CN1402411A - Automatic control device for diplex power change-over switch - Google Patents
Automatic control device for diplex power change-over switch Download PDFInfo
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- CN1402411A CN1402411A CN02138358.8A CN02138358A CN1402411A CN 1402411 A CN1402411 A CN 1402411A CN 02138358 A CN02138358 A CN 02138358A CN 1402411 A CN1402411 A CN 1402411A
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Abstract
The invented device belonging to the low-voltage distribution area includes the conversion circuit for collecting the control voltage and the switch signal, the rectified voltage regulator circuit, the self-throw and self-reset or self-throw and non self-reset functional circuit, the logic control circuit and the command output circuit. The invention possesses the advantages of reliable operation, easy of use, low cost, easy to be popularized. The simple circuit is adopted in the invention so as to prevent the electromagnetic interface caused by the complex circuit.
Description
The present invention relates to the switching device that a kind of power supply switches, particularly a kind of automatic control equipment of two-way three phase mains diverter switch belongs to the low-voltage distribution field.
In increasing important power supply occasion, as great social activities place, fire-fighting, chemical industry, metallurgical industry etc., except power supply commonly used, all need to be equipped with stand-by power supply, so that when using power cut-off always, automatically replace power supply power supply commonly used with stand-by power supply, guarantee the normal operation of important load, avoid or reduce personal injury and the property loss that causes because of power outage.China Patent No. is 00215488.9 to disclose a kind of " double cross stream automatic power-supply switch ", and this device adopts single-chip microcomputer and multiple circuit, can automatically stand-by power supply be inserted load in the moment of abnormity of power supply commonly used.But this device costs an arm and a leg, and is unfavorable for popularization and application, and the circuit complexity is vulnerable to electromagnetic interference, and maintenance is also inconvenient.
The objective of the invention is to provide a kind of automatic control equipment of double loop power supply diverter switch, its circuit is simple relatively, antijamming capability is strong, thereby reliability height, easy to use and safety; Because with low cost, cost performance is high, is more conducive to popularization and application.
A kind of automatic control equipment of double loop power supply diverter switch, it comprise control voltage and switching signal collection change-over circuit, regulator rectifier circuit, haul oneself willingly into runback and haul oneself willingly into not runback functional circuit, logic control circuit, instruction output circuit, the collection change-over circuit of described control voltage and switching signal is from power supply U commonly used
NOr stand-by power supply U
RTake out single phase alternating current (A.C.) voltage and offer regulator rectifier circuit, and the automatic switching signal of on off state is outputed to logic control circuit, the next signal of runback functional circuit provides corresponding switching signal according to hauling oneself willingly into runback and hauling oneself willingly into not again; Described regulator rectifier circuit provides the single-phase alternating current that comes to carry out rectifying and voltage-stabilizing the collection change-over circuit of controlling voltage and switching signal, and runback functional circuit, logic control circuit provide galvanic current to press in order to haul oneself willingly into runback and to haul oneself willingly into not; Describedly haul oneself willingly into runback and haul oneself willingly into not runback functional circuit, provide the user set signal to the collection change-over circuit of control voltage and switching signal; Described logic control circuit, the switching signal according to the collection change-over circuit of controlling voltage and switching signal is provided offers the instruction output circuit with logic control signal; Described instruction output circuit outputs to electronic switching mechanism Y with instruction, thereby will be connected to power supply U commonly used
NMains switch 1Q1 and be connected to stand-by power supply U
RMains switch 1Q2 switch to required state synchronously.
The automatic control equipment of double loop power supply diverter switch of the present invention, compared with prior art, its good effect is: circuit is simple, avoided because of the electromagnetic interference problem that adopts complicated circuit to cause, easy to use, reliable operation, cost is low, and the cost performance height is easy to market and popularizes.
The invention will be further described below in conjunction with the drawings and specific embodiments.
Fig. 1 is a block diagram of the present invention.
Fig. 2 is the collection change-over circuit figure of control voltage of the present invention and switching signal.
Fig. 3 is regulator rectifier circuit figure of the present invention.
Fig. 4 hauls oneself willingly into runback and hauls oneself willingly into not runback functional circuit for of the present invention.
Fig. 5 is logic control circuit figure of the present invention.
