CN209028169U - A kind of high voltage display device - Google Patents
A kind of high voltage display device Download PDFInfo
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- CN209028169U CN209028169U CN201821641308.4U CN201821641308U CN209028169U CN 209028169 U CN209028169 U CN 209028169U CN 201821641308 U CN201821641308 U CN 201821641308U CN 209028169 U CN209028169 U CN 209028169U
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- resistance
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- switching
- pressure
- voltage sensor
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Abstract
The utility model provides a kind of high voltage display device, including voltage sensor, terminal board, display unit.It further include resistance to pressure switching unit and locking unit；The secondary terminals of voltage sensor are separately connected display unit, resistance to pressure switching unit and locking unit by terminal board.The resistance to pressure switching unit includes change-over switch SA, pressure resistance switching indicator light LD, run indicator HD and switching relay K1；Change-over switch SA includes operation end and test end, and the coil of test end connection switching relay K1 and the operation end of pressure resistance switching indicator light LD, change-over switch SA of change-over switch SA connects run indicator HD；Three normally opened contacts of switching relay K1 are connected between three secondary terminals Ua, Ub, Uc of voltage sensor and power ground.The flexible switching tested with operating status is realized by resistance to pressure switching unit, changes the conventional method that original pressure test must be shorted ground connection, and realization has high pressure electric locking cabinet door, and control power supply, which disappears, is latched cabinet door.
Description
Technical field
The utility model relates to High-Voltage Technology field, in particular to a kind of high voltage display device.
Background technique
During the high-tension apparatus ac voltage withstanding test with high voltage display device, needing before pressure test will be high
The secondary three-phase over the ground of pressure sensor is shorted, and again restores secondary connection after pressure test, this joins pressure resistance examination in high pressure
It tests or annual exhausted guarantor tests necessary duplicate work in the process, this brings inconvenience to pressure test, when not only wasting
Between and increase error probability, it is necessary to improve.
Summary of the invention
In order to solve the problems, such as described in background technique, the utility model provides a kind of high voltage display device, by resistance to
Pressure switching unit realizes test and the flexible switching of operating status, changes the tradition side that original pressure test must be shorted ground connection
Method, realization have high pressure electric locking cabinet door, and control power supply, which disappears, is latched cabinet door.
In order to achieve the above object, the utility model is implemented with the following technical solutions:
A kind of high voltage display device, including voltage sensor, terminal board, display unit.It further include that pressure resistance switching is single
Member and locking unit；The secondary terminals of voltage sensor are separately connected display unit, resistance to pressure switching unit and locking by terminal board
Unit.
The resistance to pressure switching unit includes change-over switch SA, pressure resistance switching indicator light LD, run indicator HD and switching
Relay K1；Change-over switch SA includes operation end and test end, the line of the test end connection switching relay K1 of change-over switch SA
The operation end of circle and pressure resistance switching indicator light LD, change-over switch SA connect run indicator HD；Three for switching relay K1 are normal
Contact is opened to be connected between three secondary terminals Ua, Ub, Uc of voltage sensor and power ground.
The locking unit include split-phase relay Ka, Kb and Kc, locking relay Ksd, power monitoring relay Ko,
Button QA and electric lock DS, the coil of three split-phase relays Ka, Kb and Kc be connected to voltage sensor three secondary terminals Ua,
Between Ub, Uc and power ground；Connect locking relay Ksd's after the normally opened contact of three split-phase relays Ka, Kb and Kc are in parallel
Coil；After the prescribing of the normally-closed contact of locking relay Ksd and the normally opened contact of power monitoring relay Ko and button QA is connected
It is connected with the coil of electric lock DS.
The coil of power monitoring relay Ko in the locking unit is connected between the positive and negative electrode of control power supply.
The display unit includes indicator light La, Lb, Lc and resistance R1, R2, R3, and indicator light La connects company with resistance R1
It is connected between voltage sensor secondary terminals Ua and power ground, indicator light Lb and resistance R2 are connected in series in voltage sensor secondary terminals
Between Ub and power ground, indicator light Lc and resistance R3 are connected in series between voltage sensor secondary terminals Uc and power ground.
