the useful life of earth leakage protective device greatly.
Description of drawings
Fig. 1 is a kind of circuit breaker with residual current protecting function of prior art.
Fig. 2 is a kind of RCD of another prior art.
Fig. 3 is a kind of circuit theory diagrams of the circuit breaker with residual current protecting function of prior art.
Fig. 4 is the another kind of circuit theory diagrams of the circuit breaker with residual current protecting function of prior art.
Fig. 5 is the overall appearance three-dimensional view that has the RCD embodiment of the annex that leaks electricity of the present utility model.
Fig. 6 is the sectional perspective view that has the RCD embodiment of the annex that leaks electricity of the present utility model, there is shown the position and the structure of zero-sequence transformer.
Fig. 7 is the structural representation of the conducting rod of the RCD embodiment that has an annex that leaks electricity of the present utility model, there is shown conducting rod and moving contact is in closure state.
Fig. 8 is the structural representation of the conducting rod of the RCD embodiment that has an annex that leaks electricity of the present utility model, there is shown conducting rod and moving contact is in released state.
Fig. 9 is the circuit theory sketch that has the RCD embodiment of the annex that leaks electricity of the present utility model, and the supply voltage that there is shown the electric leakage annex is taken from the two poles of the earth of zero-sequence transformer both sides.
Figure 10 is another embodiment of the electric leakage annex of protector of the present utility model, there is shown supply voltage the two poles of the earth of taking from zero-sequence transformer lower end and breaker body make and break contact upper end side respectively of electric leakage annex.
Embodiment
Describe the specific embodiment of RCD of the present utility model in detail below in conjunction with accompanying drawing, residual current circuit breaker of the present utility model is not limited to following examples.
As shown in Figure 5 and Figure 6; RCD of the present utility model comprises the zero-sequence transformer 4 of the load-side that is arranged on the make and break contact on the main circuit; be used to detect the leakage current of main circuit 500; this protector has a modularization integral body 100; described modularization integral body 100 is made up of the breaker body 2 of electric leakage annex 1 and decomposition texture; in the inner space of described modularization integral body 100; be separated out a space that holds described zero-sequence transformer 4 15 across breaker body 2 and electric leakage annex 1; this space 15 is in the described breaker body 2 and inputs or outputs the end place near main circuits 500; described zero-sequence transformer 4 is arranged near in the described inner space 15 of breaker body 2; perhaps be arranged in the described modularization whole 100 across in the space that inputs or outputs the end place 15 of the close main circuit 500 of electric leakage annex 1 and breaker body 2 inside; the live part of one end main circuit in breaker body 2 of the endoporus 41 of the magnetic core ring of zero-sequence transformer 4 is arranged; the other end is towards internally charged 16 of the binding post of main circuit; so that after the main circuit connection plate 5 of described breaker body directly passes the endoporus 41 of zero-sequence transformer 4 magnetic core rings; be connected with the live part 16 of binding post 12, thereby make the length of terminal block 5 the shortest.Every utmost point of described modularization integral body 100 has only a pair of input and output binding post 11 that is connected with main circuit, 12, the molecular connecting terminal block of each utmost point input terminal, by mode across electric leakage annex 1 and breaker body 2, be arranged on an end of modularization integral body 100, the connecting terminal block that each utmost point output wiring terminal is formed, by mode across electric leakage annex 1 and breaker body 2, be arranged on the other end of modularization integral body 100, each utmost point output of described breaker body 2 or the terminal block 5 of input, pass from the endoporus 41 of the magnetic core ring of described zero-sequence transformer, be connected on internally charged 16 of binding post 12 of described main circuit.Described electric leakage annex (1) is by being arranged on the conducting rod (3) between breaker body (2) and the electric leakage annex (1), directly the electricity in the breaker body (2) is introduced the phase of electric leakage annex (4), made described conducting rod (3) realize that with the moving contact (8) of breaker body (2) switching regulator dynamically is connected as its working power.
The decomposition texture of the described breaker body of RCD of the present utility model is made of the shell of one group of decomposable modularization, and the binding post installation position of described decomposable modularization shell can be separated with its integral part.
The zero-sequence transformer 4 of earth leakage protective device of the present utility model also can be arranged on the input or the output of described breaker body 2 or modulus integral body 100.Concentrate when being arranged on the breaker body 2 at the molecular connecting terminal block of each utmost point input terminal, zero-sequence transformer 4 should be arranged in the space 15 near the output of circuit breaker 2 or input end.At each utmost point output or the molecular connecting terminal block of input terminal, when being provided with across electric leakage annex 1 and breaker body 2, zero-sequence transformer 4 is by the mode across electric leakage annex 1 and breaker body 2, be arranged in the inner space 15 of the output of modularization integral body 100 or input end, also can be arranged on breaker body 2 near output or input ends.If zero-sequence transformer 4 is arranged in the breaker body 2, after the output of breaker body 2 or the terminal block of input pass from the endoporus 41 of the magnetic core ring of zero-sequence transformer 4, must with the shape of complications be connected across internally charged of the binding post that is arranged on the electric leakage annex 1.
