CN207800395U - Box type transformer low pressure universal switch automatic switching-on device - Google Patents
Box type transformer low pressure universal switch automatic switching-on device Download PDFInfo
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- CN207800395U CN207800395U CN201721879263.XU CN201721879263U CN207800395U CN 207800395 U CN207800395 U CN 207800395U CN 201721879263 U CN201721879263 U CN 201721879263U CN 207800395 U CN207800395 U CN 207800395U
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Abstract
The utility model provides a kind of box type transformer low pressure universal switch automatic switching-on device, the technical issues of to solve to be unable to automatic closing after box type transformer low voltage incoming line cabinet universal switch tripping in the prior art.Including：Voltage detection unit and startup combined floodgate unit；Wherein, voltage detection unit, including：Two-phase air switch QF, input terminal are connected across the B phase firewires of low-voltage cabinet inlet wire on N phase zero curves, and output end is connect with the input terminal of auxiliary contact DF；Start combined floodgate unit, including：The first branch, the second branch and the third branch being arranged in parallel between two output ends of auxiliary contact DF；The normally opened contact of first A.C. contactor KM1 is arranged in parallel with former universal switch manual energy storage button SB1；The normally opened contact of second A.C. contactor KM2 is arranged in parallel with proper energy switch manual switch-on button SB2.Compared with prior art, the utility model improves operating efficiency, alleviates the workload of operating personnel, reduces economic loss.
Description
Technical field
The utility model belongs to technical field of electric power system control more particularly to a kind of box type transformer low pressure universal switch
Automatic switching-on device.
Background technology
Universal switch is mainly used to distribute electric energy and protection circuit in box type transformer low voltage incoming line cabinet and power-supply device is exempted from
Overloaded, under-voltage, short circuit, the harm of the failures such as single-phase earthing.No-voltage trip function is one kind that low pressure universal switch carries
Important defencive function, installation no-voltage release is achieved in universal switch.When transformer submitting voltage is specified less than 70%
When voltage, buckle releaser can thread off automatically, disconnect low pressure master switch, protect master switch electrical equipment below or load from owing electricity
The damage of pressure, at the same also effectively prevent circuit restore power transmission after, the user equipment of all taiwan areas starts simultaneously, causes circuit wink
When overload, impact power grid security, no-voltage trip is a kind of simple and effective distribution low-voltage side protected mode.
But existing universal switch, also automatic trip due to no-voltage release decompression, and do not have automatic switching-in function.Cause
Inevitably there are the transient faults such as transient voltage fluctuation, flickering, momentary power failure in electric system, transformer voltage can be extensive quickly
It is multiple normal, after such reason causes universal switch to trip, to restore supply of electric power, it is necessary to which staff makes ten thousand to on-site manual
It can switch and close a floodgate, cause electric power feeding time long, make troubles to people’s lives, or even cause economic loss.
Invention content
To solve to be unable to the technology of automatic closing after box type transformer low voltage incoming line cabinet universal switch trips in the prior art
Problem, the utility model provide a kind of box type transformer low pressure universal switch automatic switching-on device.
In order to solve the above technical problems, box type transformer low pressure universal switch automatic closing dress provided by the utility model
It sets, including：Voltage detection unit and startup combined floodgate unit；
Wherein, voltage detection unit, including：Two-phase air switch QF, input terminal are connected across the B phase firewires of low-voltage cabinet inlet wire
With on N phase zero curves, output end is connect with the input terminal of auxiliary contact DF；
Start combined floodgate unit, including：Be arranged in parallel the first branch between two output ends of auxiliary contact DF, second
Road and third branch；The normally opened contact of first A.C. contactor KM1 is arranged in parallel with former universal switch manual energy storage button SB1；
The normally opened contact of second A.C. contactor KM2 is arranged in parallel with proper energy switch manual switch-on button SB2；Wherein, the first branch,
Including：The coil of time relay KT；The second branch, including：Time relay instantaneous contacts KT-1 and the first A.C. contactor
The coil tandem of KM1；Third branch, including：The coil string of time relay delayed contact KT-2 and the second A.C. contactor KM2
It connects.
The utility model advantageous effect includes：
With the mode phase for needing manual operation energy storage button and switch knob that universal switch can just be made to close a floodgate in the prior art
Than scheme provided by the utility model can be after universal switch tripping, and whether the automatic inlet wire for detecting low voltage incoming line cabinet restores
Voltage, and when voltage restores, the automatic tank circuit and closing circuit for starting universal switch makes universal switch automatic closing,
Voltage conveying restores normal, improves operating efficiency, alleviates the workload of operating personnel, reduce economic loss.
Description of the drawings
In the accompanying drawings：
Fig. 1 is box type transformer low pressure universal switch control loop in the prior art；
Fig. 2 is box transformer low voltage universal switch control loop in the utility model.
Reference sign：SB1：Manual energy storage button；SB2：Closing by hand button；DF：Auxiliary contact；XK：Stroke is opened
It closes；K1：Intermediate relay；M：Energy storage motor；DT：Releasing can electromagnet；QF：Two-phase air switch；KT：The time relay；KT1：
Time relay instantaneous contacts；KT2：Time relay delayed contact；KM1：First AC relay；KM2：Second exchange relay
Device.
Specific implementation mode
Below in conjunction with the accompanying drawings, the utility model is described in detail with specific embodiment.
