CN201717601U - Power supply failure shunt trip and overvoltage, under-voltage protection miniature circuit breaker - Google Patents
Power supply failure shunt trip and overvoltage, under-voltage protection miniature circuit breaker Download PDFInfo
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- CN201717601U CN201717601U CN2010202760482U CN201020276048U CN201717601U CN 201717601 U CN201717601 U CN 201717601U CN 2010202760482 U CN2010202760482 U CN 2010202760482U CN 201020276048 U CN201020276048 U CN 201020276048U CN 201717601 U CN201717601 U CN 201717601U
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Abstract
The utility model relates to a power supply failure shunt trip and overvoltage, under-voltage protection miniature circuit breaker. An input end of a sampling circuit is connected with a signal sampling end of a main circuit breaker, and an output end of the sampling circuit is connected with a signal input end of a logic identification circuit; an output end of a reference circuit is connected with a reference signal input end of the logic identification circuit; an output end of the logical identification circuit is connected with an input end of a delay circuit, and an output end of the delay circuit is connected with an input end of a switch control circuit, and an output end of the switch control circuit is connected with a control signal input end of the main circuit breaker; and a rectifying filter circuit supplying power to the switch control circuit is a full-wave rectifying power supply. The miniature circuit breaker is out of influence by circuit load loop current and circuit load loop voltage, high in sensitivity and reliability, low in cost, small in size, and capable of cutting off the main circuit breaker after the power supply is disconnected, and can be matched with circuit breakers of different products as an accessory.
Description
Technical field
The utility model relates to electric control appliance, is power supply power failure shunted exciter tripping, overvoltage under voltage protection miniature circuit breaker specifically.
Background technology
Existing power consumption equipment through regular meeting because electrical network or circuit question and under voltage or overvoltage operation finally cause power consumption equipment to damage.Directly reignition after some industrial equipment does not allow to have a power failure.Under-voltage overvoltage protection product on the market adopts current sampling, the cost height, and volume is big, influenced by the load circuit current/voltage, and protective value is poor, and does not have the power-failure protecting function.
The utility model content
At the defective that exists in the prior art; the purpose of this utility model is to provide power supply power failure shunted exciter tripping, overvoltage under voltage protection miniature circuit breaker; not influenced by the circuit load loop current not influenced by the circuit load loop voltage; highly sensitive; the reliability height, cost is low, and volume is little; and can behind power cut-off, cut off main circuit breaker, also can be used as the circuit breaker that annex is coupled to different product.
For reaching above purpose, the technical scheme that the utility model is taked is:
Power supply power failure shunted exciter tripping, overvoltage under voltage protection miniature circuit breaker, it is characterized in that: the sample of signal end of the input of sample circuit and main circuit breaker is connected, the output of sample circuit is connected with the signal input part of logic identification circuit, the reference signal input of the output of reference circuit and logic identification circuit is connected, the output of logic identification circuit is connected with the input of delay circuit, the output of delay circuit is connected with the input of ON-OFF control circuit, and the output of ON-OFF control circuit is connected with the signal input end of main circuit breaker; For ON-OFF control circuit provides the current rectifying and wave filtering circuit of power supply is full-wave rectifier power supply.
On the basis of technique scheme, the output signal of main circuit breaker is by the normally open contact output of miniature relay, and described normally open contact is connected with the actuating coil of the relay of ON-OFF control circuit and is parallel to both ends of power then.
On the basis of technique scheme, be provided with magnetictrip and the energy storage capacitor that is connected with the control coil L of magnetictrip in the ON-OFF control circuit, described energy storage capacitor is high-pressure electrolysis electric capacity or polarity free capacitor.
On the basis of technique scheme, energy storage capacitor is parallel to the common port of the relay contact in the ON-OFF control circuit, the polarity of energy storage capacitor is consistent with the polarity of the full-bridge rectification output of relay normally open contact termination, the input termination main power source of full-bridge rectification, the normally-closed contact end of relay also meets the control coil L of magnetictrip.
On the basis of technique scheme, said logic identification circuit comprises at least one positive-negative-positive triode, the emitter of the positive-negative-positive triode in the output of reference circuit and the logic identification circuit is connected, the base stage of the positive-negative-positive triode in the output of sample circuit and the logic identification circuit is connected, and the collector electrode of the positive-negative-positive triode in the logic identification circuit and the input of delay circuit are connected.
On the basis of technique scheme, the model of described main circuit breaker is DZ47.
On the basis of technique scheme, described sample circuit comprises: resistance R 2, diode D5, resistance R 3, resistance R 5, capacitor C 2, capacitor C 4;
One end of resistance R 2 and the phase line of main circuit breaker are connected, and the other end of resistance R 2 is connected with the positive pole of diode D5,
The negative pole of diode D5 is connected with an end of resistance R 3, an end of resistance R 5, the positive pole of capacitor C 4, the positive pole of capacitor C 2 respectively,
The equal ground connection of the negative pole of the other end of resistance R 3 and capacitor C 4;
Described logic identification circuit comprises: triode Q1, capacitor C 3, diode D9, resistance R 6, diode D12;
The base stage B of triode Q1 is connected with the other end of resistance R 5,
The negative pole of capacitor C 2 is connected with the emitter E of triode Q1,
One end of the collector electrode of triode Q1 and resistance R 6 is connected,
The other end of resistance R 6 is connected with the positive pole of diode D9, the positive pole of diode D12, the positive pole of capacitor C 3 respectively,
The negative pole of diode D12 is connected with the positive pole of capacitor C 2,
The minus earth of capacitor C 3;
Described delay circuit comprises: capacitor C 6;
Capacitor C 6 is in parallel with diode D13;
Described reference circuit comprises: resistance R 4, diode D6, diode D13;
The anodal of one end of resistance R 4, diode D6 all is connected with the emitter E of triode Q1,
The negative pole of the negative pole of diode D6, diode D13 all is connected with the negative pole of diode D9,
The plus earth of diode D13;
Described current rectifying and wave filtering circuit comprises: diode D1, D2, D3, D4, capacitor C 0, resistance R 1, capacitor C 5;
The negative pole of the negative pole of diode D2, diode D4 all is connected with the other end of resistance R 4,
The negative pole of the negative pole of diode D2, diode D4 also is connected with the positive pole of capacitor C 0, the minus earth of capacitor C 0,
The negative pole of diode D1 is connected with the positive pole of diode D2,
The negative pole of diode D3 is connected with the positive pole of diode D4,
The plus earth of the positive pole of diode D1, diode D3,
The negative pole of diode D3 is also connected to the zero line of AC power,
The negative pole of diode D1 is connected with an end of resistance R 1, an end of capacitor C 5 respectively,
The other end of the other end of resistance R 1, capacitor C 5 all links to each other with the end that resistance R 2 is connected with the phase line of main circuit breaker;
Described ON-OFF control circuit comprises: the control coil L of the triode Q2 of NPN shape, miniature relay J1, J2, magnetictrip, energy storage capacitor C1;
The negative pole of diode D9 is connected with the base stage of triode Q2,
Miniature relay J1 is the 12V miniature relay, the negative pole of its relay coil one terminating diode D2, and the relay coil other end connects the collector electrode of triode Q2,
The grounded emitter of triode Q2,
One end of common port connection small relay J 2 coils of miniature relay J1 contact,
The other end of miniature relay J2 coil links to each other with the end that resistance R 2 is connected with the phase line of main circuit breaker,
Miniature relay J1 normally-closed contact connects the zero line of AC power,
Energy storage capacitor C1 is the above high-voltage capacitance of withstand voltage 450VC, and energy storage capacitor C1 is parallel to the common port of miniature relay J2 contact,
Two normally-closed contacts of miniature relay J2 are in parallel with the control coil L of magnetictrip,
Two normally opened contacts of miniature relay J2 are connected with the negative pole of diode D7, the positive pole of diode D10 respectively,
Diode D7, D8, D10, D11 form full-bridge rectification, and the polarity of energy storage capacitor C1 is consistent with the polarity of full-bridge rectification output,
The positive pole of diode D7 links to each other with the end that resistance R 2 is connected with the phase line of main circuit breaker,
The positive pole of diode D8 connects the zero line of AC power.
