CN202353192U - Wiring protecting device for power distribution system - Google Patents
Wiring protecting device for power distribution system Download PDFInfo
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- CN202353192U CN202353192U CN2011202710736U CN201120271073U CN202353192U CN 202353192 U CN202353192 U CN 202353192U CN 2011202710736 U CN2011202710736 U CN 2011202710736U CN 201120271073 U CN201120271073 U CN 201120271073U CN 202353192 U CN202353192 U CN 202353192U
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Abstract
The utility model relates to a wiring protecting device for a power distribution system, which comprises a testing apparatus, wherein the testing apparatus comprises a testing circuit; and the testing circuit is configured to periodically generate at least one first test signal which does not execute a software instruction. A test monitoring circuit operates when the software instruction is not executed and is coupled to a fault detecting circuit and an actuator module; and the test monitoring circuit is configured to implement an electronic test verification state in response to a received fault detection signal corresponding to the first test signal and to implement the electronic test verification state in response to non-detection for the fault detection signal corresponding to the first test signal. The test monitoring circuit is configured to implement a trip state if a circuit breaker does not respond to an electronic test fault state or does not respond to a fault detected in an actuator device, thereby implementing a service life end detection state. The service life ending circuit module is configured to decouple a plurality of circuit terminals from a plurality loaded terminals in response to the service life end detection state.
Description
Technical field
Present invention relates in general to the electrical wiring device, and more specifically relate to electrical wiring device with protection characteristic.
Background technology
The example of circuit protection device comprises ground fault circuit interrupter (GFCIs), arc fault circuit-breaker (AFCIs), or in a protective device, had not only comprised GFCIs but also comprised the device of AFCIs.Circuit generally includes at least one protective device that is set in circuit-breaker case, two-phase socket, plug or the like.Modal malfunction is earth fault and arc fault.The effect of protective device is exactly a detection failure, then to the possibility of load circuit outage to eliminate electric shock or to catch fire basically.
Arc fault is the electrical discharge between two or more conductors.The arc fault that those skilled in the art are known two types; They comprise parallelly connected arc fault and series arc faults.On the other hand, earth fault is when current-carrying (live wire) thereby the state that conductor ground connection was taken place when generating the current path of non-expectation.The current path of said non-expectation means shock hazard.The ground connection neutral state is when the load neutral terminal or the another kind of malfunction that takes place when being connected to the conductor ground connection of said load neutral terminal.Though this state is not represented shock hazard immediately, two malfunctions of hiding possibly cause serious injury or accident.
Normally, protective device comprises the electronics and the mechanical part of degenerating and breaking down, and makes said parts experience end-of-life (EOL) state.Unit failure maybe be because multiple former thereby generation.Fault possibly take place owing to the normal aging of electronic unit.Mechanical part possibly become corrosion, experience mechanical wear, or because machinery abuse produces fault.Overload when installing, device also possibly break down.Electrical power surge such as lightning also possibly cause fault.If any one in transducer, detector, switch, solenoid and/or the power supply is broken down, that is, there is the EOL state, then GFCI maybe not can trip, and makes the user expose as experience serious injury or death.Therefore, under the EOL state, end to expect to the protective device of load circuit power supply.
Therefore, need a kind of protective device, it has and is used to detect the two the test feature of fault of electric component and electro-machanical parts.In addition, need a kind of device with independent mechanism for testing, it is configured to end to supply power to load circuit in response to aforementioned EOL state.
Summary of the invention
The invention solves the demand.Therefore, the present invention relates to a kind of protective device, it has and is used to detect the two the test feature of fault of electric component and electricapparatus parts.Protective device of the present invention also comprises independent mechanism for testing, and it is configured to end to supply power to load circuit in response to above-mentioned EOL state.
One aspect of the present invention relates to a kind of protecting cloth line apparatus that is used for distribution system, and said device comprises: a plurality of line terminals, and it comprises fire line terminal and neutral terminal; A plurality of face terminals, it comprises a plurality of feedthrough face terminals and a plurality of socket face terminals; Failure detector circuit, it is coupled to said a plurality of line terminal, and said failure detector circuit is configured in response to detecting at least one predetermined perturbation in the said distribution system fault detection signal is provided; Actuator, it is coupled to said failure detector circuit, and said actuator devices is configured to provide actuator to encourage in response to said fault detection signal or in response to the Electronic Testing malfunction that realizes; Resetting device, it comprises that the user who is coupled to mechanical connection can touch button; Circuit-breaker; It is coupled to said actuator devices and said resetting device; Said circuit-breaker comprises that four groups interrupt the contact, and said four groups of interruption contacts are configured under reset mode, between said a plurality of line terminals and said a plurality of face terminals, being electrically connected property is provided, and is configured under tripped condition, interrupt said being electrically connected property; When meshing said circuit-breaker when user's actuating that can touch button in response to said user and through mechanical connection; Realize said reset mode, when in response to the excitation of said actuator with said circuit-breaker when said mechanical connection breaks off, realize said tripped condition; Testing equipment; It comprises test circuit; Said test circuit is configured to periodically produce not at least one first test signal of executive software instruction; Said at least one first test signal is configured to cause the simulated failure corresponding to said at least one predetermined perturbation, and said testing equipment also comprises the manual test circuit that is configured to produce second test signal; The test observation circuit; It operates and is coupled to said failure detector circuit and said actuator under the situation of not executive software instruction; Said test observation circuit is configured to realize the Electronic Testing proofing state in response to receiving corresponding to the said fault detection signal of said first test signal; And do not realize said Electronic Testing proofing state in response in first predetermined amount of time, detecting corresponding to the said fault detection signal of said first test signal; Fail in response to said Electronic Testing malfunction or fail to realize tripped condition if said test observation circuit is configured to said circuit-breaker, then realize the life-span stop detection state in response to detecting the fault in the said actuator devices; And the end-of-life circuit unit, it is coupled to said test observation circuit, and said end-of-life circuit unit is configured in response to said life-span stop detection state said a plurality of line terminals and said a plurality of face terminals uncoupling.
According to a further aspect in the invention, said actuator comprises first thyristor that is coupled to tripping solenoid, and said end-of-life circuit unit comprises second thyristor that is coupled to said tripping solenoid.
Other features and advantages of the present invention will be below by detailed elaboration; From through comprising that following detailed description, claim and accompanying drawing put into practice the explanation and understanding that the present invention obtains here, a part is understanding easily to those skilled in the art with describing.
Be, aforementioned general explanation and following detailed description only are examples of the present invention with should be appreciated that, and being intended to provides general introduction or framework for essence and the characteristic of understanding the present invention for required protection.Accompanying drawing is used to provide for further understanding of the present invention, is merged in and constitutes the part of specification.Accompanying drawing shows various embodiment of the present invention, and is used to explain principle of the present invention and enforcement with specification.
Description of drawings
Fig. 1 is the sketch map according to the electric device of the embodiment of the invention;
Fig. 2 is the concrete perspective view of the end-of-life mechanism that adopts in the electric device shown in Figure 1;
Fig. 3 is the sketch map according to the electric device of second embodiment of the invention;
Fig. 4 is the detail view according to blocking mechanism of the present invention;
Fig. 5 is another view of the blocking mechanism of Fig. 4;
Fig. 6 is a view again of the blocking mechanism of Fig. 4.
Embodiment
Concrete now with reference to example embodiment of the present invention, the example of said embodiment shown in the drawings.As much as possible, identical Reference numeral refers to identical or similar parts in whole accompanying drawing.The example embodiment of protective device of the present invention is illustrated among Fig. 1, and generally in the whole text by Reference numeral 10 expressions.
Such as here embodiment and Fig. 1 description ground, shown electric device 10 according to an embodiment of the invention.Though the sketch map of Fig. 1 relates to GFCI, can the present invention be equal to and be applied to AFCI and/or other such protective device.
Device 10 comprises the firewire contact 200 and the center line contact 20 of being coupled to ground fault sensor 100 and the neutral transducer 102 of ground connection.As shown in Figure 1, detector 104 is coupled in the output of transducer 100 and transducer 102.Detector 104 outputs (pin 7) are connected to the control input end of thyristor (SCR) SCR 106.Connecton layout 10 comprises tripping mechanism, and it comprises the ground fault sensor 100 and the neutral transducer 102 of ground connection that is coupled to detector 104.Detector 104 is coupled to thyristor (SCR) 106, and it is exported according to transducer (100,102) through detector 104 and controls.SCR 106 is coupled to solenoid 52.As SCR 106 during by detector 104 conductings, solenoid 52 energisings.The plunger that is arranged in solenoid 52 makes blocking mechanism 80 engagements, thereby opens the contact in the contact assembly 15.Contact assembly 15 is arranged between line terminal (20,200), face terminals (30,300) and the socket face terminals (42,48).Contact assembly 15 is configured to when blocking mechanism 80 is in reset mode, between line terminal (20,200), face terminals (30,300) and socket face terminals (42,48), sets up being electrically connected property.Contact assembly 15 is configured to when blocking mechanism 80 is in tripped condition, makes the connection of line terminal (20,200) disconnection and face terminals (30,300) and socket face terminals (42,48).
