CN2884506Y - Electromagnetic/permanent magnetism type dipolar leakage switch - Google Patents
Electromagnetic/permanent magnetism type dipolar leakage switch Download PDFInfo
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- CN2884506Y CN2884506Y CN 200620023870 CN200620023870U CN2884506Y CN 2884506 Y CN2884506 Y CN 2884506Y CN 200620023870 CN200620023870 CN 200620023870 CN 200620023870 U CN200620023870 U CN 200620023870U CN 2884506 Y CN2884506 Y CN 2884506Y
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Abstract
An electromagnetic / permanent-magnetic two-pole electric leakage switch belongs to emergency circuit protection device field. At least an electromagnetic pull-in type switch action module is arranged between the input and output wiring terminals, and the electromagnetic pull-in type switch action module that is formed by static armature core, movable supporting frame, movable armature, restoring spring and pull-in /release coil. A static contact and a movable contact are arranged on static armature or shell and armature; The movable contact and static contact are correspondingly connected with input and output wiring terminals of two-pole electric leakage switch, the bidirectional driving circuit is arranged between pull-in/ release coil and switch control circuit; The input terminal of bidirectional driving circuit is connected with switch control circuit control output terminal. When the utility model witch is closed or broken, no electric current flows through the pull-in / release coil, so the utility model has advantages of low power consumption, little heat emission, large switch contact, capacity, self-power transmitting function, and high work reliability, can be extensively used in various types of single-phase two pole leakage protection switch .
Description
Technical field
The utility model belongs to emergency protective circuit device field, relates in particular to a kind of earth leakage circuit-breaker device that is used for civilian single phase distribution system sectionalised protection.
Background technology
Earth leakage circuit-breaker (hereinafter to be referred as leakage switch) is a kind of power supply unit, supply line are implemented comprehensive integrated protection and have the comprehensive leakage protective device of on-load switch function concurrently; because of it has advantage of simple structure; both can be used as the switch (circuit breaker) of on-load; can do the earth leakage protective comprehensive protector of circuit again, so obtained increasingly extensive application.
At present; the leakage switch that is adopted in single-phase civilian distribution system (being single-phase lighting system confession, distribution system) mainly contains two kinds: a kind of is to be the mechanical type residual current circuit breaker of representative with DZ15LE-X/290 series, and another kind is to be the relay system earth leakage protective device of representative with KC series.
Wherein, the former switch on/off actuating mechanism adopts conventional zero sequence current mutual inductor, leakage tripping device and has the circuit breaker of overload and short-circuit protection; its function is more complete; volume is less; it is reliable to work, but it does not possess and send the electric work energy automatically owing to adopt the mechanical switch structure; bring great inconvenience for line management personnel and user, only be suitable as scene protection.
The latter is actual to be that an electronics is from homing position type secondary earth leakage protective device; it is except having conventional creepage protection function; can also realize from functions such as the power supplies that resets; but because it adopts the controlling organization of auxiliary relay as the switch on/off; be subjected to the restriction of relay contact capacity; the on/off finite capacity of its switch; and himself power consumption is big; no overcurrent; short-circuit protection function; add that its coil is in "on" position all the time when work; for the leakage switch that works long hours; tend to cause its coil heating serious, occur because of the heating distortion of coil or burn the situation that causes the leakage switch cisco unity malfunction, had a strong impact on the normal operation and the power supply quality of protective device through regular meeting; the safety that is unfavorable for electric power system; stable operation makes its range of application be subjected to certain restriction.
The utility model content
Technical problem to be solved in the utility model provides a kind of electromagnetic type/magneto two utmost point leakage switch; it had both had the big advantage of mechanical type leakage switch contact capacity; the defencive function that can realize the relay system leakage switch again is many, can send functions such as electricity certainly; whole power consumption is little; switch motion is reliable; help safety, the stable operation of electric power system, be easy to be accepted by users.
The technical solution of the utility model is: a kind of electromagnetic type/magneto two utmost point leakage switch are provided, comprise the input, the output wiring terminal that are arranged on the housing, be arranged on the ON-OFF control circuit in the housing, it is characterized in that: between its input, output wiring terminal, be provided with comprise at least by the multi-disc silicon steel sheet stacked constitute decide armature iron core, travel(l)ing rest, be positioned at moving armature on the travel(l)ing rest, be used for the back-moving spring that travel(l)ing rest resets and be positioned at the suction decided on the armature and/electromagnetism suction type switch motion assembly that release coil constituted; Deciding that quiet, moving contact is set respectively on armature or housing and the moving armature; Dynamic and static contact respectively with the corresponding electrical connection of input, output wiring terminal of two utmost point leakage switch; Inhale with/release coil and be connected with ON-OFF control circuit.