Power supply power failure shunted exciter tripping described in the utility model, overvoltage under voltage protection miniature circuit breaker; not influenced by the circuit load loop current not influenced by the circuit load loop voltage; highly sensitive; the reliability height; cost is low; volume is little, and can cut off main circuit breaker behind power cut-off, also can be used as the circuit breaker that annex is coupled to different product.
Description of drawings
The utility model has following accompanying drawing:
Fig. 1 theory diagram of the present utility model,
The circuit diagram of Fig. 2 embodiment 1 of the present utility model.
Embodiment
Below in conjunction with accompanying drawing the utility model is described in further detail.
Fig. 1 is the theory diagram of power supply power failure shunted exciter tripping described in the utility model, overvoltage under voltage protection miniature circuit breaker, and as shown in Figure 1, the technical scheme that the utility model is taked is:
The sample of signal end of the input of sample circuit and main circuit breaker is connected,
The output of sample circuit is connected with the signal input part of logic identification circuit,
The reference signal input of the output of reference circuit and logic identification circuit is connected,
The output of logic identification circuit is connected with the input of delay circuit,
The output of delay circuit is connected with the input of ON-OFF control circuit,
The output of ON-OFF control circuit is connected with the signal input end of main circuit breaker;
For ON-OFF control circuit provides the current rectifying and wave filtering circuit of power supply is full-wave rectifier power supply.
On the basis of technique scheme, the output signal of main circuit breaker is by the normally open contact output of miniature relay, and described normally open contact is connected with the actuating coil of the relay of ON-OFF control circuit and is parallel to both ends of power then.
On the basis of technique scheme, be provided with magnetictrip and the energy storage capacitor that is connected with the control coil L of magnetictrip in the ON-OFF control circuit, described energy storage capacitor is high-pressure electrolysis electric capacity or polarity free capacitor.Power-failure protecting utilizes high-pressure electrolysis electric capacity or polarity free capacitor energy storage exactly, after power failure as the work capacity of tripping coil.
On the basis of technique scheme, energy storage capacitor is parallel to the common port of the relay contact in the ON-OFF control circuit, the polarity of energy storage capacitor is consistent with the polarity of the full-bridge rectification output of relay normally open contact termination, the input termination main power source of full-bridge rectification, the normally-closed contact end of relay also meets the control coil L (that is: tripping coil) of magnetictrip.
On the basis of technique scheme, said logic identification circuit comprises at least one positive-negative-positive triode, the emitter of the positive-negative-positive triode in the output of reference circuit and the logic identification circuit is connected, the base stage of the positive-negative-positive triode in the output of sample circuit and the logic identification circuit is connected, and the collector electrode of the positive-negative-positive triode in the logic identification circuit and the input of delay circuit are connected.
On the basis of technique scheme, the model of described main circuit breaker is DZ47.
Fig. 2 is a specific embodiment of the present utility model, and as shown in Figure 2, described sample circuit comprises: resistance R 2, diode D5, resistance R 3, resistance R 5, capacitor C 2, capacitor C 4;
One end of resistance R 2 and the phase line of main circuit breaker are connected, and the other end of resistance R 2 is connected with the positive pole of diode D5,
The negative pole of diode D5 is connected with an end of resistance R 3, an end of resistance R 5, the positive pole of capacitor C 4, the positive pole of capacitor C 2 respectively,
The equal ground connection of the negative pole of the other end of resistance R 3 and capacitor C 4.