About contact mechanism 15, neutral terminal 20 is connected to contact member 24 and contact member 28. Contact member 24 and 28 operationally is coupled to blocking mechanism 80.In other words, when blocking mechanism 80 placed reset mode, linear load feedthrough terminal 30 and contact member 28 were connected to center line socket contact 42 with neutral terminal 20 during contact member 24 was connected to neutral terminal 20.When contact member 24 is electrically connected with contact 32 and contact member 28 when being electrically connected with contact member 46, connectivity is established.In addition, when solenoid 52 drove blocking mechanism 80 to tripped condition, contact member 24 and 28 was deflected the being electrically connected property of interrupting respectively with contact 32 and 46.
Movable contact assembly in the live wire conductive path is identical. Movable contact member 240 and 280 cooperates with fixed contact 320 and 460 respectively.When doing like this, be in reset mode or tripped condition according to blocking mechanism 80, they make this heat circuit terminal 200 and live wire load feedthrough terminal 300 and center line socket contact 48 electrical couplings/uncoupling.
Four usually said utmost point contact mechanisms of contact assembly 15 expressions shown in Figure 1.It will be apparent to one skilled in the art that the characteristic that realizes according to the machinery of device, contact assembly 15 of the present invention can be any suitable model.For example, contact assembly 15 can adopt cantilever type contact assembly, bridge construction, bus-bar setting, solid state device or any suitable contact mechanism.In four utmost points were provided with, socket face terminals and feedthrough terminal were electrically isolated from one under tripped condition, and being connected of disconnection and line terminal.
Device 10 also comprises the resetting device 60 that is coupled to blocking mechanism 80.As top brief description, locking 80 is driven into tripped condition through solenoid 52.In case fault is eliminated and the user recognizes that device 10 has tripped, then the user presses SR 60 with the service of recovering.When SR 60 was activated, blocking mechanism 80 was closed, and the contact that perhaps allows to be arranged in contact assembly 15 is closed, and thought that socket load and feedthrough load restart AC power supplies.
Device 10 comprises Electronic Testing (TEST) button 50.If install 10 true(-)runnings, then when testing button 50 was pressed by the user, blocking mechanism 80 was driven to trip position.Particularly, like the sketch map that Fig. 1 advised,, electric test button 50 produces the difference current of analogue ground fault when being activated by the user.When transducer 100 and detector 104 detected malfunction, tripping solenoid 52 was by igniting (fired).In response to this, open contact 32,46,320 and 460, being connected of open-circuit line, load and socket contact.
The present invention also comprises tripping operation indicating circuit 130.When device 10 tripping operations, activate trip indicator 130.Trip indicator 130 comprises parts R 9, R13, R14 and the D1 (LED) parallelly connected with switch S 5.When device 10 tripping operations, LED D1 is luminous.Yet when the contact resetted, the LED two ends did not have electrical potential difference and D1 not luminous.One of skill in the art will appreciate that indicating device 130 can comprise voice guard and lighting device.
A characteristic of the present invention relates to and is arranged on independent EOL function in end-of-life (EOL) circuit 120.EOL circuit 120 comprises resistor R 19-R25, testing button 50, SCR Q4 and diode D5.Resistor R 20-R22 and SCR Q4 form exclusive circuit.R21 and R22 are arranged on and are configured to control in the voltage divider of Q4 operation.R23 and R24 are coupled to Q4.R23 and R24 are the fusible resistors of mounted on surface, the activation of its control EOL mechanism.
When GFCI resets when producing the simulated failure through R25, the user presses testing button 50.Simultaneously, the 120VAC power supply is applied to fusible resistor R21.If GFCI is by proper operation, transducer 100, detector 104 and other GFCI circuit will respond this simulated failure and blocking mechanism 80 is tripped in about 25 microseconds.Even testing button 50 still is pressed, the simulated failure electric current of the R25 that flows through is terminated.Simultaneously, remove electric power from R21.
