CN206742066U - Bis- reverse charge warning devices of PT - Google Patents
Bis- reverse charge warning devices of PT Download PDFInfo
- Publication number
- CN206742066U CN206742066U CN201720564449.XU CN201720564449U CN206742066U CN 206742066 U CN206742066 U CN 206742066U CN 201720564449 U CN201720564449 U CN 201720564449U CN 206742066 U CN206742066 U CN 206742066U
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- Prior art keywords
- bis
- auxiliary
- coil
- auxiliary reclay
- casing
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- 230000015556 catabolic process Effects 0.000 abstract description 3
- 238000012423 maintenance Methods 0.000 abstract description 3
- 230000005611 electricity Effects 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001727 in vivo Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Abstract
It the utility model is related to the maintenance aid of voltage transformer, specially bis- reverse charge warning devices of PT, including casing, include voltage relay in casing, one end of potential relay coil connects with PT auxiliary airs switch upper end side, the other end of potential relay coil connects with one end of the coil of auxiliary reclay, the other end ground connection of the coil of auxiliary reclay；Auxiliary contact one end of auxiliary reclay is connected with the positive pole of dc source, and the other end is connected by alarm lamp with one end of electric bell, and the other end of electric bell connects with the negative pole of dc source, and the auxiliary contact both ends of auxiliary reclay are also parallel with testing button.Bis- reverse charge warning devices of PT are on the basis of existing technical safety measures, the last of active protection is added together to insure, the person and equipment breakdown caused by bis- reverse charges of PT can be effectively prevented, can ensure to cause bis- reverse charges of PT to send sound and light alarm signal to prevent from unexpectedly occurring equipment or human users are improper.
Description
Technical field
It the utility model is related to the maintenance aid of voltage transformer, specially bis- reverse charge warning devices of PT.
Background technology
The voltage transformer in transformer station（PT）Interruption maintenance working site, bis- reverse charges of PT are extremely dangerous.PT
Secondary reverse charge refers to when voltage transformer disables or overhauls, and secondary lateral primary side reverse charge, causes high electricity in primary side
Pressure, cause the person and equipment breakdown.
Prevent that PT reverse charges from mainly taking following 2 technical measures at present, one, the isolation of off voltage transformer primary side
Switch, open YQJ relays auxiliary node.2nd, off voltage transformer secondary circuit, PT air switches can be typically taken,
Prevent a secondary lateral reverse charge.But if there are conjunction PT air switches, or voltage secondary circuit by mistake in electric field
It is by mistake arranged side by side, the risk that bis- reverse charges of PT occur is may result in, electric power overhaul working site, which lacks, at present is directed to problems
Management and control technical measures.
The content of the invention
The utility model is in order to solve the above problems, there is provided bis- reverse charge warning devices of PT.
The utility model adopts the following technical scheme that realization：Bis- reverse charge warning devices of PT, including casing, case
Include voltage relay and auxiliary reclay in vivo, one end of potential relay coil and PT auxiliary airs switch upper end side connect
Connect, the other end of potential relay coil connects with one end of the coil of auxiliary reclay, the coil of auxiliary reclay it is another
End ground connection；Auxiliary contact one end of auxiliary reclay connects with the positive pole of dc source, and the other end passes through alarm lamp and electric bell
One end connects, and the other end of electric bell connects with the negative pole of dc source, and the auxiliary contact both ends of auxiliary reclay are also parallel with survey
Button is tried, wherein alarm lamp, electric bell and testing button is all disposed within casing, and magnet is also equipped with casing.
Voltage relay, which is worked as, adopts voltage out-of-limit（15V）Turn on automatically loop afterwards, in starting after voltage relay starts
Between relay, auxiliary reclay start after, its auxiliary contact connect.Alarm lamp sends light warning, and electric bell sends alarm.Make
Determine that warning function is normal with testing button is preceding pressed.Casing absorption is set to be slided in working site, anti-locking apparatus using magnet magnetic force
Fall.
Bis- reverse charge warning devices of PT are monitoring PT bis- times using the method for monitoring bis- root voltage actual values of PT
After voltage out-of-limit, sound and light alarm signal is sent, warning operating personnel PT has reversely charging risk, it is necessary to monitor safe practice again
Measure.Bis- reverse charge warning devices of PT on the basis of existing technical safety measures, add active protection it is last together
Insurance, the person and equipment breakdown caused by can effectively preventing bis- reverse charges of PT, can ensure in equipment or human users not
Prevent from unexpectedly occurring when causing bis- reverse charges of PT to send sound and light alarm signal.
Brief description of the drawings
Fig. 1 is circuit theory diagrams of the present utility model.
Fig. 2 is structural representation of the present utility model.
In figure：1- binding clips, 2- voltage relays, 3- auxiliary reclays, 4- auxiliary contact, 5- alarm lamps, 6- electric bells, 7-
Testing button, 8- dc sources, 9- magnet.
Embodiment
Bis- reverse charge warning devices of PT, including casing, casing is interior to include voltage relay 2 and auxiliary reclay 3, voltage
One end electric wire and binding clip 1 of the coil of relay 2 are connected with PT auxiliary airs switch upper end side, the coil of voltage relay 2
The other end connected with one end of the coil of auxiliary reclay 3, the other end of the coil of auxiliary reclay 3 ground connection；Middle relay
One end of auxiliary contact 4 of device 3 is connected with the positive pole of dc source 8, and the other end is connected by one end of alarm lamp 5 with electric bell 6, electricity
The other end of bell 6 connects with the negative pole of dc source 8, and dc source 8 selects 5V dc-batteries, convenient use, is not required to external electricity
Source, the both ends of auxiliary contact 4 of auxiliary reclay 3 are also parallel with testing button 7, wherein alarm lamp 5, electric bell 6 and testing button 7 all
It is arranged on casing, magnet 9 is also equipped with casing.
Claims (1)
- Bis- reverse charge warning devices of 1.PT, it is characterised in that including casing, include voltage relay in casing（2）With centre after Electrical equipment（3）, voltage relay（2）One end of coil connects with PT auxiliary airs switch upper end side, voltage relay（2）Coil The other end and auxiliary reclay（3）Coil one end connection, auxiliary reclay（3）Coil the other end ground connection；It is middle Relay（3）Auxiliary contact（4）One end and dc source（8）Positive pole connection, the other end passes through alarm lamp（5）And electric bell （6）One end connection, electric bell（6）The other end and dc source（8）Negative pole connection, auxiliary reclay（3）Auxiliary contact （4）Both ends are also parallel with testing button（7）, wherein alarm lamp（5）, electric bell（6）And testing button（7）It is all disposed within casing, Magnet is also equipped with casing（9）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720564449.XU CN206742066U (en) | 2017-05-20 | 2017-05-20 | Bis- reverse charge warning devices of PT |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720564449.XU CN206742066U (en) | 2017-05-20 | 2017-05-20 | Bis- reverse charge warning devices of PT |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206742066U true CN206742066U (en) | 2017-12-12 |
Family
ID=60567096
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720564449.XU Active CN206742066U (en) | 2017-05-20 | 2017-05-20 | Bis- reverse charge warning devices of PT |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206742066U (en) |
-
2017
- 2017-05-20 CN CN201720564449.XU patent/CN206742066U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |