CN106024535A - Low-voltage circuit breaker - Google Patents

Low-voltage circuit breaker Download PDF

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Publication number
CN106024535A
CN106024535A CN201610617079.1A CN201610617079A CN106024535A CN 106024535 A CN106024535 A CN 106024535A CN 201610617079 A CN201610617079 A CN 201610617079A CN 106024535 A CN106024535 A CN 106024535A
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CN
China
Prior art keywords
circuit breaker
parts
voltage circuit
housing
low
Prior art date
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Pending
Application number
CN201610617079.1A
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Chinese (zh)
Inventor
李聪
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
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Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to CN201610617079.1A priority Critical patent/CN106024535A/en
Publication of CN106024535A publication Critical patent/CN106024535A/en
Pending legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/02—Housings; Casings; Bases; Mountings
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L83/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers
    • C08L83/04—Polysiloxanes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
    • H01H73/02—Details
    • H01H73/18—Means for extinguishing or suppressing arc
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
    • C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
    • C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/14—Polymer mixtures characterised by other features containing polymeric additives characterised by shape
    • C08L2205/16—Fibres; Fibrils

Abstract

The invention discloses a low-voltage circuit breaker which comprises a shell. A pressure release and a circuit breaker body are arranged in the shell; the pressure release is located at the left end of the shell and provided with a fixed frame and an air chamber, a movable contact is arranged on the fixed frame, and the air chamber is located in the fixed frame and provided with an air pipe. The circuit breaker body is located at the right end of the shell, a cushion plate is arranged at the bottom of the circuit breaker body, an insulator is arranged above the cushion plate, a connecting end is arranged at the right end of the insulator, an arc chamber is formed in the upper end of the insulator, a coil is arranged on the outer side of the arc chamber, and an air outlet is formed in the upper right portion of the arc chamber and communicated with the arc chamber. The low-voltage circuit breaker has the advantages of being simple in structure, easy to mount, safe and reliable, and the shell of the low-voltage circuit breaker is good in insulation performance, high in strength, not likely to deform and long in service life.

