CN109921510A - Do not have a power failure cutover device and method - Google Patents
Do not have a power failure cutover device and method Download PDFInfo
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- CN109921510A CN109921510A CN201711312098.4A CN201711312098A CN109921510A CN 109921510 A CN109921510 A CN 109921510A CN 201711312098 A CN201711312098 A CN 201711312098A CN 109921510 A CN109921510 A CN 109921510A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
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Abstract
The present disclosure discloses a kind of cutover device and method that do not have a power failure, are related to power supply safety field.Wherein, which includes three groups of cutover circuits that do not have a power failure, wherein the every group of cutover circuit that do not have a power failure includes: main switch, is arranged between electrical equipment terminals and backup power source terminals；Test switch, is connected in parallel with main switch；Control circuit is detected, is arranged between electrical equipment terminals and backup power source terminals, and is connected with test switch；Wherein, whether the alternating current phase sequence of detection control circuit detection electrical equipment and backup power source phase sequence are consistent, and the opening and closing of test switch are controlled based on testing result, and allow main switch to be closed after test closes the switch.It can prevent delivery failure problem caused by exchanging the wiring error occurred in the cut-over process that do not have a power failure by the way that the cutover device that do not have a power failure is arranged carrying out replacement or electricity consumption adjustment operation to the UPS connecting with electrical equipment.
Description
Technical field
This disclosure relates to power supply safety field, more particularly to a kind of cutover device and method that do not have a power failure.
Background technique
With the continuous development of IT technology, many equipment needs continual operation, UPS (Uninterruptible
Power System/Uninterruptible Power Supply, uninterruptible power supply) it is widely used in the confession of important equipment
Electricity provides cloud center, IDC (Internet Data Center, the interconnection of continual Alternating Current Power Supply, especially telecommunications for it
Network data center) computer room, it is largely powered using UPS, in day-to-day operation maintenance, is frequently run onto UPS replacement or in operational process
In to equipment switchboard power supply be adjusted the case where, these can all influence the power supply of equipment.Because Alternating Current Power Supply is special
Property and complexity, the adjustment cutover of Alternating Current Power Supply be all using have a power failure by the way of, result in the shadow to rear end electrical equipment in this way
It rings, also the continuous sex service of important service is impacted.
Summary of the invention
The disclosure technical problem to be solved is to provide a kind of cutover device and method that do not have a power failure, can prevent to exchange
Do not have a power failure delivery failure problem caused by the wiring error occurred in cut-over process.
On the one hand according to the disclosure, a kind of do not have a power failure cutover device, including three groups of cutover circuits that do not have a power failure are proposed, wherein
The every group of cutover circuit that do not have a power failure includes: main switch, is arranged between electrical equipment terminals and backup power source terminals；Test is opened
It closes, is connected in parallel with main switch；Control circuit is detected, is arranged between electrical equipment terminals and backup power source terminals, and
With test switch connection；Wherein, detection control circuit detection electrical equipment alternating current phase sequence and backup power source phase sequence whether one
It causes, and controls the opening and closing of test switch based on testing result, and allow main switch to be closed after test closes the switch.
Optionally, detection control circuit includes relay.
Optionally, detect the relay coil both ends of control circuit respectively with electrical equipment terminals and backup power source wiring
End connection, the normally-closed contact one end for detecting control circuit are connect with backup power source terminals, the mistake that the other end passes through test switch
Crimping circle is connect with zero line side；The main contacts both ends for testing switch connect with electrical equipment terminals and backup power source terminals respectively
It connects, the auxiliary contact one end for testing switch is connect with backup power source terminals, and the other end passes through the coil without tension and zero of main switch
Line end connection；The contact both ends of main switch are connect with electrical equipment terminals and backup power source terminals respectively.
Optionally, if the power supply source for the uninterruptible power supply UPS in bypass condition that backup power source is connect with electrical equipment
It is identical, then under the alternating current phase sequence of electrical equipment and backup power source phase sequence unanimous circumstances, detect the relay of control circuit
Coil losing electricity detects the normally-closed contact closure of control circuit, and the coil without tension for testing switch obtains electric, and the main contacts for testing switch closes
The auxiliary contact closure closed, and test is driven to switch, the coil without tension of main switch obtain electric, the contact closure of main switch.
