CN106451756A - Power generator set and power grid power supplying automatic switching program-controlled device with high electromagnetic interference resistance - Google Patents
Power generator set and power grid power supplying automatic switching program-controlled device with high electromagnetic interference resistance Download PDFInfo
- Publication number
- CN106451756A CN106451756A CN201610722715.7A CN201610722715A CN106451756A CN 106451756 A CN106451756 A CN 106451756A CN 201610722715 A CN201610722715 A CN 201610722715A CN 106451756 A CN106451756 A CN 106451756A
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- China
- Prior art keywords
- electrical network
- normally
- auxiliary reclay
- contactor
- power
- Prior art date
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/08—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems requiring starting of a prime-mover
Abstract
The invention relates to a power generator set and power grid power supplying automatic switching program-controlled device with advantages of high electromagnetic interference resistance, high long-term operation stability and high switching speed. The device comprises a three-phase power supply a, b, c of a power generator set F and a three-phase power supply A, B, C of a power grid power supply G. The a phase of the power supply of the power generator set is connected with a power generator set power supply air switch DK2 and is connected with one end of a normally closed contact A6 of a power grid testing intermediate relay CA. The other end of a normally closed contact A6 of the power grid testing intermediate relay CA is connected with one end of a power generator testing intermediate relay CB. The device has high reliability. A current power generator set and power grid power supplying automatic switching program-controlled device can realize 3000-5000 times of switching without faults, and the power generator set and power grid power supplying automatic switching program-controlled device with high electromagnetic interference resistance can realize more than 10000 times of switching without fault, thereby greatly improving reliability.
Description
The present invention is application number 201410742055X, December 9 2014 applying date, a kind of denomination of invention " generating set
Power automatic switchover program control device with electrical network " divisional application.
Technical field
The automatic switchover program control device the present invention relates to a kind of strong generating set of electromagnetism interference and electrical network are powered, belongs to electricity
Sub- technical field.
Background technology
In daily production and life, there are much important equipment or a department, its power supply is interrupted and is prohibited from, they
Electricity consumption is intended to make every effort to ensure to continue and fool proof reliability.
The power operation principle of automatic switchover program control device of generating set and electrical network is:When electrical network powers normal, load is by electricity
Net normal power supply, when electrical network powers abnormal or power down, realizes generating set and exports to load supplying, when power system restoration is normal
Afterwards, system is automatically restored to electrical network and powers.
Current generating set and electrical network are powered, and automatic switchover program control device electromagnetism interference performance is poor, and long-term work is stable
Property poor, easily break down, have a strong impact on produce and life normal operation；Also some generating sets and electrical network is had to power automatically
Switching program control device stable performance, breaks down few, but often complex structure, cost height, do not meet the national conditions of China；Separately
Outward, current generating set and electrical network power automatic switchover program control device conversion speed slowly, generally 1s-3s.
Content of the invention
The problem to be solved in the present invention is for not enough above, provides a kind of strong generating set of electromagnetism interference and electrical network
Power supply automatic switchover program control device, long-term working stability is high, conversion speed is fast, and structure is simple, low cost, economical, meets me
The national conditions of state.
For solving the above problems, the present invention employs the following technical solutions：The strong generating set of electromagnetism interference is supplied with electrical network
Electric automatic switchover program control device, three phase mains a, b, the c including generating set F and electrical network are powered three phase mains A, B, C of G, send out
The a phase power supply of group of motors gets access to grid after electric set electric supply air switch DK2 and tests the normally-closed contact A6 of auxiliary reclay CA
One end, electrical network test auxiliary reclay CA the other end sending and receiving electromechanical testing auxiliary reclay CB of normally-closed contact A6 one
End, the c phase power supply of the other end sending and receiving group of motors of generator test auxiliary reclay CB, generator test auxiliary reclay CB's
The other end gets access to grid power switching A.C. contactor KM1Auxiliary normally-closed contact 1KM1One end；
Described electrical network power G A phase through electrical network powered air switch DK1 get access to grid test auxiliary reclay CA one end, electrical network
The other end of test auxiliary reclay CA switchs one end of DK1 through the power supply powered air that gets access to grid, and a phase power supply of generating set divides
Other sending and receiving group of motors power switching A.C. contactor KM2Auxiliary normally-closed contact 2KM2One end and power supply one end, generating set
Power switching A.C. contactor KM2Auxiliary normally-closed contact 2KM2The other end and power supply the other end respectively sending and receiving group of motors c
Phase power supply.
