CN1255837C - Circuit breaker - Google Patents
Circuit breaker Download PDFInfo
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- CN1255837C CN1255837C CN01808805.8A CN01808805A CN1255837C CN 1255837 C CN1255837 C CN 1255837C CN 01808805 A CN01808805 A CN 01808805A CN 1255837 C CN1255837 C CN 1255837C
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
- H01H9/302—Means for extinguishing or preventing arc between current-carrying parts wherein arc-extinguishing gas is evolved from stationary parts
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Abstract
The present invention provides a breaker which comprises a fixed contact terminal, a moving contact terminal, a switch mechanism component, an arc-extinguishing device and a box body, wherein a fixed contact is connected with a conductor; the moving contact terminal is connected with a moving contact connected or disconnected with the fixed contact; the moving contact terminal rotates through the switch mechanism component; electric arcs generated when the fixed contact is connected or disconnected with the moving contact are extinguished through the arc-extinguishing device; the components are contained in the box body; an arc-extinguishing component entirely covering the fixed contact terminal is arranged in the arc-extinguishing device; the arc-extinguishing component comprises an arc-extinguishing mold of an insulator which uses non-halogen flame retardant resin as a main ingredient. The present invention provides a miniaturized breaker which has the advantages of good fire retardance and favorable circuit break performance, such as overloading circuit break, short circuit break, etc.
Description
Technical field
The present invention relates to circuit breaker.
Technical background
Fig. 1 and Fig. 2 are the sectional views of circuit breaker, and Fig. 1 represents the on-state of circuit breaker, and Fig. 2 represents the off-state of circuit breaker.And Fig. 3 is side view (a) and the plane graph (b) of extinguishing arc parts enlarged drawing of the arc-extinction device of expression circuit breaker.Among the figure, the 1st, the movable contact that conductors such as copper constitute, the 2nd, with the fixing travelling contact of an end of movable contact 1, the 3rd, with travelling contact 2 connect from fixed contact, the 4th, the fixed contact that the conductors such as copper that fixed contact 3 connects constitute, the 5th, the connector lug part of the mains side that partly constitutes at the other end of permanent joint 4, and distribution is connected with connector lug from external power source.The 6th, arc-extinction device, each other by the space stacked arrangement, by many muffler plates (grid) 6a and extinguishing arc side plate 6b that keeps grid 6a in both sides and extinguishing arc parts 6c formation shown in Figure 3 that the magnetic metal that electric arc takes place between cooling, elimination travelling contact 2 and the fixed contact 3 constitutes, extinguishing arc parts 6c and extinguishing arc side plate 6b are made of insulating material.Extinguishing arc parts 6c is located between travelling contact 2 and the fixed contact 3, and is set as under the state that exposes fixed contact 3 and covers the whole of the fixed contact 4 be exposed to electric arc.The 7th, the switching mechanism part of rotation movable connection 1, driving switch, the 8th, the handle of these switching mechanism part 7 usefulness of manual operation, the 9th, trip gear, the 10th, the connector lug part of load side, the 11st, case, the 12nd, base, hold and fixing above-mentioned parts, constitute the part of casing 16.The 13rd, with connector lug part 5 and box body 16 interior end plates of isolating, the exhaust outlet 13a that discharges hot gas that electric arc produces is arranged, insertion is installed among the gathering sill 12a set on the base 12.The 14th, the arc runner that electric arc is leapt to connector lug part 5 directions.
Below, the operation of relevant aforementioned circuit breaker is described.
Among Fig. 1, operating grip 8, movable contacts 1 are rotated in switching mechanism part 7 action back, travelling contact 2 contact out with fixed contact 3 from.Connector lug part 5 is connected with power supply, and connector lug part 10 is connected with load.By making the contact contact, power to load from power supply.Under this state, in order to ensure the reliability of energising, travelling contact 2 can be pushed fixed contact 3 with the contact pressure of regulation.Here, when overcurrent flows to load side,, after 7 actions of switching mechanism part, between two contacts 2,3, produce electric arc 15 as shown in Figure 2 with trip gear 9 detection of excessive current.
And, accident is short-circuited, when the excessive overcurrent of circuit flow, at two contacts 2, the electromagnetic repulsion power of 3 contact-making surface strengthens, press owing to surpass the contact that is applied on the aforementioned travelling contact 2,, cause leaving of contact 2,3 so movable contact 1 does not wait trip gear 9 and 7 work of switching mechanism part just to rotate.Arc voltage is along with 2 the increase of leaving distance and rising from fixed contact 3 to travelling contact, and in addition, because electromagnetic attracting force, electric arc 15 is simultaneously to the direction expansion of arc-extinction device 6 and arc voltage further rises.Like this, arc current reaches current zero, and electric arc 15 is carried out extinguishing arc, finishes and opens circuit.
That is, the muffler plate 6a of arc-extinction device 6 absorbs the heat of electric arc 15, when cooling off, makes electric arc 15 bendings, works to widen the contact distance of travelling contact 2 and fixed contact 3.In addition, extinguishing arc parts 6c works to prevent that electric arc from moving (electric arc contact) from travelling contact 2 to the starting point of fixed contact 4, owing to producing thermal decomposition gas in the electric arc 15 that is exposed to high temperature, this thermal decomposition gas cooled and blowing electric arc 15 work as extinguishing arc gas simultaneously.
