CN205666679U - UPS of bypass automatic switch -over type - Google Patents
UPS of bypass automatic switch -over type Download PDFInfo
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- CN205666679U CN205666679U CN201620535445.4U CN201620535445U CN205666679U CN 205666679 U CN205666679 U CN 205666679U CN 201620535445 U CN201620535445 U CN 201620535445U CN 205666679 U CN205666679 U CN 205666679U
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Abstract
The utility model discloses a UPS of bypass automatic switch -over type, include: main power source, bypass power, auto -change over device, first relay and second relay, it is right that auto -change over device is used for according to the electric energy quality of main power source the operating condition of first relay and second relay controls, makes when the electric energy quality of main power source was not conform to system requirements, with the disconnection of first relay, second relay intercommunication, UPS was by bypass mains operated, when the electric energy quality of main power source accorded with system requirements again, with the disconnection of second relay, first relay intercommunication, UPS was by main mains operated. The utility model provides a UPS does not need complicated control circuit, only can automated inspection owner power supply abnormal through simple auto -change over device and accomplish the bypass and switch, has strengthened the reliability of system.
Description
Technical field
This utility model belongs to field of power supplies, more particularly, to a kind of UPS bypassing automatic switchover type.
Background technology
Uninterrupted power source (UPS), as the equipment of guarantee important load power supply reliability, mainly comprises rectification circuit, inversion
Circuit, charging circuit, accumulator and five parts of bypass power supply.When electrical network is properly functioning, civil power is inputted electric energy warp by UPS
Over commutation, inversion provide high-quality electric energy for load, are charged accumulator by charging circuit simultaneously；Work as grid collapses
Time, the electric energy stored in accumulator is just provided continual power supply by inverter circuit for load by UPS.And when inverter occurs
When fault or its output quality of power supply are unsatisfactory for requiring, UPS should be able to automatically switch to bypass supply, by civil power directly to negative
Carry power supply, improve the reliability that UPS powers.
It is in existing UPS bypass changeover device, general by UPS main circuit control system detection inverter output voltage,
And provide switching command.As patent documentation CN 201234162Y discloses a kind of Intelligent auxiliary electric power fast switching apparatus, by
The main power source of inversion output, main power source testing circuit, bypass supply, bypass supply testing circuit, main switching circuit, isolation drive
Circuit, DSP intelligent control circuit, load current detection circuit and RS485 communication interface composition.Owing to the method needs complexity
Control circuit, the most easily breaks down, and reliability is relatively low.
Utility model content
For the defect of prior art, the purpose of this utility model is to simplify UPS of the prior art, thus reduces into
This, improve the reliability of device.
For achieving the above object, this utility model provides a kind of UPS bypassing automatic switchover type, including: main power source, side
Road power supply, switching device, the first relay and the second relay；
First outfan of described main power source connects the control end of described first relay, and the second outfan of main power source is even
Connecing the input of described switching device, the first outfan of described bypass supply connects the control end of described second relay；
First control end of described switching device connects the first input end of described first relay, described switching device
Second controls end connects the first input end of described second relay；The outfan of described first relay is as described UPS's
First outfan, the outfan of described second relay is as second outfan of described UPS；Described first relay and
Two relays are dynamic circuit connector type relay or moving fault relay；
Described switching device for according to the quality of power supply of main power source to described first relay and the second relay
Duty is controlled so that when the quality of power supply of described main power source does not meets system requirements, is disconnected by the first relay, the
Two relay connections, UPS is powered by bypass supply；When the quality of power supply of main power source meets system requirements again, continue second
Electrical equipment disconnects, and the first relay connection, UPS is powered by main power source.
Preferably, described switching device includes electronic measuring device and supervisory relay, the input of described electronic measuring device
Holding the input as described switching device, the outfan of described electronic measuring device connects the first input of described supervisory relay
End, the first control end of described supervisory relay is as the first control end of described switching device, the of described supervisory relay
Two control the end the second control end as described switching device；Described electronic measuring device is for sending out according to the quality of power supply of main power source
Going out control signal, duty and time delay to supervisory relay are controlled, thus indirectly control the first relay with
And second duty of relay.
As it is further preferred that described first relay is moving fault relay, described second relay is dynamic circuit connector type
Relay, described switching device is moving fault relay.
As it is further preferred that described first relay is dynamic circuit connector type relay, described second relay is moving fault
Relay, described supervisory relay is dynamic circuit connector type relay.