Described electrical network power switching A.C. contactor KM1Auxiliary normally-closed contact 1KM1The other end connect generator time and continue
The coil of electrical equipment sj2, electrical network power switching A.C. contactor KM1Auxiliary normally-closed contact 1KM1The other end through generating set supply
TURP changes A.C. contactor KM2Coil sending and receiving motor time relay sj2 normally opened contact switch, generator time relay
The normally opened contact B2 of sj2 sending and receiving electromechanical testing auxiliary reclay.
The other end that described electrical network powered air switchs DK1 gets access to grid the C phase of power supply G, and electrical network tests auxiliary reclay CA
The other end through electrical network power switching A.C. contactor KM1The powered air that gets access to grid switchs one end of DK1, and electrical network powered air is opened
Close DK1 the other end get access to grid power supply G C phase.
One end of the normally opened contact A1 of described electrical network test auxiliary reclay CA gets access to grid respectively and tests auxiliary reclay CA
One end of normally-closed contact A5 and electrical network test auxiliary reclay CA normally-closed contact A8 one end, electrical network test auxiliary reclay
Another termination fuel feeding of the normally opened contact A1 of CA, extinguishing controller XQ, electrical network tests the normally-closed contact A5's of auxiliary reclay CA
Another termination fuel feeding, extinguishing controller XQ.
Described electrical network tests another termination power of the normally-closed contact A8 of auxiliary reclay CA, and electrical network tests auxiliary reclay
One end of the normally opened contact A3 of CA gets access to grid powered air switch DK1, and electrical network tests the normally opened contact A3 of auxiliary reclay CA
One end of the normally-closed contact B8 of other end sending and receiving electromechanical testing auxiliary reclay CB, generator test auxiliary reclay CB's is normally closed
The other end of contact B8 gets access to grid power switching A.C. contactor KM1Movement time relay sj1 coil one end, electrical network
Power switching A.C. contactor KM1Movement time relay sj1 coil the other end get access to grid test auxiliary reclay CA
The other end, electrical network power switching A.C. contactor KM1Movement time relay sj1 coil other end sending and receiving group of motors
Power switching A.C. contactor KM2Auxiliary normally-closed contact 2KM2Afterwards again through electrical network power switching A.C. contactor KM1Auxiliary normal
Closed contact 1KM1Coil get access to grid power switching A.C. contactor KM1Movement time relay sj1 normally opened contact.
Three phase mains a, b and c of described generating set F be connected to series connection electric set electric supply air switch DK2,
Electric set electric supply switches A.C. contactor KM2Supply electricity output disconnect switch DK3 with to load；Genset three-phase power supply a, b
The electric set electric supply air switch DK2 being concatenated respectively with c and electric set electric supply switching A.C. contactor KM2Afterwards, then divide
The electrical network power switching A.C. contactor KM not being concatenated1With electrical network powered air switch DK1 get access to grid power supply G three phase mains
A、B、C.
The strong generating set of electromagnetism interference of the present invention and electrical network are powered automatic switchover program control device, and it has excellent as follows
Point：
1st, switch speed is fast：Switch speed, in 0.2s, can be realized generating set and power with electrical network automatically cutting at short notice
Change, it is to avoid the generation of fault in handoff procedure, thus improve reliability；
2nd, good reliability：Current generating set and electrical network automatic switchover program control device of powering can achieve 3000-5000 time cut
Change and produce without fault, and the strong generating set of the electromagnetism interference of the present invention and electrical network power automatic switchover program control device can
The fault that handovers without realizing more than 10000 times produces, and unfailing performance greatly improves；
3rd, good economy performance：Structure is simple, low cost, compared with same kind of products at abroad low cost about 30%.