As shown in fig.2, box type transformer low pressure universal switch automatic switching-on device provided in this embodiment, including：Electricity
It presses detection unit and starts combined floodgate unit；
Wherein, voltage detection unit, including：Two-phase air switch QF, input terminal are connected across the B phase firewires of low-voltage cabinet inlet wire
With on N phase zero curves, output end is connect with the input terminal of auxiliary contact DF；
Start combined floodgate unit, including：Be arranged in parallel the first branch between two output ends of auxiliary contact DF, second
Road and third branch；The normally opened contact of first A.C. contactor KM1 is arranged in parallel with former universal switch manual energy storage button SB1；
The normally opened contact of second A.C. contactor KM2 is arranged in parallel with proper energy switch manual switch-on button SB2；Wherein, the first branch,
Including：The coil of time relay KT；The second branch, including：Time relay instantaneous contacts KT-1 and the first A.C. contactor
The coil tandem of KM1；Third branch, including：The coil string of time relay delayed contact KT-2 and the second A.C. contactor KM2
It connects.
As shown in fig.1, for the control loop of former universal switch.After universal switch trips, restore universal switch manually
Process it is as follows：
Firstly, it is necessary to start tank circuit；It presses manual energy storage button SB1,380V alternating current to flow out from C phase conductors, warp
Connecting terminal 43 and auxiliary contact DF, using travel switch XK normally-closed contacts, by the coil of intermediate relay K1, through wiring
Terminal 42 returns to A phase conductors；After the coil of intermediate relay K1 is powered, three pairs of normally opened contacts of K1 are closed, A phase conductor electric currents warp
Three pairs of K1 normally opened contacts after connecting terminal 42, energy storage motor M and closure are crossed, connecting terminal 41 is flowed through, returns to C phase conductors,
Energy storage motor M is powered up, energy storage motor M work once electrifieds, pulling energy-stored spring is low pressure universal switch spring mechanism energy storage；
Then, it needs to start closing circuit；It presses closing by hand button SB2,380V alternating current to flow out from C phase conductors, warp
Connecting terminal 44 returns to A phase conductors, to releasing using auxiliary contact DF with energy electromagnet DT coils are released by connecting terminal 42
It can power up electromagnet DT moments；Energy electromagnet DT energized actions are released, universal switch operating mechanism spring releases energy, universal switch
It closes a floodgate.
As shown in fig.2, the universal switch control loop of the automatic switching-on device equipped with the utility model embodiment, when ten thousand
After energy switch trip, first, whether there is voltage in the two-phase air switch QF detection circuits of voltage detection unit, if voltage restores
Normally, then start combined floodgate unit work once electrified；Then, the time relay KT coils in the first branch obtain electric, make second first
Time relay KT instantaneous contacts in branch are closed, and the coil of A.C. contactor KM1 obtains electric, makes and manual energy storage button SB1
A.C. contactor KM1 normally opened contacts in parallel are closed, and are started tank circuit, are made universal switch spring mechanism energy storage；Next makes
Time relay KT delayed contacts in two branches are closed, and the coil of A.C. contactor KM2 obtains electric, makes and closing by hand button
The A.C. contactor KM2 normally opened contacts of SB2 parallel connections are closed, and start closing circuit, and universal switch operating mechanism spring is made to discharge energy
Amount, universal switch close a floodgate.
In conclusion compared with prior art, the scheme that the utility model embodiment provides can trip in universal switch
Afterwards, whether the inlet wire of detection low voltage incoming line cabinet restores voltage automatically, and when voltage restores, the automatic energy storage for starting universal switch
Circuit and closing circuit make universal switch automatic closing, voltage conveying restore normal, improve operating efficiency, reduction alleviates
The workload of operating personnel, reduces economic loss.
Obviously, those skilled in the art can carry out the utility model various modification and variations without departing from this practicality
Novel spirit and scope.If in this way, these modifications and variations of the present invention belong to the utility model claims and
Within the scope of its equivalent technologies, then the utility model is also intended to include these modifications and variations.
Claims (1)
1. a kind of box type transformer low pressure universal switch automatic switching-on device, which is characterized in that including：It voltage detection unit and opens
Dynamic circuit connector lock unit；
Wherein, voltage detection unit, including：Two-phase air switch QF, input terminal are connected across the B phase firewires and N of low-voltage cabinet inlet wire
On phase zero curve, output end is connect with the input terminal of auxiliary contact DF；
Start combined floodgate unit, including：Be arranged in parallel the first branch between two output ends of auxiliary contact DF, the second branch and
Third branch；The normally opened contact of first A.C. contactor KM1 is arranged in parallel with former universal switch manual energy storage button SB1；Second
The normally opened contact of A.C. contactor KM2 is arranged in parallel with proper energy switch manual switch-on button SB2；Wherein, the first branch, including：
The coil of time relay KT；The second branch, including：Time relay instantaneous contacts KT-1's and the first A.C. contactor KM1
Coil tandem；Third branch, including：The coil tandem of time relay delayed contact KT-2 and the second A.C. contactor KM2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721879263.XU CN207800395U (en) | 2017-12-28 | 2017-12-28 | Box type transformer low pressure universal switch automatic switching-on device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721879263.XU CN207800395U (en) | 2017-12-28 | 2017-12-28 | Box type transformer low pressure universal switch automatic switching-on device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207800395U true CN207800395U (en) | 2018-08-31 |
Family
ID=63280155
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721879263.XU Expired - Fee Related CN207800395U (en) | 2017-12-28 | 2017-12-28 | Box type transformer low pressure universal switch automatic switching-on device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207800395U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113078034A (en) * | 2021-04-26 | 2021-07-06 | 福建工程学院 | Household air switch device capable of automatically switching on after tripping and control method |
-
2017
- 2017-12-28 CN CN201721879263.XU patent/CN207800395U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113078034A (en) * | 2021-04-26 | 2021-07-06 | 福建工程学院 | Household air switch device capable of automatically switching on after tripping and control method |
| CN113078034B (en) * | 2021-04-26 | 2023-04-21 | 福建工程学院 | Air switch device for automatic closing after tripping for household and control method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180831 Termination date: 20181228 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |