CN101958529A - Residual current breaker switch with additional trigger switch - Google Patents
Residual current breaker switch with additional trigger switch Download PDFInfo
- Publication number
- CN101958529A CN101958529A CN2010105102677A CN201010510267A CN101958529A CN 101958529 A CN101958529 A CN 101958529A CN 2010105102677 A CN2010105102677 A CN 2010105102677A CN 201010510267 A CN201010510267 A CN 201010510267A CN 101958529 A CN101958529 A CN 101958529A
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- China
- Prior art keywords
- switch
- switching device
- protection switch
- winding
- current transformer
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/26—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents
- H02H3/32—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors
- H02H3/33—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors using summation current transformers
- H02H3/334—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors using summation current transformers with means to produce an artificial unbalance for other protection or monitoring reasons or remote control
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- Emergency Protection Circuit Devices (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Keying Circuit Devices (AREA)
- Breakers (AREA)
Abstract
The aim of the invention is to simplify the construction of a residual current breaker with additional switch function, in particular, an emergency off function. Said aim is achieved, by connection of the switch device for the additional function, for example, the emergency off switch (NA), to the summation current transformer (SW) by a bridge circuit (R, R, R, R) and a single winding (w9). On operating the emergency off switch (NA), the bridge is unbalanced and current flows through the winding (w9), so triggering the FI switch (FI1). No further windings need be provided for the emergency off function such that assembly space can be saved.
Description
The application be that July 12, application number in 2006 are 200680026267.1 the applying date, denomination of invention divides an application for the application for a patent for invention of " failure current protection switch that has the additional triggers switch ".
Technical field
The present invention relates to a kind of failure current protection switch that has summation current transformer and switching device; described summation current transformer is used for producing fault-signal under the situation of electric current that breaks down; described switching device is connected on the summation current transformer, even also can trigger failure current protection switch under the situation of the electric current that do not break down.
Background technology
In some application, failure current protection switch (FI protection switch) has the additional function of urgent disconnection, is favourable.But when realizing this additional function, must be noted that the complex conditions of this protection switch for wiring technique.In the case, protection switch self and the attachment device installing space that can use is very limited.
FI protection switch with this additional function of urgent disconnection belongs to known technology.What Fig. 1 showed is exactly the circuit diagram of this protection switch.In view of the above, can cut off current path L1, L2, L3 and the N of three phase network by switching mechanism S.In addition, current path L1, L2, L3 and N are also by winding w1, w2, w3 and w4 process summation current transformer SW.If do not break down electric current, the magnetic field that just can not produce the summation form in the magnetic core of summation current transformer SW.Circuits for triggering AK detects existing magnetic field by the secondary winding w8 that is connected equally on the summation current transformer SW.Circuits for triggering AK controls trigger equipment AE, can operate switch S by the locking device that does not show among the figure by means of trigger equipment AE.
For realizing urgent break function, be provided with outside urgent cut-off push button NA, for security reasons, urgent cut-off push button NA must be embodied as normally-closed contact.Urgent cut-off switch NA is connected on terminal Y1, the Y2 on the failure current protection switch FI.AC type, A type or Type B failure current protection switch FI have two the additional winding w5 and the w6 that are used to connect the reverse coiling of urgent cut-off switch NA.These two windings are connected neutral conductor N by resistor R 1 and R2 and wherein between the phase (herein for phase L3).Urgent cut-off push button NA connects with resistor R 2.Thereby under poised state, all having electric current to flow among two winding w5 and the w6, the ampere-turn of this moment is zero.If but press urgent cut-off push button NA, and just having only to also have electric current to flow among the winding w5, the ampere-turn of this moment is non-vanishing, and consequently failure current protection switch FI is triggered.Openly cross similar failure current protection switch among the EP 0374506A2.
In known example shown in Figure 1, also be provided with the checkout button PT that is embodied as normally opened contact.This is incorporated into the checkout button PT among the failure current protection switch FI, and P is connected on the winding 7 that is wound on equally on the summation current transformer SW by the check resistor R.Whole check branch road PT, RP, w7 and urgent disconnected branches NA, R2, w6 and R1, w5 are in parallel.If press checkout button PT, summation current transformer SW will be magnetized by winding w7, can trigger failure current protection switch FI by circuits for triggering AK whereby.
Above-mentioned shortcoming with FI protection switch of urgent this additional function of disconnection is that its structure is quite complicated, and needs bigger space that corresponding attachment device is installed.
Summary of the invention
Therefore, the objective of the invention is to simplify the structure of the FI protection switch that has the extra switch function.