If the GFCI circuit not by proper operation, then can not trip in the above described manner.In response to applying continuously of AC power supplies, the resistance of fusible resistor R21 significantly increases, thereby changes the value of R21/R22 voltage divider.Conversely, the voltage at R20 and R19 two ends becomes and is enough to conducting Q4, and electric current begin to flow through R23 and R24.When electric power was continuously applied sufficiently long time period, the resistance value of resistor R 23 and R24 increased.This value will be increased to from thousands of ohms and surpass 10 megohms.As a result, R23 and R24 begin to overheat and make R23 and R24 are fixed to the solder failure on the printed circuit board (PCB) 12.Behind the solder fusing, resistor R 23 is replaced with R24, activates EOL contact 120.When the temperature of resistor R 23, R24 during, line terminal (20,200) and feedthrough face terminals (30,300) and socket face terminals (42,48) uncoupling greater than threshold value, and irrelevant with the state of circuit interruption contact 15.
One of skill in the art will appreciate that owing to resistor R 23, R24 parallel connection are provided with, so they generate heat respectively.Resistor R 23 is configured to open one of EOL contact 121, and resistor R 24 is configured to open separately another simultaneously.In alternate embodiment of the present invention, single fusible resistor is configured to heating and opens two EOL contacts 121.
In alternate embodiment, the testing button 50 ' that device 10 can comprise between the control input end that is arranged on power supply and SCR 106.When button 50 ' is pressed, SCR 106 conductings and install 10 the tripping operation.Like this, testing button 50 ' is checked the operability of SCR 106 and solenoid 52, but does not check the operability of transducer 100,102 or detector 104.The test signal that is produced by testing button 50 ' is not the simulation of external fault state.Switch 50 ' simply starting current with conducting SCR 106.If SCR 106 conductings and make tripping mechanism operation, EOL 120 mechanisms are not activated.If the tripping mechanism off-duty, then EOL 120 will operate.
As shown in Figure 1, testing button 50 is that independent user can touch button with SR 60.In alternate embodiment, test function can be incorporated into SR 60, resets/testing button to set up combination.The Fig. 4-6 that specifies below provides combination to reset/the mechanical implementation of testing button.In Fig. 4-6, test contact 5 " be coupled to SR, and can not directly touch by the user thus.Yet, when combination button is activated, close test contact 50 ".On the one hand, be in tripped condition if install 10, then combination button 60 is pressed and discharges with the aforementioned manner reset circuit and interrupts contact 15.Before device resets, close test contact 50 " to activate test period.If protective device can be operated, can not activate conventional circuit function and EOL mechanism 120.Yet if install 10 experience EOL states, this EOL mechanism 120 is activated, and face terminals and the permanent uncoupling of line terminal.Carry out EOL when each combination button is activated and confirm, whether reset this device or test are in the device of reset mode.The periodicity of this device is tested common requirement and is monthly carried out perhaps carrying out before at each this device that uses.Those skilled in the art should be further appreciated that testing button 50 ' (shown in Fig. 1) also can be incorporated into said combining structure.
Such as here embodiment and Fig. 2 described, the perspective view of EOL mechanism 120 shown in Figure 1 is disclosed.Resistor R 23 and R24 are welded to the downside of printed circuit board (PCB) (PCB) 12.Opening is arranged among the PCB 12 with R24 with resistor R 23 with aiming at.Resistor R 23 prevents that with R24 spring-loaded plunger 122 from extending through the opening 126 in the plate 12.Each plunger 122 is configured to support electrical connection bus-bar member 124.Each bus-bar 124 is coupled to contact assembly 15 with line terminal (20,200).As stated, when supporting the solder fusing of R23 and R24, spring-loaded plunger 122 is driven through the hole, the connection between disrupted circuit terminal and the face terminals.In case this thing happens, there is not mechanism's this device that resets.Therefore, changing device more.In alternate embodiment, resistor R 23, R24 are configured to melt also " to burn " open.The result is similar.Spring-loaded plunger 122 is driven through the hole, the connection between disrupted circuit terminal and the face terminals.
In alternate embodiment, EOL mechanism is an one pole mechanism, and it interrupts to the being electrically connected property of line terminal 20 or line terminal 200 (not shown).One of skill in the art will appreciate that in one pole is provided with the opening of one pole is used for ending from circuit to the load through-put power.