Description

A kind of low-voltage circuit breaker
Technical field
Present invention relates particularly to a kind of low-voltage circuit breaker.
Background technology
Chopper can be used to distribute electric energy, infrequently starts asynchronous motor, to power circuit and motor Deng carrying out protection, electricity can be automatically cut off when they occur serious overloads or the fault such as short-circuit and under-voltage Road, its function is equivalent to Fuse switch and crosses the combination of underheat relay etc., and at disjunction fault electricity Typically need not after stream change parts, at present, obtain a wide range of applications.
Along with the continuous progress of power supply grid technology, system circuit design capacity is more and more higher, it is desirable to existing disconnected Road body amasss the most integrated and miniaturization, and short-circuit current breaking capacity improves constantly, and generally can not Avoid cause chopper when carrying out more than 50kA short-circuit current disjunction, original circuit breaker internal The electric arc that produces when can not all eliminate by short circuit breaking of arc quenching system and high temperature free gas (arc flame), meeting Some charged particle and free gas (arcing) are ejected outside the body of chopper；And voltage switchgear For ensure chopper be short-circuited disjunction time ejection charged particle and free gas do not result in chopper power supply Side be short-circuited or cause mains side to switch cubicle second short circuit, switch cubicle must reserve enough safety away from From, and then increase the size of switch cubicle, cause the unnecessary waste of switch cubicle, with integrated system volume to Miniaturization, tight type is drawn close and is deviated from mutually, and produces the cabinet metal material wasting of resources and economic loss；And In closed cabinet body or stuffy obstructed environment, its charged particle and free gas likely cause insulation to lead Body member is burnt, and produces a large amount of toxic gas or causes the drastically reaction of the chemical composition in air to cause great Security incident, causes economy and personal casualty loss.
But, current existing low-voltage circuit breaker structure is complicated, installs inconvenience, the safety one of use As, its housing poor insulativity, intensity are low, are easily deformed short with service life.
Summary of the invention
The technical problem to be solved in the present invention be to provide a kind of simple in construction, install easy and safe and reliable low Voltage breaker, its housing good insulating, high strength and deformation and service life are long.
For solving the problems referred to above, the present invention adopts the following technical scheme that
A kind of low-voltage circuit breaker, including housing, is provided with pressure electrical apparatus release and chopper, institute in described housing State pressure electrical apparatus release and be positioned at the left end of housing, described pressure electrical apparatus release is provided with fixed mount and air chamber, institute Stating and be provided with movable contact on fixed mount, described air chamber is positioned at the inside of fixed mount, and described air chamber is provided with Trachea, described chopper is positioned at the right-hand member of housing, and the bottom of described chopper is provided with backing plate, described backing plate Being provided above insulator, the right-hand member of described insulator is provided with connection end, and the upper end of described insulator is arranged Having arc chamber, the outside of described arc chamber to be provided with coil, the upper right side of described arc chamber is provided with gives vent to anger Mouthful, described gas outlet is connected with arc chamber.
Further, described housing is made up of the material of following parts by weight proportioning: include methyl ethylene silicon Rubber 100-200 part, thermoplastic polypropylene resin's 50-80 part, white carbon 20-30 part, Vitrified powder 25-35 Part, glass fibre 10-20 part, flyash 30-40 part, hydroxy silicon oil 2-10 part, calcium stearate 10-20 Part, polypropylene fibre 13-19 part, magnesium chloride 11-17 part, asbestos 10-16 part, methyl silicon 6-8 part, anti- Impact agent 5-7 part, coupling agent 3-5 part and heat stabilizer 3-5 part.
Further, the upper end of described pressure electrical apparatus release is provided with terminals, is conducive to connecting power supply.
Further, described air chamber is oval setting, is conducive to saving space.
Further, described movable contact is flexibly connected with chopper, is conducive to energising or power-off.
Further, the gas of the connection of described trachea gas outlet, beneficially air chamber is discharged by gas outlet.
The preparation method of a kind of housing, comprises the following steps:
1) take methyl vinyl silicone rubber 100-200 part and thermoplastic polypropylene resin's 50-80 part is put into molten Stove so that above-mentioned material high-temperature fusion becomes mixing liquid, standby；
2) white carbon 20-30 part, Vitrified powder 25-35 part and flyash 30-40 part are taken slow by blender Stirring, makes cellulose powder and wood powder mix homogeneously, prepares filler, standby；
3) by step 2) prepare filler be milled into fine powder by ball mill, standby；
4) by step 3) filler and the water that prepare 1:1 ratio by weight adds water, and at blender The viscous body of mixing is prepared under high-speed stirred, standby；
5) hydroxy silicon oil 2-10 part, calcium stearate 10-20 part, polypropylene fibre 13-19 part, chlorination are taken Magnesium 11-17 part and the mixing of methyl silicon 6-8 part, be stirred by blender so that material mixing is uniform, Then the material being stirred is added to step 4) in the filler for preparing, again by blender stirring all Even, standby；
6) by step 5) material that is stirred adds step 1) in the mixing liquid for preparing, and add glass Fiber 10-20 part, asbestos 10-16 part, impact modifier 5-7 part, coupling agent 3-5 part and heat stabilizer 3-5 Part, then improve temperature so that additive and step 1) liquid reacting by heating, prepare mixing liquid, Standby；
7) by step 6) in mixing liquid at high temperature thickness by die molding machine molding, prepare blank, Standby；
8) by blank by carrying out edging and japanning, to obtain final product.
The invention has the beneficial effects as follows: owing to being provided with housing, it is possible to protection pressure electrical apparatus release and chopper, Owing to being provided with pressure electrical apparatus release, be conducive to be made by the pressure that air chamber produces when fortuitous event occurs Obtain movable contact to disconnect with chopper, it is achieved short electricity, owing to being provided with arc chamber, be conducive to improving and break The safety in utilization of road device, owing to being provided with gas outlet, it is possible to deriving gas, meanwhile, housing uses this Bright medium material is made, and has good insulating, high strength and deformation and the advantage of length in service life.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of low-voltage circuit breaker of the present invention.
Detailed description of the invention
Embodiment one:
Refering to shown in Fig. 1, a kind of low-voltage circuit breaker, including housing 1, in described housing 1, it is provided with pressure Electrical apparatus release 2 and chopper 3, described pressure electrical apparatus release 2 is positioned at the left end of housing 1, described pressure electrical apparatus release It is provided with fixed mount 4 and air chamber 6 on 2, described fixed mount 4 is provided with movable contact 5, described air chamber 6 inside being positioned at fixed mount 4, described air chamber 6 is provided with trachea 7, and described chopper 3 is positioned at housing 1 Right-hand member, the bottom of described chopper 3 is provided with backing plate 8, and described backing plate 8 is provided above insulator 9, the right-hand member of described insulator 9 is provided with connection end 10, and the upper end of described insulator 9 is provided with arc chamber 11, the outside of described arc chamber 11 is provided with coil 12, and the upper right side of described arc chamber 11 is provided with gives vent to anger Mouth 13, described gas outlet 13 is connected with arc chamber 11.
Described housing 1 is made up of the material of following parts by weight proportioning: include methyl vinyl silicone rubber 200 Part, thermoplastic polypropylene resin 50 parts, white carbon 20, Vitrified powder 25 parts, glass fibre 10 parts, powder Coal ash 30 parts, hydroxy silicon oil 2 parts, calcium stearate 10 parts, polypropylene fibre 13 parts, magnesium chloride 11 Part, 10 parts of asbestos, methyl silicon 6 parts, impact modifier 5 parts, coupling agent 3 parts and heat stabilizer 3 parts.
The upper end of described pressure electrical apparatus release 2 is provided with terminals, is conducive to connecting power supply.
Described air chamber 6 is oval setting, is conducive to saving space.
Described movable contact 5 is flexibly connected with chopper 3, is conducive to energising or power-off.
Described trachea 7 is connected gas outlet 13, the beneficially gas of air chamber 7 and is discharged by gas outlet 13.
The preparation method of a kind of housing, comprises the following steps:
1) take methyl vinyl silicone rubber 200 parts and thermoplastic polypropylene resin 50 parts put into smelting furnace so that Above-mentioned material high-temperature fusion becomes mixing liquid, standby；
2) take white carbon 20 parts, Vitrified powder 25 parts and 30 parts of flyash to be slowly stirred by blender, make Cellulose powder and wood powder mix homogeneously, prepare filler, standby；
3) by step 2) prepare filler be milled into fine powder by ball mill, standby；
4) by step 3) filler and the water that prepare 1:1 ratio by weight adds water, and at blender The viscous body of mixing is prepared under high-speed stirred, standby；
5) take hydroxy silicon oil 2 parts, calcium stearate 10 parts, polypropylene fibre 13 parts, 11 parts of magnesium chloride and Methyl silicon 6 parts mixing, is stirred by blender so that material mixing is uniform, then will be stirred Material adds step 4 to) prepare filler in, stir again by blender, standby；
6) by step 5) material that is stirred adds step 1) in the mixing liquid for preparing, and add glass Fiber 10 parts, 10 parts of asbestos, impact modifier 5 parts, coupling agent 3 parts and heat stabilizer 3 parts, then carry High-temperature so that additive and step 1) liquid reacting by heating, prepare mixing liquid, standby；
7) by step 6) in mixing liquid at high temperature thickness by die molding machine molding, prepare blank, Standby；
8) by blank by carrying out edging and japanning, to obtain final product.
Embodiment two:
Refering to shown in Fig. 1, a kind of low-voltage circuit breaker, including housing 1, in described housing 1, it is provided with pressure Electrical apparatus release 2 and chopper 3, described pressure electrical apparatus release 2 is positioned at the left end of housing 1, described pressure electrical apparatus release It is provided with fixed mount 4 and air chamber 6 on 2, described fixed mount 4 is provided with movable contact 5, described air chamber 6 inside being positioned at fixed mount 4, described air chamber 6 is provided with trachea 7, and described chopper 3 is positioned at housing 1 Right-hand member, the bottom of described chopper 3 is provided with backing plate 8, and described backing plate 8 is provided above insulator 9, the right-hand member of described insulator 9 is provided with connection end 10, and the upper end of described insulator 9 is provided with arc chamber 11, the outside of described arc chamber 11 is provided with coil 12, and the upper right side of described arc chamber 11 is provided with gives vent to anger Mouth 13, described gas outlet 13 is connected with arc chamber 11.
Described housing 1 is made up of the material of following parts by weight proportioning: include methyl vinyl silicone rubber 100 Part, thermoplastic polypropylene resin 80 parts, white carbon 30 parts, Vitrified powder 35 parts, glass fibre 20 parts, 40 parts of flyash, hydroxy silicon oil 10 parts, calcium stearate 20 parts, polypropylene fibre 19 parts, magnesium chloride 17 Part, 16 parts of asbestos, methyl silicon 8 parts, impact modifier 7 parts, coupling agent 5 parts and heat stabilizer 5 parts.
The upper end of described pressure electrical apparatus release 2 is provided with terminals, is conducive to connecting power supply.
Described air chamber 6 is oval setting, is conducive to saving space.
Described movable contact 5 is flexibly connected with chopper 3, is conducive to energising or power-off.
Described trachea 7 is connected gas outlet 13, the beneficially gas of air chamber 7 and is discharged by gas outlet 13.
The preparation method of a kind of housing, comprises the following steps:
1) take methyl vinyl silicone rubber 100 parts and thermoplastic polypropylene resin 80 parts put into smelting furnace so that Above-mentioned material high-temperature fusion becomes mixing liquid, standby；
2) take white carbon 30 parts, Vitrified powder 35 parts and 40 parts of flyash to be slowly stirred by blender, make Cellulose powder and wood powder mix homogeneously, prepare filler, standby；
3) by step 2) prepare filler be milled into fine powder by ball mill, standby；
4) by step 3) filler and the water that prepare 1:1 ratio by weight adds water, and at blender The viscous body of mixing is prepared under high-speed stirred, standby；
5) hydroxy silicon oil 10 parts, calcium stearate 20 parts, polypropylene fibre 19 parts, 17 parts of magnesium chloride are taken With methyl silicon 8 parts mixing, it is stirred by blender so that material mixing is uniform, then will be stirred Material add step 4 to) prepare filler in, stir again by blender, standby；
6) by step 5) material that is stirred adds step 1) in the mixing liquid for preparing, and add glass Fiber 20 parts, 16 parts of asbestos, impact modifier 7 parts, coupling agent 5 parts and heat stabilizer 5 parts, then carry High-temperature so that additive and step 1) liquid reacting by heating, prepare mixing liquid, standby；
7) by step 6) in mixing liquid at high temperature thickness by die molding machine molding, prepare blank, Standby；
8) by blank by carrying out edging and japanning, to obtain final product.
Embodiment three:
Refering to shown in Fig. 1, a kind of low-voltage circuit breaker, including housing 1, in described housing 1, it is provided with pressure Electrical apparatus release 2 and chopper 3, described pressure electrical apparatus release 2 is positioned at the left end of housing 1, described pressure electrical apparatus release It is provided with fixed mount 4 and air chamber 6 on 2, described fixed mount 4 is provided with movable contact 5, described air chamber 6 inside being positioned at fixed mount 4, described air chamber 6 is provided with trachea 7, and described chopper 3 is positioned at housing 1 Right-hand member, the bottom of described chopper 3 is provided with backing plate 8, and described backing plate 8 is provided above insulator 9, the right-hand member of described insulator 9 is provided with connection end 10, and the upper end of described insulator 9 is provided with arc chamber 11, the outside of described arc chamber 11 is provided with coil 12, and the upper right side of described arc chamber 11 is provided with gives vent to anger Mouth 13, described gas outlet 13 is connected with arc chamber 11.
Described housing 1 is made up of the material of following parts by weight proportioning: include methyl vinyl silicone rubber 1050 Part, thermoplastic polypropylene resin 65 parts, white carbon 25 parts, Vitrified powder 30 parts, glass fibre 15 parts, 35 parts of flyash, hydroxy silicon oil 6 parts, calcium stearate 15 parts, polypropylene fibre 16 parts, magnesium chloride 14 Part, 13 parts of asbestos, methyl silicon 7 parts, impact modifier 6 parts, coupling agent 4 parts and heat stabilizer 4 parts.
The upper end of described pressure electrical apparatus release 2 is provided with terminals, is conducive to connecting power supply.
Described air chamber 6 is oval setting, is conducive to saving space.
Described movable contact 5 is flexibly connected with chopper 3, is conducive to energising or power-off.
Described trachea 7 is connected gas outlet 13, the beneficially gas of air chamber 7 and is discharged by gas outlet 13.
The preparation method of a kind of housing, comprises the following steps:
1) take methyl vinyl silicone rubber 150 parts and thermoplastic polypropylene resin 65 parts put into smelting furnace so that Above-mentioned material high-temperature fusion becomes mixing liquid, standby；
2) take white carbon 25 parts, Vitrified powder 30 parts and 35 parts of flyash to be slowly stirred by blender, make Cellulose powder and wood powder mix homogeneously, prepare filler, standby；
3) by step 2) prepare filler be milled into fine powder by ball mill, standby；
4) by step 3) filler and the water that prepare 1:1 ratio by weight adds water, and at blender The viscous body of mixing is prepared under high-speed stirred, standby；
5) take hydroxy silicon oil 6 parts, calcium stearate 15 parts, polypropylene fibre 16 parts, 14 parts of magnesium chloride and Methyl silicon 7 parts mixing, is stirred by blender so that material mixing is uniform, then will be stirred Material adds step 4 to) prepare filler in, stir again by blender, standby；
6) by step 5) material that is stirred adds step 1) in the mixing liquid for preparing, and add glass Fiber 15 parts, 13 parts of asbestos, impact modifier 6 parts, coupling agent 4 parts and heat stabilizer 4 parts, then carry High-temperature so that additive and step 1) liquid reacting by heating, prepare mixing liquid, standby；
7) by step 6) in mixing liquid at high temperature thickness by die molding machine molding, prepare blank, Standby；
8) by blank by carrying out edging and japanning, to obtain final product.
Experimental example:
Choose common housing with special housing compared with the housing of the present invention, and according to insulation effect, Foundation as a comparison, analyzed the situation of three groups of housings, and drew best housing intensity and service life.
With common housing be matched group one, special housing be matched group two and the present invention housing for comparison Group three, concrete data are as shown in the table:
Contrasting three groups of materials, the housing effect obtaining the present invention is best, has insulation compared with two groups of matched groups Effective, intensity is big and the advantage of length in service life.
The invention has the beneficial effects as follows: owing to being provided with housing, it is possible to protection pressure electrical apparatus release and chopper, Owing to being provided with pressure electrical apparatus release, be conducive to be made by the pressure that air chamber produces when fortuitous event occurs Obtain movable contact to disconnect with chopper, it is achieved short electricity, owing to being provided with arc chamber, be conducive to improving and break The safety in utilization of road device, owing to being provided with gas outlet, it is possible to deriving gas, meanwhile, housing uses this Bright medium material is made, and has good insulating, high strength and deformation and the advantage of length in service life.
The above, the only detailed description of the invention of the present invention, but protection scope of the present invention is not limited to This, any change expected without creative work or replacement, all should contain and at scope be Accurate.

Claims (6)

1. a low-voltage circuit breaker, it is characterised in that: include housing, in described housing, be provided with pressure electrical apparatus release And chopper, described pressure electrical apparatus release is positioned at the left end of housing, described pressure electrical apparatus release is provided with fixing Frame and air chamber, described fixed mount is provided with movable contact, and described air chamber is positioned at the inside of fixed mount, described Being provided with trachea on air chamber, described chopper is positioned at the right-hand member of housing, and the bottom of described chopper is provided with pad Plate, described backing plate is provided above insulator, and the right-hand member of described insulator is provided with connection end, described insulation The upper end of body is provided with arc chamber, and the outside of described arc chamber is provided with coil, the upper right side of described arc chamber Being provided with gas outlet, described gas outlet is connected with arc chamber.
2. low-voltage circuit breaker as claimed in claim 2, it is characterised in that: described housing is by following parts by weight The material of proportioning is made: include methyl vinyl silicone rubber 100-200 part, thermoplastic polypropylene resin 50-80 Part, white carbon 20-30 part, Vitrified powder 25-35 part, glass fibre 10-20 part, flyash 30-40 part, Hydroxy silicon oil 2-10 part, calcium stearate 10-20 part, polypropylene fibre 13-19 part, magnesium chloride 11-17 part, Asbestos 10-16 part, methyl silicon 6-8 part, impact modifier 5-7 part, coupling agent 3-5 part and heat stabilizer 3-5 Part.
3. low-voltage circuit breaker as claimed in claim 3, it is characterised in that: the upper end of described pressure electrical apparatus release sets It is equipped with terminals.
4. low-voltage circuit breaker as claimed in claim 4, it is characterised in that: described air chamber is oval setting.
5. low-voltage circuit breaker as claimed in claim 5, it is characterised in that: described movable contact is lived with chopper It is dynamically connected.
6. low-voltage circuit breaker as claimed in claim 6, it is characterised in that: described trachea connects gas outlet.
CN201610617079.1A 2016-07-29 2016-07-29 Low-voltage circuit breaker Pending CN106024535A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610617079.1A CN106024535A (en) 2016-07-29 2016-07-29 Low-voltage circuit breaker

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610617079.1A CN106024535A (en) 2016-07-29 2016-07-29 Low-voltage circuit breaker

Publications (1)

Publication Number Publication Date
CN106024535A true CN106024535A (en) 2016-10-12

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Family Applications (1)

Application Number Title Priority Date Filing Date
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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1056374A (en) * 1990-05-04 1991-11-20 梅兰日兰公司 The instantaneous trip apparatus of circuit-breaker
CN102372874A (en) * 2010-08-19 2012-03-14 中国石油化工股份有限公司 Stress whitening resistant and scratch resistant polypropylene composition, and preparation method thereof
CN103021750A (en) * 2011-09-22 2013-04-03 上海电器股份有限公司人民电器厂 Low-voltage circuit breaker with pneumatic tripping device
CN104327507A (en) * 2014-09-15 2015-02-04 杭州师范大学 Organic silicone resin molding compound and preparation method thereof

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1056374A (en) * 1990-05-04 1991-11-20 梅兰日兰公司 The instantaneous trip apparatus of circuit-breaker
CN102372874A (en) * 2010-08-19 2012-03-14 中国石油化工股份有限公司 Stress whitening resistant and scratch resistant polypropylene composition, and preparation method thereof
CN103021750A (en) * 2011-09-22 2013-04-03 上海电器股份有限公司人民电器厂 Low-voltage circuit breaker with pneumatic tripping device
CN104327507A (en) * 2014-09-15 2015-02-04 杭州师范大学 Organic silicone resin molding compound and preparation method thereof

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
中国优质化工产品大辞典编委会: "《中国优质化工产品大辞典》", 31 December 1991 *

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Application publication date: 20161012