According to the present invention; this purpose is reached by a kind of failure current protection switch that has a summation current transformer and a switching device; described summation current transformer is used for producing fault-signal under the situation of electric current that breaks down; described switching device is connected on the described summation current transformer; even under the situation of the electric current that do not break down, also can trigger to failure current protection switch; wherein, described switching device is connected on the described summation current transformer by a bridgt circuit and an independent winding.
Basic ideas of the present invention are: when bridge balance, do not have electric current to pass through in the branch road, thereby this branch road can be connected on the summation current transformer of FI protection switch; Can make the bridge circuit off resonance by switching device, thereby make branch road magnetize in summation current transformer of initial not belt current turn usefulness into.
According to the present invention, can advantageously save one or two and be wound on winding on the summation current transformer.Not only requisite space can be reduced whereby, also installation cost can be reduced.
The invention provides a kind of failure current protection switch, comprising:
A summation current transformer is used for producing fault-signal under the situation of electric current that breaks down, and
A switching device, described switching device is connected on the described summation current transformer, even under the situation of the electric current that do not break down, also can trigger to described failure current protection switch,
Described switching device is connected on the described summation current transformer by a bridgt circuit and an independent winding,
Described bridgt circuit is a Wheatstone bridge, and described Wheatstone bridge has four same resistors, and described winding is arranged in the diagonal angle branch road of described Wheatstone bridge, and described switching device links to each other with described Wheatstone bridge.
Preferably, described switching device comprises a urgent cut-off switch, and described urgent cut-off switch is configured as normally-closed contact, and with a plurality of impedances of described bridgt circuit in one connect.
Preferably, described switching device comprises a checkout button, and in a plurality of impedances of described checkout button and described bridgt circuit is in parallel.
Described switching device preferably includes a urgent cut-off switch.Simply mode is incorporated into urgent break function in the FI protection switch whereby.
The switching device of FI protection switch also can comprise a checkout button.Even under urgent cut-off switch and checkout button all are connected situation on the described bridgt circuit, also only need an independent winding just can realize coupling with summation current transformer.Can further save installing space whereby.
If bridgt circuit is configured as Wheatstone bridge, be used for just being arranged in the diagonal angle branch road of described bridgt circuit with the winding of summation current transformer coupling.In the case, as long as make the bridgt circuit off resonance, just can trigger failure current protection switch by operating urgent cut-off push button and/or checkout button.
Be configured as at switching device under the situation of normally-closed contact, for example urgent cut-off push button, suitable way is that one in a plurality of impedances of this normally-closed contact and bridgt circuit is connected in series.If switching device (for example checkout button) is configured as normally opened contact, just an impedance of itself and bridgt circuit should be connected in parallel.
Description of drawings
The present invention is described in detail by accompanying drawing below, wherein:
Fig. 1 is for having the FI protection switch of urgent disconnection additional function in the prior art; And
The FI protection switch of Fig. 2 urgent disconnection additional function for the present invention has.
Embodiment
Hereinafter the embodiment that will describe in detail is a preferred implementation of the present invention.
The assembly that failure current protection switch FI1 of the present invention shown in Figure 2 is had is identical with the assembly major part of failure current protection switch FI shown in Figure 1.Therefore, the details of relevant configuration aspects sees also above illustrating of relevant Fig. 1.
Winding w5, the w6 and the w7 that are provided with among Fig. 1 are replaced, and described summation current transformer SW only has an independent winding w9 now, and this winding w9 is arranged in the diagonal angle branch road of the Wheatstone bridge that has four same resistors R.Bridge circuit is by the power voltage supply between neutral conductor N and the phase L3.Under poised state, on the electric bridge is zero to angle voltage, does not have electric current to pass through among the winding w9.That is to say that FI switch FI1 is not triggered.
Urgent cut-off push button NA in a bridge branch be arranged in this bridge branch in resistor R connect.In normal operation, urgent cut-off push button closure, bridge balance.When emergency took place, this urgent cut-off push button disconnected, the electric bridge off resonance, and described winding w9 is with summation current transformer SW magnetization, thus triggering FI switch.
Described checkout button PT is designed to normally opened contact, and in another bridge branch be arranged in this bridge branch in resistor R in parallel.If PT operates to checkout button, this resistor R will be by cross-over connection, thereby makes described bridgt circuit off resonance.Above-mentioned FI switch FI1 can be triggered equally.That is to say, in the present embodiment, on the position that originally is furnished with three winding w5, w6 and w7, only need to arrange an independent winding w9.Whereby can be as indicated above, simplify the structure of summation current transformer and entire equipment.
May need to be totally independent of urgent break function under some situation and realize checking function.In the case, can be that two functions are provided with an independent winding respectively on summation current transformer SW.But nonetheless, compared to existing technology in as shown in Figure 1 known device, also can save a winding.