As it is further preferred that described first relay and the second relay are dynamic circuit connector type relay, described supervision
Relay is conversion type relay, and its movable contact is as the first control end of described supervisory relay, and stationary contact is as described prison
The second control end depending on relay.
As it is further preferred that described first relay and the second relay are moving fault relay, described supervision
Relay is conversion type relay, and its stationary contact is as the first control end of described supervisory relay, and movable contact is as described prison
The second control end depending on relay.
As it is further preferred that described supervisory relay includes overrun control, the first permutator and second
Permutator, the input of described overrun control fills as the input of described overrun control, described delays time to control
The first outfan put connects the first input end of the first permutator, and the second outfan of described overrun control connects the
The first input end of two permutatoies；
Second input of described first permutator connects the first phase of described bypass supply, described first permutator
Control the end the first control end as described supervisory relay, the first end of the coil of described first relay is as described the
The first input end of one relay, the second end of the coil of described first relay connects the second phase of described bypass supply；
Second input of described second permutator connects the first phase of described main power source, described second permutator
Controlling the end the second control end as described supervisory relay, the first end of the coil of described second relay is as described second
The first input end of relay, the second end of the coil of described second relay connects the second phase of described main power source；
Described first relay and the second relay are moving fault relay；
Described overrun control is for sending according to control signal prolong the first permutator and the second permutator
Time control signal so that one of them connection of the first permutator and the second permutator, a disconnection；
When the quality of power supply of main power source meets the requirements, the first permutator connection, the second permutator disconnects, and now the
The coil of one relay is in "on" position, and the coil of the second relay is in off-position；And due to the first relay and
Second relay is moving fault relay simultaneously, then the control end connection of the first relay, and the control end of the second relay disconnects；
The outfan of UPS switches to by the outfan of the first relay, is i.e. powered by main power source；
When the quality of power supply of main power source is undesirable, the second permutator connection, the first permutator disconnects, now
The coil of the second relay is in "on" position, and the coil of the first relay is in off-position；And due to the first relay with
And second relay be moving fault relay simultaneously, then the second relay control end connection, the control end of the first relay break
Open；The outfan of UPS switches to by the outfan of the second relay, is i.e. powered by bypass supply；
And the quality of power supply of main power source can persistently be monitored by electronic measuring device, control signal can not only be sent, moreover it is possible to
Delay to control signal carries out certain setting according to demand.
As it is further preferred that described supervisory relay includes overrun control, the first permutator and second
Permutator, the input of described overrun control fills as the input of described overrun control, described delays time to control
The first outfan put connects the first input end of the first permutator, and the second outfan of described overrun control connects the
The first input end of two permutatoies；
Second input of described first permutator connects the first phase of described main power source, described first permutator
Controlling the end the first control end as described supervisory relay, the first end of the coil of described first relay is as described first
The first input end of relay, the second end of the coil of described first relay connects the second phase of described main power source；
Second input of described second permutator connects the first phase of described bypass supply, described second permutator
Control the end the second control end as described supervisory relay, the first end of the coil of described second relay is as described the
The first input end of two relays, the second end of the coil of described second relay connects the second phase of described bypass supply；
Described first relay and the second relay are dynamic circuit connector type relay；
Described overrun control is for sending according to control signal prolong the first permutator and the second permutator
Time control signal so that one of them connection of the first permutator and the second permutator, a disconnection；
When the quality of power supply of main power source meets the requirements, the first permutator connection, the second permutator disconnects, and now the
The coil of one relay is in "on" position, and the coil of the second relay is in off-position；And due to the first relay and
Second relay is dynamic circuit connector type relay simultaneously, then the control end connection of the first relay, and the control end of the second relay disconnects；
The outfan of UPS switches to by the outfan of the first relay, is i.e. powered by main power source；
When the quality of power supply of main power source is undesirable, the second permutator connection, the first permutator disconnects, now
The coil of the second relay is in "on" position, and the coil of the first relay is in off-position；And due to the first relay with
And second relay be dynamic circuit connector type relay simultaneously, then the second relay control end connection, the control end of the first relay break
Open；The outfan of UPS switches to by the outfan of the second relay, is i.e. powered by bypass supply；
And the quality of power supply of main power source can persistently be monitored by electronic measuring device, control signal can not only be sent, moreover it is possible to
Delay to control signal carries out certain setting according to demand.
Preferably, the coil of described first relay is parallel with the first display device, the coil of described second relay
On be parallel with the second display device.