Optionally, if the power supply source for the uninterruptible power supply UPS in bypass condition that backup power source is connect with electrical equipment
It is identical, then in the case where the alternating current phase sequence of electrical equipment and backup power source phase sequence are inconsistent, detect the relay of control circuit
Device coil obtain it is electric, detect control circuit normally-closed contact disconnect, test the coil without tension power loss of switch, test the main contacts of switch
The auxiliary contact for disconnecting, and test being driven to switch disconnect, the coil without tension power loss of main switch, and the contact of main switch disconnects.
Optionally, cutover device that do not have a power failure further include: indicator light is connected in parallel with the coil without tension of test switch.
According to another aspect of the present disclosure, it is also proposed that a kind of method for cutting over using the cutover device that do not have a power failure, comprising: detection
Whether the alternating current phase sequence and backup power source phase sequence of control circuit detection electrical equipment are consistent；If the alternating current phase sequence of electrical equipment
It is consistent with backup power source phase sequence, then allow to test closing the switch；If test closes the switch, main switch is allowed to be closed；If master opens
It closes and closes, then allow to cut off the uninterruptible power supply UPS connecting with electrical equipment.
Optionally, backup power source is identical as in the power supply source of UPS of bypass condition.
Optionally, whether the alternating current phase sequence of detection control circuit detection electrical equipment unanimously wraps with backup power source phase sequence
Include: if the alternating current phase sequence and backup power source phase sequence of electrical equipment are inconsistent, detect control circuit relay coil obtain it is electric,
The normally-closed contact for detecting control circuit disconnects；If the alternating current phase sequence of electrical equipment is consistent with backup power source phase sequence, control is detected
The relay coil power loss of circuit processed detects the normally-closed contact closure of control circuit.
Optionally, if the normally-closed contact closure of detection control circuit, the coil without tension for testing switch obtains electric, test switch
Main contacts allow to be closed；The main contacts of test switch drives the auxiliary contact closure of test switch, thus the decompression of main switch
Coil obtains electric, and the contact of main switch allows to be closed；If the normally-closed contact for detecting control circuit disconnects, the decompression line of switch is tested
Power loss is enclosed, the main contacts for testing switch disconnects；The main contacts of test switch drives the auxiliary contact of test switch to disconnect, thus main
The contact of the coil without tension power loss of switch, main switch disconnects.
When the alternating current phase sequence for detecting electrical equipment is consistent with backup power source phase sequence, control test switch closes the disclosure
It closes, test switch control main switch closure, after main switch closure, then cuts off UPS and carry out replacement or electricity consumption adjustment operation, by setting
The cutover device that do not have a power failure is set, delivery failure caused by exchanging the wiring error occurred in the cut-over process that do not have a power failure can be prevented and asked
Topic.
By the detailed description referring to the drawings to the exemplary embodiment of the disclosure, the other feature of the disclosure and its
Advantage will become apparent.
Detailed description of the invention
The attached drawing for constituting part of specification describes embodiment of the disclosure, and together with the description for solving
Release the principle of the disclosure.
The disclosure can be more clearly understood according to following detailed description referring to attached drawing, in which:
Fig. 1 is that electrical equipment and backup power source are answered connection schematic diagram by the disclosure cutover device that do not have a power failure.
Fig. 2 is that the disclosure does not have a power failure the structural representation of one embodiment of each cutover circuit that do not have a power failure in cutover device
Figure.
Fig. 3 is that the disclosure does not have a power failure the structural schematic diagram of cutover device main circuit one embodiment.
Fig. 4 is that the disclosure does not have a power failure the structural representation of one embodiment of each cutover circuit that do not have a power failure in cutover device
Figure.
Fig. 5 be the disclosure do not have a power failure cutover device one embodiment structural schematic diagram.
Fig. 6 is structural schematic diagram of the disclosure using one embodiment of the method for cutting over for the cutover device that do not have a power failure.
Specific embodiment
The various exemplary embodiments of the disclosure are described in detail now with reference to attached drawing.It should also be noted that unless in addition having
Body explanation, the unlimited system of component and the positioned opposite of step, numerical expression and the numerical value otherwise illustrated in these embodiments is originally
Scope of disclosure.
Simultaneously, it should be appreciated that for ease of description, the size of various pieces shown in attached drawing is not according to reality
Proportionate relationship draw.