In recent years, along with the downsizing of distribution board size, have the tendency of the miniaturization of circuit breaker own, in addition, there is the tendency that requires to improve flame retardancy level in the plastic material that circuit breaker is used.
Particularly, because the globalization that product is extended sales wishes to have the product that meets European IEC60947 specification and U.S. UL746 specification.In these two kinds of specifications aspect the anti-flammability of the relevant energized components materials such as extinguishing arc parts that keep the low fire-retardant requirement of UL-HB of Japan, IEC60947 specification specifies light catch fire (GWI) be more than 960 ℃, and hot line catch fire (HWI) regulation HWI index in UL94-VO be 4 or UL94-V2 in regulation HWI index be more than 2, and the UL746 specification is more than the V0 at UL94, and these specifications require the anti-flammability of highest ranking respectively.
As the method that solves, can consider that flame retardant resin is used for the extinguishing arc parts, as representative example, can enumerate the halide flame retardant resin of filling the halogen compounds such as bromine of performance effect with a spot of loading.
, halide flame retardant resin is exposed in the thermal decomposition gas that electric arc produces owing to contain metal is had active composition, and corrosion of metals obviously becomes the reason of electrode loose contact, can not switch on after opening circuit repeatedly.Halogen compounds class particularly, because the high temperature (7000-20000 ℃) of electric arc, there is halide ion in the decomposition gas of plasmaization, so extinguishing arc is poor, opening performance worsens and can not open circuit, perhaps will guarantee to open circuit, must strengthen interelectrode distance, the result exists switch disconnector to be difficult to the problem of miniaturization.
Moreover non-halide flame retardant resin is developed very active in recent years, and the crowd knows to have and fills phosphorus compound system, the flame retardant resin of inorganic flame retardants such as silicones system or aluminium hydroxide, or the fragrant family resin of resin self such as polyphenylene sulfide with anti-flammability.
The phosphorus compound flame retardant generally is difficult to use, and particularly uses the system of red phosphorus, and corrosion of metals than halogen system obviously owing to electrode loose contact, can not be switched on after use is opened circuit repeatedly.
And, fill the flame-retarded resin of silicones flame retardant or inorganic flame retardant, because insulating ceramics evaporation on electrode contact of metal oxide that generates at the plasma field of thermal decomposition gas or silica etc., pile up, contaminated electrode surface and cause loose contact is used repeatedly and can not be switched on after opening circuit.In addition, inorganic flame retardant is in order to bring into play the necessary high fillingization of anti-flammability, yet want mixing in stable on heating high melt point thermoplastic resin, the heat decomposition temperature of general inorganic combustion inhibitor (aluminium hydroxide or magnesium hydroxide) is too low, be difficult to high fillingization, can not satisfy anti-flammability, even perhaps reach height fillingization to the low melting point thermoplastic resin, satisfy anti-flammability, but the mechanical strength of extinguishing arc parts reduces.
And the aromatic resin of resins such as polyphenylene sulfide self performance anti-flammability is because the carbon content height in the polymer molecule, the tendency that has opening performance to worsen, in order to ensure opening performance, must enlarge the distance of electric arc and fixed contact, the problem that hinders the circuit breaker miniaturization is arranged like this.
The present invention finishes for addressing the above problem, its objective is that corrosion by suppressing the electrode contact that fire-retardantization cause or the conduction that pollution causes are bad, or mechanical strength reduction or degradation of insulation, provide anti-flammability and opening performance circuit breaker good, Miniaturizable.
Disclosure of an invention
The invention provides a kind of circuit breaker, it is characterized in that, has the fixed contact that fixed contact is connected with conductor, be connected with the aforementioned fixation contact connect from the movable contact of travelling contact, the switching mechanism parts that this movable contact is rotated, to aforementioned fixation contact and travelling contact connect from the time electric arc that produces carry out the arc-extinction device of extinguishing arc, and hold in the circuit breaker of box body of these parts, be provided with the extinguishing arc parts in the aforementioned arc-extinction device, make it to cover the whole of aforementioned fixation contact, and aforementioned extinguishing arc parts contain the extinguishing arc insulating material formed body that the non-halogen fire retardant resin is a principal component.
In addition, circuit breaker provided by the invention is characterized in that, contains triazine series organic compound as fire retardant in the insulating material formed body in extinguishing arc.
In addition, circuit breaker provided by the invention is characterized in that, extinguishing arc is a polyamide with the substrate resin of insulating material formed body.
The aforementioned circuit breaker that is provided is characterized in that, is non-aromatic polyamide as extinguishing arc with the polyamide of the substrate resin of insulating material formed body.
The aforementioned circuit breaker that is provided, it is characterized in that, the non-halogen fire retardant resin contains that to be selected from respect to aforementioned non-halogen fire retardant resin be organic fiber below the 10 weight %, and is the packing material more than a kind of the ceramic whisker below the 15 weight % with respect to aforementioned non-halogen fire retardant resin.
In addition, circuit breaker provided by the invention, it is characterized in that, the extinguishing arc parts are made of the laminated body of the electric arc outlier that is exposed to electric arc with the supporting layer that supports the aforementioned arc outlier, the aforementioned arc outlier is that the extinguishing arc of principal component constitutes with the insulating material formed body by the non-halogen fire retardant resin, and aforementioned supporting layer constitutes by containing the flame retardant resin more than a kind that is selected from glass fibre, inorganic mineral and ceramic fibre.
