CN105244220A - Power switch device - Google Patents
Power switch device Download PDFInfo
- Publication number
- CN105244220A CN105244220A CN201510763196.4A CN201510763196A CN105244220A CN 105244220 A CN105244220 A CN 105244220A CN 201510763196 A CN201510763196 A CN 201510763196A CN 105244220 A CN105244220 A CN 105244220A
- Authority
- CN
- China
- Prior art keywords
- parts
- power switch
- shell
- microprocessor
- electric power
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- 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
-
- 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
- H01H33/662—Housings or protective screens
- H01H33/66207—Specific housing details, e.g. sealing, soldering or brazing
-
- 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
- H01H33/662—Housings or protective screens
- H01H33/66207—Specific housing details, e.g. sealing, soldering or brazing
- H01H2033/6623—Details relating to the encasing or the outside layers of the vacuum switch housings
Landscapes
- Thermally Actuated Switches (AREA)
- Fuses (AREA)
Abstract
The invention discloses a power switch device, which comprises an outer shell, a moving contact and a static contact, wherein the moving contact and the static contact are arranged on the outer shell, a vacuum chamber, a microprocessor, a condenser and a temperature sensor are arranged inside the shell body, the microprocessor is respectively connected with the condenser and the temperature sensor, one end of each of the moving contact and the static contact is placed in the vacuum chamber, an alarm device is arranged on the outer shell, the alarm device is connected with the microprocessor, a fuse wire is arranged on the static contact, a base, a spring and a fixing ring are arranged on the moving contact, the base, the spring and the fixing ring are connected in sequence, and the base is attached to and connected with the outer shell. The power switch device is simple in design and high in safety, and can extinguish arc efficiently.
Description
Technical field
The present invention relates to a kind of electric power switch apparatus.
Background technology
The power switchgear used in prior art is mostly as being used alone, direct in circuit power switchgear to be connected with other kinds components and parts, but power switch easily produces electric arc in use, electric current especially by switch is larger, the arc energy produced is larger, be easy to occur short circuit phenomenon, the use safety that have impact on people to a great extent.And be just easy to produce a large amount of heat by electric current, voltage at power switch long term overloading, switch housing is very easily made to occur the possibility of spontaneous combustion, if and at this moment do not have staff to find the service condition that switch produces, be just easy to initiation fire, make people cause great economic loss.
Electric power switch apparatus is the control assembly of power industry outbalance, is one and can makes open circuit, makes current interruptions or make it flow to the electronic component of other circuit, generally comprise contact system, arc-control device and wrench device.Switch, when opening or cut out, can make air ionization, produces electric arc, and cause damage to switch and surrounding, therefore the validity of switch arc-control device is the critical component addressed this problem.Under vacuum condition, rarefaction of air, the probability that gas particle ionizes because of collision is little, and therefore vacuum has well insulation and arc extinction performance.In existing technology, vacuum switch only can reach control circuit effect, and can not available protecting circuit, acts on very limited.
Summary of the invention
It is high and can the electric power switch apparatus of efficient arc extinguishing that the technical problem to be solved in the present invention is to provide a kind of simplicity of design, fail safe.
For solving the problems of the technologies described above, the present invention adopts following technical scheme:
A kind of electric power switch apparatus, includes shell, moving contact and fixed contact, described moving contact and fixed contact are all arranged on shell, and described enclosure is provided with vacuum chamber, microprocessor, condenser and temperature detector, described microprocessor is connected with condenser and temperature detector respectively, one end of described moving contact and fixed contact is positioned at vacuum chamber, described shell is provided with warning device, described warning device is connected with microprocessor, described fixed contact is provided with fusible link, described moving contact is provided with pedestal, spring and retainer ring, described pedestal, spring is connected successively with retainer ring, and described pedestal is affixed with shell and is connected, described shell by proportioning by weight kaolin 28 ?30 parts, aluminium hydroxide 26 ?28 parts, barium sulfate 24 ?28 parts, calcium silicates 22 ?26 parts, polyethylene glycol 20 ?24 parts, polyurethane 18 ?20 parts, ethanedioic acid polyester 20 ?22 parts, sodium phosphate trimer 12 ?18 parts, butyl rubber 24 ?26 parts, TDE 12 ?18 parts, polyimides 14 ?18 parts, antimony oxide 16 ?20 parts, fluorocarbon resin 14 ?16 parts, chloroplatinic acid 10 ?12 parts and zinc 16 ?20 parts make.
Further, described case surface is provided with insulating barrier, improves the insulation effect of derailing switch, improves fail safe.
Further, described enclosure is provided with heat abstractor, improves the heat dispersion of derailing switch.
Further, described temperature detector is provided with wireless senser, realizes carrying out remote monitoring derailing switch situation.
Further, described microprocessor is provided with thermal isolation film, prevents the too high microprocessor that affects of derailing switch temperature from normally working.
Further, described enclosure is provided with heat absorbing sheet, improves the heat dispersion of derailing switch.
The manufacture method of shell, includes following steps:
1) get kaolin 28 ?30 parts send in calciners, calcining heat is raised to 900 DEG C gradually from 800 DEG C, and heating rate is 10 DEG C/min, then at 900 DEG C, calcines 2 hours again, is incubated 1 hour, natural cooling discharging;
2) by step 1) in the raw material that obtains send into airslide disintegrating mill, obtained average grain diameter is at the powder of below 300nm, for subsequent use;
3) get aluminium hydroxide 26 ?28 parts, barium sulfate 24 ?28 parts, calcium silicates 22 ?26 parts and polyethylene glycol 20 ?24 parts put into mixer, stir;
4) by step 3) in the material that stirs put into heater, temperature rise to 90 ?100 DEG C, continue 20 ?30min, for subsequent use;
5) get butyl rubber 24 ?26 parts, send in airslide disintegrating mill, make radius be 200 ?the particle of 300nm;
6) by step 5) in obtained material put into mixer, add polyurethane 18 ?20 parts, ethanedioic acid polyester 20 ?22 parts, sodium phosphate trimer 12 ?18 parts, TDE 12 ?18 parts and polyimides 14 ?18 parts, stir, for subsequent use;
7) by step 2), step 4) and step 6) in obtained material put into melting furnace, add antimony oxide 16 ?20 parts, fluorocarbon resin 14 ?16 parts, chloroplatinic acid 10 ?12 parts and zinc 16 ?20 parts, temperature rise to 800 ?900 DEG C, continue 2 ?3 hours, obtained fused mass;
8) by step 7) in obtained fused mass inject mould, maintenance three days, can obtain shell of the present invention.
Beneficial effect of the present invention is: this electric power switch apparatus simplicity of design, and portion is provided with vacuum chamber in the enclosure, under vacuum can effective arc extinguishing; Fixed contact is provided with fusible link, can open circuit in time when temperature is too high; By being provided with pedestal, spring and retainer ring on moving contact, moving contact can being realized and disconnect fast; By being equipped with of microprocessor, condenser, temperature detector and warning device, the automatic temperature sensor of temperature detector, microprocessor is responsible for Received signal strength and is sent signal, and then controls the operation of condenser and warning device, improves fail safe.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of electric power switch apparatus of the present invention.