Further, with deciding corresponding position, armature iron core position the moving armature that is made of the permanent-magnet steel body is set on described travel(l)ing rest, its permanent-magnet steel body is arranged on the travel(l)ing rest below and decides on the corresponding position of armature position; The cross section of permanent-magnet steel body is rectangle, the square or circular identical or approximate with deciding armature iron core shape of cross section.
Meanwhile, inhale and/drive circuit in bi-directional is set between release coil and the ON-OFF control circuit, the input of drive circuit in bi-directional is connected with the control output end of ON-OFF control circuit.
Its drive circuit in bi-directional is the bistable state reverse circuit of controlled bidirectional impulse output circuit or dual input control end, corresponding with the control output end of the ON-OFF control circuit respectively connection of two input control end, and its output is connected with the two ends of coil; Drive circuit in bi-directional is exported a direct impulse to coil when switch closure under the control of ON-OFF control circuit, when switch disconnects, coil is exported a reverse impulse, when during the switch closure and after disconnecting, not to the coil output pulse signal.
In addition, respectively with on the lead of the corresponding electrical connection of input, output wiring terminal of two utmost point leakage switch current transformer is set at dynamic and static contact; Its current transformer is load current instrument transformer or zero sequence current mutual inductor, the output of each current transformer respectively with the corresponding connection of corresponding signal input of ON-OFF control circuit.
Compared with the prior art, the utility model has the advantages that:
The fabricated structure that adopts electromagnetism suction type switch motion assembly to combine with permanent magnetic steel; only when the closed and disconnected of electromagnetic switch mechanism; just there is electric current to flow through in its adhesive/release coil; it during operate as normal magnetic attraction by the permanent-magnet steel body closure of keeping switch; make that the charged operating time of solenoid is short; both had the big advantage of mechanical type leakage switch contact capacity; the defencive function that can realize the relay system leakage switch again is many; can send functions such as electricity certainly; solved the problem that causes switch to damage because of coil heating; improve the reliability of leakage switch work greatly, helped the safety of electric power system; stable operation.
Description of drawings
Fig. 1 is a mechanical structure schematic diagram of the present utility model;
Fig. 2 is the circuit block diagram of the utility model;
Fig. 3 is the line map of embodiment of the drive circuit in bi-directional of the utility model;
Fig. 4 is the input of drive circuit in bi-directional, the oscillogram of output.
1 is travel(l)ing rest among the figure, and 2 for to decide armature, and 3 is the permanent-magnet steel body, 4 for inhale and/release coil, 5 is drive circuit in bi-directional, 6 is ON-OFF control circuit, 7 is fixed contact, 8 is moving contact, 9 is back-moving spring.
Embodiment
Below in conjunction with drawings and Examples the utility model is described further.
Among Fig. 1, between the input of leakage switch, output wiring terminal (not shown), be provided with comprise at least by the multi-disc silicon steel sheet stacked constitute decide armature iron core 2, travel(l)ing rest 1, be positioned at moving armature 3 on the travel(l)ing rest, be used for the back-moving spring 9 that travel(l)ing rest resets and be positioned at the suction decided on the armature and/electromagnetism suction type switch motion assembly that release coil 4 is constituted; Deciding that quiet, moving contact 7 and 8 is set respectively on armature or housing and the moving armature; Dynamic and static contact respectively with the corresponding electrical connection of input, output wiring terminal of two utmost point leakage switch; Inhale with/release coil and be connected with the ON-OFF control circuit (not shown).
Concrete, on travel(l)ing rest with decide the moving armature that the setting of corresponding position, armature iron core position is made of the permanent-magnet steel body, its permanent-magnet steel body is arranged on the travel(l)ing rest below and decides on the corresponding position of armature position, and the cross section of permanent-magnet steel body is rectangle, the square or circular identical or approximate with deciding armature iron core shape of cross section.
Back-moving spring not necessarily leaves no choice but adopt Extension Spring-type (left side of stand type support shown in the figure is set), also can adopt compressed spring type (the right of stand type support shown in the figure is set).