In addition, circuit breaker provided by the invention is characterized in that, the part of supporting layer has many places to connect the electric arc outlier.
The simple declaration of accompanying drawing
Fig. 1 is the sectional view of expression closing of power circuit breaker state.
Fig. 2 is the partial section of expression circuit breaker off-state.
Fig. 3 be the extinguishing arc parts side view (a), with plane graph (b).
Fig. 4 is the stereogram of extinguishing arc parts.
Fig. 5 is the stereogram (a) of an example of extinguishing arc parts two-layer structure, with the stereogram (b) of another example.
The working of an invention scheme
Below, further specify circuit breaker of the present invention.
Circuit breaker of the present invention, it is characterized in that, in the formation of the critical piece of the Fig. 1 to Fig. 3 that has illustrated, near the part of the extinguishing arc parts 6c of electric arc, adopt the non-halogen fire retardant resin is the extinguishing arc insulating material formed body of principal component to the arc-extinction device 6 of electric arc that is exposed to 2,3 generations of contact.
Extinguishing arc preferably contains triazine series organic compound as fire retardant with the insulating material formed body.
As such triazine series organic compound, for example can enumerate the spy and open the described compound of clear 53-31759 communique, the compound of containing metal corrosive substance or metal oxide not in the thermal decomposition gas that especially preferably is exposed to electric arc and is produced.Can enumerate melamine particularly, ammelide, ammeline, melamine derivatives such as formyl guanamines, amidino groups melamine, cyano group melamine (cyanomelamine), garlic guanamine, close white amine, Miller amine, close lane contain the melamine class of melamine compound or melamine condensation product; Cyanogen urea acid compound classes such as trimethyl cyanurate, triethyl group cyanurate, three n-pro-pyl cyanurates, methyl cyanurate, diethyl cyanurate, the trimethyl isocyanuric acid ester, the triethyl group isocyanuric acid ester, isocyanuric acid compounds such as three n-pro-pyl isocyanuric acid esters, methyl isocyanuric acid ester, diethyl isocyanuric acid ester.
These triazine series organic compound, with respect to the substrate resin of following explanation, the preferred 5-20 weight of its content %, more preferably 10-15 weight %.
In addition, the extinguishing arc substrate resin of insulating material formed body, for example can enumerate the spy and open the polyolefin described in the flat 7-302535 communique, polyolefin copolymer, polyacetals, Copolyacetal, polyamide, polyamide copolymer etc., corrosion of metals or electrode contact pollute in the thermal decomposition gas that preferably produces being exposed to electric arc, or free carbon etc. causes conducting electricity the few resin of component content bad or the extinguishing arc deterioration, more preferably mechanical property and with the good nylon 12 of compatibility of triazine series organic compound, nylon 11, NYLON610, nylon 6, nylon 66, nylon 46, nylon 6T, the polyamide of nylon 9 T etc., moreover, the nylon 6 that carbon content is few, nylon 66, non-aromatic polyamide such as nylon 46, because of the extinguishing arc that is exposed to electric arc with the formation of insulating material formed body surface char less most preferably.
In addition, the non-halogen fire retardant resin preferably contains to be selected from respect to aforementioned non-halogen fire retardant resin and is the organic fiber below the 10 weight % and is the packing material more than a kind of the ceramic whisker below the 15 weight % with respect to aforementioned non-halogen fire retardant resin.
As the organic fiber that the present invention uses, the fiber of burning when for example being burnings such as superhigh molecular weight polyethylene fibers, nylon fiber, polyarylate fiber, aromatic polyamide fibre, polyparaphenylene's benzo-dioxazole fiber, phenolic fibre.If the mixing property of consideration and substrate resin, fusing point, decomposition temperature, mechanical property that forming temperature is above, then preferred fragrance polyamide, polyparaphenylene's benzo-dioxazole fiber etc.
The ceramic whisker of using as the present invention, can enumerate metal oxide-type or hydroxide classes such as aluminium oxide, zinc oxide, magnesium hydroxide, silicon nitride, carborundum, potassium titanate, aluminium borate, nitride-based, carbon compound or boronic acid compounds class equal diameter are counted the whisker of the following acicular crystal of μ m, never decrease article shaped insulation resistance, be difficult to be considered preferred magnesium hydroxide crystal whisker or aluminium borate by arc ionsization or the viewpoint that obtains easily.
Moreover, the flame retardant resin that generally contains the triazine series organic compound, because the interpolation of fillers such as inorganic based compound or glass fibre, when the burning of triazine organic compound, the combustion residue of glass etc. destroys performance and gives the charcoal cambium layer of anti-flammability effect, that is, the crowd knows, because the candle effect of the combustion residue of formed body remained on surface and anti-flammability worsens, but the present invention is used in the burning few organic fiber or the ceramic whisker of combustion residue on the formed body surface of burn off or destruction simultaneously.
The extinguishing arc insulating material formed body that the present invention uses, it is the resin granular material that will be added with fire retardant, or fire retardant powder and pure resin granular material are imported simultaneously the hopper of extruder, from the side feeder of extruder the organic fiber of set amount or ceramic whisker are added to the melt region of resin then, make granular non-halogen fire retardant resin, this flame retardant resin pellet moulding is made with known injection moulding.
In addition, among the present invention, the extinguishing arc parts also can be made of the laminated body of the electric arc outlier that is exposed to electric arc with the supporting layer that supports the aforementioned arc outlier.
