CN207426660U - Buckle releaser and breaker - Google Patents
Buckle releaser and breaker Download PDFInfo
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- CN207426660U CN207426660U CN201721587702.XU CN201721587702U CN207426660U CN 207426660 U CN207426660 U CN 207426660U CN 201721587702 U CN201721587702 U CN 201721587702U CN 207426660 U CN207426660 U CN 207426660U
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Abstract
The utility model discloses a kind of buckle releaser, with turn-on current protection and high setting instantaneous short-circuit defencive function.It includes integrating circuit and signal comparator circuit; integrating circuit is used to reduce the sampled signal of bus current; sampled signal after reduction is sent trip signal by signal comparator circuit compared with the rotection thresholds signal that rotection thresholds signal generation module is exported, and according to comparative result to dropout driving circuit；Rotection thresholds signal generation module includes：ON/OFF state detection circuits, MCR/HSISC threshold values switching circuit, retarded closing circuit, MCR/HSISC threshold reference circuits.The invention also discloses a kind of breakers.Participation of this practicality without controller, no matter accessory power supply with the presence or absence of can quickly and accurately perform MCR and/or HSISC protections, meets the self-shield demand of breaker；The effective time of MCR protections can be simply adjusted by retarded closing circuit, and successfully realizes that MCR is connected with the accurate of HSISC defencive functions by MCR/HSISC threshold values switching circuit.
Description
Technical field
The utility model is related to a kind of buckle releasers more particularly to a kind of turn-on current that carries to protect MCR and high setting instantaneously
The buckle releaser of short-circuit protection HSISC functions.
Background technology
Low-voltage circuit breaker mainly realizes the functions such as control, protection, measurement in a power distribution system, for the purpose of safety, when
When fault current super large reaches the limit of the limit or breaker of prospective short circuit current in itself, some low-voltage circuit breakers pass through connection
Current protection（Making Current Release, abbreviation MCR）With high setting value instantaneous short-circuit（High Set
Instantaneous Short Current, abbreviation HSISC）Protection carries out rapidly short circuit breaking.
Breaker connects closure under short circuit fault condition can generate very big short circuit current flow, and MCR is protected to breaker
This making capacity is protected, and it is more than to connect the electric current of limit capacity and cause switching damage to prevent closing of power circuit breaker, simultaneously
Equipment is avoided to be subject to excessive impact, while standard GB14048.2-2008 provides the MCR when breaker is in the close position again
Protection should not act.General producer defines MCR protections and works in breaker closing 100ms, when breaker is in moment of closing a floodgate
Detect that peak point current is more than predetermined value by instantaneous tripping.High setting value instantaneous short-circuit protection is the limit of the HSISC to breaker
Bearing capacity carries out high speed instantaneous protection.If the specified KA Rms Icw of breaker is less than rating plate in actual motion
When limiting breaking capacity Icu, if closing short-circuit instantaneous protection, breaker may bear to be more than Icw in short delay short-circuit protection
Current value, for the requirement of breaker self-shield, when the peak point current of short circuit current flow is more than HSISC setting values, breaker
Trip unit sends instantaneous separating brake order, prevent breaker it is short prolong protection in bear more than Icw current value and damage.Generally
Producer defines HSISC protections and works always after combined floodgate 100ms, i.e., just switchs to HSISC when failing the MCR protective effect times
Protection, and work always after MCR shielding failures.
According to above-mentioned technical background, MCR and HSISC is protected to be mutually linked from the point of view of the tandem that function is realized,
Therefore existing patent CN200520123060.9 " breaker for carrying MCR and HSISC function realizing circuits " passes through microcontroller control
The conducting of triode processed and cut-off realize that MCR and HSISC protected is mutually linked, i.e. MCR is protected in breaker closing 100ms
Effectively, HSISC is effective after 100ms.Although this method accurately controls MCR and HSISC protections mutually switching by microcontroller,
The shortcomings that apparent there are one but, exactly when breaker does not connect accessory power supply only by energy mutual inductor（I.e. fast saturable inductor）For
When electric, the microcontroller in electronic trip unit needs the regular hour that can just detect the on/off switch state of breaker after starting
（MCR protects the on/off switch state with breaker to be closely related, and MCR is protected and should do not worked when in the close position）, therefore MCR
It is just slow with HSISC protection responses, it is clear that the quick self-shield demand of breaker cannot be met.Existing patent
CN201310428241.1 " the quick MCR intelligent controllers of a kind of detection containing energy storage and arbitration functions ", although it is contemplated that fast full
The quick startup protected with MCR during coil power supply, but protected without HSISC.