The present invention is described in detail with reference to the accompanying drawings and examples.
Brief description
Accompanying drawing 1 is that in the embodiment of the present invention, the strong generating set of electromagnetism interference and electrical network are powered automatic switchover program control device
Circuit diagram.
Specific embodiment
Embodiment, the automatic switchover program control device as shown in figure 1, a kind of strong generating set of electromagnetism interference and electrical network are powered
Including three phase mains a, b and c of generating set F, three phase mains a, b and c of generating set F are connected to the electromotor of series connection
Group powered air switch DK2, electric set electric supply switching A.C. contactor KM2Supply electricity output disconnect switch DK3 with to load；Send out
The electric set electric supply air switch DK2 that group of motors three phase mains a, b are concatenated respectively with c exchanges with electric set electric supply switching
Catalyst KM2Afterwards, more respectively the electrical network power switching A.C. contactor KM being concatenated1Get access to grid with electrical network powered air switch DK1
Three phase mains A, B, C of power supply G；
The a phase power supply of generating set sending and receiving group of motors power switching A.C. contactor KM respectively2Auxiliary normally-closed contact 2KM2's
One end and one end of power supply, electric set electric supply switches A.C. contactor KM2Auxiliary normally-closed contact 2KM2The other end and power supply
The other end respectively sending and receiving group of motors c phase power supply；
The a phase power supply of generating set gets access to grid after electric set electric supply air switch DK2 and tests the normally closed of auxiliary reclay CA
One end of contact A 6, electrical network tests the other end sending and receiving electromechanical testing auxiliary reclay CB of the normally-closed contact A6 of auxiliary reclay CA
One end, the c phase power supply of the other end sending and receiving group of motors of generator test auxiliary reclay CB, generator test auxiliary reclay
The other end of CB gets access to grid power switching A.C. contactor KM1Auxiliary normally-closed contact 1KM1One end, electrical network power switching exchange
Catalyst KM1Auxiliary normally-closed contact 1KM1Other end sending and receiving motor time relay sj2 coil, electrical network power switching hand over
Stream catalyst KM1Auxiliary normally-closed contact 1KM1The other end through electric set electric supply switch A.C. contactor KM2Coil sending and receiving
The normally opened contact switch of motor time relay sj2, generator time relay sj2 sending and receiving electromechanical testing auxiliary reclay normal
Open contact B2；
Electrical network power G A phase through electrical network powered air switch DK1 get access to grid test auxiliary reclay CA one end, electrical network test
The other end of auxiliary reclay CA through power supply get access to grid powered air switch DK1 one end, electrical network powered air switch DK1 another
One end get access to grid power supply G C phase, electrical network test auxiliary reclay CA the other end through electrical network power switching A.C. contactor KM1
The powered air that gets access to grid switch DK1 one end, electrical network powered air switch DK1 the other end get access to grid power supply G C phase；
One end of the normally opened contact A1 of electrical network test auxiliary reclay CA gets access to grid respectively and tests the normally closed tactile of auxiliary reclay CA
One end of the normally-closed contact A8 of one end of point A5 and electrical network test auxiliary reclay CA, electrical network tests the normally opened of auxiliary reclay CA
Another termination fuel feeding of contact A 1, extinguishing controller, another termination that electrical network tests the normally-closed contact A5 of auxiliary reclay CA supplies
Oil, extinguishing controller, electrical network tests another termination power of the normally-closed contact A8 of auxiliary reclay CA, relay in the middle of electrical network test
One end of the normally opened contact A3 of device CA get access to grid powered air switch DK1, electrical network test auxiliary reclay CA normally opened contact A3
The normally-closed contact B8 of other end sending and receiving electromechanical testing auxiliary reclay CB one end, generator test auxiliary reclay CB's is normal
The other end of closed contact B8 gets access to grid power switching A.C. contactor KM1Movement time relay sj1 coil one end, electricity
Net power switching A.C. contactor KM1Movement time relay sj1 the other end of coil get access to grid test auxiliary reclay
The other end of CA, electrical network power switching A.C. contactor KM1Movement time relay sj1 coil other end sending and receiving motor
Group power switching A.C. contactor KM2Auxiliary normally-closed contact 2KM2Afterwards again through electrical network power switching A.C. contactor KM1Auxiliary
Normally-closed contact 1KM1Coil get access to grid power switching A.C. contactor KM1Movement time relay sj1 normally opened contact.