Be to the description only actually of at least one exemplary embodiment below it is illustrative, never as to the disclosure
And its application or any restrictions used.
Technology, method and apparatus known to person of ordinary skill in the relevant may be not discussed in detail, but suitable
In the case of, the technology, method and apparatus should be considered as authorizing part of specification.
It is shown here and discuss all examples in, any occurrence should be construed as merely illustratively, without
It is as limitation.Therefore, the other examples of exemplary embodiment can have different values.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, then in subsequent attached drawing does not need that it is further discussed.
For the purposes, technical schemes and advantages of the disclosure are more clearly understood, below in conjunction with specific embodiment, and reference
The disclosure is further described in attached drawing.
The disclosure is not when realization UPS exchange has a power failure cutover, to guarantee that electrical equipment does not have a power failure, as shown in Figure 1, right
When UPS is replaced or is adjusted to equipment electricity consumption, a backup power source and existing ups power can be introduced, electrical equipment is supplied jointly
Then electricity disconnects the power supply for needing to adjust again, the power supply in guarantee electrical equipment in this way is uninterrupted.
Wherein, Fig. 2 be the disclosure do not have a power failure cutover device one embodiment structural schematic diagram.The cutover dress that do not have a power failure
It sets including three groups of power failure cutover circuits, wherein the every group of cutover circuit that do not have a power failure includes main switch 1, test switch 2 and detection control
Circuit 3, in which:
Main switch 3, for being arranged between electrical equipment terminals and backup power source terminals, wherein electrical equipment
The other end is connect with UPS.As shown in figure 3, do not have a power failure cutter device include three groups of main switches, i.e. main switch K1, main switch K2 and
Main switch K3.Electrical equipment is connect with terminals A, B, C respectively, and backup power source is connect with terminals D, E, F, main switch K1 difference
It is connect with terminals A, D, main switch K2 is connect with terminals B, E respectively, and main switch K3 is connect with terminals C, F respectively.
Test switch 2 is connected in parallel with main switch 1.As shown in figure 3, the cutter device that do not have a power failure includes three groups of test switches,
Test switch K2, test switch K4, test switch K6.Wherein, test switch K2 it is in parallel with main switch K1, test switch K4 and
Main switch K3 is in parallel, and test switch K6 is in parallel with main switch K5.
It detects control circuit 3 to be arranged between electrical equipment terminals and backup power source terminals, and connects with test switch 2
It connects.Detection control circuit 3 be used for detect control circuit detection electrical equipment alternating current phase sequence and backup power source phase sequence whether one
It causes, if unanimously, controlling test switch 2 and being closed, test switch 2 controls main switch 1 and is closed.Wherein, main switch 1, test switch
2, detection control circuit 3 can be relay.
In this embodiment, do not have a power failure cutover device the every group of cutover circuit that do not have a power failure include main switch, test switch and
Detection control circuit, wherein main switch is arranged between electrical equipment terminals and backup power source terminals, test switch and master
Switch in parallel, detection control circuit and test switch connection, and in the alternating current phase sequence and backup power source for detecting electrical equipment
When phase sequence is consistent, control test is closed the switch, test switch control main switch closure, after main switch closure, so that backup power source
It to power supply for electrical equipment, then cuts off the UPS connecting with electrical equipment and carries out replacement or electricity consumption adjustment operation, do not had a power failure by setting
Cutover device can prevent delivery failure problem caused by exchanging the wiring error occurred in the cut-over process that do not have a power failure.
Fig. 4 is that the disclosure does not have a power failure the structural representation of one embodiment of each cutover circuit that do not have a power failure in cutover device
Figure.
Detect control circuit 3 31 both ends of relay coil respectively with electrical equipment terminals L and backup power source terminals M
32 one end of normally-closed contact of connection, detection control circuit 3 is connect with backup power source terminals M, and the other end passes through test switch 2
Coil without tension 21 is connect with zero line side N；Test switch 2 22 both ends of main contacts respectively with electrical equipment terminals L and standby electricity
23 one end of auxiliary contact of source terminals M connection, test switch 2 is connect with backup power source terminals M, and the other end passes through main switch
1 coil without tension 11 is connect with zero line side N, wherein main contacts 22 can be mechanically connected with auxiliary contact 23；The touching of main switch 1
12 both ends of point are connect with electrical equipment terminals L and backup power source terminals M respectively.