The voltage sensor includes three, and primary end is separately connected high voltage power supply A, B, C-terminal, and secondary terminals difference is defeated
Ua, Ub, Uc out.
Compared with prior art, the utility model has the beneficial effects that
1, increase pressure test switching circuit, realize that pressure test no longer needs to for the secondary voltage line of high pressure sensor being shorted
Charged display device change-over switch only need to be switched to testing position by ground connection, improve operating efficiency, damage when avoiding pressure resistance
Electrification display.Remove " short circuit-recovery " work repeatedly from, it is easy to use, test efficiency is improved, during avoiding reconnection
The fault of generation prevents problem generation.
2, change traditional wired method in pressure test, complete to be shorted switching over the ground by relay, save so big
The setting up time and cost of labor of amount improve testing equipment service efficiency, obtain good effect in actual use, have
There is very strong practicability.
Detailed description of the invention
Fig. 1 is the overall structure block diagram of the utility model；
Fig. 2 is the Sensor section circuit diagram of the utility model；
Fig. 3 is the pressure resistance switching and lock-in control partial circuit diagram of the utility model.
Specific embodiment
Specific embodiment provided by the utility model is described in detail below in conjunction with attached drawing.
As shown in Figure 1-3, a kind of high voltage display device, including voltage sensor PT, terminal board D, display unit.Also
Including resistance to pressure switching unit and locking unit；The secondary terminals of voltage sensor PT are separately connected display unit, resistance to by terminal board D
Pressure switching unit and locking unit.
As Figure 2-3, the resistance to pressure switching unit includes change-over switch SA, pressure resistance switches indicator light LD, operation refers to
Show lamp HD and switching relay K1；Change-over switch SA includes operation end and test end, and the test end of change-over switch SA connects switching
The coil of relay K1 and the operation end of pressure resistance switching indicator light LD, change-over switch SA connect run indicator HD；Switch relay
Three normally opened contacts of device K1 are connected between three secondary terminals Ua, Ub, Uc of voltage sensor PT and power ground.
The locking unit include split-phase relay Ka, Kb and Kc, locking relay Ksd, power monitoring relay Ko,
Button QA and electric lock DS, the coil of three split-phase relays Ka, Kb and Kc be connected to voltage sensor PT three secondary terminals Ua,
Between Ub, Uc and power ground；Connect locking relay Ksd's after the normally opened contact of three split-phase relays Ka, Kb and Kc are in parallel
Coil；After the prescribing of the normally-closed contact of locking relay Ksd and the normally opened contact of power monitoring relay Ko and button QA is connected
It is connected with the coil of electric lock DS.
The coil of power monitoring relay Ko in the locking unit is connected between the positive and negative electrode of control power supply.
The display unit includes indicator light La, Lb, Lc and resistance R1, R2, R3, and indicator light La connects company with resistance R1
It is connected between voltage sensor PT secondary terminals Ua and power ground, indicator light Lb and resistance R2 are connected in series in voltage sensor PT bis-
Between secondary end Ub and power ground, indicator light Lc and resistance R3 be connected in series in voltage sensor PT secondary terminals Uc and power ground it
Between.
The voltage sensor PT includes three, and primary end connection high voltage power supply A, B, C-terminal, secondary terminals export respectively
Ua、Ub、Uc。
The application method and control principle of the utility model are as follows:
(1) control power supply electrifying when pressure test first, power monitoring relay Ko obtain it is electric, before high pressure applies Ka, Kb,
Kc is without electricity, so locking relay Ksd is discharged without electricity, normally-closed contact closure presses QA switch at this time, and DS obtains electric opening, cabinet door without
Electricity can be opened, and SA is switched to testing position by the inspection work before doing pressure resistance, light LD and meanwhile switch relay K1 obtain it is electric, lead to
It crosses the contact K1 to be shorted voltage sensor PT secondary line over the ground, carries out resistance to press operation, SA switch is switched to operation after pressure resistance
Position monitors high-voltage signal.