In the state of electrical network is powered, once having a power failure, electrical network tests auxiliary reclay CA coil losing electricity, CA normally opened contact A3
Disconnect, power-on time controller sj1 dead electricity, normally opened contact disconnects, electrical network KM1Coil losing electricity, main contact disconnects, and auxiliary is normally closed to be touched
Point closure, generating set unidirectional current D+24V is by KM simultaneously1And KM2Auxiliary normally-closed contact, electrical network test auxiliary reclay CA
Normally-closed contact（A5、A8）, the electric current entrance fuel feeding of A5 contact, the D1 point of extinguishing controller XQ, flame-out pull bar is delivered to fuel feeding and opens
Dynamic state, through A8 normally-closed contact entrance starting ignition system, starter-generator group sends abc three-phase electricity to D+24V, such as attached simultaneously
Shown in Fig. 1, a phase passes through the normally-closed contact A6 of CA auxiliary reclay, enters the coil of generator test relay CB, makes electromotor
Group busy relay CB adhesive, normally opened contact B2 closes, powers to generating set time relay sj2, leave enough safety
After electric power feeding time, KM2Coil ON Action, main contact closes, and completes to switch, enters generator powered state.
Under generator powered state, once sending a telegram here, electrical network test auxiliary reclay CA coil obtains electric adhesive to electrical network, and CA is normal
Closed contact A6 disconnects, CB coil losing electricity, generating set time relay sj2 coil losing electricity, KM2Coil losing electricity, KM2Main contact breaks
Open, stop electric set electric supply, electrical network electrical power contact device KM1With electric set electric supply catalyst KM2Safety locking, simultaneously returns to
After halted state, then by electrical network power-on time relay sj1 to KM1Coil power transmission, KM1Main contact closes, and completes to switch, enters
Enter electrical network power supply state.
Switch speed of the present invention, in 0.2s, can be realized generating set and electrical network at short notice and power automatic switchover,
Avoid the generation of fault in handoff procedure, thus improve reliability；The strong generating set of the electromagnetism interference of the present invention with
Electrical network automatic switchover program control device of powering can achieve that the fault that handovers without of more than 10000 times produces, and current electromotor
Group with electrical network power automatic switchover program control device only can achieve 3000-5000 time handover without fault generation, unfailing performance
Greatly improve；Present configuration is simple, low cost, compared with same kind of products at abroad low cost about 30%.
The above is the citing of best mode for carrying out the invention, and it is common that the part wherein do not addressed in detail is this area
The common knowledge of technical staff.Protection scope of the present invention is defined by the content of claim, any technology based on the present invention
The equivalent transformation enlightening and carrying out, also within protection scope of the present invention.
Claims (6)
1. the strong generating set of electromagnetism interference and electrical network are powered automatic switchover program control device, including the three-phase electricity of generating set F
Source a, b, c and electrical network power G three phase mains A, B, C it is characterised in that：The a phase power supply of generating set is through electric set electric supply
Get access to grid after air switch DK2 test auxiliary reclay CA normally-closed contact A6 one end, electrical network tests auxiliary reclay CA
One end of the other end sending and receiving electromechanical testing auxiliary reclay CB of normally-closed contact A6, generator test auxiliary reclay CB's is another
The c phase power supply of termination generating set, the other end of generator test auxiliary reclay CB gets access to grid power switching A.C. contactor
KM1Auxiliary normally-closed contact 1KM1One end；
Described electrical network power G A phase through electrical network powered air switch DK1 get access to grid test auxiliary reclay CA one end, electrical network
The other end of test auxiliary reclay CA switchs one end of DK1 through the power supply powered air that gets access to grid, and a phase power supply of generating set divides
Other sending and receiving group of motors power switching A.C. contactor KM2Auxiliary normally-closed contact 2KM2One end and power supply one end, generating set
Power switching A.C. contactor KM2Auxiliary normally-closed contact 2KM2The other end and power supply the other end respectively sending and receiving group of motors c
Phase power supply.
2. the strong generating set of electromagnetism interference as claimed in claim 1 and electrical network are powered automatic switchover program control device, and it is special
Levy and be：Described electrical network power switching A.C. contactor KM1Auxiliary normally-closed contact 1KM1Other end sending and receiving motor time relay
The coil of device sj2, electrical network power switching A.C. contactor KM1Auxiliary normally-closed contact 1KM1The other end through electric set electric supply
Switching A.C. contactor KM2Coil sending and receiving motor time relay sj2 normally opened contact switch, generator time relay
The normally opened contact B2 of sj2 sending and receiving electromechanical testing auxiliary reclay.
3. the strong generating set of electromagnetism interference as claimed in claim 1 and electrical network are powered automatic switchover program control device, and it is special
Levy and be：The other end that described electrical network powered air switchs DK1 gets access to grid the C phase of power supply G, and electrical network tests auxiliary reclay CA's
The other end is through electrical network power switching A.C. contactor KM1The powered air that gets access to grid switchs one end of DK1, and electrical network powered air switchs
The other end of DK1 get access to grid power supply G C phase.
4. the strong generating set of electromagnetism interference as claimed in claim 1 and electrical network are powered automatic switchover program control device, and it is special
Levy and be：One end that described electrical network tests the normally opened contact A1 of auxiliary reclay CA gets access to grid test auxiliary reclay CA's respectively
One end of the normally-closed contact A8 of one end of normally-closed contact A5 and electrical network test auxiliary reclay CA, electrical network tests auxiliary reclay CA
Another termination fuel feeding of normally opened contact A1, extinguishing controller XQ, electrical network test auxiliary reclay CA normally-closed contact A5 another
One termination fuel feeding, extinguishing controller XQ.
5. the strong generating set of electromagnetism interference as claimed in claim 1 and electrical network are powered automatic switchover program control device, and it is special
Levy and be：Described electrical network tests another termination power of the normally-closed contact A8 of auxiliary reclay CA, and electrical network tests auxiliary reclay
One end of the normally opened contact A3 of CA gets access to grid powered air switch DK1, and electrical network tests the normally opened contact A3 of auxiliary reclay CA
One end of the normally-closed contact B8 of other end sending and receiving electromechanical testing auxiliary reclay CB, generator test auxiliary reclay CB's is normally closed
The other end of contact B8 gets access to grid power switching A.C. contactor KM1Movement time relay sj1 coil one end, electrical network
Power switching A.C. contactor KM1Movement time relay sj1 coil the other end get access to grid test auxiliary reclay CA
The other end, electrical network power switching A.C. contactor KM1Movement time relay sj1 coil other end sending and receiving group of motors
Power switching A.C. contactor KM2Auxiliary normally-closed contact 2KM2Afterwards again through electrical network power switching A.C. contactor KM1Auxiliary normal
Closed contact 1KM1Coil get access to grid power switching A.C. contactor KM1Movement time relay sj1 normally opened contact.