Described logic identification circuit comprises: triode Q1, capacitor C 3, diode D9, resistance R 6, diode D12;
The base stage B of triode Q1 is connected with the other end of resistance R 5,
The negative pole of capacitor C 2 is connected with the emitter E of triode Q1,
One end of the collector electrode of triode Q1 and resistance R 6 is connected,
The other end of resistance R 6 is connected with the positive pole of diode D9, the positive pole of diode D12, the positive pole of capacitor C 3 respectively,
The negative pole of diode D12 is connected with the positive pole of capacitor C 2,
The minus earth of capacitor C 3.
Under voltage, overvoltage sampled signal are sent into the base stage of triode Q1 from resistance R 3 and the common port taking-up of diode D5.
The overvoltage sampled signal is sent into the negative pole of voltage-stabiliser tube D12 from resistance R 3 and the common port taking-up of diode D5;
Brownout signal is by resistance R 6 outputs;
Send into delay circuit with the overvoltage signal of the anodal output of voltage-stabiliser tube D12 in the common port merging of diode D9, voltage-stabiliser tube D12 capacitor C 3, resistance R 6 then.
Described delay circuit comprises: capacitor C 6;
Capacitor C 6 is in parallel with diode D13.The logic discrimination signal outputs to delay circuit by the common port of resistance R 6 and voltage-stabiliser tube D12.The logic discrimination signal is delayed time through delay circuit, is sent into the base stage of ON-OFF control circuit Q2 by the negative pole output of D9.
Described reference circuit comprises: resistance R 4, diode D6, diode D13;
The anodal of one end of resistance R 4, diode D6 all is connected with the emitter E of triode Q1,
The negative pole of the negative pole of diode D6, diode D13 all is connected with the negative pole of diode D9,
The plus earth of diode D13.
Described current rectifying and wave filtering circuit comprises: diode D1, D2, D3, D4, capacitor C 0, resistance R 1, capacitor C 5;
The negative pole of the negative pole of diode D2, diode D4 all is connected with the other end of resistance R 4,
The negative pole of the negative pole of diode D2, diode D4 also is connected with the positive pole of capacitor C 0, the minus earth of capacitor C 0,
The negative pole of diode D1 is connected with the positive pole of diode D2,
The negative pole of diode D3 is connected with the positive pole of diode D4,
The plus earth of the positive pole of diode D1, diode D3,
The negative pole of diode D3 is also connected to the zero line of AC power,
The negative pole of diode D1 is connected with an end of resistance R 1, an end of capacitor C 5 respectively,
The other end of the other end of resistance R 1, capacitor C 5 all links to each other with the end that resistance R 2 is connected with the phase line of main circuit breaker.
The 12V voltage of current rectifying and wave filtering circuit voltage stabilizing output inserts the emitter of Q1 through resistance R 4 as the benchmark level of logic identification circuit.
Described ON-OFF control circuit comprises: the control coil L of the triode Q2 of NPN shape, miniature relay J1, J2, magnetictrip, energy storage capacitor C1; Described magnetictrip can adopt existing techniques in realizing,
The negative pole of diode D9 is connected with the base stage of triode Q2,
Miniature relay J1 is the 12V miniature relay, the negative pole of its relay coil one terminating diode D2, and the relay coil other end connects the collector electrode of triode Q2,
The grounded emitter of triode Q2,
One end of common port connection small relay J 2 coils of miniature relay J1 contact,
The end that the other end of miniature relay J2 coil and resistance R 2 are connected with the phase line of main circuit breaker link to each other (that is: the phase line that connects AC power),
Miniature relay J1 normally-closed contact connects the zero line of AC power,
Energy storage capacitor C1 is the above high-voltage capacitance of withstand voltage 450VC, and energy storage capacitor C1 is parallel to the common port of miniature relay J2 contact,
Two normally-closed contacts of miniature relay J2 are in parallel with the control coil L of magnetictrip,
Two normally opened contacts of miniature relay J2 are connected with the negative pole of diode D7, the positive pole of diode D10 respectively,
Diode D7, D8, D10, D11 form full-bridge rectification, and the polarity of energy storage capacitor C1 is consistent with the polarity of full-bridge rectification output,
The positive pole of diode D7 links to each other with the end that resistance R 2 is connected with the phase line of main circuit breaker,
The positive pole of diode D8 connects the zero line of AC power.That is: energy storage capacitor C1 is parallel to the common port of relay J 2 contacts of control circuit, the polarity of full-bridge rectification D7, the D8 of the polarity of energy storage capacitor C1 and relay normally open contact termination, D10, D11 output is consistent, the input of the full-bridge rectification power supply that gets access to grid, between two normally opened contacts of output termination J2, two normally-closed contact ends of relay J 2 also connect tripping coil.
The operation principle of power supply power failure shunted exciter tripping described in the utility model, overvoltage under voltage protection miniature circuit breaker is as follows:
Power supply power failure shunted exciter tripping described in the utility model; overvoltage under voltage protection miniature circuit breaker is by current rectifying and wave filtering circuit; sample circuit; reference circuit; the logic identification circuit; delay circuit; ON-OFF control circuit; main circuit breaker is formed; wherein: the output of sample circuit inserts the base stage of the triode Q1 of logic identification circuit; the output of reference circuit inserts the emitter of the triode Q1 of logic identification circuit; the output control signal of logic identification circuit is by the collector electrode input time delay circuit of triode Q1; the output of delay circuit inserts the ON-OFF control circuit that comprises triode Q2, two normally-closed contact ends of the magnetictrip coil control relay J2 of ON-OFF control circuit.
ON-OFF control circuit is made up of the control coil L of miniature relay J1, miniature relay J2, triode Q2, magnetictrip, J1 is the 12V miniature relay, its coil one terminating diode D2, the common point that the D4 negative pole is connected with resistance R 4, the collector electrode of another termination switch triode Q2 of relay coil, the emitter of Q2 connects the ground of current rectifying and wave filtering circuit.One end of the public relay termination J2 coil of miniature relay J1 contact, the phase line of another termination AC power of J2 coil, miniature relay J1 normally-closed contact connects the zero line of AC power.Energy storage capacitor C1 is a high-voltage capacitance, more than the withstand voltage 450VC, energy storage capacitor C1 is parallel to the common port of relay J 2 contacts of control circuit, the polarity of full-bridge rectification D7, the D8 of the polarity of energy storage electrochemical capacitor and relay normally open contact termination, D10, D11 output is consistent, the input of the full-bridge rectification power supply that gets access to grid, between two normally opened contacts of output termination J2, two normally-closed contact ends of relay J 2 also connect tripping coil.
Utilize the magnetictrip acting to promote the breaker open operation of main circuit.
When the major loop electrical network just often, sampled signal is greater than base-level signal, logical circuit output low level, not conducting of ON-OFF control circuit.
When three phase mains during under-voltage or overvoltage; sampled signal is less than base-level signal; differentiate the output high level through the logic identification circuit; the trigger switch control circuit conducting after the delay circuit time-delay of this high level; the miniature relay J1 control coil of control circuit is got; thereby the normally-closed contact of miniature relay J1 disconnects and makes miniature relay J2 control coil dead electricity; small-sized disconnected relay J 2 normally opened contacts and common disconnect; common is connected with normally-closed contact; the energy storage capacitor and the electromagnetic trip coil between normally-closed contact that are connected between miniature relay J2 common are connected; the energy of energy storage capacitor storage makes electromagnetic trip controller coil get the power supply of the disconnected power consumption equipment of TURP, protects power consumption equipment.
When line voltage is higher than default overvoltage value; make the threshold voltage of the mid-point voltage of R3 and D5 greater than voltage stabilizing didoe D12; the voltage stabilizing didoe conducting; the conducting of trigger switch control circuit; it is electric that the miniature relay J1 control coil of control circuit is got, J2 control coil dead electricity, thus make breaker open operation in the main circuit; cut off the power supply of power consumption equipment, the protection power consumption equipment.
Specifically, the sample circuit of being made up of diode D5, resistance R 3, resistance R 5, capacitor C 2, capacitor C 4 is delivered to sampled signal the base stage of the Q1 of the logical circuit of being made up of capacitor C 2, triode Q1, capacitor C 3, diode D9, diode D12, resistance R 6.By Q1 with sampled signal be connected on the Q1 emitter by resistance R 4, diode D6, the reference voltage source that diode D13 forms compares, regulating R3 makes its midpoint potential just often be higher than reference level at line voltage, and below 280VC, be lower than the threshold voltage master of voltage-stabiliser tube D12, because triode Q1 is a positive-negative-positive, triode ends when base voltage is higher than emitter voltage, logic identification circuit output low level, when electric network source is under-voltage, the sampling voltage signal is less than reference voltage 12V, the conducting of triode positively biased, logic identification circuit output high level is realized under-voltage logic discrimination function; When line voltage reached the predeterminated voltage value, the mid-point voltage of resistance R 3 diode D5 was higher than the threshold voltage of voltage-stabiliser tube D12, and the D12 conducting realizes superpotential logic discrimination function.This level is via capacitor C 3; C6; resistance R 6; send into by miniature relay J1 after the delay circuit time-delay that diode D9 forms; miniature relay J2; triode Q2; the base stage of the ON-OFF control circuit Q2 that the control coil of magnetictrip is formed; make triode Q2 conducting; 12V miniature relay J1 coil gets electric adhesive; the J2 coil losing electricity; in like manner; when electric network source has a power failure; J2 coil also dead electricity discharges J2; between the J2 common and the energy storage capacitor that connects connect the coil of the magnetictrip between its contact normal-closed end; the push rod that the coil of magnetictrip gets electric promotion magnetictrip makes the miniature circuit breaker separating brake of main circuit; cut off the power supply of power consumption equipment, the protection power consumption equipment.Delay circuit can effectively be avoided the instantaneous interference signal in the electric power network, has improved the reliability and stability of protector greatly.Regulating D5, R3 makes its midpoint potential just often be lower than the threshold voltage of voltage stabilizing didoe D12 at line voltage; when being higher than default overvoltage value, line voltage make the midpoint potential of D5, R3 be higher than the threshold voltage of voltage stabilizing didoe; the conducting of voltage stabilizing didoe D12 conducting trigger switch control circuit; the magnetictrip control coil is got; drive the breaker open operation of main circuit; cut off the power supply of power consumption equipment, the protection power consumption equipment.
Claims (7)
1. power supply power failure shunted exciter tripping, overvoltage under voltage protection miniature circuit breaker is characterized in that:
The sample of signal end of the input of sample circuit and main circuit breaker is connected,
The output of sample circuit is connected with the signal input part of logic identification circuit,
The reference signal input of the output of reference circuit and logic identification circuit is connected,
The output of logic identification circuit is connected with the input of delay circuit,
The output of delay circuit is connected with the input of ON-OFF control circuit,
The output of ON-OFF control circuit is connected with the signal input end of main circuit breaker;
For ON-OFF control circuit provides the current rectifying and wave filtering circuit of power supply is full-wave rectifier power supply.
2. power supply power failure shunted exciter tripping as claimed in claim 1, overvoltage under voltage protection miniature circuit breaker; it is characterized in that: the output signal of main circuit breaker is by the normally open contact output of miniature relay, and described normally open contact is connected with the actuating coil of the relay of ON-OFF control circuit and is parallel to both ends of power then.
3. power supply power failure shunted exciter tripping as claimed in claim 1, overvoltage under voltage protection miniature circuit breaker; it is characterized in that: be provided with magnetictrip and the energy storage capacitor that is connected with the control coil L of magnetictrip in the ON-OFF control circuit, described energy storage capacitor is high-pressure electrolysis electric capacity or polarity free capacitor.
4. power supply power failure shunted exciter tripping as claimed in claim 1, overvoltage under voltage protection miniature circuit breaker; it is characterized in that: energy storage capacitor is parallel to the common port of the relay contact in the ON-OFF control circuit; the polarity of energy storage capacitor is consistent with the polarity of the full-bridge rectification output of relay normally open contact termination; the input termination main power source of full-bridge rectification, the normally-closed contact end of relay also meets the control coil L of magnetictrip.
5. power supply power failure shunted exciter tripping as claimed in claim 1, overvoltage under voltage protection miniature circuit breaker; it is characterized in that: said logic identification circuit comprises at least one positive-negative-positive triode; the emitter of the positive-negative-positive triode in the output of reference circuit and the logic identification circuit is connected; the base stage of the positive-negative-positive triode in the output of sample circuit and the logic identification circuit is connected, and the collector electrode of the positive-negative-positive triode in the logic identification circuit and the input of delay circuit are connected.
6. as claim 1 or 2 or 3 or 4 or 5 described power supply power failure shunted exciter trippings, overvoltage under voltage protection miniature circuit breaker, it is characterized in that: the model of described main circuit breaker is DZ47.
7. power supply power failure shunted exciter tripping as claimed in claim 6, overvoltage under voltage protection miniature circuit breaker, it is characterized in that: described sample circuit comprises: resistance R 2, diode D5, resistance R 3, resistance R 5, capacitor C 2, capacitor C 4;
One end of resistance R 2 and the phase line of main circuit breaker are connected, and the other end of resistance R 2 is connected with the positive pole of diode D5,
The negative pole of diode D5 is connected with an end of resistance R 3, an end of resistance R 5, the positive pole of capacitor C 4, the positive pole of capacitor C 2 respectively,
The equal ground connection of the negative pole of the other end of resistance R 3 and capacitor C 4;
Described logic identification circuit comprises: triode Q1, capacitor C 3, diode D9, resistance R 6, diode D12;
The base stage B of triode Q1 is connected with the other end of resistance R 5,
The negative pole of capacitor C 2 is connected with the emitter E of triode Q1,
One end of the collector electrode of triode Q1 and resistance R 6 is connected,
The other end of resistance R 6 is connected with the positive pole of diode D9, the positive pole of diode D12, the positive pole of capacitor C 3 respectively,
The negative pole of diode D12 is connected with the positive pole of capacitor C 2,
The minus earth of capacitor C 3;
Described delay circuit comprises: capacitor C 6;
Capacitor C 6 is in parallel with diode D13;
Described reference circuit comprises: resistance R 4, diode D6, diode D13;
The anodal of one end of resistance R 4, diode D6 all is connected with the emitter E of triode Q1,
The negative pole of the negative pole of diode D6, diode D13 all is connected with the negative pole of diode D9,
The plus earth of diode D13;
Described current rectifying and wave filtering circuit comprises: diode D1, D2, D3, D4, capacitor C 0, resistance R 1, capacitor C 5;
The negative pole of the negative pole of diode D2, diode D4 all is connected with the other end of resistance R 4,
The negative pole of the negative pole of diode D2, diode D4 also is connected with the positive pole of capacitor C 0, the minus earth of capacitor C 0,
The negative pole of diode D1 is connected with the positive pole of diode D2,
The negative pole of diode D3 is connected with the positive pole of diode D4,
The plus earth of the positive pole of diode D1, diode D3,
The negative pole of diode D3 is also connected to the zero line of AC power,
The negative pole of diode D1 is connected with an end of resistance R 1, an end of capacitor C 5 respectively,
The other end of the other end of resistance R 1, capacitor C 5 all links to each other with the end that resistance R 2 is connected with the phase line of main circuit breaker;
Described ON-OFF control circuit comprises: the control coil L of the triode Q2 of NPN shape, miniature relay J1, J2, magnetictrip, energy storage capacitor C1;
The negative pole of diode D9 is connected with the base stage of triode Q2,
Miniature relay J1 is the 12V miniature relay, the negative pole of its relay coil one terminating diode D2, and the relay coil other end connects the collector electrode of triode Q2,
The grounded emitter of triode Q2,
One end of common port connection small relay J 2 coils of miniature relay J1 contact,
The other end of miniature relay J2 coil links to each other with the end that resistance R 2 is connected with the phase line of main circuit breaker,
Miniature relay J1 normally-closed contact connects the zero line of AC power,
Energy storage capacitor C1 is the above high-voltage capacitance of withstand voltage 450VC, and energy storage capacitor C1 is parallel to the common port of miniature relay J2 contact,
Two normally-closed contacts of miniature relay J2 are in parallel with the control coil L of magnetictrip,
Two normally opened contacts of miniature relay J2 are connected with the negative pole of diode D7, the positive pole of diode D10 respectively,
Diode D7, D8, D10, D11 form full-bridge rectification, and the polarity of energy storage capacitor C1 is consistent with the polarity of full-bridge rectification output,
The positive pole of diode D7 links to each other with the end that resistance R 2 is connected with the phase line of main circuit breaker,
The positive pole of diode D8 connects the zero line of AC power.