As shown in Figure 7, the power supply of electric leakage annex 1 is to be obtained from the moving contact part 8 in the breaker body 2 by conducting rod 3.The circuit (not shown) that is connected of one end of conducting rod 3 and electric leakage annex 1, its other end is connected with the moving contact 8 of breaker body 2 or internally charged of output/input.On the dividing plate between described electric leakage annex 1 and the breaker body 2, be provided with at least one hole, therefrom pass for described conducting rod 3.
Conducting rod 3 is to be made by high resiliency and the good good conductor of solderability.
Shown in Fig. 7 or 8, the advantage that adopts conducting rod is to realize that moving contact 8 dynamically is electrically connected with switching regulator between the conducting rod 3, and when promptly protector was in open position, an end of conducting rod (3) did not contact with any electrified body.As shown in Figure 7, when moving contact 8 and fixed contact (not shown) were in closure state, an end of conducting rod 3 and moving contact 8 were also closed, and main circuit is in on-state and electric leakage annex corresponding work voltage is provided.As shown in Figure 8, when moving contact 8 and fixed contact were in released state, an end of conducting rod 3 also separated with moving contact 8, and main circuit is in leak electricity the simultaneously operating voltage of annex of off-state and disappears.Therefore; the advantage of this structure be the electric leakage annex operating voltage have or not the Synchronization Control that is subjected to the main circuit on/off; when the leakage current in the circuit makes the action of electric leakage annex; no matter whether the input and the output of product connect instead; as long as breaker body (2) is in off-state; the electronic circuit board of annex (1) of can both guaranteeing to leak electricity does not have operating voltage, thereby the input that effectively prevents protector termination inverse time causes burning out the phenomenon of electronic devices and components in the circuit owing to main circuit has leakage current with output.
As shown in Figure 9, the circuit theory sketch of the wiring board of the electric leakage annex 1 of the utility model RCD comprises piezo-resistance 13, tripping coil 14 and zero-sequence transformer 4, and other circuit elements devices do not repeat them here with conventional electric leakage annex.As seen from Figure 9, the two poles of the earth that the operating voltage of electric leakage annex 1 is taken from the main circuit 500 of zero-sequence transformer 4 both sides, like this, when the voltage between the two poles of the earth of main circuit 500 surpasses the nominal conducting voltage of piezo-resistance 13, the current detecting that zero-sequence transformer 4 will flow through piezo-resistance 13 is the residual current of main circuit, as long as when flowing through the specified residual current that the electric current of piezo-resistance 13 reaches regulation (milliampere level), tripping coil 14 starts tripping mechanisms and threads off automatically and cut off the electricity supply.
From circuit shown in Figure 9, no matter external power source inserts from the upper end or the lower end of main circuit 500, and when occurring leakage current in the circuit and make the action of electric leakage annex, after main circuit was cut off, the supply voltage of electric leakage annex disappeared along with the disconnection of main circuit.Circuit diagram when Fig. 9 is in open position for the utility model earth leakage protective device; that power line that links to each other with main circuit with tripping coil among the figure is a conducting rod; in Fig. 9, do not contact with any position in the main circuit; when earth leakage protective device is in off-state; this conducting rod mediates; do not contact with dynamic/static contact, thereby avoid being burnt, for example controllable silicon etc. because of input and output connect the anti-ballistic electronic devices and components that cause electric leakage annex circuit.Because conducting rod 3 is that switching regulator dynamically is connected with electrical connection between the moving contact 8, when main circuit disconnected, the power supply of electric leakage annex cut off thereupon.When not being subjected to the Synchronization Control of main circuit on/off for the circuit on/off that makes the electric leakage annex, still can avoid the generation of this problem, the utility model also provides following second embodiment.
Another execution mode of the electric leakage annex 1 of protector of the present utility model is; the supply voltage of electric leakage annex 1 as shown in figure 10; take from the two poles of the earth on the main circuit of zero-sequence transformer lower end side and its upper end side that is connected with killer switch contact 71, the supply voltage of the annex 1 that promptly leaks electricity is taken from the two poles of the earth on the main circuit of both sides of zero-sequence transformer and killer switch contact 71.By shown in Figure 10, the make and break contact 71 in the main circuit 500 is subjected to tripping coil 14 controls, and when tripping coil 14 made circuit breaker tripping, this make and break contact 71 disconnected, that is the moving contact 8 of breaker body as shown in Figure 82 disconnects with fixed contact.This shows that no matter circuit breaker turnover line is just connecing still reversal connection, as long as breaker body 2 is threaded off the make and break contact 71 on the main circuit is disconnected, the supply voltage of electric leakage annex 1 just is 0, to prevent that electronic devices and components are burnt out in the circuit.
Obviously, the utility model is not limited to above-mentioned specific embodiment, for example, conducting rod 3 can adopt fixing the electrical connection, interchangeable mode is, conducting rod 3 also needn't necessarily be connected with moving contact 8, but can be connected with the live part of the main circuit of the output of breaker body 2 or input, also can be connected with the live part of moving contact part or fixed contact parts, this fixedly electrical connection for example can adopt welding, be threaded etc., and mode realizes.
Claims (6)
1. RCD is arranged on the zero-sequence transformer (4) of the load-side of the make and break contact on the main circuit (500), is used to detect the leakage current of main circuit (500), it is characterized in that:
This protector has a modularization integral body (100), and described modularization integral body (100) is made up of the breaker body (2) of electric leakage annex (1) and decomposition texture,
In the inner space of described modularization integral body (100), be separated out a space that holds described zero-sequence transformer (4) (15) across breaker body (2) and electric leakage annex (1), this space is in the described breaker body (2) and inputs or outputs the end place near main circuit (500), described zero-sequence transformer (4) is arranged near in the described inner space (15) of breaker body (2), perhaps is arranged in the described modularization integral body (100) across in the space (15) of electric leakage annex (1) and breaker body (2);
Every utmost point of described modularization integral body (100) is provided with an input wires terminal (11) and an output wiring terminal (12), the molecular connecting terminal block of each utmost point input terminal, by mode across electric leakage annex (1) and breaker body (2), be arranged on an end of modularization integral body (100), the connecting terminal block that each utmost point output wiring terminal is formed, by mode, be arranged on the other end of modularization integral body (100) across electric leakage annex (1) and breaker body (2);
Each utmost point output of described breaker body (2) or the terminal block (5) of input pass from the endoporus (41) of the magnetic core ring of zero-sequence transformer (4), are connected on internally charged (16) of binding post (12) of described main circuit;
Described electric leakage annex (1) is directly introduced the electricity in the breaker body (2) phase of electric leakage annex (4) as its working power by being arranged on the conducting rod (3) between breaker body (2) and the electric leakage annex (1).
2. according to the RCD of claim 1; it is characterized in that: the decomposition texture of described breaker body (2) is made of the shell of one group of decomposable modularization, the binding post installation position of described decomposable modularization shell and the separable setting of its integral part.
3. according to the RCD of claim 1; it is characterized in that: an end of described conducting rod (3) is connected with a power end of the circuit of electric leakage annex (1); its other end carries out switching regulator with the moving contact (8) of breaker body (2) and dynamically is electrically connected; or with fixedly connected near internally charged of that utmost point of electric leakage annex (1); described live part is as the terminal block of output or input; the fixed contact parts; described switching regulator dynamically is electrically connected and is meant when moving contact (8) and fixed contact are closed; moving contact (8) and conducting rod (3) are also closed thereupon to be connected, when moving contact (8) when separating with fixed contact; moving contact (8) also separates disconnection with conducting rod (3) thereupon.
4. according to the RCD of claim 1; it is characterized in that: the supply voltage of the circuit of described electric leakage annex (1) is taken from the two poles of the earth of main circuit (500) of the upper and lower both sides of zero-sequence transformer (4), perhaps takes from zero-sequence transformer (4) lower end side is connected the make and break contact of breaker body (2) with it the two poles of the earth of main circuit (500) of upper end side.
5. according to the RCD of claim 1; it is characterized in that: the live part of end main circuit in breaker body (2) of the endoporus (41) of the magnetic core ring of described zero-sequence transformer (4) is arranged; the other end is towards internally charged (16) of the binding post (12) of main circuit; so that after the main circuit connection plate (5) of described breaker body (2) directly passes the endoporus (41) of zero-sequence transformer (4) magnetic core ring; be connected with the live part (16) of binding post (12), thereby make the length of terminal block (5) the shortest.
6. according to the RCD of claim 1 or 3, it is characterized in that: on the dividing plate (7) between described electric leakage annex (1) and the breaker body (2), be provided with at least one hole, therefrom pass for described conducting rod (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201434022U CN201022146Y (en) | 2007-04-05 | 2007-04-05 | Analog and digital residual current action protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201434022U CN201022146Y (en) | 2007-04-05 | 2007-04-05 | Analog and digital residual current action protector |
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| Publication Number | Publication Date |
|---|---|
| CN201022146Y true CN201022146Y (en) | 2008-02-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201434022U Expired - Fee Related CN201022146Y (en) | 2007-04-05 | 2007-04-05 | Analog and digital residual current action protector |
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| CN (1) | CN201022146Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102013362A (en) * | 2010-11-10 | 2011-04-13 | 浙江德隆电器有限公司 | High-safety automatic resetting breaker |
| CN101281837B (en) * | 2007-04-05 | 2011-06-29 | 浙江正泰电器股份有限公司 | Modularization aftercurrent actuating protector |
-
2007
- 2007-04-05 CN CNU2007201434022U patent/CN201022146Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101281837B (en) * | 2007-04-05 | 2011-06-29 | 浙江正泰电器股份有限公司 | Modularization aftercurrent actuating protector |
| CN102013362A (en) * | 2010-11-10 | 2011-04-13 | 浙江德隆电器有限公司 | High-safety automatic resetting breaker |
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Granted publication date: 20080213 Termination date: 20120405 |