CN209119799U - A kind of automatic control device for preventing switch closing coil to be burned out - Google Patents
A kind of automatic control device for preventing switch closing coil to be burned out Download PDFInfo
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- CN209119799U CN209119799U CN201821307529.8U CN201821307529U CN209119799U CN 209119799 U CN209119799 U CN 209119799U CN 201821307529 U CN201821307529 U CN 201821307529U CN 209119799 U CN209119799 U CN 209119799U
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- coil
- closing
- closing coil
- automatic control
- burned out
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Abstract
The utility model provides a kind of automatic control device for preventing switch closing coil to be burned out, including the main fuse being connected with electrical equipment, closing coil, the switch knob being connected with main fuse, and opening coil, opening button, it is characterized in that closing coil one end is connected with time relay contact and intermediate relay contact, switch knob is connected with intermediate relay coil in parallel and time relay coil, and intermediate relay coil is connected with time relay contact.After pressing switch knob; intermediate relay coil, time relay coil obtain electric simultaneously; intermediate relay junction closure makes closing coil be powered; the combined floodgate for completing switch disconnects after the time as defined in the delay of time relay contact automatically to power supply for electrical equipment; closing coil power-off; switch keeps "on" position, and to power supply for electrical equipment, effective protection closing coil is not burned out.
Description
Technical field
The utility model relates to a kind of automatic control device, especially a kind of to prevent switch closing coil to be burned out automatic
Control device belongs to technical field of electronic control.
Background technique
The breaker used in actual production is mostly vacuum circuit breaker, and existing vacuum circuit breaker includes switch, control
Make the controller of switch combined floodgate.Due to the circuit design Shortcomings of existing controller, often can vacuum circuit breaker combined floodgate after,
Controller cannot be disconnected in time, cause the closing coil of controller to be in energized state for a long time and be easy to be burned out, Jin Erying
The shutting-brake control again of vacuum circuit breaker is rung, it is final to influence normal production.The analysis showed that the original for causing closing coil to be burned out
Because in terms of having a following two: 1), the cable of controller interlocking it is longer, can often cause control loop short-circuit, easily because closing when combined floodgate
Brake current is big and burns coil；2), due to there are card resistance, causing when switching combined floodgate, because auxiliary contact cannot disconnect in time, and
Keep closing coil long charged and burns.Therefore, it is necessary to be improved the prior art.
Summary of the invention
For avoid switch close a floodgate after, can (such as 3-5 second) at the appointed time disconnection closing coil circuit, make closing coil break
For electricity without being burned out, the utility model provides a kind of automatic control device for preventing breaker closing coil to be burned out.
The utility model is completed by following technical proposal: a kind of automatic control for preventing breaker closing coil to be burned out
Device, including the main fuse being connected with electrical equipment, the closing coil being connected with main fuse, switch knob, and
Opening coil, opening button, it is characterised in that closing coil one end is connected with time relay contact and intermediate relay contact,
Switch knob is connected with intermediate relay coil in parallel and time relay coil, intermediate relay coil and the time relay
Contact is connected, and after starting switch knob, makes intermediate relay coil, time relay coil while obtaining electric, intermediate relay
Device junction closure makes closing coil be powered, complete switch combined floodgate, to power supply for electrical equipment, time relay coil obtain it is electric after,
The automatic disconnection afterwards of time (such as 3-5 seconds) as defined in the delay of time relay contact, makes intermediate relay coil losing electricity, intermediate relay
Device contact disconnects, and finally makes closing coil power-off without being burned out, and switchs and be always maintained at "on" position, and then electricity consumption is kept to set
Standby power supply state.
The switch knob includes the closing by hand button at scene, long-range closing by hand button, long-range automatic control
Switch knob closes a floodgate to complete execute-in-place as needed, or remote operation is closed a floodgate, but either execute-in-place closes a floodgate also
It is that remote operation combined floodgate all will disconnect automatically closing coil circuit by the time relay after combined floodgate in the defined time, makes to close
Lock coil blackout is without being burned out.
The opening button includes the manual brake separating button at scene, long-range manual brake separating button, long-range automatic control
Opening button, to complete execute-in-place separating brake, or remote operation separating brake, break according to the requirement out of service of electrical equipment
The power supply of electrical equipment is opened, that is, can be used electric equipment out of service.
