CN102570379A - Method for realizing serial connection work of direct current shunt tripping device and direct current middle relay - Google Patents
Method for realizing serial connection work of direct current shunt tripping device and direct current middle relay Download PDFInfo
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Abstract
The invention relates to a method for realizing the serial connection work of a direct current shunt tripping device and a direct current middle relay. The method comprises the following steps that: after a press button switch connected in parallel with the direct current middle relay is switched on, the direct current input total voltage of a serial connection circuit is equal to the direct current input voltage of the direct current shunt tripping device; when the direct current input voltage is greater than 70 percent of the rated voltage Ue of the direct current shunt tripping device, a false load resistor in a hysteresis false load control circuit is switched off, and meanwhile, after a voltage detection and pulse forming circuit detects that the direct current input voltage is grater than 70 percent of the rated voltage Ue, and a single-time pulse signal lasting 50 to 60ms is generated; and the single-time pulse signal is amplified through a driving circuit, then, a shunt electromagnetic coil is controlled to be electrified and conducted, an armature arranged in the direct current shunt tripping device works, and the switch-off operation is realized. When the condition that the direct current input voltage is smaller than 10 percent of the rated voltage is detected, the pulse signals are not generated, and the shunt electromagnetic coil is not conducted.
Description
Technical field
The present invention relates to the method for a kind of direct current shunt release and the tandem working of direct current auxiliary relay.
Background technology
Shunt release is used to receive remote operation voltage, is the core component of realizing low-voltage circuit breaker " control far away " separating brake.Like the loop that fire-fighting in civil buildings need have a power failure, can select the circuit breaker of band shunt release for use, fire protection alarm system can be at the fire-fighting center through module or cable far distance controlled breaker open operation etc.
Existing direct current shunt release all is a short time duty, can not connect (manipulation) power supply for a long time, and generally can not surpass 1 second conduction time, otherwise very easily burn the coil in the shunt opening electromagnet coil; In addition; If the direct current auxiliary relay is connected with the direct current shunt release; Because the brownout that the series connection dividing potential drop causes this direct current auxiliary relay to obtain, this direct current auxiliary relay can't operate as normal, thus the direct current shunt release can't with the tandem working of direct current auxiliary relay.
Summary of the invention
The technical problem that the present invention will solve provide a kind of can with the tandem working of direct current auxiliary relay, and the method for the direct current shunt release that can switch on for a long time and the tandem working of direct current auxiliary relay.
For solving the problems of the technologies described above, the method for direct current shunt release provided by the invention and the tandem working of direct current auxiliary relay comprises:
A, after the push-button switch that is parallel to the direct current auxiliary relay is connected; Said direct current auxiliary relay equates with the DC input voitage of said direct current shunt release with the direct current input total voltage of the series circuit that the direct current shunt release constitutes, and hysteresis dummy load control circuit, voltage detecting and pulse shaping circuit, shunt opening electromagnet coil in said direct current shunt release provide access voltage; When said DC input voitage greater than the rated voltage Ue of said direct current shunt release 70% the time; Break off the dummy resistance in the said hysteresis dummy load control circuit; Simultaneously said voltage detecting and pulse shaping circuit detect said DC input voitage greater than rated voltage Ue 70% after, produce one continue 50-60ms the single pulse signal; This single pulse signal is after overdrive circuit amplifies, and control shunt opening electromagnet coil must conduct, and the armature work in the then said direct current shunt release realizes the separating brake action;
B, unclamp when said push-button switch; Then said DC input voitage is less than 50% of said rated voltage Ue; Said hysteresis dummy load control circuit inserts dummy resistance; So that said DC input voitage drop to said direct current input total voltage Ui 10% in, and make said direct current auxiliary relay operate as normal; And said voltage detecting and pulse shaping circuit detect said DC input voitage 10% o'clock less than rated voltage Ue, do not produce said pulse signal, the not conducting of then said shunt opening electromagnet coil.