For example, when extinguishing arc shown in Figure 4 is used for the extinguishing arc parts with insulating material formed body 6a, for example, shown in Fig. 5 a, electric arc outlier 6a-1 can be that the extinguishing arc of principal component constitutes with the insulating material formed body by the non-halogen fire retardant resin, and supporting layer 6a-2 can constitute by containing the flame retardant resin more than a kind that is selected from glass fibre, inorganic mineral and ceramic fibre.In addition, shown in Fig. 5 b, having many places to connect electric arc outlier 6a-1 on the part of supporting layer resin 6a-2, for example become pectination, is the firm ideal style of engaging force that makes electric arc outlier 6a-1 and supporting layer 6a-2 like this.
The filler that strengthens the contained flame retardant resin of supporting layer 6a-2 is general glass fibre, inorganic mineral and/or ceramic fibre, only otherwise the insulation resistance that is damaged to the type thing does not then have particular restriction, the use level of filler, substrate resin with respect to following explanation, be 5-50 weight %, preferred 15-30 weight %.Also can use the halogen flame retardant as required in right amount.In addition, supporting layer 6a-2 is arranged on the inboard of electric arc outlier 6a-1 or apart from the big arc core a distance of energy, therefore just is exposed to the more weak arc wind of precession, so the formation of thermal decomposition or charring layer is also fewer with respect to electric arc.Therefore, fire retardant is so long as the compound of the above anti-flammability of the VO of performance 960 ℃ of light, UL94 standard, only otherwise damage the mechanical strength of supporting layer, then do not have particular restriction.
In addition, substrate resin as supporting layer 6a-2 use, can enumerate polyolefin, polyacetals, polyamide, aromatic polyamide, aromatic polyester, aromatic polyether, aromatic series polysulfones etc., or the thermoplastic resin of these copolymer, or epoxy resin, unsaturated polyester resin, phenol resin, melmac, Lauxite, thermosetting resins such as allyl resin, and consider from the viewpoint of mouldability, wish preferred thermoplastic resin, more wish preferred thermal endurance, resistance to impact is good and with the good aromatic polyamide of compatibility of the resin of electric arc outlier 6a-1.
In scheme shown in Figure 5, the extinguishing arc that electric arc outlier 6a-1 and supporting layer 6a-2 constitute is with the manufacturing of insulating material formed body, can adopt knownly to utilize injection molding two look moulding to carry out integrated molding.Moreover this autofrettage does not have particular restriction, and it is bonding with the two also can to stick with glue agent etc. respectively after the moulding at electric arc outlier 6a-1 and supporting layer 6a-2.
Embodiment
Below, specifically describe the present invention with embodiment, but the present invention is not limited by these embodiment.Moreover, " % " among the following embodiment, if do not specify, then expression " weight % ".
Embodiment 1
The non-halogen fire retardant resin of embodiment 1 is with respect to the resin of substrate resin filling as the cyano group melamine 10% of fire retardant in substrate resin nylon 66.Particularly, in advance the T-662 resin granular material of the ormal weight of the melapur MC of DSM system and Japan's spinning is done mixed after, with the mixing flame retardant resin that makes of double screw extruder, the flat board of injection molding thick 1.6mm is cut into the test film shape respectively, estimate anti-flammability.In addition, use the insulating material formed body as physical device analogue test usefulness, estimate opening performance with the extinguishing arc of the shape of injection moulding construction drawing 4, thick 1.6mm.
Flame retardant test uses various special-purpose testing machines, UL94 burning test machine (Suga testing machine corporate system), HWI ignitability testing machine (Suga testing machine corporate system), GWI burning test machine (Suga testing machine corporate system) to estimate respectively according to the regulation of UL94, UL746:HWI (test of hot line ignitability), IEC707:GWI (light test).
The circuit breaker of trial-production simulation physical device carries out overload trial and the short circuit test shown in following, the test opening performance.
Overload trial: under the circuit on-state to the electric current of 6 times of the logical rated current of the circuit breaker of the arc-extinction device that contains aforementioned formation (for example, when 100A uses circuit breaker, be 600A), travelling contact 2 and fixed contact 3 are left, contact leaves distance L (distance of travelling contact 2 and fixed contact 3) and is 25mm, has to make opening circuit of arc current reach stipulated number (12 times) for qualified.
Short circuit test: under the circuit on-state, use 230-690V voltage, the overcurrent of logical 50KA leaves movable contact, produce arc current, have this arc current open circuit for stipulated number (3 times) and do not have breakage (breakage of box body specifically) for qualified.
As experimental condition, suppose the circuit breaker of 100-250AF level, overload trial 1 usefulness 3 phase 720V/600A, overload trial 2 usefulness 3 phase 720V/1050A, overload trial 3 usefulness 3 phase 720V/1500A estimate.And, short circuit test 1 usefulness 3 phase 500V/30KA, short circuit test 2 500V/50KA, short circuit test 3 usefulness 440V/65KA estimate.
This resin composition and anti-flammability and opening performance evaluation result are shown in table 1.Overload trial represents successfully to open circuit number of times, short circuit test represent successfully to open circuit number of times and damaged having or not.