Utility model content
The technical problem to be solved by the utility model is to overcome the shortage of prior art, a kind of buckle releaser is provided, can be led to
It crosses hardware mode and smoothly realizes that the mutual of MCR and HSISC defencive functions accurate is connected.
The utility model specifically solves above-mentioned technical problem using following technical scheme：
A kind of buckle releaser, with turn-on current protection MCR and high setting instantaneous short-circuit protection HSISC functions, the buckle releaser
Including integrating circuit and signal comparator circuit, the integrating circuit is for the sampled signal of bus current to be reduced, signal
Comparison circuit by the sampled signal after reduction compared with the rotection thresholds signal that rotection thresholds signal generation module is exported,
And trip signal is sent to dropout driving circuit according to comparative result；The rotection thresholds signal generation module includes following hardware
Circuit：
ON/OFF state detection circuits, for responding the splitting or integrating lock state of buckle releaser place breaker and exporting corresponding
Splitting or integrating lock detects signal；
Retarded closing circuit, the splitting or integrating lock for ON/OFF state detection circuits to be exported detect signal transmission to MCR/
HSISC threshold value switching circuits, and signal is detected into line delay to closing a floodgate in transmission；
MCR/HSISC threshold value switching circuits, for responding the switching on and off detection signal for receiving retarded closing circuit, point
First, second threshold signal is not exported；
MCR/HSISC threshold reference circuits, for respond that MCR/HSISC threshold value switching circuits are exported first, second
Threshold signal exports MCR rotection thresholds signal, HSISC rotection thresholds signals to signal comparator circuit respectively.
Preferably, the ON/OFF state detection circuits include：Resistance R2~R4, diode D1, triode V1, capacitance
The microswitch S1 of the splitting or integrating lock state of C2 and response buckle releaser place breaker；After microswitch S1 connects with resistance R2
It is connected with the base stage of capacitance C2 one end, resistance R3 one end, triode V1, emitter, the capacitance C2 other ends, the resistance of triode V1
The R3 other ends are grounded, and the cathode of the collector connection diode D1 of triode V1, the anode of diode D1 is via resistance R4 and electricity
Source connects, and splitting or integrating lock detection signal output part is drawn between the anode of diode D1 and resistance R4.
Further, the microswitch and an inertia idler wheel coordinate so where microswitch delay response buckle releaser
The "on" position of breaker.
Preferably, the retarded closing circuit includes：Resistance R5~R15, comparator N3A, comparator N3B, capacitance C3, three
Pole pipe V2 and diode D2；Resistance R5=R6, R11=R12；Resistance R5 one end, the power positive end of comparator N3A, resistance R7 one end,
One end common-battery source of the emitter of triode V2, resistance R11 one end and resistance R14, the other end of resistance R5, resistance R6 one end and
The positive input terminal of comparator N3A is connected, and the other end of resistance R7, one end of resistance R8 are connected with the output terminal of comparator N3A, electricity
The other end of resistance R8 is connected with the base stage of triode V2, and the collector of triode V2 is connected with one end of resistance R9, resistance R9's
The other end, the anode of capacitance C3, one end of resistance R10 are connected with one end of resistance R13, and cathode, the resistance R10 of capacitance C3 is another
End, the power supply negative terminal of the resistance R6 other ends, comparator N3A are connected commonly with one end of resistance R12, the other end, the electricity of resistance R12
The other end of resistance R11 is connected with the negative input end of comparator N3B, the positive input terminal of comparator N3B and the other end phase of resistance R13
Even, the output terminal of comparator N3B, the other end of resistance R14, one end of resistance R15 are connected with the anode of diode D2, resistance
The another of R15 is connected to MCR/HSISC threshold value switching circuits.
Preferably, the MCR/HSISC threshold values switching circuit includes：Resistance R16~R19, metal-oxide-semiconductor V3；Power positive end, electricity
It is grounded after resistance R16, R17, R18 sequential series, between drain electrode access resistance R17, R18 of metal-oxide-semiconductor V3, resistance R19 is connected on MOS
Between the grid and source electrode of pipe V3, the source electrode of metal-oxide-semiconductor V3 is grounded, the grid of metal-oxide-semiconductor V3 and the output terminal phase of retarded closing circuit
Even, the signal output part being connected with MCR/HSISC threshold reference circuits is drawn between resistance R16 and R17.