Said direct current shunt release comprises: first, second contact, drive circuit and shunt opening electromagnet coil, voltage detecting and pulse shaping circuit and hysteresis dummy load control circuit; The DC input voitage that this hysteresis dummy load control circuit is suitable for obtaining at the direct current shunt release was greater than 70% o'clock of this direct current shunt release rated voltage Ue; Break off dummy resistance; In said DC input voitage 50% o'clock less than said rated voltage Ue; Insert dummy resistance, so that said DC input voitage is no more than 10% of direct current input total voltage; Said first contact links to each other with the current input terminal of said hysteresis dummy load control circuit, said power circuit, said voltage detecting and pulse shaping circuit and an end of said shunt opening electromagnet coil respectively; Said second contact links to each other with the earth terminal of said hysteresis dummy load control circuit, the said voltage detecting of said power circuit and pulse shaping circuit, said drive circuit respectively; When said input voltage value greater than said rated voltage Ue 70% the time; Said voltage detecting and pulse shaping circuit produce the single pulse signal; After this pulse signal amplifies through said drive circuit; Be linked into the current output terminal of said shunt opening electromagnet coil, so that this shunt opening electromagnet coil conducting.
Further; In order effectively to control the dummy load circuit; Reduce the input voltage that this direct current shunt release obtains; Guarantee that institute's series direct current auxiliary relay has enough voltage operate as normal, said hysteresis dummy load control circuit comprises: first contact, said first contact link to each other with an end of dummy resistance, first resistance respectively; And the other end of said dummy resistance links to each other with the collector electrode of first triode; The other end of said first resistance links to each other with an end of second resistance, the 3rd resistance respectively, and the other end of said second resistance links to each other with the base stage of said first triode and the collector electrode of second triode respectively, and each grounded emitter of said first, second triode; The negative electrode of another termination first voltage-stabiliser tube of said the 3rd resistance, the anode of this first voltage-stabiliser tube connects the base stage of said second triode.
Further, in order simple, effectively to produce the single pulse signal that drives the work of shunt opening electromagnet coil, said voltage detecting and pulse shaping circuit comprise voltage detecting circuit, pulse shaping circuit; Said voltage detecting circuit comprises: said first contact links to each other with an end of the 4th resistance; One end of the other end of said the 4th resistance and the 5th resistance and the reference utmost point of the adjustable shunting a reference source of the one or three end in the said pulse shaping circuit; An and end of first electric capacity is continuous, and the other end ground connection of said first electric capacity; The other end of said the 5th resistance links to each other with an end of the 6th resistance and the drain electrode of FET respectively; And the other end of said the 6th resistance links to each other with the source electrode of said FET and ground connection, and the grid of said FET links to each other with the negative electrode of the adjustable shunting a reference source of said the one or three end; Said pulse shaping circuit comprises: a termination DC power supply of the 7th resistance, the 8th resistance, the 9th resistance, the tenth resistance; The other end of said the 7th resistance links to each other with the negative electrode of the adjustable shunting a reference source of said the one or three end and an end of second electric capacity respectively, and the plus earth of the adjustable shunting a reference source of said the one or three end; The other end of said the 8th resistance extremely links to each other with the other end of said second electric capacity and the reference of the adjustable shunting a reference source of the two or three end respectively; The other end of said the 9th resistance links to each other with the negative electrode of the adjustable shunting a reference source of said the two or three end and the base stage of the 3rd triode respectively, and the plus earth of the adjustable shunting a reference source of said the two or three end; The other end of said the tenth resistance links to each other with the collector electrode of said the 3rd triode and as the output of pulse signal; And the emitter of said the 3rd triode links to each other with the negative electrode of second voltage-stabiliser tube, the plus earth of said second voltage-stabiliser tube.
Further, in order to prevent interference signal, a parallelly connected electric capacity between said first, second contact.
Further; In order to prevent that DC input voitage polarity from connecing instead; Said direct current shunt release also comprises a diode; And the anode of this diode links to each other with said first contact, and the negative electrode of said diode links to each other with the current input terminal of said hysteresis dummy load control circuit, power circuit, voltage detecting and pulse shaping circuit and the current input terminal of said shunt opening electromagnet coil respectively.
Said hysteresis dummy load control circuit adopts two triodes and a voltage-stabiliser tube and several resistance to form, and it is simple to have a circuit structure, and the advantage of good reliability is applicable to other control circuits.