In an alternate embodiment again, end-of-life mechanism is arranged between face terminals and the circuit-breaker, as bipolar mechanism.In response to end-of-life status, the being electrically connected property between a utmost point disrupted circuit terminal and the corresponding feedthrough terminal.In response to end-of-life status, the being electrically connected property between another utmost point disrupted circuit terminal and the corresponding female terminal.
Referring to Fig. 3, the alternative schematic of electric device of the present invention is disclosed.This embodiment combines automatic testing circuit with the end-of-life circuit.This design can combine any one embodiment of the present invention to implement.The circuit that this circuit and Fig. 1 describe is similar, and end-of-life circuit/mechanism and above-mentioned show similar.
Device 10 comprises the firewire contact 200 and center line contact 20 that is coupled to ground fault sensor 100 and the neutral transducer 102 of ground connection.Ground fault sensor 100 is coupled to detector 104 with the neutral transducer 102 of ground connection.The neutral transducer 102 of ground connection comprises the saturable core 150 and winding 152 that is coupled to fire line terminal 200 and neutral terminal 20 respectively.One of skill in the art will appreciate that typical way is deliberately to make earthed neutral conductor terminal 20 be positioned at the service panel of distribution system.Under the ground connection neutral state of reality, center line face terminals 30 is ground connection inadvertently.
Ground connection neutral fault state and through through the final path of terminal 20 and 30 ground connection can be simulated through electric loop 154.When electric loop 154 was closed, saturable core 150 is the induced current spike in electric loop 154.The reverse in magnetic field is with respect to the zero passage in the AC power supplies in the core 150.The reverse in magnetic field has produced current spike.During the negative half-cycle part of AC power supplies, the current spike that during negative zero crossing excessively, produces produces a signal.This signal is sensed to be differential signal through ground fault sensor 100, and is detected by ground fault detector 104.As response, SCR 106 makes solenoid 52 can make blocking mechanism 80 tripping operations.
When switch 156 conductings, realize the analogue ground neutral state, thus close loop 154.At negative half-cycle, control circuit 158 actuating switchs 156.Therefore, partly produce current spike in the negative half-cycle part of AC power supplies signal rather than at positive half period.Notice that though the output 162 of ground fault detector 104 is attempted activating SCR 106, it is not accomplished, because SCR 106 is at the negative half-cycle reverse bias.As a result, the simulated failure test can not conducting SCR 106.Yet EOL check circuit 160 uses judges from the output signal 162 of ground fault detector 104 whether end-of-life status produces.In response to real earth fault or ground connection neutral state, ground fault detector 104 sends signal to SCR 106, to activate solenoid 52, makes blocking mechanism 80 partly trip at the positive half period of AC power supplies.
In alternate embodiment, device 10 comprises switch 156 ', as the parts of automatic simulation earth fault.Device 10 can combine one or two of these test functions.The earth fault test occurs in the negative half-cycle of AC power supplies equally.Those skilled in the art are familiar with the analog signal of any amount, and it can be used to confirm the mode of operation of device by the EOL circuit.
It will be apparent to one skilled in the art that any suitable device may be used to implement switch 156 (156 ').For example, switching mechanism 156 (156 ') can use the MOSFET device to realize, for example, is designed to MPF930 and by the device of ON semiconductor manufacturing.In another embodiment, switch 156 (156 ') can be integrated in the ground fault detector 104 by monolithic.
When introducing the analogue ground neutral state in the above described manner, partly the test acknowledge(ment) signal is provided for delayer 164 at the negative half-cycle of AC power supplies.Delayer 164 is included in the transistor 166 that makes capacitor 168 discharges when receiving the test acknowledge(ment) signal.At the remainder of AC line cycle, be capacitor 168 chargings through resistor 172 by power supply 170.In addition, if in GFCI 10, have internal fault, then do not produce test acknowledge(ment) signal and transistor 166 not conductings.As a result, capacitor 168 continues charging till reaching predetermined voltage.At the predetermined voltage place, partly activate SCR 174 at the positive half period of AC power supplies signal.As response, solenoid 52 is urged to tripped condition with blocking mechanism 80.