6. the strong generating set of electromagnetism interference as claimed in claim 1 and electrical network are powered automatic switchover program control device, and it is special
Levy and be：Three phase mains a, b and c of described generating set F be connected to series connection electric set electric supply air switch DK2,
Electric set electric supply switches A.C. contactor KM2Supply electricity output disconnect switch DK3 with to load；Genset three-phase power supply a, b
The electric set electric supply air switch DK2 being concatenated respectively with c and electric set electric supply switching A.C. contactor KM2Afterwards, then divide
The electrical network power switching A.C. contactor KM not being concatenated1With electrical network powered air switch DK1 get access to grid power supply G three phase mains
A、B、C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610722715.7A CN106451756B (en) | 2014-12-09 | 2014-12-09 | Program control device is automatically switched in the strong generating set of electromagnetism interference and power grid power supply |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610722715.7A CN106451756B (en) | 2014-12-09 | 2014-12-09 | Program control device is automatically switched in the strong generating set of electromagnetism interference and power grid power supply |
| CN201410742055.XA CN104518566B (en) | 2014-12-09 | 2014-12-09 | A kind of generating set and electrical network are powered automatic switchover program control device |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410742055.XA Division CN104518566B (en) | 2014-12-09 | 2014-12-09 | A kind of generating set and electrical network are powered automatic switchover program control device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106451756A true CN106451756A (en) | 2017-02-22 |
| CN106451756B CN106451756B (en) | 2018-12-04 |
Family
ID=52793462
Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610722715.7A Expired - Fee Related CN106451756B (en) | 2014-12-09 | 2014-12-09 | Program control device is automatically switched in the strong generating set of electromagnetism interference and power grid power supply |
| CN201410742055.XA Expired - Fee Related CN104518566B (en) | 2014-12-09 | 2014-12-09 | A kind of generating set and electrical network are powered automatic switchover program control device |
| CN201610722757.0A Expired - Fee Related CN106451757B (en) | 2014-12-09 | 2014-12-09 | Program control device is automatically switched in a kind of generating set that conversion speed is fast and power grid power supply |
Family Applications After (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410742055.XA Expired - Fee Related CN104518566B (en) | 2014-12-09 | 2014-12-09 | A kind of generating set and electrical network are powered automatic switchover program control device |
| CN201610722757.0A Expired - Fee Related CN106451757B (en) | 2014-12-09 | 2014-12-09 | Program control device is automatically switched in a kind of generating set that conversion speed is fast and power grid power supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (3) | CN106451756B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104993581A (en) * | 2015-08-06 | 2015-10-21 | 国家电网公司 | Low-voltage power supply backup automatic switching device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010142102A (en) * | 2008-11-11 | 2010-06-24 | Akamatsu Denki:Kk | Device for switching power supply |
| CN101951020A (en) * | 2010-10-25 | 2011-01-19 | 苏州高新区禾云设备设计事务所 | Spare power supply switching device for generator |
| CN201985619U (en) * | 2011-03-31 | 2011-09-21 | 长城汽车股份有限公司 | Uninterrupted power source for spraying robot |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6849967B2 (en) * | 2002-04-19 | 2005-02-01 | Eaton Corporation | Automatic transfer switch for microturbine and method of operation |
| CN201656547U (en) * | 2010-02-04 | 2010-11-24 | 河南省电力公司新乡供电公司 | Automatic power supply switching device |
| CN103762716B (en) * | 2014-01-24 | 2016-06-15 | 中山市明阳电器有限公司 | A kind of electric power system hauling oneself willingly into runback |
-
2014
- 2014-12-09 CN CN201610722715.7A patent/CN106451756B/en not_active Expired - Fee Related
- 2014-12-09 CN CN201410742055.XA patent/CN104518566B/en not_active Expired - Fee Related
- 2014-12-09 CN CN201610722757.0A patent/CN106451757B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010142102A (en) * | 2008-11-11 | 2010-06-24 | Akamatsu Denki:Kk | Device for switching power supply |
| CN101951020A (en) * | 2010-10-25 | 2011-01-19 | 苏州高新区禾云设备设计事务所 | Spare power supply switching device for generator |
| CN201985619U (en) * | 2011-03-31 | 2011-09-21 | 长城汽车股份有限公司 | Uninterrupted power source for spraying robot |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106451757B (en) | 2018-11-20 |
| CN104518566A (en) | 2015-04-15 |
| CN106451756B (en) | 2018-12-04 |
| CN104518566B (en) | 2016-08-31 |
| CN106451757A (en) | 2017-02-22 |
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