Said voltage detecting and pulse shaping circuit; For forming single pulse; Circuit structure is simple, and the cycle is controlled easily, and the charge circuit time constant that the cycle of the pulse signal that produces is made up of the 8th resistance and second electric capacity is confirmed; So good stability need produce the circuit of pulse signal applicable to other.
The present invention has the following advantages: (1) make the direct current shunt release can with the tandem working of direct current auxiliary relay, widened the scope of application of direct current shunt release; (2) owing to contain hysteresis dummy load control circuit, thus the direct current shunt release is switched on for a long time, and guaranteed that the direct current auxiliary relay of being connected has reliable work voltage; (3) inside has voltage detecting and pulse shaping circuit, the single pulse signal stabilization that this circuit produces, and periodic Control is simple, can not burn the shunt opening electromagnet coil, after overdrive circuit, can effectively make the work of shunt opening electromagnet coil control armature; (4) this direct current shunt release can also independently be used for other DC input voitage occasions; (5) this direct current shunt release circuit is simple, with low cost, reliability is high.
Description of drawings
For content of the present invention is more clearly understood, below basis specific embodiment and combine accompanying drawing, the present invention is done further detailed explanation, wherein
Fig. 1 is of the present invention and the structural representation of the direct current shunt release of direct current auxiliary relay tandem working;
Fig. 2 is the circuit theory diagrams of said hysteresis dummy load control circuit of the present invention;
Fig. 3 is the circuit theory diagrams of said voltage detecting of the present invention and pulse shaping circuit.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is elaborated:
The parameter designing of direct current shunt release of the present invention meets the important technological parameters that low voltage switchgear and control appliance standard: GB14048.1-2006 and GB14048.2-2008 have defined release.Under the requirement of this standard, the following examples of giving an example describe.
Embodiment 1
See Fig. 1-2; Present embodiment be suitable for the direct current shunt release with the tandem working of direct current auxiliary relay; The anode of input total voltage Ui inserts from said direct current auxiliary relay, the first contact 1-1 of this direct current auxiliary relay and said direct current shunt release 7, and its second contact 1-2 links to each other with the negative terminal of said input total voltage Ui; The DC input voitage that said direct current shunt release obtains is Ui ', and button switch K is in said direct current auxiliary relay parallel connection.
Said direct current shunt release comprises: first, second contact 1-1,1-2, drive circuit 4 and shunt opening electromagnet coil 5, voltage detecting and pulse shaping circuit 3 and hysteresis dummy load control circuit 1; The DC input voitage Ui ' that this hysteresis dummy load control circuit 1 is suitable for obtaining at direct current shunt release 7 was greater than 70% o'clock of this direct current shunt release 7 rated voltage Ue; Break off dummy resistance JFZ1; In said DC input voitage Ui ' 50% o'clock less than said rated voltage Ue; Insert dummy resistance JFZ1, so that said DC input voitage Ui ' is no more than 10% of direct current input total voltage Ui; The said first contact 1-1 links to each other with said hysteresis dummy load control circuit 1, power circuit 2, voltage detecting and the current input terminal of pulse shaping circuit 3 and the current input terminal of said shunt opening electromagnet coil 5 respectively; The said second contact 1-2 links to each other with the earth terminal of said hysteresis dummy load control circuit 1, power circuit 2, voltage detecting and pulse shaping circuit 3, drive circuit 4 respectively; When said input voltage value Ui ' greater than said rated voltage Ue 70% the time; Said voltage detecting and pulse shaping circuit 3 produce the single pulse signal; After this pulse signal amplifies through said drive circuit 4; Be linked into the other end of said shunt opening electromagnet coil 5, so that these shunt opening electromagnet coil 5 conductings.
Direct current input total voltage Ui is 110V, 220V; Dummy resistance JFZ1 is 510 Ω/1W, and the first resistance R D1 is 100k Ω, and the second resistance R D2 is 39K Ω, and the 3rd resistance R D3 is 20K Ω; It is 43V that the voltage stabilizing value of the first voltage-stabiliser tube ZD1 is also referred to as the voltage-stabiliser tube puncture voltage.
