CN105428143A - Low-voltage vacuum contactor suitable for voltage of 660V or above and operating method - Google Patents
Low-voltage vacuum contactor suitable for voltage of 660V or above and operating method Download PDFInfo
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- CN105428143A CN105428143A CN201510823108.5A CN201510823108A CN105428143A CN 105428143 A CN105428143 A CN 105428143A CN 201510823108 A CN201510823108 A CN 201510823108A CN 105428143 A CN105428143 A CN 105428143A
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- Prior art keywords
- copper bar
- voltage
- low
- vacuum contactor
- contact
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/6606—Terminal arrangements
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- High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
The present invention discloses a low-voltage vacuum contactor suitable for a voltage of 660V or above and an operating method. A vacuum arc quenching chamber of the vacuum contactor has high process requirements during manufacturing, and if a process is poor, a vacuum degree of the vacuum arc quenching chamber is easy to decrease; and if a contact material is poor, a 'current cut-off overvoltage' phenomenon can occur during current breaking. The low-voltage vacuum contactor suitable for the voltage of 660V or above comprises an insulating plate (1), wherein the insides of both ends of the insulating plate are separately connected with an upper lead-out copper bar (6) and a lower lead-out copper bar (7); the upper lead-out copper bar (6) is connected with a glass shell (2) through a stationary contact rod (10); the lower part of the glass shell is connected with a movable contact rod (11); the movable contact rod is connected with a contact spring (9); the contact spring is connected with an insulating member (8); and the lower lead-out copper bar is connected with a copper wire (16). The low-voltage vacuum contactor is used as a power switch in loads such as an electric arc furnace, a high-voltage motor and the like.
Description
technical field:
the present invention relates to a kind of the low-voltage vacuum contactor and the method for work that are applicable to more than 660 volts.
background technology:
when the vacuum interrupter of vacuum contactor manufactures, technological requirement is very high, if technique is bad, the vacuum degree of arc control device easily declines; Contact material material is bad, there will be " cut-off overvoltage " phenomenon, when breaking current namely when breaking current, because the arc-rupturing capacity of vacuum interrupter is very strong, arc current cuts off when not being natural zero-crossing, but drops to zero suddenly from a certain value of electric current, occurs high overvoltage therefrom.The safe operation of cut-off overvoltage entail dangers to electrical equipment.
summary of the invention:
the object of this invention is to provide a kind of the low-voltage vacuum contactor and the method for work that are applicable to more than 660 volts.
above-mentioned object is realized by following technical scheme:
be applicable to the low-voltage vacuum contactor of more than 660 volts, its composition comprises: insulation board
be connected with upper extraction copper bar and lower extraction copper bar respectively inside the two ends of described insulation board, described upper extraction copper bar is connected with glass shell by stationary contact bar, the bottom of described glass shell is connected with movable feeler lever, described movable feeler lever is connected with touch spring, described touch spring is connected with insulating part, and described lower extraction copper bar is connected with copper conductor.
the described low-voltage vacuum contactor being applicable to more than 660 volts, described insulating part is connected with connecting rod, and described connecting rod is connected with tripping spring and making electromagnet respectively.
the described low-voltage vacuum contactor being applicable to more than 660 volts, described glass shell has moving contact and fixed contact, described moving contact is connected with described movable feeler lever, described fixed contact is connected with described stationary contact bar, described movable feeler lever has radome, described fixed contact has bellows.
the method of work being applicable to the low-voltage vacuum contactor of more than 660 volts that one of a kind of claim 1-4 is described, the method comprises the steps:
vacuum interrupter is vertically mounted on insulating barrier, and indoor top is fixed contact, bottom is moving contact.Upper stationary contact bar copper bar is drawn, and lower movable feeler lever flexible conductor causes copper bar exit.Moving contact is connected with lever with insulator by conducting rod, touch spring.Under the effect of tripping spring power, lever rotates to counter-clockwise direction, and it drives moving contact to move downward, and quiet, moving contact is separated.During combined floodgate, by making electromagnet coil electricity, armature is adhesive to the right, and lever clockwise direction rotates, and by insulator, touch spring, moving contact is moved upward, and closes with fixed contact.
beneficial effect of the present invention:
1. the shell useable glass of vacuum interrupter of the present invention or ceramic insulating material are made, and inner vacuum degree is usually more than 10 handkerchiefs.Due to the little air in shell, clearance between open contacts can do very little, and electric arc is also easier to be extinguished.Contact material is generally made with alloys such as copper, antimony, bismuths.
the effect of arc control device inner shield of the present invention is, when breaking current, the metal vapors diffused out in condensation contact gap, contributes to blow-out, can also prevent metal vapors from splashing on insulation crust and reduce its dielectric strength.Moving contact is connected with shell lower end bellows, and moving contact can move up and down and can not leak gas.
vacuum contactor arc-rupturing capacity of the present invention is strong, good pressure-resistant performance, frequency of operation compared with high, the life-span is grown, spray outward without electric arc, volume is little, lightweight, maintenance cycle is longer, be applicable in 660 volts and above circuit, as the place having explosion-proof, anticorrosion and fire protection requirement and environment more severe for industries such as colliery, chemical industry, metallurgy, cement.Vacuum contactor is also for making mains switch in arc furnace, motor even load.
accompanying drawing illustrates:
accompanying drawing 1 is structural representation of the present invention.