Preferably, the MCR/HSISC threshold references circuit is put including resistance R20~R22, operational amplifier N4A, computing
Big device N4B；Output terminal, the negative input end of operational amplifier N4A is connected with one end of resistance R20 and draws positive rotection thresholds signal
Output terminal, the positive input terminal of operational amplifier N4A are connected with the output terminal of MCR/HSISC threshold value switching circuits, operational amplifier
The negative input end of N4B, the other end of resistance R20 are connected with one end of resistance R21, the other end and operational amplifier of resistance R21
The output terminal of N4B is connected and draws negative rotection thresholds signal output part, the positive input terminal series resistance R22 of operational amplifier N4B
It is connected afterwards with power supply.
Preferably, the signal comparator circuit is by each phase sampled signal after reduction and rotection thresholds signal generation module institute
After the rotection thresholds signal of output is compared respectively, by comparative result Parallel opertation.
Further, which further includes control unit and a logical "or" circuit, and control unit is sent de-
It is defeated after the logical "or" circuit carries out logical "or" computing with the trip signal that signal comparator circuit is sent to detain signal
Enter driving circuit of threading off.
Following technical scheme can also be obtained according to identical invention thinking：
A kind of breaker, including as above buckle releaser described in any technical solution.
Preferably, which uses energy transformer for supplying power.
Compared with prior art, technical solutions of the utility model have the advantages that：
1st, participation of the utility model buckle releaser without controller, no matter accessory power supply with the presence or absence of can according to hardware electricity
The breaker on/off switch state of road detection is protected quickly and accurately to perform MCR and/or HSISC, meets the self-insurance of breaker
Shield demand；
2nd, participation of the utility model buckle releaser without controller only can be adjusted simply by retarded closing circuit
The effective time of MCR protections, and MCR and HSISC defencive functions are successfully realized by MCR/HSISC threshold values switching circuit
Accurate linking.
Description of the drawings
Fig. 1 is the functional block diagram of the utility model buckle releaser.
Fig. 2 is the signal comparator circuit of specific embodiment.
Fig. 3 is the ON/OFF state detection circuits of specific embodiment.
Fig. 4 is the retarded closing circuit of specific embodiment.
Fig. 5 is the MCR/HSISC threshold value switching circuits of specific embodiment.
Fig. 6 is the MCR/HSISC threshold reference circuits of specific embodiment.
Fig. 7 is the logical "or" circuit of specific embodiment.
Fig. 8 is another MCR/HSISC threshold values switching circuit.
Specific embodiment
The technical solution of the utility model is described in detail below in conjunction with the accompanying drawings：
Fig. 1 shows the basic principle of the utility model buckle releaser, as shown in Figure 1, by eat can Paderewski coil measure
Each phase current signal of A, B, C, N on busbar is sent into signal comparator circuit, in signal comparator circuit after integrated circuit signal reduction
In respectively compared with coming from the rotection thresholds signal of MCR/HSISC threshold reference circuits, the ratio of each phase signals of A, B, C, N
Compared with output-parallel together, when short circuit occurs for any phase during A, B, C, N are each or a several phases, then the signal value of corresponding phase is more than
MCR or HSISC rotection thresholds signals, then signal comparator circuit send trip signal give dropout driving circuit.
The ON/OFF state detection circuits are used for the splitting or integrating lock state of breaker where responding buckle releaser and the output phase should
Splitting or integrating lock detection signal, and will detection signal be sent into be closed delay circuit；
The retarded closing circuit is used for the splitting or integrating lock for exporting ON/OFF state detection circuits detection signal transmission extremely
MCR/HSISC threshold value switching circuits, and signal is detected into line delay to closing a floodgate in transmission；Receiving the detection signal that closes a floodgate
Afterwards, first delay for a period of time, then will close a floodgate and detect signal transmission to MCR/HSISC threshold value switching circuits again；
The MCR/HSISC threshold values switching circuit exports for responding received switching on and off detection signal respectively
First, second threshold signal；MCR/HSISC threshold values switching circuit is MCR threshold values there are two output valve, the first output valve, and second is defeated
Go out value for HSISC threshold values, when the separating brake for receiving retarded closing circuit detects signal, MCR/HSISC threshold value switching circuits
Output valve is the first output valve, and MCR functions work, after the combined floodgate for receiving retarded closing circuit detects signal, MCR/
HSISC threshold value switching circuits output valve is the second output valve, and HSISC functions work；
The MCR/HSISC threshold references circuit, for respond that MCR/HSISC threshold value switching circuits are exported first,
Second threshold signal exports MCR rotection thresholds signal, HSISC rotection thresholds signals to signal comparator circuit respectively；Such as Fig. 1 institutes
Show, the output of energy mutual inductor generates VDCC circuits through fast saturated circuit and DC/DC, generates corresponding MCR rotection thresholds signal
With HSISC rotection thresholds signals, because current signal is the signal of exchange, the positive rotection thresholds signals of MCR/HSISC are set
With negative rotection thresholds signal, the two absolute value is equal.