See Fig. 2; Said hysteresis dummy load control circuit 1 comprises: the first contact 1-1; The said first contact 1-1 links to each other with the end of dummy resistance JFZ1, the first resistance R D1 respectively; And the other end of said dummy resistance JFZ1 links to each other with the collector electrode of the first triode TD1; The other end of the said first resistance R D1 links to each other with the end of the second resistance R D2, the 3rd resistance R D3 respectively, and the other end of the said second resistance R D2 links to each other with the base stage of the said first triode TD1 and the collector electrode of the second triode TD2 respectively, and each grounded emitter of said first, second triode TD1, TD2; The negative electrode of another termination first voltage-stabiliser tube ZD1 of said the 3rd resistance R D3, the anode of this first voltage-stabiliser tube ZD1 connects the base stage of the said second triode TD2.
For the state of " identification " button switch K (or contact of other control appliances) " pressing " with " unclamping ", a kind of form of the hysteresis dummy load control circuit 1 of design is seen Fig. 2 in the present invention.Suppose DC input voitage Ui ' that said direct current shunt release obtains 70%, the first resistance R D1 and first resistance R D2 composition potential-divider network greater than said direct current shunt release rated voltage Ue, node 1. voltage is higher than the voltage of the first voltage-stabiliser tube ZD1; The said first voltage-stabiliser tube ZD1 is breakdown; By forming the second triode TD2 base current after the 3rd resistance R D3 current limliting, the second triode TD2 conducting, 2. node is low level; The first triode TD1 ends, and dummy resistance JFZ1 is disconnected.Otherwise; Suppose that said DC input voitage Ui ' is less than 50% of said rated voltage Ue; Node 1. voltage is lower than the puncture voltage of the first voltage-stabiliser tube ZD1, and the said first voltage-stabiliser tube ZD1 can not be breakdown, and said the 3rd resistance R D3 can not produce the base current of the second triode TD2; The said second triode TD2 ends, and 2. node is high level.Said DC input voitage Ui ' forms the base current of the said first triode TD1 behind said first, second resistance R D1, RD2; The said first triode TD1 conducting; Said dummy resistance JFZ1 is inserted, and said DC input voitage Ui ' is pulled down to and is not more than 10% direct current input total voltage Ui.Guarantee that leading portion direct current auxiliary relay obtains 90% Ui and reliable adhesive.
Said power circuit 2 is a circuit that 15V or 12V direct-current working volts Vcc can be provided, and offers said voltage detecting and pulse shaping circuit 3 and said drive circuit 4, and this circuit can adopt prior art to accomplish.
See Fig. 3, said voltage detecting and pulse shaping circuit 3 comprise voltage detecting circuit 3-1, pulse shaping circuit 3-2; Said voltage detecting circuit 3-1 comprises: the said first contact 1-1 links to each other with an end of the 4th resistance R 1; The reference utmost point of the adjustable shunting a reference source of the one or three end T1 among one end of the other end of said the 4th resistance R 1 and the 5th resistance R 2 and the said pulse shaping circuit 3-2; An and end of first capacitor C 1 is continuous, and the other end ground connection of said first capacitor C 1; The other end of said the 5th resistance R 2 links to each other with an end of the 6th resistance R 3 and the drain electrode of FET T2 respectively; And the other end of said the 6th resistance R 3 links to each other with the source electrode of said FET T2 and ground connection, and the grid of said FET T2 links to each other with the negative electrode of the adjustable shunting a reference source of said the one or three end T1; Said pulse shaping circuit 3-2 comprises: respectively from a termination DC power supply of the 7th resistance R 4, the 8th resistance R 5, the 9th resistance R 6, the tenth resistance R 7; The other end of said the 7th resistance R 4 links to each other with the negative electrode of the adjustable shunting a reference source of said the one or three end T1 and an end of second capacitor C 2 respectively, and the adjustable shunting a reference source of said the one or three end T1 plus earth; The other end of said the 8th resistance R 5 extremely links to each other with the other end of said second capacitor C 2 and the reference of the adjustable shunting a reference source of the two or three end T3 respectively; The other end of said the 9th resistance R 6 links to each other with the negative electrode of the adjustable shunting a reference source of said the two or three end T3 and the base stage of the 3rd triode T4 respectively, and the plus earth of the adjustable shunting a reference source of said the two or three end T3; The other end of said the tenth resistance R 7 links to each other with the collector electrode of said the 3rd triode T4 and as the output of pulse signal; And the emitter of said the 3rd triode T4 links to each other with the negative electrode of the second voltage-stabiliser tube T5, the plus earth of the said second voltage-stabiliser tube T5.