embodiment:
embodiment 1:
a kind of low-voltage vacuum contactor being applicable to more than 660 volts, its composition comprises: insulation board 1, be connected with upper extraction copper bar 6 and lower extraction copper bar 7 respectively inside the two ends of described insulation board, described upper extraction copper bar is connected with glass shell 2 by stationary contact bar 10, the bottom of described glass shell is connected with movable feeler lever 11, described movable feeler lever is connected with touch spring 9, and described touch spring is connected with insulating part 8, and described lower extraction copper bar is connected with copper conductor 16.
embodiment 2:
the low-voltage vacuum contactor being applicable to more than 660 volts according to embodiment 1, described insulating part is connected with connecting rod 3, and described connecting rod is connected with tripping spring 5 and making electromagnet 4 respectively.
embodiment 3:
the low-voltage vacuum contactor being applicable to more than 660 volts according to embodiment 1 or 2, described glass shell has moving contact 13 and fixed contact 12, described moving contact is connected with described movable feeler lever, described fixed contact is connected with described stationary contact bar, described movable feeler lever has radome 14, described fixed contact has bellows 15.
embodiment 4:
the method of work being applicable to the low-voltage vacuum contactor of more than 660 volts that one of a kind of embodiment 1-4 is described, the method comprises the steps:
vacuum interrupter is vertically mounted on insulating barrier, and indoor top is fixed contact, bottom is moving contact.Upper stationary contact bar copper bar is drawn, and lower movable feeler lever flexible conductor causes copper bar exit.Moving contact is connected with lever with insulator by conducting rod, touch spring.Under the effect of tripping spring power, lever rotates to counter-clockwise direction, and it drives moving contact to move downward, and quiet, moving contact is separated.During combined floodgate, by making electromagnet coil electricity, armature is adhesive to the right, and lever clockwise direction rotates, and by insulator, touch spring, moving contact is moved upward, and closes with fixed contact.
Claims (4)
1. one kind is applicable to the low-voltage vacuum contactor of more than 660 volts, its composition comprises: insulation board, it is characterized in that: be connected with upper extraction copper bar and lower extraction copper bar respectively inside the two ends of described insulation board, described upper extraction copper bar is connected with glass shell by stationary contact bar, the bottom of described glass shell is connected with movable feeler lever, described movable feeler lever is connected with touch spring, and described touch spring is connected with insulating part, and described lower extraction copper bar is connected with copper conductor.
2. the low-voltage vacuum contactor being applicable to more than 660 volts according to claim 1, it is characterized in that: described insulating part is connected with connecting rod, described connecting rod is connected with tripping spring and making electromagnet respectively.
3. the low-voltage vacuum contactor being applicable to more than 660 volts according to claim 1 and 2, it is characterized in that: described glass shell has moving contact and fixed contact, described moving contact is connected with described movable feeler lever, described fixed contact is connected with described stationary contact bar, described movable feeler lever has radome, described fixed contact has bellows.
4. the method for work being applicable to the low-voltage vacuum contactor of more than 660 volts that one of claim 1-4 is described, is characterized in that: the method comprises the steps:
Vacuum interrupter is vertically mounted on insulating barrier, and indoor top is fixed contact, bottom is moving contact; Upper stationary contact bar copper bar is drawn, and lower movable feeler lever flexible conductor causes copper bar exit; Moving contact is connected with lever with insulator by conducting rod, touch spring; Under the effect of tripping spring power, lever rotates to counter-clockwise direction, and it drives moving contact to move downward, and quiet, moving contact is separated; During combined floodgate, by making electromagnet coil electricity, armature is adhesive to the right, and lever clockwise direction rotates, and by insulator, touch spring, moving contact is moved upward, and closes with fixed contact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510823108.5A CN105428143A (en) | 2015-11-24 | 2015-11-24 | Low-voltage vacuum contactor suitable for voltage of 660V or above and operating method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510823108.5A CN105428143A (en) | 2015-11-24 | 2015-11-24 | Low-voltage vacuum contactor suitable for voltage of 660V or above and operating method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105428143A true CN105428143A (en) | 2016-03-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510823108.5A Pending CN105428143A (en) | 2015-11-24 | 2015-11-24 | Low-voltage vacuum contactor suitable for voltage of 660V or above and operating method |
Country Status (1)
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| CN (1) | CN105428143A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109841452A (en) * | 2017-11-28 | 2019-06-04 | 天津平高智能电气有限公司 | A kind of vacuum interrupter and its contact shielding construction |
| CN109841451A (en) * | 2017-11-28 | 2019-06-04 | 天津平高智能电气有限公司 | Vacuum interrupter and the dc bypass switch for using the arc-chutes |
| CN110112031A (en) * | 2019-04-23 | 2019-08-09 | 翁琦 | A kind of intelligent vacuum circuit breaker |
-
2015
- 2015-11-24 CN CN201510823108.5A patent/CN105428143A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109841452A (en) * | 2017-11-28 | 2019-06-04 | 天津平高智能电气有限公司 | A kind of vacuum interrupter and its contact shielding construction |
| CN109841451A (en) * | 2017-11-28 | 2019-06-04 | 天津平高智能电气有限公司 | Vacuum interrupter and the dc bypass switch for using the arc-chutes |
| CN109841452B (en) * | 2017-11-28 | 2022-08-19 | 天津平高智能电气有限公司 | Vacuum arc extinguish chamber and contact shielding structure thereof |
| CN110112031A (en) * | 2019-04-23 | 2019-08-09 | 翁琦 | A kind of intelligent vacuum circuit breaker |
| CN110112031B (en) * | 2019-04-23 | 2020-09-08 | 陕西捷通智能控制软件有限公司 | Intelligent vacuum circuit breaker |
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| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160323 |