Embodiment
Embodiment one:
Consult shown in Fig. 1, a kind of electric power switch apparatus, include shell 1, moving contact 2 and fixed contact 3, described moving contact 2 and fixed contact 3 are all arranged on shell 1, and described shell 1 inside is provided with vacuum chamber 8, microprocessor 9, condenser 11 and temperature detector 12, described microprocessor 9 is connected with condenser 11 and temperature detector 12 respectively, one end of described moving contact 2 and fixed contact 3 is positioned at vacuum chamber 8, described shell 1 is provided with warning device 13, described warning device 13 is connected with microprocessor 9, described fixed contact 3 is provided with fusible link 4, described moving contact 2 is provided with pedestal 5, spring 6 and retainer ring 7, described pedestal 5, spring 6 is connected successively with retainer ring 7, and described pedestal 5 is affixed with shell 1 and is connected, and described shell 1 is by the kaolin 28 parts of proportioning by weight, 28 parts, aluminium hydroxide, 28 parts, barium sulfate, calcium silicates 26 parts, polyethylene glycol 24 parts, polyurethane 20 parts, ethanedioic acid polyester 22 parts, sodium phosphate trimer 18 parts, butyl rubber 26 parts, TDE 18 parts, polyimides 18 parts, antimony oxide 20 parts, fluorocarbon resin 16 parts, chloroplatinic acid 12 parts and zinc 20 parts are made.
Described shell 1 surface is provided with insulating barrier (not shown), improves the insulation effect of derailing switch, improves fail safe.
Described shell 1 inside is provided with heat abstractor 14, improves the heat dispersion of derailing switch.
Described temperature detector 12 is provided with wireless senser 15, realizes carrying out remote monitoring derailing switch situation.
Described microprocessor 9 is provided with thermal isolation film 10, prevents the too high microprocessor 9 that affects of derailing switch temperature from normally working.
Described shell 1 inside is provided with heat absorbing sheet 16, improves the heat dispersion of derailing switch.
The manufacture method of shell 1, includes following steps:
1) get kaolin 28 parts to send in calciner, calcining heat is raised to 900 DEG C gradually from 800 DEG C, and heating rate is 10 DEG C/min, then at 900 DEG C, calcines 2 hours again, is incubated 1 hour, natural cooling discharging;
2) by step 1) in the raw material that obtains send into airslide disintegrating mill, obtained average grain diameter is at the powder of below 300nm, for subsequent use;
3) get 28 parts, aluminium hydroxide, 28 parts, barium sulfate, calcium silicates 26 parts and polyethylene glycol 24 parts and put into mixer, stir;
4) by step 3) in the material that stirs put into heater, temperature rise to 90 ?100 DEG C, continue 20 ?30min, for subsequent use;
5) get butyl rubber 26 parts, send in airslide disintegrating mill, make radius be 200 ?the particle of 300nm;
6) by step 5) in obtained material put into mixer, add polyurethane 20 parts, ethanedioic acid polyester 22 parts, sodium phosphate trimer 18 parts, TDE 18 parts and polyimides 18 parts, stir, for subsequent use;
7) by step 2), step 4) and step 6) in obtained material put into melting furnace, add antimony oxide 20 parts, fluorocarbon resin 16 parts, chloroplatinic acid 12 parts and zinc 20 parts, temperature rise to 800 ?900 DEG C, continue 2 ?3 hours, obtained fused mass;
8) by step 7) in obtained fused mass inject mould, maintenance three days, can obtain shell 1 of the present invention.
Embodiment two:
Consult shown in Fig. 1, a kind of electric power switch apparatus, include shell 1, moving contact 2 and fixed contact 3, described moving contact 2 and fixed contact 3 are all arranged on shell 1, and described shell 1 inside is provided with vacuum chamber 8, microprocessor 9, condenser 11 and temperature detector 12, described microprocessor 9 is connected with condenser 11 and temperature detector 12 respectively, one end of described moving contact 2 and fixed contact 3 is positioned at vacuum chamber 8, described shell 1 is provided with warning device 13, described warning device 13 is connected with microprocessor 9, described fixed contact 3 is provided with fusible link 4, described moving contact 2 is provided with pedestal 5, spring 6 and retainer ring 7, described pedestal 5, spring 6 is connected successively with retainer ring 7, and described pedestal 5 is affixed with shell 1 and is connected, and described shell 1 is by the kaolin 29 parts of proportioning by weight, 27 parts, aluminium hydroxide, 26 parts, barium sulfate, calcium silicates 24 parts, polyethylene glycol 22 parts, polyurethane 19 parts, ethanedioic acid polyester 21 parts, sodium phosphate trimer 15 parts, butyl rubber 25 parts, TDE 15 parts, polyimides 16 parts, antimony oxide 18 parts, fluorocarbon resin 15 parts, chloroplatinic acid 11 parts and zinc 18 parts are made.