Notice that ground fault detector 104 obtains electric power with check circuit 160 from power supply 170.Can increase redundant component, if make parts arrive end-of-life, then other parts can also keep the operation of ground fault detector 104, thereby have improved reliability, have perhaps guaranteed the continued operation of check circuit 160 at least.For example, the resistor in the power supply 172 can have resistors in parallel by device.As another example, can comprise resistor 176, to prevent supply voltage collapse when ground fault detector 104 short circuits.Obviously, if the supply voltage collapse can prevent that then delayer 168 from sending the signal of end-of-life status.The present invention should not be understood that to be limited to aforementioned exemplary, one of skill in the art will appreciate that a plurality of redundant components can be included in the device 10.
If blocking mechanism 80 and/or solenoid 52 experience end-of-life status, then check circuit 160 is invalid.For example, solenoid 52 can have electric discontinuity.Through SCR174 being connected to end-of-life terminal resistor R23, R24 rather than being connected to solenoid 52, can get rid of this fault mode through the present invention.This embodiment is illustrated by dotted line 178.Certainly, EOL resistor R 23, R24 front were described.When end-of-life, SCR 174, causes EOL contact 121 forever line terminal to be broken off with face terminals and is connected so that they are out of order through R23, R24 conduction current.
The removal of resistor R 23, R24 causes the load-side of device 10 and the permanent uncoupling of AC power supplies.Therefore, importantly, the removal of resistor (or burning) only takes place when the real EOL state of response, is not because some interference environment, for example transient state electrical noise.For example, SCR 174 can the conducting in response to the transient noise incident.Yet, can comprise coupling diode 180 with under the EOL of mistake state to resistor R 23, R24 uncoupling.When SCR 174 conductings, coupling diode 180 allows SCR 174 to activate solenoid 52.Blocking mechanism 80 tripping operation is so resistor R 23, R24 are broken off from power supply and being connected.As before embodiment such, install 10 and comprise trip indicator 182, it can be can listen and/or visual detector.
The present invention can comprise the EOL indicating device, and it is activated when device 10 reaches end-of-life.EOL indicating device 183 is arranged on 121 two ends, contact.Certainly, before end-of-life status took place, 121 two ends, contact did not have electrical potential difference.Yet, when open in response to end-of-life status contact 121, activate EOL indicating device 183.It will be appreciated by those skilled in the art that indicating device 183 can comprise voice guard and luminescent device.Indicating device 183 is launched stable output, perhaps astable output, for example buzzer or flash of light when end-of-life.
Referring to Fig. 4, the detailed view of blocking mechanism 80 is according to an embodiment of the invention disclosed.In Fig. 4, separate with two load cantilevers contact 32 contact 24 that is arranged on the center line cantilever 21, and socket contact 46 is fixed on tripped condition.Certainly, center line cantilever 21 is coupled to neutral terminal 20.Two load cantilevers contact 32 is connected to cantilever 31, and cantilever 31 is connected to center line feedthrough terminal 30 again.Through being applied downward power, SR 60 realizes resetting.Reset shoulder 1400 on the pin 824 to lower stress.In the described embodiment of Fig. 4, show test contact 50 ' (50 ").One of skill in the art will appreciate that and under the situation that does not combine test contact 50 ' (50 "), to realize blocking mechanism 80 and resetting device 60.Yet in Fig. 4, pin 824 is gone up to lower stress to realize test loop at switch 50 ' (50 ").
In Fig. 5, still separate center line contact 24, load contact 32 and fixed socket contact 46.On the other hand, fully close switch 50 ' (50 ") to produce the simulated failure state.The simulated failure signal is caused solenoid 52 to activate armature 51 by sensing and detection.Armature 51 along shown in direction move, allow the hole 828 in the locking 826 to aim at shoulder 1400.Because no longer receive shoulder 1400 restrictions, the downward power that is applied to combination button 60 causes shoulder 1400 to continue to move down.
Referring to Fig. 6,, can not apply downward power to locking 826 because shoulder 1400 is provided with under the locking 826.Therefore, switch 50 ' (50 ") is opened and is caused test signal to stop.As a result, solenoid 52 de-energisations.Armature 51 be applied in locking escapement 830 in response to the bias force of spring 834 and locking 826 and along shown in direction move.As a result, device 10 resets closing contact 24,32 and 46.In addition, EOL mechanism 120 is not activated, because switch 50 ' (50 ") only continue to make the time of device 10 tripping operations closed, promptly about 25 microseconds.This time for activating EOL mechanism is too short.