Logical "or" circuit, for the dropout command signal for trip signal and the MCU output for exporting signal comparator circuit
Dropout driving circuit, triggering magnetic flow convertor action, so that breaker disconnects are inputted after carrying out logical "or" computing.
Fig. 2 shows a kind of specific implementation circuit of signal comparator circuit.It as shown in Fig. 2, can the survey of Paderewski coil by eating
Each phase current signal of A, B, C, N on the busbar obtained, integrated circuit signal is reduced to IA, IB, IC, IN, due to IA, IB, IC, IN
For sinusoidal signal, the positive half cycle signal of IA, IB, IC, IN are respectively in comparator N2A, N2C, N1A and N1C of signal comparator circuit
In compared with the positive rotection thresholds signal MCR/HSISC_Vref+ of MCR/HSISC；The negative half-cycle signal of IA, IB, IC, IN point
Do not bear rotection thresholds signal MCR/HSISC_ with MCR/HSISC in comparator N2B, N2D, N1B and N1D of signal comparator circuit
Vref- is compared, and the output terminal of comparator N2A, N2C, N1A, N1C, N2B, N2D, N1B and N1D are connected in parallel.Work as open circuit
Short trouble occurs for device side, and the signal detected is more than MCR/HSISC threshold values, then signal comparator circuit sends a signal to dropout and drives
Dynamic circuit, disconnects breaker.
Fig. 3 shows a kind of specific implementation circuit of ON/OFF state detection circuits.As shown in figure 3, it includes resistance R2
~R4, diode D1, triode V1, capacitance C2 and response buckle releaser where breaker splitting or integrating lock state microswitch
S1；Microswitch S1 is connected after connecting with resistance R2 with the base stage of capacitance C2 one end, resistance R3 one end, triode V1, triode
The emitter of V1, the capacitance C2 other ends, resistance R3 other ends ground connection, the cathode of the collector connection diode D1 of triode V1,
The anode of diode D1 is connected via resistance R4 with power supply, and the inspection of splitting or integrating lock is drawn between the anode of diode D1 and resistance R4
Survey signal output part.When microswitch S1 is disconnected, triode V1 cut-offs, the ON/ of corresponding characterization breaker on/off switch state
OFF signal is high level；When microswitch S1 is closed, power supply VS powers to the base stage of triode V1, and triode V1 conductings are right
The ON/OFF signals for the characterization breaker on/off switch state answered are low level.In this example, microswitch S1 and an inertia idler wheel
Cooperation so that the "on" position of breaker, i.e. microswitch are closed compared with breaker where microswitch S1 delay response buckle releasers
Main contact is closed delay regular hour t1, and the time delay, t1 was generally shorter（Such as more than ten ms）.