Described shell 1 surface is provided with insulating barrier (not shown), improves the insulation effect of derailing switch, improves fail safe.
Described shell 1 inside is provided with heat abstractor 14, improves the heat dispersion of derailing switch.
Described temperature detector 12 is provided with wireless senser 15, realizes carrying out remote monitoring derailing switch situation.
Described microprocessor 9 is provided with thermal isolation film 10, prevents the too high microprocessor 9 that affects of derailing switch temperature from normally working.
Described shell 1 inside is provided with heat absorbing sheet 16, improves the heat dispersion of derailing switch.
The manufacture method of shell 1, includes following steps:
1) get kaolin 29 parts to send in calciner, calcining heat is raised to 900 DEG C gradually from 800 DEG C, and heating rate is 10 DEG C/min, then at 900 DEG C, calcines 2 hours again, is incubated 1 hour, natural cooling discharging;
2) by step 1) in the raw material that obtains send into airslide disintegrating mill, obtained average grain diameter is at the powder of below 300nm, for subsequent use;
3) get 27 parts, aluminium hydroxide, 26 parts, barium sulfate, calcium silicates 24 parts and polyethylene glycol 22 parts and put into mixer, stir;
4) by step 3) in the material that stirs put into heater, temperature rise to 90 ?100 DEG C, continue 20 ?30min, for subsequent use;
5) get butyl rubber 25 parts, send in airslide disintegrating mill, make radius be 200 ?the particle of 300nm;
6) by step 5) in obtained material put into mixer, add polyurethane 19 parts, ethanedioic acid polyester 21 parts, sodium phosphate trimer 15 parts, TDE 15 parts and polyimides 16 parts, stir, for subsequent use;
7) by step 2), step 4) and step 6) in obtained material put into melting furnace, add antimony oxide 18 parts, fluorocarbon resin 15 parts, chloroplatinic acid 11 parts and zinc 18 parts, temperature rise to 800 ?900 DEG C, continue 2 ?3 hours, obtained fused mass;
8) by step 7) in obtained fused mass inject mould, maintenance three days, can obtain shell 1 of the present invention.
Embodiment three:
Consult shown in Fig. 1, a kind of electric power switch apparatus, include shell 1, moving contact 2 and fixed contact 3, described moving contact 2 and fixed contact 3 are all arranged on shell 1, and described shell 1 inside is provided with vacuum chamber 8, microprocessor 9, condenser 11 and temperature detector 12, described microprocessor 9 is connected with condenser 11 and temperature detector 12 respectively, one end of described moving contact 2 and fixed contact 3 is positioned at vacuum chamber 8, described shell 1 is provided with warning device 13, described warning device 13 is connected with microprocessor 9, described fixed contact 3 is provided with fusible link 4, described moving contact 2 is provided with pedestal 5, spring 6 and retainer ring 7, described pedestal 5, spring 6 is connected successively with retainer ring 7, and described pedestal 5 is affixed with shell 1 and is connected, and described shell 1 is by the kaolin 30 parts of proportioning by weight, 26 parts, aluminium hydroxide, 24 parts, barium sulfate, calcium silicates 22 parts, polyethylene glycol 20 parts, polyurethane 18 parts, ethanedioic acid polyester 20 parts, sodium phosphate trimer 12 parts, butyl rubber 24 parts, TDE 12 parts, polyimides 14 parts, antimony oxide 16 parts, fluorocarbon resin 14 parts, chloroplatinic acid 10 parts and zinc 16 parts are made.
Described shell 1 surface is provided with insulating barrier (not shown), improves the insulation effect of derailing switch, improves fail safe.
Described shell 1 inside is provided with heat abstractor 14, improves the heat dispersion of derailing switch.
Described temperature detector 12 is provided with wireless senser 15, realizes carrying out remote monitoring derailing switch situation.
Described microprocessor 9 is provided with thermal isolation film 10, prevents the too high microprocessor 9 that affects of derailing switch temperature from normally working.
Described shell 1 inside is provided with heat absorbing sheet 16, improves the heat dispersion of derailing switch.
The manufacture method of shell 1, includes following steps:
1) get kaolin 30 parts to send in calciner, calcining heat is raised to 900 DEG C gradually from 800 DEG C, and heating rate is 10 DEG C/min, then at 900 DEG C, calcines 2 hours again, is incubated 1 hour, natural cooling discharging;
2) by step 1) in the raw material that obtains send into airslide disintegrating mill, obtained average grain diameter is at the powder of below 300nm, for subsequent use;
3) get 26 parts, aluminium hydroxide, 24 parts, barium sulfate, calcium silicates 22 parts and polyethylene glycol 20 parts and put into mixer, stir;
4) by step 3) in the material that stirs put into heater, temperature rise to 90 ?100 DEG C, continue 20 ?30min, for subsequent use;
5) get butyl rubber 24 parts, send in airslide disintegrating mill, make radius be 200 ?the particle of 300nm;
6) by step 5) in obtained material put into mixer, add polyurethane 18 parts, ethanedioic acid polyester 20 parts, sodium phosphate trimer 12 parts, TDE 12 parts and polyimides 14 parts, stir, for subsequent use;
7) by step 2), step 4) and step 6) in obtained material put into melting furnace, add antimony oxide 16 parts, fluorocarbon resin 14 parts, chloroplatinic acid 10 parts and zinc 16 parts, temperature rise to 800 ?900 DEG C, continue 2 ?3 hours, obtained fused mass;
8) by step 7) in obtained fused mass inject mould, maintenance three days, can obtain shell 1 of the present invention.
Experimental example:
20 common electric power switch apparatus are divided into control group 1 and control group 2 by often organizing 10 by experimental subjects: select 10 electric power switch apparatus of the present invention and 20 common electric power switch apparatus, 10 electric power switch apparatus of the present invention are divided into experimental group.
Experimental technique: three groups of electric power switch apparatus are loaded 220V circuit, uses six months.
Experimental result sees the following form:
As can be seen here, electric power switch apparatus of the present invention can protective circuit effectively, compared with common electric power switch apparatus, performance has significant progress.
Beneficial effect of the present invention is: this electric power switch apparatus simplicity of design, and portion is provided with vacuum chamber in the enclosure, under vacuum can effective arc extinguishing; Fixed contact is provided with fusible link, can open circuit in time when temperature is too high; By being provided with pedestal, spring and retainer ring on moving contact, moving contact can being realized and disconnect fast; By being equipped with of microprocessor, condenser, temperature detector and warning device, the automatic temperature sensor of temperature detector, microprocessor is responsible for Received signal strength and is sent signal, and then controls the operation of condenser and warning device, improves fail safe.
The above, be only the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, and any change of expecting without creative work or replacement, all should be encompassed in protection scope of the present invention.
Claims (6)
1. an electric power switch apparatus, is characterized in that: include shell, moving contact and fixed contact, described moving contact and fixed contact are all arranged on shell, and described enclosure is provided with vacuum chamber, microprocessor, condenser and temperature detector, described microprocessor is connected with condenser and temperature detector respectively, one end of described moving contact and fixed contact is positioned at vacuum chamber, described shell is provided with warning device, described warning device is connected with microprocessor, described fixed contact is provided with fusible link, described moving contact is provided with pedestal, spring and retainer ring, described pedestal, spring is connected successively with retainer ring, and described pedestal is affixed with shell and is connected, described shell by proportioning by weight kaolin 28 ?30 parts, aluminium hydroxide 26 ?28 parts, barium sulfate 24 ?28 parts, calcium silicates 22 ?26 parts, polyethylene glycol 20 ?24 parts, polyurethane 18 ?20 parts, ethanedioic acid polyester 20 ?22 parts, sodium phosphate trimer 12 ?18 parts, butyl rubber 24 ?26 parts, TDE 12 ?18 parts, polyimides 14 ?18 parts, antimony oxide 16 ?20 parts, fluorocarbon resin 14 ?16 parts, chloroplatinic acid 10 ?12 parts and zinc 16 ?20 parts make.