On the other hand, if the circuit of protective device 10 experience EOL state, then armature 51 does not move in response to the closure of switch 50 ' (50 ").Shoulder 1400 continues longer basically time of trip time that devices estimate and continues maintained switch 50 ' (50 ") closure, that is, and at least 500 microseconds.Therefore, EOL mechanism 120 is configured to activate with aforementioned manner.If the blocking mechanism of protective device 10 80 experience EOL states, for example, because dirt or corrosion, armature 51 or locking 826 can not be moved, and switch 50 ' (50 ") will continue the longer basically time of trip time that ratio device estimates and remain closed.Therefore, EOL state and the mechanical EOL state in the device 10 response GFCI circuit.
If be provided with switch 50 ' (50 "), can touch the button (not shown) through the user of being coupled to locking 826 and make blocking mechanism 80 tripping operations.When button was pressed, locking 826 was moved along direction shown in Figure 5, thereby caused mechanism's tripping operation.As stated, resetting of blocking mechanism 80 can be realized through pressing SR 60.
It will be apparent to one skilled in the art that under situation without departing from the spirit and scope of the present invention, can carry out various modifications and modification the present invention.Therefore, the present invention is intended to cover modification and the modification that is provided in accompanying claims of the present invention and the equivalent scope.
Claims (14)
1. protecting cloth line apparatus that is used for distribution system, said device comprises:
A plurality of line terminals, it comprises fire line terminal and neutral terminal;
A plurality of face terminals, it comprises a plurality of feedthrough face terminals and a plurality of socket face terminals;
Failure detector circuit, it is coupled to said a plurality of line terminal, and said failure detector circuit is configured in response to detecting at least one predetermined perturbation in the said distribution system fault detection signal is provided;
Actuator, it is coupled to said failure detector circuit, and said actuator devices is configured to provide actuator to encourage in response to said fault detection signal or in response to the Electronic Testing malfunction that realizes;
Resetting device, it comprises that the user who is coupled to mechanical connection can touch button;
Circuit-breaker; It is coupled to said actuator devices and said resetting device; Said circuit-breaker comprises that four groups interrupt the contact, and said four groups of interruption contacts are configured under reset mode, between said a plurality of line terminals and said a plurality of face terminals, being electrically connected property is provided, and is configured under tripped condition, interrupt said being electrically connected property; When meshing said circuit-breaker when user's actuating that can touch button in response to said user and through mechanical connection; Realize said reset mode, when in response to the excitation of said actuator with said circuit-breaker when said mechanical connection breaks off, realize said tripped condition;
Testing equipment; It comprises test circuit; Said test circuit is configured to periodically produce not at least one first test signal of executive software instruction; Said at least one first test signal is configured to cause the simulated failure corresponding to said at least one predetermined perturbation, and said testing equipment also comprises the manual test circuit that is configured to produce second test signal;
The test observation circuit; It operates and is coupled to said failure detector circuit and said actuator under the situation of not executive software instruction; Said test observation circuit is configured to realize the Electronic Testing proofing state in response to receiving corresponding to the said fault detection signal of said first test signal; And do not realize said Electronic Testing proofing state in response in first predetermined amount of time, detecting corresponding to the said fault detection signal of said first test signal; Fail in response to said Electronic Testing malfunction or fail to realize tripped condition if said test observation circuit is configured to said circuit-breaker, then realize the life-span stop detection state in response to detecting the fault in the said actuator devices; And
The end-of-life circuit unit, it is coupled to said test observation circuit, and said end-of-life circuit unit is configured in response to said life-span stop detection state said a plurality of line terminals and said a plurality of face terminals uncoupling.
2. device as claimed in claim 1; It is characterized in that said test observation circuit comprises timer circuit; Said timer circuit is configured to measure the time in the past;, and it is characterized in that said Electronic Testing proofing state resetted to the time in said past of being measured by said timer circuit when the said timer circuit of the said first predetermined amount of time past tense produces said Electronic Testing malfunction.
3. according to claim 1 or claim 2 device is characterized in that said four groups of parts of interrupting contacts make said a plurality of feedthrough face terminals and the uncoupling of said a plurality of socket face terminals under said tripped condition.
4. device as claimed in claim 1 is characterized in that also comprising auxiliary switch, and said auxiliary switch is included in to be opened under the said tripped condition and closed at least one group of contact under said reset mode.
5. device as claimed in claim 4; It is characterized in that said failure detector circuit is coupled to said a plurality of line terminal through said auxiliary switch; When said auxiliary interruption contact was in said open mode, the feasible amount of the electric power of said failure detector circuit that is applicable to reduced basically.