Preferably, during the described quality of power supply includes voltage magnitude, tri-phase unbalance factor, voltage phase sequence or phase shortage situation
Plant or multiple.
By the above technical scheme that this utility model is contemplated, compared with prior art, it is possible to obtain following useful effect
Really:
1, the power supply state of UPS is switched over, directly by this utility model by the first relay and the second relay
Powered to switching device by main power source or bypass supply, it is to avoid the impact that UPS is produced by the power supply of switching device, not only increase
The strong reliability of system, also reduces production cost；
2, electronic measuring device is while controlling supervisory relay, also can persistently supervise the duty of main power source
Control so that device work is relatively reliable；
3, by main power source to the coil power supply of the first relay, supplied to the coil of the second relay by bypass supply
Electricity, it is achieved that the non-stop run of switching device, further enhancing the reliability of system；
4, the work time delay of switching device also can be controlled by electronic measuring device, it is achieved the regulation of bypass changeover time,
To meet the demand of different application occasion；
5, utilize the first display device and the second display device that the duty of switching device is monitored so that
The power supply state of UPS is more directly perceived, uses convenient.
Accompanying drawing explanation
Fig. 1 is the circuit theory diagrams of this utility model embodiment 1；
Fig. 2 is this utility model embodiment 1 inverter output main power source and bypass supply handoff procedure repeat circuit action
Signal graph.
Detailed description of the invention
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with accompanying drawing and enforcement
Example, is further elaborated to this utility model.Should be appreciated that specific embodiment described herein is only in order to explain
This utility model, is not used to limit this utility model.
This utility model provides a kind of UPS bypassing automatic switchover type, including: main power source, bypass supply, the first relay
The parts such as device, the second relay, electronic measuring device, supervisory relay, the first display device, the second display device；
Wherein, described main power source and bypass supply are three phase mains, and the first outfan of described main power source connects described
The control end of the first relay, the second outfan of main power source connects the input of described electronic measuring device, described bypass supply
First outfan connect described second relay control end；
The outfan of described electronic measuring device connects the first input end of described supervisory relay, described supervisory relay
First controls end connects the first input end of described first relay, and the second control end of described supervisory relay connects described the
The first input end of two relays；
The outfan of described first relay is as first outfan of described UPS, the outfan of described second relay
The second outfan as described UPS；Described first relay and the second relay are dynamic circuit connector type relay or moving fault continues
Electrical equipment；It is parallel with the display devices such as display lamp on the coil of the first relay and the second relay, can be to the work shape of relay
State is monitored.
Wherein, main power source for the main power supply source as described UPS, auxiliary for as described UPS of bypass supply
Helping power supply source, electronic measuring device is for monitoring the quality of power supply of main power source, including voltage magnitude, tri-phase unbalance factor, voltage
The parameters such as phase sequence or phase shortage situation；Meanwhile, electronic measuring device, according to the quality of power supply of main power source, sends control to supervisory relay
Signal, controls the first relay and the connection of the second relay and disconnection by supervisory relay；Make described main power source
When the quality of power supply does not meets system requirements, being disconnected by the first relay, the second relay connection, UPS is powered by bypass supply；?
When the quality of power supply of main power source meets system requirements again, being disconnected by the second relay, the first relay connection, UPS is by main electricity
Source powers.
Wherein, the type of the second relay and the first relay is necessary for dynamic circuit connector type relay or moving fault relay,
The type of supervisory relay is then correlated with the type of the second relay and the first relay；Such as, when the second relay with
And first the type of relay identical time, supervisory relay is conversion type relay, and its stationary contact and movable contact are respectively as stating
First control end of supervisory relay and second controls end；And when the type difference of the second relay and the first relay,
Supervisory relay is dynamic circuit connector type relay or moving fault relay；
When the first relay and the second relay are moving fault relay, the stationary contact conduct of described supervisory relay
First control end of described supervisory relay, movable contact controls end as the second of described supervisory relay, the first relay
Coil is powered by bypass supply, and the coil of the second relay is powered by main power source, specifically:
Described supervisory relay includes overrun control, the first permutator and the second permutator, described time delay
Controlling the input input as described overrun control of device, the first outfan of described overrun control connects
The first input end of the first permutator, it is first defeated that the second outfan of described overrun control connects the second permutator
Enter end；
Second input of described first permutator connects the first phase of described bypass supply, described first permutator
Control the end the first control end as described supervisory relay, the first end of the coil of described first relay is as described the
The first input end of one relay, the second end of the coil of described first relay connects the second phase of described bypass supply；
Second input of described second permutator connects the first phase of described main power source, described second permutator
Controlling the end the second control end as described supervisory relay, the first end of the coil of described second relay is as described second
The first input end of relay, the second end of the coil of described second relay connects the second phase of described main power source；
When the quality of power supply of main power source meets the requirements, the first permutator connection, the second permutator disconnects, and now the
The coil of one relay is in "on" position, and the coil of the second relay is in off-position；And due to the first relay and
Second relay is moving fault relay simultaneously, then the control end connection of the first relay, and the control end of the second relay disconnects；
The outfan of UPS switches to by the outfan of the first relay, is i.e. powered by main power source；
When the quality of power supply of main power source is undesirable, the second permutator connection, the first permutator disconnects, now
The coil of the second relay is in "on" position, and the coil of the first relay is in off-position；And due to the first relay with
And second relay be moving fault relay simultaneously, then the second relay control end connection, the control end of the first relay break
Open；The outfan of UPS switches to by the outfan of the second relay, is i.e. powered by bypass supply；
And the quality of power supply of main power source can persistently be monitored by electronic measuring device, control signal can not only be sent, moreover it is possible to
Delay to control signal carries out certain setting according to demand.
And when the first relay and the second relay are dynamic circuit connector type relay, the stationary contact of described supervisory relay is made
For the first control end of described supervisory relay, movable contact is as the second control end of described supervisory relay, the first relay
Coil powered by main power source, the coil of the second relay is powered by bypass supply, so, the output of UPS at main power source and
When switching between bypass supply, then achieve uninterrupted control, make device relatively reliable, specifically:
Described supervisory relay includes overrun control, the first permutator and the second permutator, described time delay
Controlling the input input as described overrun control of device, the first outfan of described overrun control connects
The first input end of the first permutator, it is first defeated that the second outfan of described overrun control connects the second permutator
Enter end；
Second input of described first permutator connects the first phase of described main power source, described first permutator
Controlling the end the first control end as described supervisory relay, the first end of the coil of described first relay is as described first
The first input end of relay, the second end of the coil of described first relay connects the second phase of described main power source；
Second input of described second permutator connects the first phase of described bypass supply, described second permutator
Control the end the second control end as described supervisory relay, the first end of the coil of described second relay is as described the
The first input end of two relays, the second end of the coil of described second relay connects the second phase of described bypass supply；
Described first relay and the second relay are dynamic circuit connector type relay；
Described overrun control is for sending according to control signal prolong the first permutator and the second permutator
Time control signal so that one of them connection of the first permutator and the second permutator, a disconnection；
When the quality of power supply of main power source meets the requirements, the first permutator connection, the second permutator disconnects, and now the
The coil of one relay is in "on" position, and the coil of the second relay is in off-position；And due to the first relay and
Second relay is dynamic circuit connector type relay simultaneously, then the control end connection of the first relay, and the control end of the second relay disconnects；
The outfan of UPS switches to by the outfan of the first relay, is i.e. powered by main power source；
When the quality of power supply of main power source is undesirable, the second permutator connection, the first permutator disconnects, now
The coil of the second relay is in "on" position, and the coil of the first relay is in off-position；And due to the first relay with
And second relay be dynamic circuit connector type relay simultaneously, then the second relay control end connection, the control end of the first relay break
Open；The outfan of UPS switches to by the outfan of the second relay, is i.e. powered by bypass supply；
And the quality of power supply of main power source can persistently be monitored by electronic measuring device, control signal can not only be sent, moreover it is possible to
Delay to control signal carries out certain setting according to demand.
Embodiment 1
As it is shown in figure 1, the UPS bypass automatic switching control equipment of the present embodiment is by main power source U1, bypass supply U2, switching device
CM, the first relay J C1, the second relay J C2 and the first display lamp LED1, the second display lamp LED2 composition.
First outfan of described main power source U1 connects the control end of described first relay J C1, the second of main power source JC1
Outfan connects the input of described switching device, and first outfan of described bypass supply U2 connects described second relay
The control end of JC2；
Wherein, described switching device CM comprises electronic measuring device and supervisory relay, the input of described electronic measuring device
Holding the input as switching device CM, the outfan of described electronic measuring device connects the first input of described supervisory relay
End, the input of described electronic measuring device connects first outfan of described main power source U1, and described supervisory relay is conversion type
Relay, the concrete relay selecting ABB AB's model to be CM-MPS 1SVR630884R3300, this relay in the present embodiment
Including 2 one pole switching relaies, it is called described second permutator CM/NC and the first permutator CM/NO；
First phase of the second input described main power source U1 of connection of described first permutator CM/NO, described first turn
The outfan changing switch CM/NO connects first end of coil of the first relay, and the second of described main power source U1 is connected first
Second end of the coil of relay；Otherwise, second input of described second permutator CM/NC connects described bypass supply U2
The first phase, the outfan of described second permutator CM/NC connects the first end of the coil of the second relay, described bypass electricity
The second of source U2 is connected second end of coil of the second relay；
The coil of the first relay J C1 and the first display lamp LED1 are in parallel, the coil of the second relay J C2 and the second instruction
Lamp LED2 is in parallel.
In this example, output voltage fluctuation range requires that loadtype is electric machinery, therefore overpressure value for-5%～+5%
For the rated voltage of+5%, under-voltage value is the rated voltage of-5%, simultaneously for preventing supervisory relay the most electric at main power source U1
Pressure misoperation when falling, sets the reset delay tr of supervisory relay as 0.1s.The operation principle of the present embodiment is as follows:
1, when electronic measuring device monitor main power source three-phase voltage exist voltage magnitude exceeded under-voltage threshold range, three
Phase voltage degree of unbalancedness exceedes the one in uneven threshold value, three-phase voltage phase sequence mistake, the above phenomenon of phase of three-phase voltage mutually
Or time multiple, sending control signal to supervisory relay, supervisory relay resets after reset delay tr so that the first conversion
Switch CM/NO disconnects, the second permutator CM/NC connection；
2, now, the coil of the second relay J C2 is connected, and the second display lamp LED2 is bright, and the coil of the first relay J C1 breaks
Opening, the first display lamp LED1 goes out；Owing to the first relay J C1 and the second relay J C2 are all dynamic circuit connector type relay, and first continues
The control end of electrical equipment JC1 is used for controlling main power source U1, and the control end of the second relay J C2 is used for controlling bypass supply U2, then this
Time UPS switch to and powered by bypass supply U2；
3, same, when the service restoration that electronic measuring device monitors main power source U1 is normal, supervisory relay is through response
Action after time delay ts, first makes the second permutator CM/NC disconnect, the first permutator CM/NO connection, now, and the first relay
The coil of device JC1 is connected, and the first display lamp LED1 is bright；The coil of the second relay J C2 disconnects, and the second display lamp LED2 goes out；Again
After switching delay td, the control end JC1/NO of the first relay J C1 connects, the control end JC2/NO of the second relay J C2
Disconnecting, UPS is powered by main power source completely, as shown in Figure 2.
In the present embodiment, tr=0.5s, ts=0s, td=0s.Needing to realize the occasion of low voltage crossing, Ke Yitong
Cross and reset delay tr is set, and corresponding delay is set to 0.1s, circumvent the Voltage Drop in the set time.
As it will be easily appreciated by one skilled in the art that and the foregoing is only preferred embodiment of the present utility model, not
In order to limit this utility model, all any amendment, equivalents made within spirit of the present utility model and principle and changing
Enter, within should be included in protection domain of the present utility model.
Claims (9)
1. the UPS bypassing automatic switchover type, it is characterised in that including: main power source, bypass supply, switching device, first continue
Electrical equipment and the second relay；
First outfan of described main power source connects the control end of described first relay, and the second outfan of main power source connects institute
Stating the input of switching device, the first outfan of described bypass supply connects the control end of described second relay；
First control end of described switching device connects the first input end of described first relay, the second of described switching device
Control end and connect the first input end of described second relay；The outfan of described first relay is as the first of described UPS
Outfan, the outfan of described second relay is as second outfan of described UPS；Described first relay and second continues
Electrical equipment is dynamic circuit connector type relay or moving fault relay.
2. UPS as claimed in claim 1, it is characterised in that described switching device includes electronic measuring device and monitors relay
Device, the input of described electronic measuring device connects as the input of described switching device, the outfan of described electronic measuring device
The first input end of described supervisory relay, the first control end of described supervisory relay is as the first control of described switching device
End processed, the second control end of described supervisory relay is as the second control end of described switching device.
3. UPS as claimed in claim 2, it is characterised in that described first relay is dynamic circuit connector type relay, and described second continues
Electrical equipment is moving fault relay, and described supervisory relay is dynamic circuit connector type relay.
4. UPS as claimed in claim 2, it is characterised in that described first relay is moving fault relay, and described second continues
Electrical equipment is dynamic circuit connector type relay, and described supervisory relay is moving fault relay.
5. UPS as claimed in claim 2, it is characterised in that described first relay and the second relay are that dynamic circuit connector type continues
Electrical equipment, described supervisory relay is conversion type relay, and its movable contact is as the first control end of described supervisory relay, stationary contact
Point is as the second control end of described supervisory relay.
6. UPS as claimed in claim 2, it is characterised in that described first relay and the second relay are that moving fault continues
Electrical equipment, described supervisory relay is conversion type relay, and its stationary contact is as the first control end of described supervisory relay, dynamic tactile
Point is as the second control end of described supervisory relay.
7. UPS as claimed in claim 2, it is characterised in that described supervisory relay includes overrun control, the first conversion
Switch and the second permutator, the input of described overrun control is as the input of described overrun control, institute
The first outfan stating overrun control connects the first input end of the first permutator, the second of described overrun control
Outfan connects the first input end of the second permutator；
Second input of described first permutator connects the first phase of described bypass supply, the control of described first permutator
End processed is as the first control end of described supervisory relay, and the first end of the coil of described first relay continues as described first
The first input end of electrical equipment, the second end of the coil of described first relay connects the second phase of described bypass supply；
Second input of described second permutator connects the first phase of described main power source, the control of described second permutator
Holding the second control end as described supervisory relay, the first end of the coil of described second relay is as described second relay
The first input end of device, the second end of the coil of described second relay connects the second phase of described main power source；
Described first relay and the second relay are moving fault relay.
8. UPS as claimed in claim 2, it is characterised in that described supervisory relay includes overrun control, the first conversion
Switch and the second permutator, the input of described overrun control is as the input of described overrun control, institute
The first outfan stating overrun control connects the first input end of the first permutator, the second of described overrun control
Outfan connects the first input end of the second permutator；
Second input of described first permutator connects the first phase of described main power source, the control of described first permutator
Holding the first control end as described supervisory relay, the first end of the coil of described first relay is as described first relay
The first input end of device, the second end of the coil of described first relay connects the second phase of described main power source；
Second input of described second permutator connects the first phase of described bypass supply, the control of described second permutator
End processed is as the second control end of described supervisory relay, and the first end of the coil of described second relay continues as described second
The first input end of electrical equipment, the second end of the coil of described second relay connects the second phase of described bypass supply；
Described first relay and the second relay are dynamic circuit connector type relay.
9. UPS as claimed in claim 1, it is characterised in that be parallel with the first display dress on the coil of described first relay
Put, the coil of described second relay is parallel with the second display device.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620535445.4U CN205666679U (en) | 2016-06-03 | 2016-06-03 | UPS of bypass automatic switch -over type |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620535445.4U CN205666679U (en) | 2016-06-03 | 2016-06-03 | UPS of bypass automatic switch -over type |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106549487A (en) * | 2016-12-08 | 2017-03-29 | 北京卫星制造厂 | A kind of master backup power failure monitor and automatic switching control circuit |
| CN108964246A (en) * | 2018-07-25 | 2018-12-07 | 郑州云海信息技术有限公司 | A kind of method for switching main and standby power supplies and system of test equipment |
| CN111009961A (en) * | 2019-12-20 | 2020-04-14 | 南京亚派科技股份有限公司 | Multifunctional dual-power automatic transfer switch |
-
2016
- 2016-06-03 CN CN201620535445.4U patent/CN205666679U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106549487A (en) * | 2016-12-08 | 2017-03-29 | 北京卫星制造厂 | A kind of master backup power failure monitor and automatic switching control circuit |
| CN106549487B (en) * | 2016-12-08 | 2019-02-19 | 北京卫星制造厂 | A kind of master backup power failure monitor and automatic switching control circuit |
| CN108964246A (en) * | 2018-07-25 | 2018-12-07 | 郑州云海信息技术有限公司 | A kind of method for switching main and standby power supplies and system of test equipment |
| CN108964246B (en) * | 2018-07-25 | 2021-11-23 | 郑州云海信息技术有限公司 | Main/standby power supply switching method and system of test equipment |
| CN111009961A (en) * | 2019-12-20 | 2020-04-14 | 南京亚派科技股份有限公司 | Multifunctional dual-power automatic transfer switch |
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