CN201174572Y - Residual current protection device - Google Patents
Residual current protection device Download PDFInfo
- Publication number
- CN201174572Y CN201174572Y CNU2008200334924U CN200820033492U CN201174572Y CN 201174572 Y CN201174572 Y CN 201174572Y CN U2008200334924 U CNU2008200334924 U CN U2008200334924U CN 200820033492 U CN200820033492 U CN 200820033492U CN 201174572 Y CN201174572 Y CN 201174572Y
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- China
- Prior art keywords
- contactor
- power supply
- diode
- coil
- residual current
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model provides a residual current protective device, which is composed of a residue current relay and an AC contactor and developed from the residual current relay in the prior art by adding an additional silencing/energy saving module of the AC contactor. One end of the silencing/energy saving module is connected with an actuating and control circuit of the residual current relay, and the other end is connected with a loop of the AC contactor. The residual current relay provides an AC rating voltage to make the AC contactor pull in, then the residual current relay changes to provide DC low voltage for the AC contactor to maintain the pull-in status of the AC contactor, to keep the AC contactor in the DC hold status, thereby reducing the electricity consumption for more than 95 percent, and avoiding any AC noise, and achieving the effect of preventing lightening strike and protecting the circuit from being burnt.
Description
Technical field
The utility model relates to the Aftercurrent protecting equipment that a kind of residual current relay and A.C. contactor are combined into.Relate in particular to a kind of noise reduction, energy-conservation Aftercurrent protecting equipment.
Background technology:
Residual current relay and A.C. contactor are combined into Aftercurrent protecting equipment, are extensive use of in low-voltage distribution system.A.C. contactor is a kind of inductance element in this composite set, and its power consumption is big, and power factor is low, and particularly in use for some time, the electromagnetic system adhesive of A.C. contactor is bad, and temperature raises, and can cause solenoid to burn out.Simultaneously, the electromagnetic system of A.C. contactor can produce noise pollution, and the noise of generation is an electromagnetic noise, is inevitably, can only be limited.So it is big how to solve the A.C. contactor AC noise, power consumption is big, temperature rise, and the problem that power factor is low has become A.C. contactor needs the technical problem underlying that solves in using.Current residual current relay and the operation of A.C. contactor composite set have two kinds of situations: the one, and residual current relay and A.C. contactor combined running.In this kind situation, do not have battery saving arrangement, energy consumption is big during operation, and noise is arranged, and ac contactor coil often burns out.The 2nd, residual current relay and A.C. contactor (energy-saving module is arranged) combined running.This kind situation, A.C. contactor carries energy-saving module, and than first kind of situation economize on electricity about 60%, noiselessness, contactor coil burn out situation to be reduced during operation.
The utility model content:
It is better that the technical problem that the utility model solved provides a kind of energy-saving effect, noiseless Aftercurrent protecting equipment.And solve the energy saver wiring complicated problems of external A.C. contactor.
The utility model is achieved through the following technical solutions: a kind of Aftercurrent protecting equipment; comprise residual current relay 1; A.C. contactor 2; residual current relay 1 comprises power supply, sample circuit, amplifying circuit, comparison circuit, execution control circuit 4; A.C. contactor 2 comprises coil 5; be provided with A.C. contactor noise reduction, power-saving module 3 in the residual current relay 1; one end of A.C. contactor noise reduction, power-saving module 3 is connected with execution control circuit 4, and the other end is connected with ac contactor coil 5.
Affiliated A.C. contactor noise reduction, power-saving module 3 comprises single-phase bridge full-wave rectifying circuit 6, ac contactor coil power supply circuits 7, ac power transformer B1, coil power supply power supply switch circuit 8, the elementary end a of ac contactor coil power supply circuits 7 one end f and transformer B1 connects the A end of AC power, the elementary end b of the other end e of ac contactor coil power supply circuits 7 and transformer B1 connects the B end of AC power, one end of the interchange input of B1 level of ac power transformer c termination single-phase bridge full-wave rectifying circuit 6, the other end of the interchange input of B1 level of ac power transformer d termination single-phase bridge full-wave rectifying circuit 6, the DC side cathode output end of single-phase bridge full-wave rectifying circuit 6 connects the electrode input end of ac contactor coil power supply circuits 7, the DC side cathode output end of single-phase bridge full-wave rectifying circuit 6 connects the negative input of ac contactor coil power supply circuits 7, two output g of ac contactor coil power supply circuits 7, h connects the two ends of ac contactor coil respectively, the positive-negative power of coil power supply power supply switch circuit 8 connects the positive-negative power end of residual current relay internal circuit, and the control input end F of coil power supply power supply switch circuit 8 connects the switching signal output in the residual current relay.