6. like claim 4 or 5 described devices, it is characterized in that when said auxiliary switch is in open mode that said failure detector circuit receives the electric power from said a plurality of line terminals through indicator circuit, said indicator circuit comprises trip indicator.
7. like each the described device in the claim 1,2,4 or 5; It is characterized in that said failure detector circuit is coupled into from said a plurality of line terminals reception electric power; Thereby under said tripped condition, the feasible amount of the electric power of said failure detector circuit that is applicable to reduces basically.
8. like each the described device in the claim 1,2,4 or 5; It is characterized in that said end-of-life circuit unit comprises the end-of-life circuit that is coupled to end-of-life interrupt mechanism, said end-of-life interrupt mechanism is independent of said circuit-breaker operation basically.
9. device as claimed in claim 8 is characterized in that also comprising coupling interface, its be configured to selectivity with said end-of-life interrupt mechanism be coupled to said end-of-life circuit or with the uncoupling of said end-of-life circuit.
10. like each the described device in the claim 1,2,4 or 5, it is characterized in that said end-of-life circuit unit is coupled to said a plurality of line terminal through solenoid.
11. device as claimed in claim 10 is characterized in that said end-of-life circuit unit is coupled to said a plurality of line terminal through low pass filter, said low pass filter comprises said solenoidal inductance and capacitor.
12. like each the described device in the claim 1,2,4 or 5; It is characterized in that said actuator comprises first thyristor that is coupled to tripping solenoid, and said end-of-life circuit unit comprises second thyristor that is coupled to said tripping solenoid.
13., it is characterized in that said actuator comprises solenoid or electronic switching device like each the described device in the claim 1,2,4 or 5.
14. a distribution system, it comprises like each the described protecting cloth line apparatus in the aforementioned claim.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US82887110A | 2010-07-01 | 2010-07-01 | |
| US12/828,871 | 2010-07-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202353192U true CN202353192U (en) | 2012-07-25 |
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ID=46582459
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202710736U Expired - Fee Related CN202353192U (en) | 2010-07-01 | 2011-07-01 | Wiring protecting device for power distribution system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202353192U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106063066A (en) * | 2014-01-15 | 2016-10-26 | 豪倍公司 | Self-test GFCI device with dual solenoid coil electronic control |
| CN108336944A (en) * | 2017-01-19 | 2018-07-27 | 爱信精机株式会社 | Controller and transfer for actuator |
| CN110690682A (en) * | 2018-07-06 | 2020-01-14 | 帕西·西姆公司 | Circuit and method for rejecting power to a solenoid in an electrical wiring device |
| CN112534667A (en) * | 2018-07-25 | 2021-03-19 | 豪倍公司 | System and method for identifying arcing in electrical wiring |
| CN115327192A (en) * | 2021-05-11 | 2022-11-11 | 宝华电器(深圳)有限公司 | Test the protection circuit |
-
2011
- 2011-07-01 CN CN2011202710736U patent/CN202353192U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106063066A (en) * | 2014-01-15 | 2016-10-26 | 豪倍公司 | Self-test GFCI device with dual solenoid coil electronic control |
| CN106063066B (en) * | 2014-01-15 | 2020-03-10 | 豪倍公司 | Self-testing GFCI device with dual solenoid coil electronic control |
| CN108336944A (en) * | 2017-01-19 | 2018-07-27 | 爱信精机株式会社 | Controller and transfer for actuator |
| CN108336944B (en) * | 2017-01-19 | 2022-10-11 | 株式会社爱信 | Controller for actuator and steering device |
| CN110690682A (en) * | 2018-07-06 | 2020-01-14 | 帕西·西姆公司 | Circuit and method for rejecting power to a solenoid in an electrical wiring device |
| CN110690682B (en) * | 2018-07-06 | 2022-08-05 | 帕西·西姆公司 | Circuit and method for rejecting power to a solenoid in an electrical wiring device |
| CN112534667A (en) * | 2018-07-25 | 2021-03-19 | 豪倍公司 | System and method for identifying arcing in electrical wiring |
| CN115327192A (en) * | 2021-05-11 | 2022-11-11 | 宝华电器(深圳)有限公司 | Test the protection circuit |
| CN115327192B (en) * | 2021-05-11 | 2024-11-19 | 宝华电器(深圳)有限公司 | Testing protection circuits |
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| 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: 20120725 Termination date: 20130701 |