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| CN2010202760482U CN201717601U (en) | 2010-07-30 | 2010-07-30 | Power supply failure shunt trip and overvoltage, under-voltage protection miniature circuit breaker |
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| CN2010202760482U CN201717601U (en) | 2010-07-30 | 2010-07-30 | Power supply failure shunt trip and overvoltage, under-voltage protection miniature circuit breaker |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102761096A (en) * | 2011-04-28 | 2012-10-31 | 西门子公司 | Undervoltage-overvoltage protection device and method |
| CN102856133A (en) * | 2011-06-29 | 2013-01-02 | 西门子公司 | Electric current supply device of tripping mechanism and circuit breaker and control method of electric current supply device |
| CN103094877A (en) * | 2011-10-28 | 2013-05-08 | 西门子公司 | Undervoltage-overvoltage protection device and method |
| CN106026015A (en) * | 2016-08-02 | 2016-10-12 | 德力西电气有限公司 | Line overvoltage protection circuit with overvoltage alarm tripping function |
| CN107910850A (en) * | 2017-12-27 | 2018-04-13 | 德力西电气有限公司 | A kind of breaker with short time duty device for under-voltage releasing equipment |
| CN112953479A (en) * | 2019-12-11 | 2021-06-11 | 国网福建省电力有限公司福州供电公司 | Circuit breaker accessory protection module |
-
2010
- 2010-07-30 CN CN2010202760482U patent/CN201717601U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102761096A (en) * | 2011-04-28 | 2012-10-31 | 西门子公司 | Undervoltage-overvoltage protection device and method |
| CN102761096B (en) * | 2011-04-28 | 2015-10-14 | 西门子公司 | Undervoltage-overvolprotection protection device and method |
| CN102856133A (en) * | 2011-06-29 | 2013-01-02 | 西门子公司 | Electric current supply device of tripping mechanism and circuit breaker and control method of electric current supply device |
| CN102856133B (en) * | 2011-06-29 | 2015-04-29 | 西门子公司 | Electric current supply device of tripping mechanism and circuit breaker and control method of electric current supply device |
| CN103094877A (en) * | 2011-10-28 | 2013-05-08 | 西门子公司 | Undervoltage-overvoltage protection device and method |
| CN103094877B (en) * | 2011-10-28 | 2015-08-19 | 西门子公司 | Undervoltage-overvolprotection protection device and method |
| CN106026015A (en) * | 2016-08-02 | 2016-10-12 | 德力西电气有限公司 | Line overvoltage protection circuit with overvoltage alarm tripping function |
| CN106026015B (en) * | 2016-08-02 | 2018-11-27 | 德力西电气有限公司 | A kind of Line over-voltage protection circuit with over voltage alarm tripping |
| CN107910850A (en) * | 2017-12-27 | 2018-04-13 | 德力西电气有限公司 | A kind of breaker with short time duty device for under-voltage releasing equipment |
| CN112953479A (en) * | 2019-12-11 | 2021-06-11 | 国网福建省电力有限公司福州供电公司 | Circuit breaker accessory protection module |
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| C14 | Grant of patent or utility model | ||
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