Fig. 4 shows a kind of specific implementation circuit of retarded closing circuit.As shown in figure 4, the retarded closing circuit includes：
Resistance R5~R15, comparator N3A, comparator N3B, capacitance C3, triode V2 and diode D2；Resistance R5=R6, R11=R12；
Resistance R5 one end, the power positive end of comparator N3A, resistance R7 one end, the emitter of triode V2, resistance R11 one end and resistance
One end common-battery source of R14, the other end of resistance R5, resistance R6 one end are connected with the positive input terminal of comparator N3A, and resistance R7's is another
One end, one end of resistance R8 are connected with the output terminal of comparator N3A, and the other end of resistance R8 is connected with the base stage of triode V2,
The collector of triode V2 is connected with one end of resistance R9, the other end of resistance R9, the anode of capacitance C3, one end of resistance R10
It is connected with one end of resistance R13, cathode, the resistance R10 other ends, the resistance R6 other ends, the power supply of comparator N3A of capacitance C3 are born
End is connected commonly with one end of resistance R12, the negative input of the other end of resistance R12, the other end of resistance R11 and comparator N3B
End is connected, and the positive input terminal of comparator N3B is connected with the other end of resistance R13, the output terminal of comparator N3B, resistance R14 it is another
One end, one end of resistance R15 are connected with the anode of diode D2, and the another of resistance R15 is connected to MCR/HSISC threshold values switching electricity
Road.In the circuit, when ON/OFF signals are high level（Breaker open operation）, comparator N3A output low levels, triode V2
Conducting, since resistance R9 resistance values are smaller, capacitance C3 both ends level is at once close to DVCC, comparator N3B output high level.Conversely,
When ON/OFF signals are low level（Breaker closing）, comparator N3A output high level, triode V2 cut-offs, due to resistance
R10 resistance values are larger, and capacitance C3 is slowly discharged by resistance R10（Delay）, until capacitance C3 both ends level is less than comparator N3B's
6 foot reference voltages, comparator N3B output low levels.The output level of comparator N3B is inputted through diode D2 to the I/O of MCU
Mouthful, for detections of the MCU to breaker on/off switch state.
Fig. 5 shows a kind of specific implementation circuit of MCR/HSISC threshold value switching circuits.As shown in figure 5, the MCR/
HSISC threshold value switching circuits include：Resistance R16~R19, metal-oxide-semiconductor V3；After power positive end, resistance R16, R17, R18 sequential series
Ground connection, between drain electrode access resistance R17, R18 of metal-oxide-semiconductor V3, resistance R19 is connected between the grid and source electrode of metal-oxide-semiconductor V3, MOS
The source electrode ground connection of pipe V3, the grid of metal-oxide-semiconductor V3 is connected with the output terminal of retarded closing circuit, drawn between resistance R16 and R17 and
The signal output part that MCR/HSISC threshold reference circuits are connected.In the circuit, when the comparator N3B of retarded closing circuit is defeated
When going out high level, metal-oxide-semiconductor V3 conductings, resistance R18 is short-circuited, and MCR/HSISC threshold value switching circuits output valve is the first output valve,
MCR functions work, Vref=R17/（R16+R17）；Conversely, metal-oxide-semiconductor V3 ends, MCR/HSISC threshold value switching circuit output valves
For the second output valve, HSISC functions work, and Vref=（R17+R18）/（R16+R17+R18）.
Fig. 6 shows a kind of specific implementation circuit of MCR/HSISC threshold reference circuits.As shown in fig. 6, the MCR/
HSISC threshold references circuit includes resistance R20~R22, operational amplifier N4A, operational amplifier N4B；Operational amplifier N4A's
Output terminal, negative input end are connected with one end of resistance R20 and draw positive rotection thresholds signal output part, operational amplifier N4A's
Positive input terminal is connected with the output terminal of MCR/HSISC threshold value switching circuits, the negative input end of operational amplifier N4B, resistance R20
The other end is connected with one end of resistance R21, and the other end of resistance R21 is connected with the output terminal of operational amplifier N4B and draws negative
Rotection thresholds signal output part is connected with power supply after the positive input terminal series resistance R22 of operational amplifier N4B.Reference voltage
Vref generates the positive rotection thresholds signal MCR/HSISC_Vref+ of MCR/HSISC, negative protection threshold by operational amplifier N4A, N4B
Value signal MCR/HSISC_Vref-.
Fig. 7 shows a kind of specific implementation circuit of logical "or" circuit.As shown in fig. 7, signal comparator circuit output
The dropout command signal MCU_Trip of trip signal MCR/HSISC_Trip and MCU output respectively by diode D3 in parallel,
D4 inputs dropout driving circuit after carrying out logical "or" computing.
Fig. 8 shows another specific implementation circuit of MCR/HSISC threshold value switching circuits, unlike Fig. 5 circuits
Metal-oxide-semiconductor V3 is substituted by triode.