(2) latch portion: when no high pressure, relay Ka, Kb, Kc must not be electric without electricity, locking relay Kds, and Kds is normally closed
Contact is connected, Ko normally opened contact is closed, and is pressed QA switch electric lock and is obtained electric opening, opens cabinet door；When there is high pressure relay Ka,
Kb, Kc are electricly any, and relay Kds obtains its electric normally-closed contact and opens, and electric lock DS must not be electric, and realization has electric locking to open cabinet door.
(3) display unit unit is divided into A, B, C three-phase, and voltage sensor secondary voltage about 25V when high voltage bus 10KV leads to
Indicator light and current-limiting resistance composition load circuit are crossed, realization has electroluminescence instruction.
(4) testing position is switched to when resistance to pressure switching unit pressure resistance, is otherwise switched to running position.
(5) locking unit realizes that any one phase height is pressed with electric locking cabinet door, forbids opening.
Above embodiments are implemented under premised on technical solutions of the utility model, give detailed embodiment
With specific operating process, but the protection scope of the utility model is not limited to the above embodiments.Side used in above-described embodiment
Method is conventional method unless otherwise instructed.
Claims (4)
1. a kind of high voltage display device, including voltage sensor, terminal board, display unit, which is characterized in that further include resistance to
Pressure switching unit and locking unit；The secondary terminals of voltage sensor are separately connected display unit, pressure resistance switching list by terminal board
Member and locking unit；
The resistance to pressure switching unit includes change-over switch SA, pressure resistance switching indicator light LD, run indicator HD and switching relay
Device K1；Change-over switch SA include operation end and test end, change-over switch SA test end connection switching relay K1 coil and
The operation end of pressure resistance switching indicator light LD, change-over switch SA connect run indicator HD；Switch three normally opened touchings of relay K1
Point is connected between three secondary terminals Ua, Ub, Uc of voltage sensor and power ground；
The locking unit includes split-phase relay Ka, Kb and Kc, locking relay Ksd, power monitoring relay Ko, button
QA and electric lock DS, the coil of three split-phase relays Ka, Kb and Kc are connected to three secondary terminals Ua, Ub, Uc of voltage sensor
Between power ground；The coil of locking relay Ksd is connected after the normally opened contact of three split-phase relays Ka, Kb and Kc are in parallel；
The prescribing of the normally-closed contact of locking relay Ksd and the normally opened contact of power monitoring relay Ko and button QA connect after with electric lock
The coil of DS is connected.
2. a kind of high voltage display device according to claim 1, which is characterized in that the electricity in the locking unit
The coil of source supervisory relay Ko is connected between the positive and negative electrode of control power supply.
3. a kind of high voltage display device according to claim 1, which is characterized in that the display unit includes referring to
Show that lamp La, Lb, Lc and resistance R1, R2, R3, indicator light La and resistance R1 are connected in series in voltage sensor secondary terminals Ua and power supply
Between ground, indicator light Lb and resistance R2 are connected in series between voltage sensor secondary terminals Ub and power ground, indicator light Lc and electricity
Resistance R3 is connected in series between voltage sensor secondary terminals Uc and power ground.
4. a kind of high voltage display device according to claim 1, which is characterized in that the voltage sensor includes
Three, primary end is separately connected high voltage power supply A, B, C-terminal, and secondary terminals export Ua, Ub, Uc respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821641308.4U CN209028169U (en) | 2018-10-10 | 2018-10-10 | A kind of high voltage display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821641308.4U CN209028169U (en) | 2018-10-10 | 2018-10-10 | A kind of high voltage display device |
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| Publication Number | Publication Date |
|---|---|
| CN209028169U true CN209028169U (en) | 2019-06-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821641308.4U Active CN209028169U (en) | 2018-10-10 | 2018-10-10 | A kind of high voltage display device |
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| Country | Link |
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| CN (1) | CN209028169U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109001603A (en) * | 2018-10-10 | 2018-12-14 | 中国三冶集团有限公司 | A kind of high voltage display device |
-
2018
- 2018-10-10 CN CN201821641308.4U patent/CN209028169U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109001603A (en) * | 2018-10-10 | 2018-12-14 | 中国三冶集团有限公司 | A kind of high voltage display device |
| CN109001603B (en) * | 2018-10-10 | 2024-02-02 | 中国三冶集团有限公司 | High-voltage electrified display device |
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