Fig. 6 is instruction output circuit figure of the present invention.
Referring to Fig. 2.The collection change-over circuit of control voltage and switching signal comprises relay coil 2KA1 and 2KA2, relay normally-closed contact 2KA1-1, two two synchronous contact 2KA2-1 of normally closed tetrad and relay normally-closed contact 4K1-1, normally-closed contact 4K1-1 one end and the power supply U commonly used of often opening of relay
NConnect, the normally-closed contact 4K1-1 other end is connected with an end and the two ends of often opening the normally-closed contact a of couple synchronous contact 2KA2-1 of normally closed tetrad of relay coil 2KA1, and the other end of normally-closed contact a is controlled voltage U with exchanging
cAn output L
oConnect the other end of relay coil 2KA1 and power supply U commonly used
NThe end of another normally-closed contact a ' of neutral line N and 2KA2-1 is connected, another output N of the other end of a ' and Uc
oConnect the end of relay normally-closed contact 2KA1-1 and stand-by power supply U
RConnect, the end of the end of the other end of normally-closed contact 2KA1-1 and relay coil 2KA2 and the normally opened contact b of 2KA2-1 is connected the output L of the other end of normally opened contact b and Uc
oConnect the other end of relay coil 2KA2 and stand-by power supply U
RThe end of another normally opened contact b ' of neutral line N ' and 2KA2-1 is connected, the output N of the other end of b ' and Uc
oConnect.4K1-1 is arranged to haul oneself willingly into runback and haul oneself willingly into normally-closed contact on the runback functional circuit repeat circuit 4K1 not.This circuit is from power supply U commonly used
NThe upper one phase (as the A phase) of getting of mains switch 1Q1 is as single phase alternating current (A.C.) control voltage commonly used, in addition from stand-by power supply U
RThe upper one phase (as A ' phase) of getting of mains switch 1Q2 is as standby single phase alternating current (A.C.) control voltage, all from L
o-N
oEnd output offers regulator rectifier circuit.
The adhesive condition of relay coil 2KA1 is a contact 4K1-1 closure, promptly hauls oneself willingly into runback and hauls oneself willingly into relay coil 4K1 dead electricity in the runback functional circuit not; And the adhesive condition of relay coil 2KA2 is a contact 2KA1-1 closure, i.e. relay coil 2KA1 dead electricity.
When the user selects " hauling oneself willingly into runback " function (referring to Fig. 4), the terminal 1 of selector switch 4S1 connects dead end 2, and then relay coil 4K1 is in power failure state all the time, and normally-closed contact 4K1-1 is closed (referring to Fig. 2) all the time, as power supply U commonly used
NDuring power supply, relay coil 2KA1 gets electric adhesive, causes normally-closed contact 2KA1-1 to disconnect, and then twoly normally closedly twoly often open the synchronous contact 2KA2-1 of tetrad and be in a, a ' closing of contact, the state that b, b ' contact disconnect, this moment is from power supply U commonly used
NUpper acquisition single phase alternating current (A.C.) control voltage, and in case power supply U commonly used
NAfter stopping power supply, relay coil 2KA1 dead electricity, stand-by power supply U
RThe normally-closed contact 2KA1-1 closure in loop, then relay coil 2KA2 gets electric adhesive action, causes two normally closed two synchronous contact 2KA2-1 actions of tetrad of often opening, and a, a ' contact disconnect, and b, b ' contact are closed simultaneously, and this moment is promptly from stand-by power supply U
RUpper acquisition single phase alternating current (A.C.) control voltage, power to regulator rectifier circuit; And as power supply U commonly used
NAfter recovering normally, as previously mentioned, because normally-closed contact 4K1-1 is in closure state all the time, relay coil 2KA1 gets electric, stand-by power supply U
RThe contact 2KA1-1 in loop disconnects, and relay coil 2KA2 dead electricity then causes and twoly normally closedly twoly often opens that the synchronous contact 2KA2-1 of tetrad returns to a, a ' contact is normally closed and b, b ' contact normally open, so again by stand-by power supply U
RSwitch to power supply U commonly used
NProvide interchange control voltage U to regulator rectifier circuit
c
When the user select be " hauling oneself willingly into not runback function " time, haul oneself willingly into runback and haul oneself willingly into the terminal 1 and terminal 3 UNICOMs of selector switch 4S1 in the runback functional circuit not.The power supply U that uses as usual
NStop power supply relay coil 2KA1 dead electricity then, stand-by power supply U
RThe normally-closed contact 2KA1-1 closure in loop, then relay coil 2KA2 gets electric adhesive action, causes two normally closed two synchronous contact 2KA2-1 actions of tetrad of often opening, and a, a ' contact disconnect, b, b ' closing of contact simultaneously, this moment is promptly from stand-by power supply U
RUpper acquisition single phase alternating current (A.C.) control voltage.Above-mentioned relay coil 2KA2 electric adhesive, also cause hauling oneself willingly into runback and haul oneself willingly into normally opened contact 2KA2-5 closure (referring to Fig. 4) in the runback functional circuit not, cause transistor 4V1 conducting, relay coil 4K1 gets electric, power supply U commonly used
NNormally-closed contact 4K1-1 in the interchange control voltage circuit that provides disconnects (referring to Fig. 2), under this state, even power supply U commonly used
NRecover normal, can be by stand-by power supply U yet
RBe transformed into power supply U commonly used
N, and continue by stand-by power supply U
RProvide interchange control voltage U to regulator rectifier circuit
c
Simultaneously, these switching informations that cause exchanging the control voltage transitions by the three-phase power switch switching, action conversion as relay coil 2KA1,2KA2, electromagnetism interlock by relay offers logic control circuit, form instruction output, thereby control two-way three phase mains diverter switch 1Q1,1Q2 carry out power supply according to " hauling oneself willingly into runback " or " hauling oneself willingly into not runback " function of prior setting and switch.
Referring to Fig. 3.Regulator rectifier circuit is made up of transformer 3T1, rectifier bridge 3A1, three terminal regulator 3A2, filter capacitor 3C1,3C2, adopts typical connected mode.Wherein elementary the connecing of transformer 3T1 exchanges the control voltage U
cThe terminal 1 of described three terminal regulator 3A2 is connected with "+" terminal of "+" lead-out terminal of rectifier bridge 3A1 and filter capacitor 3C1, its terminal 2 connect " ", its "+" lead-out terminal 3 is connected with "+" terminal of filter capacitor 3C2, from the stable direct-current control voltage Vcc of 2,3 ends output.
Referring to Fig. 4.Haul oneself willingly into runback and haul oneself willingly into not that the runback functional circuit comprises selector switch 4S1, current-limiting resistance 4R1, relay normally open contact 2KA2-5, triode 4V1 and relay coil 4K1, direct-current control voltage Vcc "+" end is connected with 1 end of selector switch 4S1,2 ends of 4S1 are dead end, its 3 end is connected with the end of current-limiting resistance 4R1 and the end of relay normally open contact 2KA2-5, the base stage of triode 4V1 is connected with the other end of current-limiting resistance 4R1, grounded emitter, relay coil 4K1 two ends are connected with the other end of relay normally open contact 2KA2-5 and the collector electrode of triode 4V1 respectively.Relay normally open contact 2KA2-5 is from the relay 2KA2 of the interchange control voltage supply circuit of stand-by power supply in the collection change-over circuit of control voltage and switching signal.The normally-closed contact 4K1-1 of relay 4K1 is serially connected with the interchange control voltage supply circuit of power supply commonly used in the collection change-over circuit of controlling voltage and switching signal.
As setting " hauling oneself willingly into not runback " function, then 1 of selector switch 4S1,3 terminations are logical.As power supply U commonly used
NOutage and make relay coil 2KA1 dead electricity, 2KA2 in the collection change-over circuit of control voltage and switching signal get electric (referring to Fig. 2), thus make stand-by power supply U
RDuring power supply, because normally opened contact 2KA2-5 transfers closure (referring to Fig. 4) to, make the collector loop conducting of triode 4V1, then relay coil 4K1 gets electricly, and disconnect because of normally-closed contact 4K1-1 in control voltage and the signaling conversion circuit this moment, and relay coil 2KA1 can not adhesive, stand-by power supply separating brake relay coil 5KR2 in the logic control circuit can conducting, thereby Backup Power Switch keep to close a floodgate, and power supply closing relay 5KN1 commonly used can conducting yet, thereby power supply U commonly used
NKeep separating brake, even power supply U commonly used
NRecover normal, can not restore electricity, and by stand-by power supply U
RContinue power supply, thereby realize the function of " hauling oneself willingly into not runback ".But as stand-by power supply U
RAfter stopping power supply, can switch to immediately and recover power supply U commonly used normally
NPower supply.As shown in Figure 2, stand-by power supply U
RAfter stopping power supply, relay coil 2KA2 dead electricity, its pair often opens two synchronous contact 2KA2-1 of normally closed tetrad by original b, b ' closure, and a, a ' disconnection are converted to b, b ' disconnection, a, a ' closure; Simultaneously because relay coil 2KA2 dead electricity, the normally opened contact 2KA2-5 that hauls oneself willingly into runback and haul oneself willingly in the runback functional circuit is not disconnected, and cause the relay coil 4K1 dead electricity (referring to Fig. 4) of collector circuit, and make normally-closed contact 4K1-1 recover the closure state (see figure 2), recover power supply U commonly used normally and make
NRecovery provides and exchanges the control voltage U
c, finally cause the switching of mains switch 1Q1,1Q2, make and recover power supply U commonly used normally
NDrop into powered operation once more.
And when selecting " hauling oneself willingly into runback " function, 1,3 ends of selector switch 4S1 are in open position, because of triode 4V1 can not get power supply, then relay coil 4K1 can not get electric, if this moment power supply U commonly used
NRecover normal, then remain closed because of the normally-closed contact 4K1-1 in the collection change-over circuit of control voltage and switching signal, relay coil 2KA1 gets electric adhesive, normally-closed contact 2KA1-1 is disconnected, cause relay coil 2KA2 dead electricity to discharge, so that the stand-by power supply separating brake relay coil 5KR2 conducting in the logic control circuit, make the Backup Power Switch separating brake, and power supply closing relay coil 5KN1 commonly used conducting is closed a floodgate power supply commonly used, recovers power supply U commonly used
NPower supply, thus realize the function of " hauling oneself willingly into runback ".
Referring to Fig. 5.5KN1 is power supply closing relay coil commonly used in logic control circuit, an end ground connection, the other end be connected to 1 end after normally opened contact 2KA1-2, normally-closed contact 5KR1-1 connect; 5KN2 is power supply separating brake relay coil commonly used, an end ground connection, the other end be connected to 1 end after normally-closed contact 2KA1-3, normally opened contact 2KA2-2 connect; 5KR1 is a stand-by power supply closing relay coil, an end ground connection, the other end be connected to 1 end after normally opened contact 2KA2-3, normally-closed contact 5KN1-1 connect; 5KR2 is a stand-by power supply separating brake relay coil, an end ground connection, the other end be connected to 1 end after normally opened contact 2KA1-4, normally-closed contact 2KA2-4 connect, 1 is terminated at direct-current control voltage Vcc.As power supply U commonly used
NWhen stopping power supply, the relay coil 2KA1 that causes controlling in the collection change-over circuit (referring to Fig. 2) of voltage and switching signal discharges, relay coil 2KA2 adhesive, and make normally opened contact 2KA1-2 and 2KA1-4 in the logic control circuit return to normally open and cause power supply closing relay coil 5KN1 commonly used and stand-by power supply separating brake relay coil 5KR2 outage, make normally opened contact 2KA2-2 and 2KA2-3 be transformed into closure state simultaneously and cause that power supply separating brake relay coil 5KN2 commonly used and stand-by power supply closing relay coil 5KR1 get, these logic control signals instruct electronic switching mechanism Y operation by the instruction output circuit.Mains switch 1Q1 separating brake commonly used and Backup Power Switch 1Q2 are closed a floodgate, make stand-by power supply U
RDrop into powered operation.As previously mentioned, to the different set of " hauling oneself willingly into runback ", " hauling oneself willingly into not runback ", the logical controlling signal instructs electronic switching mechanism to switch accordingly by the command signal output circuit.
Referring to Fig. 6.In the instruction output circuit, command signal outputs to six terminal: N-S1, N-S2, N-S3, R-S1, R-S2, the R-S3 end of the motor-operating mechanism among the electronic switching mechanism Y.Normally-closed contact 5KN2-2, normally opened contact 5KN1-2 connect between N-S1 and the N-S2 end, cause the normally opened contact 5KN1-2 closure in this circuit as the power supply closing relay coil commonly used 5KN1 conducting in the logic control circuit, be N-S1 and the conducting of N-S2 two ends, then electronic switching mechanism Y makes mains switch feed motion commonly used; Hold the normally opened contact 5KN2-1 that connects at N-S1 with N-S3, cause the normally opened contact 5KN2-1 closure in this circuit as the power supply separating brake relay coil commonly used 5KN2 conducting in the logic control circuit, be N-S1 and the conducting of N-S3 two ends, then electronic switching mechanism Y makes mains switch separating brake action commonly used; Between R-S1 and R-S2 two ends, be in series with normally-closed contact 5KR2-2 and normally opened contact 5KR1-2, cause the normally opened contact 5KR1-2 closure in this circuit as the stand-by power supply closing relay coil 5KR1 conducting in the logic control circuit, be R-S1 and the conducting of R-S2 two ends, then electronic switching mechanism Y makes the Backup Power Switch feed motion; At the R-S1 normally opened contact 5KR2-1 that connects with the R-S3 two ends, cause the normally opened contact 5KR2-1 closure in this circuit as the stand-by power supply separating brake relay coil 5KR2 conducting in the logic control circuit, be R-S1 and the conducting of R-S3 two ends, then electronic switching mechanism Y makes the action of Backup Power Switch separating brake.
Claims (3)
1, a kind of automatic control equipment of double loop power supply diverter switch, it is characterized in that it comprise control voltage and switching signal collection change-over circuit, regulator rectifier circuit, haul oneself willingly into runback and haul oneself willingly into not runback functional circuit, logic control circuit, instruction output circuit, the collection change-over circuit of described control voltage and switching signal is from power supply U commonly used
NOr stand-by power supply U
RTake out single phase alternating current (A.C.) voltage and offer regulator rectifier circuit, and the automatic switching signal of on off state is outputed to logic control circuit, the next signal of runback functional circuit provides corresponding switching signal according to hauling oneself willingly into runback and hauling oneself willingly into not again; Described regulator rectifier circuit provides the single-phase alternating current that comes to carry out rectifying and voltage-stabilizing the collection change-over circuit of controlling voltage and switching signal, and runback functional circuit, logic control circuit provide galvanic current to press in order to haul oneself willingly into runback and to haul oneself willingly into not; Describedly haul oneself willingly into runback and haul oneself willingly into not runback functional circuit, provide the user set signal to the collection change-over circuit of control voltage and switching signal; Described logic control circuit, the switching signal according to the collection change-over circuit of controlling voltage and switching signal is provided offers the instruction output circuit with logic control signal; Described instruction output circuit outputs to electronic switching mechanism Y with instruction, thereby will be connected to power supply U commonly used
NMains switch 1Q1 and be connected to stand-by power supply U
RMains switch 1Q2 switch to required state synchronously.
2, the automatic control equipment of double loop power supply diverter switch according to claim 1, the collection change-over circuit that it is characterized in that controlling voltage and switching signal comprises relay coil 2KA1 and 2KA2, relay normally-closed contact 2KA1-1, two two synchronous contact 2KA2-1 of normally closed tetrad and relay normally-closed contact 4K1-1, normally-closed contact 4K1-1 one end and the power supply U commonly used of often opening of relay
NConnect, the normally-closed contact 4K1-1 other end is connected with an end and the two ends of often opening the normally-closed contact a of couple synchronous contact 2KA2-1 of normally closed tetrad of relay coil 2KA1, and the other end of normally-closed contact a is controlled voltage U with exchanging
cAn output L
oConnect the other end of relay coil 2KA1 and power supply U commonly used
NThe end of another normally-closed contact a ' of neutral line N and 2KA2-1 is connected, another output N of the other end of a ' and Uc
oConnect the end of relay normally-closed contact 2KA1-1 and stand-by power supply U
RConnect, the end of the end of the other end of normally-closed contact 2KA1-1 and relay coil 2KA2 and the normally opened contact b of 2KA2-1 is connected the output L of the other end of normally opened contact b and Uc
oConnect the other end of relay coil 2KA2 and stand-by power supply U
RThe end of another normally opened contact b ' of neutral line N ' and 2KA2-1 is connected, the output N of the other end of b ' and Uc
oConnect.
3, the automatic control equipment of double loop power supply diverter switch according to claim 1, it is characterized in that hauling oneself willingly into runback and haul oneself willingly into not that the runback functional circuit comprises selector switch 4S1, current-limiting resistance 4R1, relay normally open contact 2KA2-5, triode 4V1 and relay coil 4K1, direct-current control voltage Vcc "+" end is connected with 1 end of selector switch 4S1,2 ends of 4S1 are dead end, its 3 end is connected with the end of current-limiting resistance 4R1 and the end of relay normally open contact 2KA2-5, the base stage of triode 4V1 is connected with the other end of current-limiting resistance 4R1, grounded emitter, relay coil 4K1 two ends are connected with the other end of relay normally open contact 2KA2-5 and the collector electrode of triode 4V1 respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021383588A CN1159826C (en) | 2002-09-25 | 2002-09-25 | Automatic control device for diplex power change-over switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021383588A CN1159826C (en) | 2002-09-25 | 2002-09-25 | Automatic control device for diplex power change-over switch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1402411A true CN1402411A (en) | 2003-03-12 |
| CN1159826C CN1159826C (en) | 2004-07-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021383588A Expired - Lifetime CN1159826C (en) | 2002-09-25 | 2002-09-25 | Automatic control device for diplex power change-over switch |
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| Country | Link |
|---|---|
| CN (1) | CN1159826C (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100365912C (en) * | 2006-03-16 | 2008-01-30 | 江苏金智科技股份有限公司 | Automatic input device and control method for emergency power supply of bus for middle-low voltage section factory |
| CN101478176A (en) * | 2008-01-03 | 2009-07-08 | 鸿富锦精密工业（深圳）有限公司 | Backup electric power system |
| CN101150260B (en) * | 2006-09-19 | 2011-02-09 | 宝山钢铁股份有限公司 | Power supply switch and anti-jump control method and device |
| CN101232202B (en) * | 2007-01-22 | 2012-03-28 | 鸿富锦精密工业（深圳）有限公司 | Double power supply converting switch device |
| CN101931267B (en) * | 2009-06-24 | 2013-01-23 | 北京动力源科技股份有限公司 | Control unit for realizing intelligent switching of alternating current input |
| CN107565685A (en) * | 2017-09-21 | 2018-01-09 | 泰豪科技股份有限公司 | A kind of power output control method and device |
| CN108023406A (en) * | 2017-12-25 | 2018-05-11 | 常熟开关制造有限公司(原常熟开关厂） | The rapid translating control method and automatic change-over of automatic change-over |
-
2002
- 2002-09-25 CN CNB021383588A patent/CN1159826C/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100365912C (en) * | 2006-03-16 | 2008-01-30 | 江苏金智科技股份有限公司 | Automatic input device and control method for emergency power supply of bus for middle-low voltage section factory |
| CN101150260B (en) * | 2006-09-19 | 2011-02-09 | 宝山钢铁股份有限公司 | Power supply switch and anti-jump control method and device |
| CN101232202B (en) * | 2007-01-22 | 2012-03-28 | 鸿富锦精密工业（深圳）有限公司 | Double power supply converting switch device |
| CN101478176A (en) * | 2008-01-03 | 2009-07-08 | 鸿富锦精密工业（深圳）有限公司 | Backup electric power system |
| CN101478176B (en) * | 2008-01-03 | 2012-11-21 | 鸿富锦精密工业（深圳）有限公司 | Backup electric power system |
| CN101931267B (en) * | 2009-06-24 | 2013-01-23 | 北京动力源科技股份有限公司 | Control unit for realizing intelligent switching of alternating current input |
| CN107565685A (en) * | 2017-09-21 | 2018-01-09 | 泰豪科技股份有限公司 | A kind of power output control method and device |
| CN108023406A (en) * | 2017-12-25 | 2018-05-11 | 常熟开关制造有限公司(原常熟开关厂） | The rapid translating control method and automatic change-over of automatic change-over |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1159826C (en) | 2004-07-28 |
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Granted publication date: 20040728 |