Claims (3)
1. failure current protection switch (FI1) comprising:
A summation current transformer (SW) is used for producing fault-signal under the situation of electric current that breaks down, and
A switching device (NA), described switching device is connected on the described summation current transformer, even under the situation of the electric current that do not break down, also can trigger to described failure current protection switch (FI1),
It is characterized in that,
Described switching device (NA) by bridgt circuit (R, R, R, R) and an independent winding (w9) be connected on the described summation current transformer (SW),
Described bridgt circuit is a Wheatstone bridge, and described Wheatstone bridge has four same resistors (R), and described winding (w9) is arranged in the diagonal angle branch road of described Wheatstone bridge, and described switching device (NA) links to each other with described Wheatstone bridge.
2. failure current protection switch according to claim 1, wherein, described switching device comprises a urgent cut-off switch (NA); described urgent cut-off switch (NA) is configured as normally-closed contact, and with described bridgt circuit (R, R; R, a series connection in a plurality of impedances R).
3. failure current protection switch according to claim 1 and 2, wherein, described switching device comprises a checkout button (PT), described checkout button (PT) and described bridgt circuit (R, R, R, a parallel connection in a plurality of impedances R).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102005034644.8 | 2005-07-25 | ||
| DE200510034644 DE102005034644B4 (en) | 2005-07-25 | 2005-07-25 | Residual current circuit breaker with additional release switch |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2006800262671A Division CN101223682A (en) | 2005-07-25 | 2006-07-12 | Residual current breaker switch with additional trigger switch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101958529A true CN101958529A (en) | 2011-01-26 |
| CN101958529B CN101958529B (en) | 2012-07-04 |
Family
ID=36974413
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2006800262671A Pending CN101223682A (en) | 2005-07-25 | 2006-07-12 | Residual current breaker switch with additional trigger switch |
| CN2010105102677A Expired - Fee Related CN101958529B (en) | 2005-07-25 | 2006-07-12 | Residual current breaker switch with additional trigger switch |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2006800262671A Pending CN101223682A (en) | 2005-07-25 | 2006-07-12 | Residual current breaker switch with additional trigger switch |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP1908158A1 (en) |
| CN (2) | CN101223682A (en) |
| DE (1) | DE102005034644B4 (en) |
| WO (1) | WO2007012563A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107238749A (en) * | 2016-03-29 | 2017-10-10 | 西门子公司 | Spill current sensor |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102015004541A1 (en) | 2015-04-08 | 2016-10-13 | Doepke Schaltgeräte GmbH | Residual current device with additional tripping function |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0189493B1 (en) * | 1985-01-28 | 1989-06-21 | Heinrich Kopp GmbH & Co. KG | Gfi circuit breaker in the form of a connecting plug |
| FR2638909B1 (en) * | 1988-11-04 | 1995-03-31 | Merlin Gerin | DIFFERENTIAL TRIGGER WITH TEST CIRCUIT AND SELF-PROTECTED OPENING REMOTE CONTROL |
| IT1227723B (en) * | 1988-12-23 | 1991-05-06 | Elettrocondutture | POSITIVE SAFETY DEVICE FOR REMOTE OPENING, IN AN EMERGENCY SITUATION, IN PARTICULAR OF DIFFERENTIAL SWITCHES |
| DE19748391A1 (en) * | 1997-11-03 | 1999-05-06 | Maier & Cie C | Methods for increasing the reliability of a residual current circuit breaker and residual current circuit breaker for performing this method |
| DE50312842D1 (en) * | 2003-05-15 | 2010-08-12 | Siemens Ag | All-current sensitive residual current device |
-
2005
- 2005-07-25 DE DE200510034644 patent/DE102005034644B4/en not_active Expired - Fee Related
-
2006
- 2006-07-12 EP EP06777718A patent/EP1908158A1/en not_active Withdrawn
- 2006-07-12 WO PCT/EP2006/064135 patent/WO2007012563A1/en not_active Application Discontinuation
- 2006-07-12 CN CNA2006800262671A patent/CN101223682A/en active Pending
- 2006-07-12 CN CN2010105102677A patent/CN101958529B/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107238749A (en) * | 2016-03-29 | 2017-10-10 | 西门子公司 | Spill current sensor |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1908158A1 (en) | 2008-04-09 |
| CN101223682A (en) | 2008-07-16 |
| CN101958529B (en) | 2012-07-04 |
| DE102005034644B4 (en) | 2014-04-10 |
| DE102005034644A1 (en) | 2007-02-01 |
| WO2007012563A1 (en) | 2007-02-01 |
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| PB01 | Publication | ||
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Granted publication date: 20120704 Termination date: 20140712 |
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| EXPY | Termination of patent right or utility model |