Among Fig. 2, be provided with permanent-magnet steel body 3 with travel(l)ing rest 1 (not shown) of deciding corresponding position, armature 2 iron core positions, inhale and/drive circuit in bi-directional 5 is set between release coil 4 and the ON-OFF control circuit 6, inhale with/two ends a, the b of release coil and be connected the input U of drive circuit in bi-directional with output Uj1, the Uj2 of drive circuit in bi-directional 5
a, U
bBe connected with control output end Ka, the Kb of ON-OFF control circuit.
Drive circuit in bi-directional is under the control of ON-OFF control circuit, when switch closure to inhale and/release coil exports a direct impulse, when switch disconnects, exports a reverse impulse to inhaling with/release coil, when during the switch closure and after disconnecting, not to inhale and/the release coil output pulse signal.
Owing to adopt circuit structures such as ON-OFF control circuit, load current instrument transformer or zero sequence current mutual inductor; make whole leakage switch when contact capacity increases, can possess all multi-functional (such as self-locking, certainly reset power supply etc.) that the electromagnetic leakage protector is arranged again.
Because above-mentioned ON-OFF control circuit, load current instrument transformer or zero sequence current mutual inductor etc. are the prior art of leakage switch, its concrete circuit and the course of work are no longer narrated at this.
Among Fig. 3, drive circuit in bi-directional is the bistable state reverse circuit of controlled bidirectional impulse output circuit or dual input control end, two input control end U
a, U
bCorresponding with the control output end of ON-OFF control circuit (not shown) respectively connection, its output are connected with inhaling with the two ends of/release coil.
As a kind of embodiment, when above-mentioned drive circuit in bi-directional adopts bistable state reverse circuit form, can comprise triode T1～T6 and resistance R 1～R6.Wherein, the base stage of T1 is through resistance R 1 and input control end U
aConnect input control end U
aAlso be connected with the base stage of T6 through resistance R 6, the collector electrode of T1 is connected with the positive pole+E of power supply through resistance R 2, and is connected the grounded emitter of T1 with the base stage of T2 simultaneously;
The emitter of T2 is connected with the positive pole+E of power supply, and its collector electrode is connected with an end of coil and the collector electrode of T3;
The grounded emitter of T3, its base stage is through resistance R 3 and another input control end U
bConnect.
Equally, the base stage of T4 is through resistance R 4 and input control end U
bConnect, the collector electrode of T4 is connected with the positive pole+E of power supply through resistance R 5, is connected the grounded emitter of T4 with the base stage of T5 simultaneously;
The emitter of T5 is connected with the positive pole+E of power supply, and its collector electrode is connected with the other end of coil and the collector electrode of T6;
The grounded emitter of T6.
Work as U
a=1, U
b=0 o'clock, the T1 conducting, U1 is a low level, the T2 conducting, T6 conducting simultaneously, power supply to coil, arrives ground through T6 through T2 again, the coil adhesive, the pulling force that travel(l)ing rest overcomes back-moving spring moves downwards, the switch contact closure.
Work as U
a=0 and U
b=0 o'clock, travel(l)ing rest maintained attracting state by the magnetic attraction of permanent-magnet steel body, and closure state is continued to maintain in the contact of switch.
Work as U
a=0, U
b=1 o'clock, the T4 conducting, U4 is a low level, the T5 conducting, T3 conducting simultaneously, power supply to coil, are arrived ground through T3 through T5 again, and coil produces a reverse magnetic thrust, travel(l)ing rest overcomes the upwards action of magnetic attraction of permanent-magnet steel body under the tension of back-moving spring, switch contact disconnects.
Above-mentioned drive circuit in bi-directional not only is confined to the bistable state reverse circuit of the shown dual input control end of this figure, and other controlled bidirectional impulse output circuits (discrete component formula or ic-type) with type all can be realized the goal of the invention of the technical program.
Among Fig. 4, work as U
a=1 o'clock, U
JBe a direct impulse, inhale and/the release coil adhesive, dynamic and static contact is connected, switch closure;
Work as U
a=0 and U
b=0 o'clock, inhale and/release coil in the no pulse electric current flow through, travel(l)ing rest maintains attracting state by the magnetic attraction of permanent-magnet steel body, closure state is continued to maintain in the contact of switch;
Work as U
b=1 o'clock, U
JBe a negative-going pulse, inhale and/release coil produces an opposing magnetic field, offset the magnetic attraction of permanent magnetic steel, causes travel(l)ing rest to reset/discharges under the effect of back-moving spring, dynamic and static contact separates, the switch disconnection.
By above-mentioned oscillogram as can be seen, during the switch closure and after disconnecting, inhale and/release coil in no current flow through, so its power consumption is little, do not generate heat substantially.
Because the utility model is by being provided with the drive circuit in bi-directional and the permanent magnetic steel of electromagnetism suction type switch motion assembly, adhesive/release coil; make that the charged operating time of its coil is short; solved the problem that causes switch to damage because of coil heating; both had the big advantage of mechanical type leakage switch contact capacity; the defencive function that can realize the relay system leakage switch again is many, can send functions such as electricity certainly; improve the reliability of leakage switch work greatly, helped safety, the stable operation of electric power system.
The utility model can be widely used in single-phase (two utmost point formulas) earth leakage circuit-breaker of all size model.
Claims (6)
1. electromagnetic type/magneto two utmost point leakage switch comprise the input, the output wiring terminal that are arranged on the housing, are arranged on the ON-OFF control circuit in the housing, it is characterized in that:
In its input, be provided with between the output wiring terminal comprise at least by the multi-disc silicon steel sheet stacked constitute decide armature iron core, travel(l)ing rest, be positioned at moving armature on the travel(l)ing rest, be used for the back-moving spring that travel(l)ing rest resets and be positioned at the suction decided on the armature and/electromagnetism suction type switch motion assembly that release coil constituted;
Deciding that quiet, moving contact is set respectively on armature or housing and the moving armature;
Dynamic and static contact respectively with the corresponding electrical connection of input, output wiring terminal of two utmost point leakage switch;
Inhale with/release coil and be connected with ON-OFF control circuit.
2. according to described electromagnetic type/magneto two utmost point leakage switch of claim 1, it is characterized in that with deciding corresponding position, armature iron core position the moving armature that is made of the permanent-magnet steel body being set on described travel(l)ing rest, its permanent-magnet steel body is arranged on the travel(l)ing rest below and decides on the corresponding position of armature position; Described suction and/drive circuit in bi-directional is set between release coil and the ON-OFF control circuit, the input of drive circuit in bi-directional is connected with the control output end of ON-OFF control circuit.
3. according to described electromagnetic type/magneto two utmost point leakage switch of claim 2, it is characterized in that the cross section of described permanent-magnet steel body is rectangle, the square or circular identical or approximate with deciding armature iron core shape of cross section.
4. according to described electromagnetic type/magneto two utmost point leakage switch of claim 2, it is characterized in that described drive circuit in bi-directional is the bistable state reverse circuit of controlled bidirectional impulse output circuit or dual input control end, corresponding with the control output end of the ON-OFF control circuit respectively connection of two input control end, its output is connected with the two ends of coil; Drive circuit in bi-directional is exported a direct impulse to coil when switch closure under the control of ON-OFF control circuit, when switch disconnects, coil is exported a reverse impulse, when during the switch closure and after disconnecting, not to the coil output pulse signal.
5. according to described electromagnetic type/magneto two utmost point leakage switch of claim 1, it is characterized in that respectively with on the lead of the corresponding electrical connection of input, output wiring terminal of two utmost point leakage switch current transformer being set at described dynamic and static contact.
6. according to described electromagnetic type/magneto two utmost point leakage switch of claim 5, it is characterized in that described current transformer is load current instrument transformer or zero sequence current mutual inductor, the output of each current transformer respectively with the corresponding connection of corresponding signal input of ON-OFF control circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620023870 CN2884506Y (en) | 2006-03-21 | 2006-03-21 | Electromagnetic/permanent magnetism type dipolar leakage switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620023870 CN2884506Y (en) | 2006-03-21 | 2006-03-21 | Electromagnetic/permanent magnetism type dipolar leakage switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2884506Y true CN2884506Y (en) | 2007-03-28 |
Family
ID=37957559
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620023870 Expired - Fee Related CN2884506Y (en) | 2006-03-21 | 2006-03-21 | Electromagnetic/permanent magnetism type dipolar leakage switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2884506Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106098489A (en) * | 2016-08-09 | 2016-11-09 | 金英花 | A kind of chopper with auto-lock function |
-
2006
- 2006-03-21 CN CN 200620023870 patent/CN2884506Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106098489A (en) * | 2016-08-09 | 2016-11-09 | 金英花 | A kind of chopper with auto-lock function |
| CN106098489B (en) * | 2016-08-09 | 2018-04-13 | 金英花 | A kind of breaker with auto-lock function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070328 Termination date: 20110321 |