See Fig. 3; Suppose said DC input voitage Ui ' less than 70% of said rated voltage Ue, through said the 4th resistance R 1, said the 5th resistance R 2 dividing potential drops, said first capacitor C 1 filtering level and smooth back (node 3.) voltage is less than the reference voltage of energy gap reference comparator said the one or three end adjustable shunting a reference source T1 (TL431); The adjustable shunting a reference source of said the one or three end T1 is an off-state; 4. node is high level, said FET (metal-oxide-semiconductor) T2 conducting, and said the 6th resistance R 3 is by short circuit.When the value of said DC input voitage Ui ' greater than said rated voltage Ue 70% after; Node voltage 3. is higher than the reference voltage of the adjustable shunting a reference source of said the one or three end T1; The adjustable shunting a reference source of said the one or three end T1 is a conducting state by the off-state upset, and 4. node sports low level.This makes said FET T2 break off on the one hand, and said the 6th resistance R 3 resistance add the branch hydraulic circuit of VH, forms " hysteresis ", for doing the preparation that resets next time when said DC input voitage Ui ' is less than 30%*Ue.Because said second capacitor C, 2 voltage can not be suddenlyd change, when 4. node sported low level, 5. node also sported low level on the other hand; The adjustable shunting a reference source of said the two or three end T3 ends; 6. node is high level, and said direct-current working volts VCC is the base current of 15V (or 12V) voltage through said the 3rd triode T4 of said the 9th resistance R 6 formation, said the 3rd triode T4 saturation conduction; 7. node is low level, and a control impuls cycle begins.Simultaneously after 4. node sports low level; Said 15V direct-current working volts charge to C2 through said the 8th resistance R 5; Node 5. current potential constantly raises behind the built-in comparison reference voltage that is higher than the adjustable shunting a reference source of said the two or three end T3; The adjustable shunting a reference source of said the two or three end T3 conducting, 6. node overturns and is low level.Because the emitter at said the 3rd triode T4 links to each other with the said second voltage-stabiliser tube T5 negative electrode; Low level after 6. node overturns is less than the said second voltage-stabiliser tube T5 voltage stabilizing value, and then said the 3rd triode T4 ends, and 7. node returns high level; Accomplished the one-period pulse; And this burst length is 50-60ms, and the cycle of this pulse just is 50-60ms, and the time weak point can not burn said shunt opening electromagnet coil 5.Obviously, PRT mainly contains the charge circuit time constant that said the 8th resistance R 5, said second capacitor C 2 form and confirms.
The 4th resistance R 1 is 1M Ω, and the 5th resistance R 2 is 12K Ω, and the 6th resistance R 3 is 16K Ω, and the 8th resistance R 5 is 510k Ω, and second capacitor C 2 is 220nf; The one or three end is adjustable shunting a reference source T1, the two or three end is adjustable, and shunting a reference source T3 is TL431.
See Fig. 1, a parallelly connected capacitor C 0 between said first, second contact 1-1,1-2.
See Fig. 1; Establish a diode D1 in the described direct current shunt release; And the anode of this diode links to each other with the said first contact 1-1, and the negative electrode of said diode links to each other with said hysteresis dummy load control circuit 1, power circuit 2, voltage detecting and the current input terminal of pulse shaping circuit 3 and the current input terminal of said shunt opening electromagnet coil 5 respectively.
See Fig. 1-3, the method for work of the foregoing description 1 described direct current shunt release 7 comprises:
A, after the button switch K that is parallel to direct current auxiliary relay 6 is connected; Said direct current auxiliary relay equates with the DC input voitage Ui ' of said direct current shunt release with the direct current input total voltage Ui of the series circuit that the direct current shunt release constitutes, and hysteresis dummy load control circuit 1, voltage detecting and pulse shaping circuit 3, shunt opening electromagnet coil 5 in said direct current shunt release provide access voltage; When said DC input voitage Ui ' greater than the rated voltage Ue of said direct current shunt release 70% the time; Break off the dummy resistance JFZ1 in the said hysteresis dummy load control circuit 1; Simultaneously said voltage detecting and pulse shaping circuit 3 detect said DC input voitage Ui ' greater than rated voltage Ue 70% after, produce one continue 50-60ms the single pulse signal; This single pulse signal is after overdrive circuit 4 amplifies, and control shunt opening electromagnet coil 5 must conduct, and the armature work in the then said direct current shunt release 7 realizes the separating brake action;
B, unclamp when said button switch K; Then said DC input voitage Ui ' is less than 50% of said rated voltage Ue; Said hysteresis dummy load control circuit 1 inserts dummy resistance JFZ1; So that said DC input voitage Ui ' drop to said direct current input total voltage Ui 10% in, and make said direct current auxiliary relay 6 operate as normal; And said voltage detecting and pulse shaping circuit 3 detect said DC input voitage Ui ' 10% o'clock less than rated voltage Ue, do not produce said pulse signal, then said shunt opening electromagnet coil 5 not conductings.
Obviously, the foregoing description only be for clearly the present invention is described and is done for example, and be not to be qualification to execution mode of the present invention.For the those of ordinary skill in affiliated field, on the basis of above-mentioned explanation, can also make other multi-form variation or change.Here need not also can't give exhaustive to all execution modes.And these belong to conspicuous variation or the change that spirit of the present invention extended out and still are among protection scope of the present invention.
Claims (4)
1. the method for direct current shunt release and the tandem working of direct current auxiliary relay is characterized in that comprising:
A, after the push-button switch that is parallel to direct current auxiliary relay (6) (K) is connected; The direct current input total voltage (Ui) of the series circuit that said direct current auxiliary relay and direct current shunt release constitute and the DC input voitage of said direct current shunt release (Ui ') equate, and the hysteresis dummy load control circuit (1) in said direct current shunt release, voltage detecting and pulse shaping circuit (3), shunt opening electromagnet coil (5) provide access voltage; When said DC input voitage (Ui ') greater than the rated voltage Ue of said direct current shunt release 70% the time; Break off the dummy resistance (JFZ1) in the said hysteresis dummy load control circuit (1); Simultaneously said voltage detecting and pulse shaping circuit (3) detect said DC input voitage (Ui ') greater than rated voltage Ue 70% after, produce one continue 50-60ms the single pulse signal; This single pulse signal is after overdrive circuit (4) amplifies, and control shunt opening electromagnet coil (5) must conduct, and the armature work in the then said direct current shunt release (7) realizes the separating brake action;
B, unclamp when said push-button switch (K); Then said DC input voitage (Ui ') less than 50% of said rated voltage Ue; Said hysteresis dummy load control circuit (1) inserts dummy resistance (JFZ1); So that said DC input voitage (Ui ') drop to said direct current input total voltage Ui 10% in, and make said direct current auxiliary relay (6) operate as normal; And said voltage detecting and pulse shaping circuit (3) detect said DC input voitage (Ui ') 10% o'clock less than rated voltage Ue, do not produce said pulse signal, not conducting of then said shunt opening electromagnet coil (5).
2. the method for direct current shunt release according to claim 1 and the tandem working of direct current auxiliary relay; It is characterized in that: said direct current shunt release comprises: first, second contact (1-1,1-2), drive circuit (4), shunt opening electromagnet coil (5), voltage detecting and pulse shaping circuit (3) and hysteresis dummy load control circuit (1);
Said first contact (1-1) links to each other with the current input terminal of said hysteresis dummy load control circuit (1), power circuit (2), voltage detecting and pulse shaping circuit (3) and the current input terminal of shunt opening electromagnet coil (5) respectively;
Said second contact (1-2) links to each other with the earth terminal of said hysteresis dummy load control circuit (1), power circuit (2), voltage detecting and pulse shaping circuit (3), drive circuit (4) respectively.
3. the method for direct current shunt release according to claim 2 and the tandem working of direct current auxiliary relay; It is characterized in that: said hysteresis dummy load control circuit (1) comprising: first contact (1-1); Said first contact (1-1) links to each other with an end of dummy resistance (JFZ1), first resistance (RD1) respectively; And the other end of said dummy resistance (JFZ1) links to each other with the collector electrode of first triode (TD1); The other end of said first resistance (RD1) links to each other with an end of second resistance (RD2), the 3rd resistance (RD3) respectively; The other end of said second resistance (RD2) links to each other with the base stage of said first triode (TD1) and the collector electrode of second triode (TD2) respectively, and each grounded emitter of said first, second triode (TD1, TD2); The negative electrode of another termination first voltage-stabiliser tube (ZD1) of said the 3rd resistance (RD3), the anode of this first voltage-stabiliser tube (ZD1) connects the base stage of said second triode (TD2).
4. the method for direct current shunt release according to claim 3 and the tandem working of direct current auxiliary relay is characterized in that: said voltage detecting and pulse shaping circuit (3) comprising: voltage detecting circuit (3-1), pulse shaping circuit (3-2);
Said voltage detecting circuit (3-1) comprising: said first contact (1-1) links to each other with an end of the 4th resistance (R1); The reference utmost point of the adjustable shunting a reference source of the one or three end (T1) in one end of the other end of said the 4th resistance (R1) and the 5th resistance (R2) and the said pulse shaping circuit (3-2) and an end of first electric capacity (C1) link to each other, and the other end ground connection of said first electric capacity (C1); The other end of said the 5th resistance (R2) links to each other with an end of the 6th resistance (R3) and the drain electrode of FET (T2) respectively; And the other end of said the 6th resistance (R3) links to each other with the source electrode of said FET (T2) and ground connection, and the grid of said FET (T2) links to each other with the negative electrode of the adjustable shunting a reference source of said the one or three end (T1);
Said pulse shaping circuit (3-2) comprising: a termination DC power supply of the 7th resistance (R4), the 8th resistance (R5), the 9th resistance (R6), the tenth resistance (R7); The other end of said the 7th resistance (R4) links to each other with the negative electrode of the adjustable shunting a reference source of said the one or three end (T1) and an end of second electric capacity (C2) respectively, and the adjustable shunting a reference source of said the one or three end (T1) plus earth; The other end of said the 8th resistance (R5) extremely links to each other with the other end of said second electric capacity (C2) and the reference of the adjustable shunting a reference source of the two or three end (T3) respectively; The other end of said the 9th resistance (R6) links to each other with the negative electrode of the adjustable shunting a reference source of said the two or three end (T3) and the base stage of the 3rd triode (T4) respectively, and the plus earth of the adjustable shunting a reference source of said the two or three end (T3); The other end of said the tenth resistance (R7) links to each other with the collector electrode of said the 3rd triode (T4) and as the output of pulse signal; And the emitter of said the 3rd triode (T4) links to each other with the negative electrode of second voltage-stabiliser tube (T5), the plus earth of said second voltage-stabiliser tube (T5).
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| CN201210035337.7A CN102570379B (en) | 2012-02-16 | 2012-02-16 | Method for realizing serial connection work of direct current shunt tripping device and direct current middle relay |
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| CN201210035337.7A CN102570379B (en) | 2012-02-16 | 2012-02-16 | Method for realizing serial connection work of direct current shunt tripping device and direct current middle relay |
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| CN102570379B CN102570379B (en) | 2014-05-28 |
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2012
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000267744A (en) * | 1999-03-18 | 2000-09-29 | Ando Electric Co Ltd | Output stabilizing system for switching power source |
| CN201035128Y (en) * | 2007-04-20 | 2008-03-12 | 欧普特光电科技股份有限公司 | Fictitious load circuit arrangement |
| CN101728125A (en) * | 2009-11-19 | 2010-06-09 | 天津市百利电气有限公司 | Circuit breaker with optional control supply voltage |
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| CN102570379B (en) | 2014-05-28 |
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