Wherein, electrical equipment terminals L can connect electrical equipment, such as connect load switchboard, and load switchboard and UPS connect
It connects, backup power source incoming end M can connect backup power source, wherein replaced when to be carried out to UPS or equipment electricity consumption is adjusted
When, since AC power source has the requirement of voltage, frequency, phase, to make two alternating currents while be connected in a cutover load
It is necessary that voltage, frequency, phase is identical.UPS is converted to bypass condition before cutover, chooses and is in same confession with UPS
The backup power source of power supply can ensure that the identical of voltage and frequency in this way.Therefore detection control circuit 3 only needs to detect that electrical equipment
Alternating current phase sequence and backup power source phase sequence it is whether consistent.If power supply source is consistent, the main contacts 22 of test switch 2 is controlled
Closure, so that the contact 12 of main switch 1 be driven to be closed.At this moment, load switchboard receives the power supply of UPS and backup power source simultaneously,
UPS electricity is cut off again and carries out replacement or electricity consumption adjustment operation, and load switchboard power supply is temporarily powered by backup power source, will not be interrupted.
When adjust and then secondary access UPS electricity, by do not have a power failure cutover device disconnect multiple wire be detached from backup power source, complete UPS more
It changes or power supply adjusts.
In the embodiment, the multiple connection that the cutover device that do not have a power failure of the disclosure provides backup power source to electrical equipment connects function
Can, when simultaneously machine operation three elements all meet for exchange, main switch closure facilitates practical cutover to operate, and phase sequence can be prevented different
When multiple attended operation caused by cutover accident.
Fig. 5 be the disclosure do not have a power failure cutover device one embodiment structural schematic diagram.The cutover device packet that do not have a power failure
Include main switch (K1, K3, K5), test switch (K2, K4, K6), detection control circuit (J1, J2, J3).
Wherein, contact one end of main switch K1 is connect with electrical equipment terminals A, the other end and backup power source terminals D
Connection, coil without tension one end of main switch K1 connect with zero line side N, the other end by test switch K2 auxiliary contact K2 ' and
The D connection of backup power source terminals.Test switch K2 main contacts one end connect with electrical equipment terminals A, the other end with it is spare
Coil without tension one end of supply terminals D connection, test switch K2 is connect with zero line side N, and the other end passes through detection control circuit
The normally-closed contact of J1 is connect with backup power source terminals D.Relay coil one end of detection control circuit J1 connects with electrical equipment
Line end A connection, the other end are connect with backup power source terminals D.
Contact one end of main switch K3 is connect with electrical equipment terminals B, and the other end is connect with backup power source terminals E,
Coil without tension one end of main switch K3 is connect with zero line side N, the auxiliary contact K4 ' and standby electricity that the other end passes through test switch K4
Source terminals E connection.Main contacts one end of test switch K4 is connect with electrical equipment terminals B, and the other end connects with backup power source
Coil without tension one end of line end E connection, test switch K4 is connect with zero line side N, and the other end is normal by detection control circuit J2's
Closed contact is connect with backup power source terminals E.The relay coil one end and electrical equipment terminals B for detecting control circuit J2 connect
It connects, the other end is connect with backup power source terminals E.
Contact one end of main switch K5 is connect with electrical equipment terminals C, and the other end is connect with backup power source terminals F,
Coil without tension one end of main switch K5 is connect with zero line side N, the auxiliary contact K6 ' and standby electricity that the other end passes through test switch K6
Source terminals F connection.Main contacts one end of test switch K6 is connect with electrical equipment terminals C, and the other end connects with backup power source
Coil without tension one end of line end F connection, test switch K6 is connect with zero line side N, and the other end is normal by detection control circuit J3's
Closed contact is connect with backup power source terminals F.The relay coil one end and electrical equipment terminals C for detecting control circuit J3 connect
It connects, the other end is connect with backup power source terminals F.
In practical cutover operation, when which connects backup power source to electrical equipment, terminals A, B, C
Connect electrical equipment side, terminals D, E, F connect backup power source side, and electrical equipment is connected with UPS, wherein UPS with it is spare
For power supply if same power supply source, i.e. UPS is identical as the voltage of backup power source and frequency, then the cutover device that do not have a power failure only needs detection to use
Whether the alternating current phase sequence of electric equipment and backup power source phase sequence are consistent.
When the phase of electrical equipment terminals A and backup power source terminals D is not identical, the relay of control circuit J1 is detected
There are 380 volts of alternating voltages at device coil both ends, and normally-closed contact disconnects, and test switch K2 coil without tension power-off, main contacts is in disconnected
Open state, auxiliary contact K2 ' are also at off-state, and the coil without tension of main switch K1 powers off, therefore, the contact of main switch K1
It is also at off-state.
When electrical equipment terminals A is identical as the phase of backup power source terminals D, the relay of control circuit J1 is detected
Coil both end voltage is 0, and normally-closed contact closure, test switch K2 coil without tension powers on, and main contacts is allowed to be in closure,
Its auxiliary contact K2 ' is also at closed state, and there are 220V AC power source, therefore, main switch in the coil without tension both ends of main switch K1
The contact of K1 is also at closed state.
Based on same principle, if the phase of electrical equipment terminals B and backup power source terminals E is not identical, test is opened
Closing K4 can not be closed, and cause main switch K3 that can not be closed；If the phase of electrical equipment terminals C and backup power source terminals F is not
When identical, test switch K6 can not be closed, and cause main switch K5 that can not be closed；If electrical equipment terminals B connects with backup power source
The phase of line end E is identical, operation test switch K4 closure, and then main switch K3 can be closed；If electrical equipment terminals C with it is standby
When identical with the phase of supply terminals F, operation test switch K6 closure, and then main switch K5 can be closed.
In the above-described embodiments, if electrical equipment is identical as backup power source phase, corresponding detection switch is allowed to be closed,
After K2, K4, K6 closure, circuit normal operation is observed, recloses main switch K1, K3, K5, completes backup power source to electrical equipment
Multiple connection.The case where having prevented closure switch in the case where phase sequence difference in this way, delivery failure caused even to cause the accident.
In another embodiment of the disclosure, this do not have a power failure cutover device can also include indicator light, the indicator light with
The coil without tension of test switch is connected in parallel, as shown in figure 5, indicator light LA and the coil without tension of test switch K2 are connected in parallel,
Indicator light LB and the coil without tension of test switch K4 are connected in parallel, and indicator light LC is in parallel with the test coil without tension of switch K6 to be connected
It connects.Detect that ABC is identical as phase on DEF terminals when detecting control circuit, corresponding display green light, if detection circuit is examined
Phase difference is measured, corresponding green light goes out, and can remind the alternating current phase sequence and backup power source phase sequence of staff's electrical equipment
It is whether consistent.
In another embodiment of the disclosure, the relay coil for detecting control circuit is connect with user equipment terminals
Branch road be provided with fuse, such as fuse FU1, FU2, FU3 in Fig. 5, failure caused by short circuit can be prevented.
Fig. 6 is structural schematic diagram of the disclosure using one embodiment of the method for cutting over for the cutover device that do not have a power failure.
In step 610, whether alternating current phase sequence and the backup power source phase sequence for detecting control circuit detection electrical equipment are consistent,
If consistent, 620 are thened follow the steps, otherwise, executes step 650.
In step 620, allow to test closing the switch.Wherein, the alternating current phase sequence of electrical equipment and backup power source phase sequence one
Cause, detect control circuit relay coil obtain it is electric, detect control circuit normally-closed contact disconnect, if detection control circuit it is normal
Closed contact closure, then test switch coil without tension obtain it is electric, test switch main contacts closure.
In step 630, main switch is allowed to be closed.If the main contacts closure of test switch, the auxiliary for driving test to switch
Contact closure, so that the coil without tension of main switch obtains electric, the contact closure of main switch.At this point, UPS and backup power source simultaneously to
Electric equipment power supply.
In step 640, allow to cut off the UPS connecting with electrical equipment.
In step 650, do not allow to test closing the switch.Wherein, if the alternating current phase sequence of electrical equipment and backup power source phase
Sequence is inconsistent, then detect control circuit relay coil obtain it is electric, detect control circuit normally-closed contact disconnect, test switch
Coil without tension power loss, the main contacts for testing switch disconnect.