This result is, anti-flammability UL94 is VO, and the HWI index is 4, and GWI is 960 ℃, and it is qualified all to show.In addition, with regard to opening performance, overload trial 1,2,3 all reach open circuit 12 times of number of times of regulation, and short circuit test 1,2 also reaches open circuit 3 times of number of times of regulation, number of times is 2 times but the success of short circuit test 3 is opened circuit, and the part of box body chaps.The arc energy of this short circuit test 3 is big, because the part of the extinguishing arc parts of electric arc blast breakage is involved in the electric arc field, the generation of thermal decomposition gas increases as a result, destroy box body, simultaneously in the 3rd time short circuit test, because the extinguishing arc parts are damaged in the 2nd time short interruption, can not produce the thermal decomposition gas that only blows down arc current, therefore can not open circuit, want in the high specified circuit breaker of off condition harshness, to adopt the resin of this embodiment 1 to form, be the problem that solves short circuit test 3, must enlarge as the fixed contact of arc core and the normal of travelling contact, with the clearance distance (maximization of arc-extinction device) of extinguishing arc parts electric arc exposed face, maybe the extinguishing arc parts must be strengthened so that not because the breakage of electric arc blast.
Embodiment 2-5
Embodiment 2-5 changes the nylon kind of substrate resin, uses the pure resin that does not contain reinforcing material or fire retardant.Except the kind of substrate resin, other make resin granular material, test film etc. fully similarly to Example 1, estimate anti-flammability and opening circuit property, and result of the test is shown in table 1.
Here, with regard to substrate resin, and embodiment 2 use nylon 6 (Japan's spinning: T-803), embodiment 3 usefulness nylon 46s (DJEP system: Stanyl TS-300), embodiment 4 usefulness nylon 6T (Japan's spinning: TY-502NZ), embodiment 5 usefulness nylon 9 T (Kuraray corporate system).
The result is, embodiment 2,3 is because with the pure resin of all not filling reinforcing material, and similarly to Example 1, the part of slit parts is because electric arc wind and breakage, and the success of short circuit test 3 number of times that opens circuit is 2 times, and other short circuit test and overload trial are all good.In addition, embodiment 4,5 is owing to contain aromatic series in the resinous principle, and the slit parts surface is because of the charing of opening circuit repeatedly, and the success of overload trial 3 number of times that opens circuit is 11 times, be lower than pre-determined number slightly, and other overload trial and short circuit test is all good.
Embodiment 6-9
The result is that all embodiment have all passed through fire retardancy test and open-circuit test.These show that the deterioration to anti-flammability does not influence as the aluminium borate whisker below the aromatic polyamide fibre below 10% or 15% of reinforcing material interpolation, and improves the resistance to impact of extinguishing arc parts.
Comparative example 1-2
Comparative example 1, comparative example 2, as the brominated Polystyrene (Br-PS) of fire retardant with halogen system, comparative example 1 is at substrate resin nylon 66 (Japan's spinning: fill brominated Polystyrene (Tosoh corporate system Flame-cut21OR) 25% T-662), reach the antimony trioxide (Sb as flame retardant
2O
3) 10%.Comparative example 2 is filled glass fibers 30% in comparative example 1.
The flame retardant effect of the brominated Polystyrene of these halogen systems is good, the comparative example 2 of filled glass fiber, and UL94 and GWI are all qualified, and the HWI of other two comparative examples is index 2, compares with the index 4～3 of cyano group melamine, and is all fabulous.Yet with regard to opening performance, overload trial, short circuit test are all bad in comparative example 1, and be all defective under any experimental condition.And in comparative example 2, with regard to the short interruption performance, can not connect below half of the desired number of times that successfully opens circuit of short circuit test 3, the overload opening performance requires under all experimental conditions all being successfully to open circuit and can not connect below half of number of times.This estimation is in the overload trial, contain bromine owing to being exposed in the gas that electric arc produces, the corrosion contact metal, cause and to connect, and in the short circuit test, owing to have bromide ion in the extinguishing arc gas, the extinguishing arc time is elongated, make the phenomenon of the grid consumption etc. of arc-extinction device, cause opening performance to worsen.
Table 1
| Extinguishing arc is formed with the insulating material resin | Anti-flammability | The overload opening performance | The short interruption performance | |||||||||
| The embodiment sequence number | Substrate resin | Fire retardant | Reinforcing material | UL 94 | HWI | GWI 960℃ | Overload trial 1 number of success | Overload trial 2 number of success | Overload trial 3 number of success | Short circuit test 1 opens circuit/breakage | Short circuit test 2 opens circuit/breakage | Short circuit test 3 opens circuit/breakage |
| Embodiment 1 | PA66 | Cyano group melamine (10%) | Do not have | VO | 4 | Qualified | 12 | 12 | 12 | 3/ does not have | 3/ does not have | 2/ has |
| Embodiment 2 | PA6 | Cyano group melamine (10%) | Do not have | VO | 4 | Qualified | 12 | 12 | 12 | 3/ does not have | 3/ does not have | 2/ has |
| Embodiment 3 | PA46 | Cyano group melamine (10%) | Do not have | VO | 4 | Qualified | 12 | 12 | 12 | 3/ does not have | 3/ does not have | 2/ has |
| Embodiment 4 | PA6T | Cyano group melamine (10%) | Do not have | VO | 4 | Qualified | 12 | 12 | 11 | 3/ does not have | 3/ does not have | 3/ does not have |
| Embodiment 5 | PA9T | Cyano group melamine (10%) | Do not have | VO | 4 | Qualified | 12 | 12 | 11 | 3/ does not have | 3/ does not have | 3/ does not have |
| Embodiment 6 | PA66 | Cyano group melamine (10%) | Aromatic polyamide fibre (5%) | VO | 4 | Qualified | 12 | 12 | 12 | 3/ does not have | 3/ does not have | 3/ does not have |
| Embodiment 7 | PA66 | Cyano group melamine (10%) | Aromatic polyamide fibre (10%) | VO | 4 | Qualified | 12 | 12 | 12 | 3/ does not have | 3/ does not have | 3/ does not have |
| Embodiment 8 | PA66 | Cyano group melamine (10%) | Aluminium borate whisker (10%) | VO | 4 | Qualified | 12 | 12 | 12 | 3/ does not have | 3/ does not have | 3/ does not have |
| Embodiment 9 | PA66 | Cyano group melamine (10%) | Aluminium borate whisker (15%) | VO | 3 | Qualified | 12 | 12 | 12 | 3/ does not have | 3/ does not have | 3/ does not have |
| Comparative example 1 | PA66 | Br-PS/Sb 2O 3(25/10％) | Do not have | VO | 2 | Qualified | 8 | 5 | 5 | 2/ has | 2/ has | 1/ has |
| Comparative example 2 | PA66 | Br-PS/Sb 2O 3(25/10％) | Glass fibre (30%) | VO | 2 | Qualified | 6 | 6 | 5 | 3/ does not have | 3/ does not have | 2/ does not have |
Embodiment 10-14
Embodiment 10-14 is Test Drawing 5 scheme extinguishing arc examples of members.Among the embodiment 10-13, shown in Fig. 5 a, be the nylon 66 of lamination, with formed body as the simple two-layer structure of the halogen fire retardant resin forming that strengthens with inorganic compound shown in the table 2 or glass fibre of supporting layer 6a-2 as the interpolation cyano group melamine of the embodiment 1 of electric arc outlier 6a-1.Here, the electric arc outlier that at first injection moulding 0.8mm is thick, injection moulding supporting layer then, making total wall thickness is 1.6mm, makes the extinguishing arc parts with the two look methods of forming.And embodiment 14 is shown in Fig. 5 b, and the part of supporting layer resin 6a-2 connects the surface of electric arc outlier 6a-1, becomes part and is communicated with two laminated structures layer by layer, makes the electric arc outlier more firm with engaging of supporting layer.That is, a part of cross section of supporting layer becomes pectination to connect the electric arc outlier that the non-halogen fire retardant resin is formed.
Embodiment 10-14 is the supporting layer resin of usefulness respectively, be that UL94 is the VO standard, HWI, the also all standard compliant commercially available flame-retarded resin of GWI, embodiment 10 uses bromine flame-retardant PA 66 (the E.I.Du Pont Company's system: Zytel FR50) that contains glass fibre 25%, embodiment 11 uses bromine flame-retardant PA 66 (E.I.Du Pont Company's system: Zytel FR70M30) of filling talcum powder 30%, embodiment 12 uses the fire-retardant PA46 of bromine (the DJEP corporate system: Stanyl TS250F40) that contains glass fibre 20%, embodiment 13 uses the fire-retardant PA46 of bromine that contains glass fibre 45%, and (the DJEP corporate system: Stanyl TS250F90), embodiment 14 uses the bromine flame-retardant PA 66 that contain glass fibre 25% (the E.I.Du Pont Company system: Zytel FR50) identical with embodiment 10.
The opening performance evaluation result of embodiment 10-14 has been shown in the table 2.This result is, the breakage that the electric arc outlier does not have electric arc wind to cause in short circuit test, and because the charring layer that the supporting layer resin forms in overload trial is few, the number of times so all satisfied success of stipulating of any test of short circuit test and overload trial is opened circuit can obtain good opening performance.
Here, embodiment 14 exposes the supporting layer resin on a part of surface of electric arc outlier, so the overload opening performance might worsen because of the charing of this exposed portions serve resin, but the charring layer of exposed portions serve resin just disperses to exist, being maintained of electric arc outlier resin part along face resistance, do not form edge by the extinguishing arc parts towards the connection path of fixed contact, so all obtain good result under any overload trial condition.
Here, consider,, also be not limited to this method of forming especially, certainly use adhesive etc. bonding as required though the electric arc outlier uses the two look methods of forming with engaging of supporting layer from industrialized viewpoint.