The overall workflow of the buckle releaser is：Breaker carries out closing operation, when microswitch passes through time delay t1
After closure, which is detected differentiation by ON/OFF state detection circuits, and output breaker closing detects signal, into
Enter to be closed delay circuit；In delay circuit is closed, capacitance C3 charge, then discharge again, make the breaker closing signal into
One-step delay, if the time delay be t2, therefore final delay closed circuit output characterization breaker closing status signal when
Between compared with breaker main contact be closed time to postpone t1+t2, t1+t2 is approximately equal to 100ms in the present embodiment, in this period
Interior, MCR/HSISC threshold value switching circuits output valve is the first output valve, and MCR functions work, the guarantor in signal comparator circuit
Shield threshold signal is MCR threshold values, in signal comparator circuit, breaker detect each phase signals of major loop and MCR threshold values into
Row compares, and when short trouble occurs for breaker side, the signal detected is more than MCR threshold values, then signal comparator circuit sends signal
Dropout driving circuit is given, disconnects breaker.Breaker closing status signal after being closed the delay of delay circuit, is sent
To MCR/HSISC threshold value switching circuits, turn on metal-oxide-semiconductor therein, MCR/HSISC threshold value switching circuits output valve is defeated for second
Go out value, HSISC functions work, at this point, the threshold value in signal comparator circuit is HSISC threshold values, in signal comparator circuit, break
Road device detects each phase signals of major loop compared with HSISC threshold values, when breaker side generation short trouble, detects
Signal is more than HSISC threshold values, then signal comparator circuit sends a signal to dropout driving circuit, disconnects breaker.Meanwhile open circuit
Device detects that each phase signals of major loop input MCU by signal conditioning circuit, when long delay failure occurs for major loop or short prolongs
When failure or transient fault when act threshold value be less than MCR/HSISC failure when, MCU send dropout instruction to logical "or" electricity
Road, then to dropout driving circuit, disconnect breaker.The speed saturated circuit, DC/DC generate DVCC circuits, driving electricity of threading off
Road etc. is existing public technology, and for the sake of saving space, details are not described herein again.Buckle releaser in the present embodiment is only by energy
During transformer for supplying power, due to eliminating the startup time of microcontroller, MCR and HSISC protection responses are very fast, meet breaker
Self-shield demand, and participated in without MCU, successfully realize that MCR and HSISC are protected by MCR/HSISC threshold values switching circuit
Protective function is mutually linked and switches.
Claims (10)
1. a kind of buckle releaser, with turn-on current protection MCR and high setting instantaneous short-circuit protection HSISC functions, the buckle releaser bag
Integrating circuit and signal comparator circuit are included, the integrating circuit is for the sampled signal of bus current to be reduced, signal ratio
Compared with circuit by the sampled signal after reduction compared with the rotection thresholds signal that rotection thresholds signal generation module is exported, and
Trip signal is sent to dropout driving circuit according to comparative result；It is characterized in that, the rotection thresholds signal generation module bag
Include following hardware circuit：
ON/OFF state detection circuits, for responding the splitting or integrating lock state of buckle releaser place breaker and exporting corresponding splitting or integrating
Lock detects signal；
Retarded closing circuit, the splitting or integrating lock for ON/OFF state detection circuits to be exported detect signal transmission to MCR/HSISC
Threshold value switching circuit, and signal is detected into line delay to closing a floodgate in transmission；
MCR/HSISC threshold value switching circuits, it is defeated respectively for responding the switching on and off detection signal for receiving retarded closing circuit
Go out first, second threshold signal；
MCR/HSISC threshold reference circuits, for responding first, second threshold value that MCR/HSISC threshold value switching circuits are exported
Signal exports MCR rotection thresholds signal, HSISC rotection thresholds signals to signal comparator circuit respectively.
2. buckle releaser as described in claim 1, which is characterized in that the ON/OFF state detection circuits include：Resistance R2~R4,
Diode D1, triode V1, capacitance C2 and response buckle releaser where breaker splitting or integrating lock state microswitch S1；It is micro-
Dynamic switch S1 is connected after connecting with resistance R2 with the base stage of capacitance C2 one end, resistance R3 one end, triode V1, the hair of triode V1
Emitter-base bandgap grading, the capacitance C2 other ends, resistance R3 other ends ground connection, the cathode of the collector connection diode D1 of triode V1, diode
The anode of D1 is connected via resistance R4 with power supply, and splitting or integrating lock detection signal is drawn between the anode of diode D1 and resistance R4
Output terminal.
3. buckle releaser as claimed in claim 2, which is characterized in that the microswitch and an inertia idler wheel coordinate so that fine motion
The "on" position of breaker where switch time delay response buckle releaser.
4. buckle releaser as described in claim 1, which is characterized in that the retarded closing circuit includes：Resistance R5~R15, compare
Device N3A, comparator N3B, capacitance C3, triode V2 and diode D2；Resistance R5=R6, R11=R12；Resistance R5 one end, comparator
The power positive end of N3A, resistance R7 one end, the emitter of triode V2, one end common-battery source of resistance R11 one end and resistance R14, electricity
Hinder the other end of R5, resistance R6 one end is connected with the positive input terminal of comparator N3A, the other end of resistance R7, one end of resistance R8
Be connected with the output terminal of comparator N3A, the other end of resistance R8 is connected with the base stage of triode V2, the collector of triode V2 with
One end of resistance R9 is connected, the other end of resistance R9, the anode of capacitance C3, one end phase of one end of resistance R10 and resistance R13
Even, one end of the cathode of capacitance C3, the resistance R10 other ends, the resistance R6 other ends, the power supply negative terminal of comparator N3A and resistance R12
It is connected altogether, the other end of resistance R12, the other end of resistance R11 are connected with the negative input end of comparator N3B, comparator N3B's
Positive input terminal is connected with the other end of resistance R13, the output terminal of comparator N3B, the other end of resistance R14, one end of resistance R15
It is connected with the anode of diode D2, the another of resistance R15 is connected to MCR/HSISC threshold value switching circuits.
5. buckle releaser as described in claim 1, which is characterized in that the MCR/HSISC threshold values switching circuit includes：Resistance R16
~R19, metal-oxide-semiconductor V3；It is grounded after power positive end, resistance R16, R17, R18 sequential series, the drain electrode access resistance of metal-oxide-semiconductor V3
Between R17, R18, resistance R19 is connected between the grid and source electrode of metal-oxide-semiconductor V3, the source electrode ground connection of metal-oxide-semiconductor V3, the grid of metal-oxide-semiconductor V3
Pole is connected with the output terminal of retarded closing circuit, draws between resistance R16 and R17 and is connected with MCR/HSISC threshold reference circuits
Signal output part.
6. buckle releaser as described in claim 1, which is characterized in that the MCR/HSISC threshold references circuit include resistance R20~
R22, operational amplifier N4A, operational amplifier N4B；One end of the output terminal of operational amplifier N4A, negative input end and resistance R20
It is connected and draws positive rotection thresholds signal output part, positive input terminal and the MCR/HSISC threshold value switching circuits of operational amplifier N4A
Output terminal be connected, the negative input end of operational amplifier N4B, the other end of resistance R20 are connected with one end of resistance R21, resistance
The other end of R21 is connected with the output terminal of operational amplifier N4B and draws negative rotection thresholds signal output part, operational amplifier
It is connected after the positive input terminal series resistance R22 of N4B with power supply.
7. buckle releaser as described in claim 1, which is characterized in that the signal comparator circuit is by each phase sampled signal after reduction
With rotection thresholds signal that rotection thresholds signal generation module is exported respectively compared with after, by comparative result Parallel opertation.
8. the buckle releaser as described in any one of claim 1~7, which is characterized in that the buckle releaser further includes control unit and one
Logical "or" circuit, the trip signal that the trip signal that control unit is sent and signal comparator circuit are sent pass through described in patrol
It collects after OR circuit carries out logical "or" computing and inputs dropout driving circuit.
9. a kind of breaker, including the buckle releaser as described in any one of claim 1~8.
10. breaker as claimed in claim 9, which is characterized in that the breaker uses energy transformer for supplying power.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721587702.XU CN207426660U (en) | 2017-11-24 | 2017-11-24 | Buckle releaser and breaker |
Applications Claiming Priority (1)
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108988290A (en) * | 2018-09-28 | 2018-12-11 | 天津众智创新科技有限公司 | Intelligent breaker control circuit with tripping threshold value regulatory function |
| CN113721091A (en) * | 2021-08-16 | 2021-11-30 | 北京京东乾石科技有限公司 | Access control module testing device and testing method thereof |
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2017
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108988290A (en) * | 2018-09-28 | 2018-12-11 | 天津众智创新科技有限公司 | Intelligent breaker control circuit with tripping threshold value regulatory function |
| CN113721091A (en) * | 2021-08-16 | 2021-11-30 | 北京京东乾石科技有限公司 | Access control module testing device and testing method thereof |
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