As a kind of improvement of the present utility model, ac contactor coil power supply circuits 7 are by the first diode D1, the second diode D2, the contact K1-1 of first relay K 1, K1-2 forms, the anode of the first diode D1 connects the DC side cathode output end and ac contactor coil one end of single-phase bridge full-wave rectifying circuit 6, the negative electrode of the second diode D2 connects the DC side cathode output end and the ac contactor coil other end of single-phase bridge full-wave rectifying circuit 6, the negative electrode of the first diode D1 is succeeded K1-1 contact one side of electrical equipment K1, another side joint AC power B of K1-1 contact, the anode of the second diode D2 is succeeded K1-2 contact one side of electrical equipment K1, another side joint AC power A of K1-2 contact.
Coil power supply power supply switch circuit 8 of the present utility model is by first resistance R 1, second resistance R 2, the first triode T1, the second triode T2, the first capacitor C1, the 3rd diode D3, the 4th diode D4, the coil of first relay K 1 is formed, second resistance R 2, the coil of the negative electrode of the 3rd diode D3 and relay K 1 links together and is connected to the positive pole of the DC power supply that residual current relay provides, the collector electrode of the first triode T1, the emitter of the anode of the 4th diode D4 and the second triode T2 links together and is connected to the negative pole of the DC power supply that residual current relay provides, the base stage of one termination, the first triode T1 of first resistance R 1, one end of second resistance R 2 connects the emitter of the first triode T1 with an end of first capacitor C 1, one end of first capacitor C 1, the negative electrode of the 4th diode D4 links together and connects the base stage of the second triode T2, the collector electrode of the 3rd diode D3 anode and the second triode T2 links together and succeeds the other end of electrical equipment K1 coil, and the other end F of first resistance R 1 connects the execution control circuit of residual current relay.
The utility model utilizes the execution control circuit 4 of residual current relay 1 to send the F end that control signal is given coil power supply power supply switch circuit 8, the first triode T1 is ended, utilize the charging current of the first capacitor C1 to make the second triode T2 conducting, relay K 1 adhesive, K1-1, K1-2 contact closure make A.C. contactor 1 adhesive action.When first capacitor C1 charging end, the second triode T2 ends, and relay K 1 discharges, and K1-1, K1-2 contact are opened, and ac contactor coil 5 is by 6 power supplies of single-phase bridge full-wave rectifying circuit.Be that residual current relay provides ac rated voltage to make the A.C. contactor adhesive, residual current relay changes the adhesive of keeping A.C. contactor for DC low-voltage to A.C. contactor after the A.C. contactor adhesive, make A.C. contactor be in the direct current hold mode, reached noise elimination, energy-saving effect.The utility model reduces more than 95% A.C. contactor power consumption, does not have AC noise fully.During the A.C. contactor operation,, play preventing thunderbolt, burn out the effect of coil because the buffer action of K1-1, K1-2 disconnects ac contactor coil and AC power fully.
Description of drawings:
Fig. 1 is a structured flowchart of the present utility model.
Fig. 2 is the electrical block diagram of A.C. contactor noise reduction in the utility model, power-saving module 3.
Embodiment:
Embodiment one: in conjunction with Fig. 1 and Fig. 2 embodiment of the present utility model is described.This sampling except existing residual current relay of this embodiment is amplified, compares, is carried out outside control, the power circuit, is provided with A.C. contactor noise reduction, power-saving module 3 in residual current relay 1.A.C. contactor noise reduction, power-saving module 3 have comprised single-phase bridge full-wave rectifying circuit 6, ac contactor coil power supply circuits 7, ac power transformer B1, coil power supply power supply switch circuit 8.The elementary end a of ac contactor coil power supply circuits 7 one end f and transformer B1 connects the A end of AC power, and the elementary end b of the other end e of ac contactor coil power supply circuits 7 and transformer B1 connects the B end of AC power.One end of the interchange input of B1 level of ac power transformer c termination single-phase bridge full-wave rectifying circuit 6, the other end of the interchange input of B1 level of ac power transformer d termination single-phase bridge full-wave rectifying circuit 6.The DC side cathode output end of single-phase bridge full-wave rectifying circuit 6 connects the electrode input end of ac contactor coil power supply circuits 7, and the DC side cathode output end of single-phase bridge full-wave rectifying circuit 6 connects the negative input of ac contactor coil power supply circuits 7.Two output g, h of ac contactor coil power supply circuits 7 connect the two ends of ac contactor coil respectively.The positive-negative power of coil power supply power supply switch circuit 8 connects the positive-negative power end of residual current relay internal circuit.The control input end F of coil power supply power supply switch circuit 8 connects the switching signal output in the residual current relay.Coil power supply power supply switch circuit 8 is by first resistance R, 1, the second resistance R, 2, the first triode T1, the second triode T2, and the first capacitor C1, the 3rd diode D3, the 4th diode D4, the coil of first relay K 1 is formed.Second resistance R 2, the coil of the negative electrode of the 3rd diode D3 and relay K 1 links together and is connected to the positive pole of the DC power supply that residual current relay provides, the collector electrode of the first triode T1, the emitter of the anode of the 4th diode D4 and the second triode T2 link together and are connected to the negative pole of the DC power supply that residual current relay provides.The base stage of one termination, the first triode T1 of first resistance R 1.One end of second resistance R 2 connects the emitter of the first triode T1 with an end of first capacitor C 1.One end of first capacitor C 1, the negative electrode of the 4th diode D4 link together and connect the base stage of the second triode T2.The collector electrode of the 3rd diode D3 anode and the second triode T2 links together and succeeds the other end of electrical equipment K1 coil.The other end F of first resistance R 1 connects the execution control circuit 4 of residual current relay.Residual current relay 1 is carried out control circuit 4 and is sent the F end that control signal is given coil power supply power supply switch circuit 8, the first triode T1 is ended, utilize the charging current of the first capacitor C1 to make the second triode T2 conducting, relay K 1 adhesive, K1-1, K1-2 contact closure make A.C. contactor 1 adhesive action.When first capacitor C1 charging end, the second triode T2 ends, and relay K 1 discharges, and K1-1, K1-2 contact are opened, and ac contactor coil 5 is by 6 power supplies of single-phase bridge full-wave rectifying circuit.
Embodiment two: the difference of present embodiment and embodiment one be ac contactor coil power supply circuits 7 by the first diode D1, the second diode D2, contact K1-1, the K1-2 of first relay K 1 form.The anode of the first diode D1 connects the DC side cathode output end and ac contactor coil one end of single-phase bridge full-wave rectifying circuit 6, the negative electrode of the second diode D2 connects the DC side cathode output end and the ac contactor coil other end of single-phase bridge full-wave rectifying circuit 6, the negative electrode of the first diode D1 is succeeded K1-1 contact one side of electrical equipment K1, another side joint AC power B of K1-1 contact, the anode of the second diode D2 is succeeded K1-2 contact one side of electrical equipment K1, another side joint AC power A of K1-2 contact.When K1 relay K 1-1, the K1-2 closing of contact, from AC power A, relay contact K1-2, the second diode D2, ac contactor coil 5, the first diode D1, relay contact K1-1 forms path, A.C. contactor adhesive to exchanging electric current B end.As relay contact K1-1, K1-2 opens, and individual event full-wave bridge rectifier circuit 6 gives ac contactor coil 5 power supplies, and A.C. contactor is in the direct current hold mode.
Claims (4)
1, a kind of Aftercurrent protecting equipment; comprise residual current relay (1); A.C. contactor (2); residual current relay (1) comprises power supply, sample circuit, amplifying circuit, comparison circuit, execution control circuit (4); A.C. contactor (2) comprises coil (5); it is characterized in that: be provided with A.C. contactor noise reduction, power-saving module (3) in the described residual current relay (1); one end of A.C. contactor noise reduction, power-saving module (3) is connected with execution control circuit (4), and the other end is connected with ac contactor coil (5).