Table 2
| Extinguishing arc subtracts the type body with insulating material | The overload opening performance | The short interruption performance | |||||||
| The embodiment sequence number | Electric arc outlier resin | The supporting layer resin | Laminar structure | Overload trial 1 number of success | Overload trial 2 number of success | Overload trial 3 number of success | Short circuit test 1 opens circuit/breakage | Short circuit test 2 opens circuit/breakage | Short circuit test 3 opens circuit/breakage |
| Embodiment 10 | PA66/ cyano group melamine | PA66/Br (glass fibre 25%) | Simple two layers | 12 | 12 | 12 | 3/ does not have | 3/ does not have | 3/ does not have |
| Embodiment 11 | PA66/ cyano group melamine | PA66/Br (talcum powder 30%) | Simple two layers | 12 | 12 | 12 | 3/ does not have | 3/ does not have | 3/ does not have |
| Embodiment 12 | PA66/ cyano group melamine | PA46/Br (glass fibre 209%) | Simple two layers | 12 | 12 | 12 | 3/ does not have | 3/ does not have | 3/ does not have |
| Embodiment 13 | PA66/ cyano group melamine | PA46/Br (glass fibre 45%) | Simple two layers | 12 | 12 | 12 | 3/ does not have | 3/ does not have | 3/ does not have |
| Embodiment 14 | PA66/ cyano group melamine | PA66/Br (glass fibre 25%) | Part connects two layers | 12 | 12 | 12 | 3/ does not have | 3/ does not have | 3/ does not have |
Effect of the present invention
1) according to the breaker of the 1st aspect of the present invention, have fixed contact that fixed contact is connected with conductor, with aforementioned fixed contact connect from the movable contact that is fixedly connected with travelling contact, make switching mechanism parts that this movable contact rotates, aforementioned fixed contact and travelling contact are connect from the time generation electric arc carry out the arc-extinction device of extinguishing arc and hold in the breaker of box body of these parts, be provided with the extinguishing arc parts in the aforementioned arc-extinction device, make it to cover the whole of aforementioned fixed contact, and because aforementioned extinguishing arc parts contain the extinguishing arc insulating materials formed body that the non-halogen fire retardant resin is principal component, corrosion by suppressing electrode contact or the connection that pollution causes are bad, or suppress mechanical strength and reduce and degradation of insulation, guarantee anti-flammability, can improve simultaneously that overload is opened circuit or the opening performance of short interruption etc.
2) according to the breaker of the 2nd aspect of the present invention, owing to contain triazine series organic compound as fire retardant in the insulating materials formed body in extinguishing arc, can guarantee anti-flammability, do not contain simultaneously the strong phosphorus compound of the metal protection such as docking point owing to extinguishing arc gas or become silicon or the metal oxide of loose contact reason, can improve the overload opening performance, realize the miniaturization of arc-extinction device.
3) according to the breaker of the 3rd aspect of the present invention, extinguishing arc owing to be polyamide, can be controlled extinguishing arc with the degradation of insulation that the charing on insulating materials formed body surface causes with the substrate resin of insulating materials formed body, can further improve the overload opening performance.
4) according to the breaker of the 4th aspect of the present invention, owing to be that non-aromatic is polyamide as extinguishing arc with the polyamide of the substrate resin of insulating materials formed body, can further control the degradation of insulation that extinguishing arc causes with the charing on insulating materials formed body surface, further improve the overload opening performance, realize the miniaturization of arc-extinction device.
5) according to the breaker of the 5th aspect of the present invention, the non-halogen fire retardant resin contain be selected from respect to aforementioned non-halogen fire retardant resin be below 10 % by weight organic fiber be the packing material more than a kind of the ceramic whisker below 15 % by weight with respect to aforementioned non-halogen fire retardant resin, do not damage anti-flammability, improve the resistance to impact of extinguishing arc parts, improve the short interruption performance.
6) according to the breaker of the 6th aspect of the present invention, the extinguishing arc parts are made of the layered product of the electric arc outlier that is exposed to electric arc with the supporting layer that supports the aforementioned arc outlier, the aforementioned arc outlier is that the extinguishing arc of principal component consists of with the insulating materials formed body by the non-halogen fire retardant resin, and aforementioned supporting layer consists of by containing the flame retardant resin more than a kind that is selected from glass fibre, inorganic mineral and ceramic fibre, can guarantee anti-flammability, can improve simultaneously the resistance to impact of extinguishing arc parts, can further improve the short interruption performance.
7) according to the breaker of the 7th aspect of the present invention, the part of supporting layer has many places to pass the electric arc outlier, thereby makes the electric arc outlier of extinguishing arc parts firm with engaging of supporting layer, further improves the short interruption performance.
Claims (5)
1. circuit breaker, it is characterized in that, has the fixed contact that fixed contact is connected with conductor, be connected with the aforementioned fixation contact connect from the movable contact of travelling contact, the switching mechanism parts that this movable contact is rotated, to aforementioned fixation contact and travelling contact connect from the time electric arc that produces carry out the arc-extinction device of extinguishing arc, and hold in the circuit breaker of box body of these parts, be provided with the extinguishing arc parts in the aforementioned arc-extinction device, make it to cover the whole surface of aforementioned fixation contact, and aforementioned extinguishing arc parts contain the extinguishing arc insulating material formed body that the non-halogen fire retardant resin is a principal component, described extinguishing arc is with the triazine series organic compound that contains in the insulating material formed body as fire retardant, and described non-halogen fire retardant resin contains that to be selected from respect to aforementioned non-halogen fire retardant resin be organic fiber below the 10 weight %, with be the packing material more than a kind of the ceramic whisker below the 15 weight % with respect to aforementioned non-halogen fire retardant resin.
2. the described circuit breaker of claim 1 is characterized in that, extinguishing arc is a polyamide with the substrate resin of insulating material formed body.
3. the described circuit breaker of claim 2 is characterized in that, is that non-aromatic is a polyamide as extinguishing arc with the polyamide of the substrate resin of insulating material formed body.
4. the described circuit breaker of claim 1, it is characterized in that, the extinguishing arc parts are made of the laminated body of the electric arc outlier that is exposed to electric arc with the supporting layer that supports the aforementioned arc outlier, the aforementioned arc outlier is that the extinguishing arc of principal component constitutes with the insulating material formed body by the non-halogen fire retardant resin, and aforementioned supporting layer constitutes by containing the flame retardant resin more than a kind that is selected from glass fibre, inorganic mineral and ceramic fibre.