2. electric power switch apparatus according to claim 2, is characterized in that: described case surface is provided with insulating barrier.
3. electric power switch apparatus according to claim 3, is characterized in that: described enclosure is provided with heat abstractor.
4. electric power switch apparatus according to claim 4, is characterized in that: described temperature detector is provided with wireless senser.
5. electric power switch apparatus according to claim 5, is characterized in that: described microprocessor is provided with thermal isolation film.
6. electric power switch apparatus according to claim 6, is characterized in that: described enclosure is provided with heat absorbing sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510763196.4A CN105244220A (en) | 2015-11-10 | 2015-11-10 | Power switch device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510763196.4A CN105244220A (en) | 2015-11-10 | 2015-11-10 | Power switch device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105244220A true CN105244220A (en) | 2016-01-13 |
Family
ID=55041821
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510763196.4A Pending CN105244220A (en) | 2015-11-10 | 2015-11-10 | Power switch device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105244220A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105845490A (en) * | 2016-06-09 | 2016-08-10 | 福建省三星电气股份有限公司 | Vacuum circuit breaker and preparation method thereof |
| CN106208109A (en) * | 2016-08-31 | 2016-12-07 | 苏州菲斯特电力科技有限公司 | Power equipment hv filtering compensates complexes |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3783212A (en) * | 1971-07-28 | 1974-01-01 | Ite Imperial Corp | Contacts for use in vacuum switch arrangements |
| CN103730287A (en) * | 2013-12-20 | 2014-04-16 | 吴江市东泰电力特种开关有限公司 | Vacuum power switch |
| CN103985577A (en) * | 2014-05-23 | 2014-08-13 | 国家电网公司 | Portable power switchgear |
| CN203931923U (en) * | 2014-06-28 | 2014-11-05 | 国家电网公司 | A kind of power switch |
| CN204332815U (en) * | 2014-10-31 | 2015-05-13 | 长沙电力设备有限公司 | A kind of vacuum tightness protection of electrical switch |
| CN204375605U (en) * | 2015-01-23 | 2015-06-03 | 国网河南省电力公司驻马店供电公司 | A kind of efficient arc extinguishing power switch with heat sinking function |
-
2015
- 2015-11-10 CN CN201510763196.4A patent/CN105244220A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3783212A (en) * | 1971-07-28 | 1974-01-01 | Ite Imperial Corp | Contacts for use in vacuum switch arrangements |
| CN103730287A (en) * | 2013-12-20 | 2014-04-16 | 吴江市东泰电力特种开关有限公司 | Vacuum power switch |
| CN103985577A (en) * | 2014-05-23 | 2014-08-13 | 国家电网公司 | Portable power switchgear |
| CN203931923U (en) * | 2014-06-28 | 2014-11-05 | 国家电网公司 | A kind of power switch |
| CN204332815U (en) * | 2014-10-31 | 2015-05-13 | 长沙电力设备有限公司 | A kind of vacuum tightness protection of electrical switch |
| CN204375605U (en) * | 2015-01-23 | 2015-06-03 | 国网河南省电力公司驻马店供电公司 | A kind of efficient arc extinguishing power switch with heat sinking function |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105845490A (en) * | 2016-06-09 | 2016-08-10 | 福建省三星电气股份有限公司 | Vacuum circuit breaker and preparation method thereof |
| CN106208109A (en) * | 2016-08-31 | 2016-12-07 | 苏州菲斯特电力科技有限公司 | Power equipment hv filtering compensates complexes |
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| PB01 | Publication | ||
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Application publication date: 20160113 |