2; Aftercurrent protecting equipment according to claim 1; it is characterized in that: described A.C. contactor noise reduction; power-saving module (3) comprises single-phase bridge full-wave rectifying circuit (6); ac contactor coil power supply circuits (7); ac power transformer (B1); coil power supply power supply switch circuit (8); the elementary end (a) of one end (f) of ac contactor coil power supply circuits (7) and transformer (B1) connects (A) end of AC power; the other end (e) of ac contactor coil power supply circuits (7) and the elementary end of ac power transformer (B1) (b) connect (B) end of AC power; one end of the interchange input of ac power transformer (B1) secondary (c) termination single-phase bridge full-wave rectifying circuit (6); the other end of the interchange input of ac power transformer (B1) secondary (d) termination single-phase bridge full-wave rectifying circuit (6); the DC side cathode output end of single-phase bridge full-wave rectifying circuit (6) connects the electrode input end of ac contactor coil power supply circuits (7); the DC side cathode output end of single-phase bridge full-wave rectifying circuit (6) connects the negative input of ac contactor coil power supply circuits (7); two outputs (g) of ac contactor coil power supply circuits (7); (h) connect the two ends of ac contactor coil respectively; the positive-negative power of coil power supply power supply switch circuit (8) connects the positive-negative power end of residual current relay internal circuit, and the control input end (F) of coil power supply power supply switch circuit (8) connects the switching signal output in the residual current relay.
3; Aftercurrent protecting equipment according to claim 1; it is characterized in that: affiliated ac contactor coil power supply circuits (7) are by first diode (D1); second diode (D2); the contact (K1-1) of first relay (K1); (K1-2) form; the anode of first diode (D1) connects the DC side cathode output end and ac contactor coil one end of single-phase bridge full-wave rectifying circuit (6); the negative electrode of second diode (D2) connects the DC side cathode output end and the ac contactor coil other end of single-phase bridge full-wave rectifying circuit (6); the negative electrode of first diode (D1) is succeeded (K1-1) contact one side of electrical equipment (K1); (K1-1) another side joint AC power (B) of contact; the anode of second diode (D2) is succeeded (K1-2) contact one side of electrical equipment (K1), (K1-2) another side joint AC power (A) of contact.
4; according to claim 1 or 2 or 3 described Aftercurrent protecting equipments; it is characterized in that: coil power supply power supply switch circuit (8) is by first resistance (R1); second resistance (R2); first triode (T1); second triode (T2); first capacitor (C1); the 3rd diode (D3); the 4th diode (D4); the coil of first relay (K1) is formed; second resistance (R2); the coil of the negative electrode of the 3rd diode (D3) and relay (K1) links together and is connected to the positive pole of the DC power supply that residual current relay provides; the collector electrode of first triode (T1); the emitter of the anode of the 4th diode (D4) and second triode (T2) links together and is connected to the negative pole of the DC power supply that residual current relay provides; the base stage of one termination, first triode (T1) of first resistance (R1); one end of second resistance (R2) connects the emitter of first triode (T1) with an end of first electric capacity (C1); one end of first electric capacity (C1); the negative electrode of the 4th diode (D4) links together and connects the base stage of second triode (T2); the collector electrode of the 3rd diode (D3) anode and second triode (T2) links together and succeeds the other end of electrical equipment (K1) coil, and the other end (F) of first resistance (R1) connects the execution control circuit of residual current relay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200334924U CN201174572Y (en) | 2008-03-25 | 2008-03-25 | Residual current protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200334924U CN201174572Y (en) | 2008-03-25 | 2008-03-25 | Residual current protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201174572Y true CN201174572Y (en) | 2008-12-31 |
Family
ID=40201700
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200334924U Expired - Fee Related CN201174572Y (en) | 2008-03-25 | 2008-03-25 | Residual current protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201174572Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106971911A (en) * | 2017-04-16 | 2017-07-21 | 金嘉宏 | A kind of AC contactor dc operatioin energy-saving device with defencive function |
| CN106997828A (en) * | 2017-04-24 | 2017-08-01 | 深圳飞沃拜特技术有限公司 | AC contactor controller and its control method |
-
2008
- 2008-03-25 CN CNU2008200334924U patent/CN201174572Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106971911A (en) * | 2017-04-16 | 2017-07-21 | 金嘉宏 | A kind of AC contactor dc operatioin energy-saving device with defencive function |
| CN106971911B (en) * | 2017-04-16 | 2018-08-28 | 金嘉宏 | A kind of AC contactor dc operatioin energy-saving device with defencive function |
| CN106997828A (en) * | 2017-04-24 | 2017-08-01 | 深圳飞沃拜特技术有限公司 | AC contactor controller and its control method |
| CN106997828B (en) * | 2017-04-24 | 2019-11-15 | 深圳飞沃拜特技术有限公司 | AC contactor controller and its control method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081231 Termination date: 20140325 |