In step 650, main switch is not allowed to be closed.If the main contacts of test switch disconnects, test is driven to switch auxiliary
Contact is helped to disconnect, thus the coil without tension power loss of main switch, the contact of main switch is disconnected.At this point, only being supplied from UPS to electrical equipment
Electricity.
In step 660, do not allow to cut off the UPS connecting with electrical equipment.
Existing UPS exchange cutover be mostly by the way of power failure cutover, even if by the way of the cutover that do not have a power failure,
Operational risk is big, unprotect.The disclosure is completed using electric loading in the case where not having a power failure using the method disconnected afterwards is first connected
The replacement of UPS or the electricity consumption adjustment of equipment.For example, backup power source is first connected to electrical equipment by the cutover device that do not have a power failure,
Wherein, and the UPS of electrical equipment connection is identical as the power supply source of backup power source, in the case where main switch closure, allows to cut off
The UPS being connect with electrical equipment.To reduce maloperation when cutover, has the advantages that cutover is easy to operate, improve exchange
Do not have a power failure the safety of cutover.
In another concrete application of the disclosure, because the super time limit uses, security risk occur needs one UPS of certain core computer room
It replaces, loads and then use the method for the cutover that do not have a power failure if power failure cutover service impact is big for core equipment.It is long using one
Rectangular distribution box, (contact capacity can load three 200A main switches with no-voltage trip function of the interior installation of distribution box according to cutover
The selected adjustment of size), main switch input terminal is connected with copper bar respectively with output end, in the prepared screw-bolt hole hole conduct of copper bar top
A zero-emission is arranged in connecting line terminals in distribution box.It is switched in the test of main switch both ends and associated no-voltage trip function
(16A), detection control circuit are mounted in cabinet, and the open and close of test switch is detected and controlled to phase sequence.Three
Indicator light is mounted on distribution box door, illustrates that phase sequence is identical when indicator light is bright, can be closed test switch, on the contrary then cannot close
Test switch is closed, test could closure main switch after closing the switch.
Ensure that alternating current is stablized before cutover, UPS is converted to bypass condition, selects to input the standby of same hair power supply source with UPS
With power supply, three-phase electricity is taken to be connected to the end D, E, F for exchanging the cutover device that do not have a power failure with power cable from backup power source, with electric power electricity
Cable connection exchanges the A, B for the cutover device that do not have a power failure, C-terminal to switchboard is loaded, and when the three-phase phase-sequence of connection is identical, three are indicated
Lamp is bright, then can close three test switches, and test switch closes main switch after closing again, completes to connect load the multiply-connected of switchboard,
Load switchboard receives UPS and backup power source power supply simultaneously.Ups power is disconnected at this time, shuts down UPS, and UPS is replaced.
So far, the disclosure is described in detail.In order to avoid covering the design of the disclosure, it is public that this field institute is not described
The some details known.Those skilled in the art as described above, completely it can be appreciated how implementing technology disclosed herein
Scheme.
Disclosed method and device may be achieved in many ways.For example, can by software, hardware, firmware or
Person's software, hardware, firmware any combination realize disclosed method and device.The step of for the method it is above-mentioned
Sequence is merely to be illustrated, and the step of disclosed method is not limited to sequence described in detail above, unless with other sides
Formula illustrates.In addition, in some embodiments, the disclosure can be also embodied as recording program in the recording medium, these
Program includes for realizing according to the machine readable instructions of disclosed method.Thus, the disclosure also covers storage for executing
According to the recording medium of the program of disclosed method.
Although being described in detail by some specific embodiments of the example to the disclosure, the skill of this field
Art personnel it should be understood that above example merely to be illustrated, rather than in order to limit the scope of the present disclosure.The skill of this field
Art personnel are it should be understood that can modify to above embodiments in the case where not departing from the scope of the present disclosure and spirit.This public affairs
The range opened is defined by the following claims.
Claims (10)
1. one kind does not have a power failure cutover device, including three groups of cutover circuits that do not have a power failure, wherein the every group of cutover circuit that do not have a power failure include:
Main switch is arranged between electrical equipment terminals and backup power source terminals；
Test switch, is connected in parallel with the main switch；
Control circuit is detected, is arranged between electrical equipment terminals and backup power source terminals, and switchs and connects with the test
It connects；
Wherein, whether the alternating current phase sequence of the detection control circuit detection electrical equipment and backup power source phase sequence are consistent, and base
The opening and closing of the test switch is controlled in testing result, and allows the main switch to be closed after the test closes the switch.