The utility model has following advantages and effect: by adopting the above technical scheme, it is convenient to press switch knob
Afterwards, make intermediate relay coil, time relay coil at the same it is electric, intermediate relay junction closure makes closing coil be powered,
Complete switch combined floodgate, to power supply for electrical equipment, time relay coil obtain it is electric after, the time relay contact delay as defined in when
Between (such as 3-5 seconds) is automatic afterwards disconnects, make intermediate relay coil losing electricity, intermediate relay contact disconnects, and finally makes closing coil
Power-off switchs without being burned out and is always maintained at "on" position, and then keep the power supply state of electrical equipment.Fundamentally solve
Because switching current is excessive causes Burnout of Closing Coil the problem of, effective protection closing coil ensures normal production.
Detailed description of the invention
Fig. 1 is the circuit diagram of the utility model.
Specific embodiment
The utility model is described further with reference to the accompanying drawing.
The automatic control device provided by the utility model for preventing breaker closing coil to be burned out, including with electrical equipment
Positive and negative electrode connected main fuse FU1, FU2, closing coil HQ, the switch knob being connected with main fuse FU1, FU2,
And opening coil TQ, opening button, it is characterised in that the left end closing coil HQ is connected with time relay contact KT2 and centre
Relay tip KJ, switch knob are connected with intermediate relay coil KJ in parallel and time relay coil KT, intermediate relay
Device coil KJ is connected with time relay contact KT1；The switch knob includes the closing by hand button SSE, long-range at scene
Closing by hand button SC, long-range automatic control switch knob KA2 close a floodgate to complete execute-in-place as needed, Huo Zheyuan
Journey operation is closed a floodgate, but either execute-in-place closes a floodgate or remote operation is closed a floodgate will all be advised after combined floodgate by time relay KT
Automatically the circuit closing coil HQ is disconnected in the fixed time, makes closing coil HQ power-off without being burned out；The opening button includes
Manual brake separating button ST1, the long-range manual brake separating button ST, long-range automatic control opening button KA3 at scene.
When work, starting closing by hand button SSE in scene perhaps remotely starts closing by hand button SC or remotely opens
It is dynamic to automatically control switch knob KA2, make intermediate relay coil KJ, time relay coil KT while obtaining electric, intermediate relay
Contact KJ closure makes closing coil HQ be powered, and completes the combined floodgate of switch, to power supply for electrical equipment, time relay coil KT obtains electric
Afterwards, the automatic disconnection afterwards of time (such as 3-5 seconds) as defined in time relay contact KT1, KT2 delay, makes intermediate relay coil KJ
Power loss, intermediate relay contact KJ are disconnected, and finally make closing coil HQ power-off without being burned out, and are switched and be always maintained at combined floodgate shape
State, and then keep the power supply state of electrical equipment.
When electrical equipment needs out of service, start the manual brake separating button ST1 at scene, or start remotely manual
Opening button ST perhaps starts long-range automatic control opening button KA3 and completes execute-in-place separating brake or remote operation point
Lock disconnects the power supply of electrical equipment, that is, can be used electric equipment out of service.
Claims (3)
1. a kind of automatic control device for preventing switch closing coil to be burned out, including the power supply fusing being connected with electrical equipment
Device, the closing coil being connected with main fuse, switch knob and opening coil, opening button, it is characterised in that closing line
Circle one end is connected with time relay contact and intermediate relay contact, switch knob and intermediate relay coil in parallel and when
Between relay coil be connected, intermediate relay coil is connected with time relay contact.
2. the automatic control device according to claim 1 for preventing switch closing coil to be burned out, it is characterised in that described
Switch knob includes the closing by hand button at scene, long-range closing by hand button, long-range automatic control switch knob.
3. the automatic control device according to claim 1 for preventing switch closing coil to be burned out, it is characterised in that described
Opening button includes the manual brake separating button at scene, long-range manual brake separating button, long-range automatic control opening button.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821307529.8U CN209119799U (en) | 2018-08-11 | 2018-08-11 | A kind of automatic control device for preventing switch closing coil to be burned out |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821307529.8U CN209119799U (en) | 2018-08-11 | 2018-08-11 | A kind of automatic control device for preventing switch closing coil to be burned out |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209119799U true CN209119799U (en) | 2019-07-16 |
Family
ID=67196984
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821307529.8U Active CN209119799U (en) | 2018-08-11 | 2018-08-11 | A kind of automatic control device for preventing switch closing coil to be burned out |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209119799U (en) |
-
2018
- 2018-08-11 CN CN201821307529.8U patent/CN209119799U/en active Active
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