5. the described circuit breaker of claim 4 is characterized in that, the part of supporting layer has many places to pass the electric arc outlier.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2001/002486 WO2002078032A1 (en) | 2001-03-27 | 2001-03-27 | Circuit breaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1426592A CN1426592A (en) | 2003-06-25 |
| CN1255837C true CN1255837C (en) | 2006-05-10 |
Family
ID=11737165
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN01808805.8A Expired - Fee Related CN1255837C (en) | 2001-03-27 | 2001-03-27 | Circuit breaker |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP1313121A1 (en) |
| JP (1) | JPWO2002078032A1 (en) |
| CN (1) | CN1255837C (en) |
| TW (1) | TW563151B (en) |
| WO (1) | WO2002078032A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102947911A (en) * | 2010-06-18 | 2013-02-27 | 帝斯曼知识产权资产管理有限公司 | Electrical circuit breaker |
| CN105531783A (en) * | 2013-08-29 | 2016-04-27 | 松下知识产权经营株式会社 | Contact apparatus |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090266794A1 (en) * | 2006-03-29 | 2009-10-29 | Heydendorf Juergen | Arc Quenching Device With an Arc Quenching Material for a Circuit Breaker |
| DE102006015305A1 (en) * | 2006-03-29 | 2007-10-04 | Siemens Ag | Electric arc discharge device for electric switch, has discharge plates arranged parallel to each other, and part made of gaseous plastic material, overlapping two plates and extending parallel to arc running direction |
| WO2008087136A1 (en) * | 2007-01-18 | 2008-07-24 | Siemens Aktiengesellschaft | Quenching element, quenching unit, quenching and plugging unit, and switching device |
| JP2009070780A (en) * | 2007-09-18 | 2009-04-02 | San'eisha Mfg Co Ltd | Insulating barrier of power switch |
| CN102108204B (en) * | 2009-12-24 | 2013-03-20 | 合肥杰事杰新材料股份有限公司 | Plastic case material for breaker and preparation method thereof |
| EP2393093B1 (en) * | 2010-06-01 | 2015-09-16 | ABB Technology AG | Arc chute, circuit breaker for a medium voltage circuit, and use of a polymer plate |
| JP2015049937A (en) * | 2013-08-29 | 2015-03-16 | パナソニックＩｐマネジメント株式会社 | Contactor |
| JP6614507B2 (en) * | 2017-07-14 | 2019-12-04 | パナソニックＩｐマネジメント株式会社 | Contact device and electromagnetic relay |
| KR102054332B1 (en) * | 2018-06-26 | 2019-12-10 | 엘에스산전 주식회사 | Arc Extinguish Chamber Base of Molded Case Circuit Breaker |
| CN109166774B (en) * | 2018-10-27 | 2023-09-05 | 上图电气有限公司 | Plastic case circuit breaker |
| CN110376514B (en) * | 2019-07-10 | 2021-01-29 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Method for evaluating comprehensive performance of direct-current high-speed switch |
| US20220262540A1 (en) * | 2021-02-17 | 2022-08-18 | Eaton Intelligent Power Limited | Thermoplastic based arc resistant material for electrical application |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3359422B2 (en) * | 1994-03-10 | 2002-12-24 | 三菱電機株式会社 | Arc-extinguishing insulating material composition, arc-extinguishing insulating material molded article, and arc-extinguishing device using them |
| JPH11335534A (en) * | 1998-05-25 | 1999-12-07 | Toray Ind Inc | Resin composition for housing and housing made therefrom |
| JP2000119494A (en) * | 1998-10-15 | 2000-04-25 | Kanegafuchi Chem Ind Co Ltd | Reinforced flame-retardant polyester resin composition |
| JP2000129263A (en) * | 1998-10-27 | 2000-05-09 | Rin Kagaku Kogyo Kk | Low-smoke-generation flame retardant composition and low-smoke-generation flame-retardant resin composition |
-
2001
- 2001-03-27 EP EP01915844A patent/EP1313121A1/en not_active Withdrawn
- 2001-03-27 CN CN01808805.8A patent/CN1255837C/en not_active Expired - Fee Related
- 2001-03-27 JP JP2002575975A patent/JPWO2002078032A1/en active Pending
- 2001-03-27 WO PCT/JP2001/002486 patent/WO2002078032A1/en not_active Application Discontinuation
- 2001-03-29 TW TW090107461A patent/TW563151B/en not_active IP Right Cessation
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102947911A (en) * | 2010-06-18 | 2013-02-27 | 帝斯曼知识产权资产管理有限公司 | Electrical circuit breaker |
| CN102947911B (en) * | 2010-06-18 | 2015-07-22 | 帝斯曼知识产权资产管理有限公司 | Electrical circuit breaker |
| CN105531783A (en) * | 2013-08-29 | 2016-04-27 | 松下知识产权经营株式会社 | Contact apparatus |
| CN105531783B (en) * | 2013-08-29 | 2019-01-08 | 松下知识产权经营株式会社 | contact device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1426592A (en) | 2003-06-25 |
| JPWO2002078032A1 (en) | 2004-07-15 |
| TW563151B (en) | 2003-11-21 |
| WO2002078032A1 (en) | 2002-10-03 |
| EP1313121A1 (en) | 2003-05-21 |
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