2. the cutover device according to claim 1 that do not have a power failure, wherein the detection control circuit includes relay.
3. the cutover device according to claim 2 that do not have a power failure, wherein
The relay coil both ends of the detection control circuit connect with the electrical equipment terminals and the backup power source respectively
Normally-closed contact one end of line end connection, the detection control circuit is connect with the backup power source terminals, and the other end passes through institute
The coil without tension for stating test switch is connect with zero line side；
The main contacts both ends of the test switch are connect with the electrical equipment terminals and the backup power source terminals respectively,
Auxiliary contact one end of the test switch is connect with the backup power source terminals, the decompression that the other end passes through the main switch
Coil is connect with zero line side；
The contact both ends of the main switch are connect with the electrical equipment terminals and the backup power source terminals respectively.
4. the cutover device according to claim 3 that do not have a power failure, wherein
If the power supply source phase for the uninterruptible power supply UPS in bypass condition that the backup power source is connect with the electrical equipment
Together, then under the alternating current phase sequence of the electrical equipment and the backup power source phase sequence unanimous circumstances, the detection control electricity
The relay coil power loss on road, it is described detection control circuit normally-closed contact closure, it is described test switch coil without tension obtain it is electric,
The main contacts closure of the test switch, and drive the auxiliary contact closure of the test switch, the decompression line of the main switch
Enclose electric, the contact closure of the main switch.
5. the cutover device according to claim 3 that do not have a power failure, wherein
If the power supply source phase for the uninterruptible power supply UPS in bypass condition that the backup power source is connect with the electrical equipment
Together, then in the case where the alternating current phase sequence of the electrical equipment and the backup power source phase sequence are inconsistent, the detection control
The relay coil of circuit obtains electric, the normally-closed contact disconnection of the detection control circuit, the coil without tension mistake of the test switch
The main contacts of electricity, the test switch disconnects, and the auxiliary contact of the test switch is driven to disconnect, the decompression of the main switch
The contact of coil losing electricity, the main switch disconnects.
6. according to the cutover device as claimed in claim 3 to 5 that do not have a power failure, further includes:
Indicator light is connected in parallel with the coil without tension of the test switch.
7. a kind of method for cutting over using the cutover device that do not have a power failure as described in claim 1-3 is any, comprising:
Whether alternating current phase sequence and the backup power source phase sequence for detecting control circuit detection electrical equipment are consistent；
If the alternating current phase sequence of the electrical equipment is consistent with the backup power source phase sequence, allow to test closing the switch；
If the test closes the switch, main switch is allowed to be closed；
If the main switch closure, allows to cut off the uninterruptible power supply UPS connecting with the electrical equipment.
8. method for cutting over according to claim 7, wherein
The backup power source is identical as in the power supply source of the UPS of bypass condition.
9. method for cutting over according to claim 8, the alternating current phase sequence of detection control circuit detection electrical equipment with it is spare
Power phase whether unanimously include:
If the alternating current phase sequence of the electrical equipment and the backup power source phase sequence are inconsistent, it is described detection control circuit after
Electric apparatus coil obtains electric, the normally-closed contact disconnection of the detection control circuit；
If the alternating current phase sequence of the electrical equipment is consistent with the backup power source phase sequence, the relay of the detection control circuit
Device coil losing electricity, the normally-closed contact closure of the detection control circuit.
10. method for cutting over according to claim 9, wherein
If the normally-closed contact closure of the detection control circuit, the coil without tension of the test switch obtains electric, and the test is opened
The main contacts of pass allows to be closed；The main contacts of the test switch drives the auxiliary contact closure of the test switch, thus institute
The coil without tension for stating main switch obtains electric, and the contact of the main switch allows to be closed；
If the normally-closed contact of the detection control circuit disconnects, the coil without tension power loss of the test switch, the test is opened
The main contacts of pass disconnects；The main contacts of the test switch drives the auxiliary contact of the test switch to disconnect, thus the master
The contact of the coil without tension power loss of switch, the main switch disconnects.
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