CN102412086B - Fusing phase-lacking protection fuse composite disconnector - Google Patents
Fusing phase-lacking protection fuse composite disconnector Download PDFInfo
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- CN102412086B CN102412086B CN201110209958.8A CN201110209958A CN102412086B CN 102412086 B CN102412086 B CN 102412086B CN 201110209958 A CN201110209958 A CN 201110209958A CN 102412086 B CN102412086 B CN 102412086B
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Abstract
The invention relates to a fusing phase-lacking protection fuse composite disconnector. The fusing phase-lacking protection fuse composite disconnector comprises a stripped disconnector, and a tripping device; the stripped disconnector comprises a disconnector base and a disconnector cover; the other side of the disconnector base is provided with a fuse cabin; a fuse clamping seat is arranged in the fuse cabin; three fuses are arranged on the fuse clamping seat from top to bottom; the trapping device comprises a circuit board, a tripping device shell and a tripping device base; the tripping device shell is buckled on the other side of the tripping device base; the circuit board is arranged in a cavity which is formed between the tripping device shell and the tripping device base; an energization demagnetization permanent magnet is arranged below the tripping device shell; one side of the energization demagnetization permanent magnet is provided with a suction disc which is connected with a tension spring; and the tension spring is connected with the fuse cabin through a tripping ripping bar. The tripping device which is developed by the invention is arranged at the upper end of the stripped disconnector in a vertical structure mode to ensure the tipping device and the stripped disconnector are integrated and the widths are consistent; and the fusing phase-lacking protection fuse composite disconnector is convenient to install and solves that an installation structure is contradictory and practicability is low.
Description
Technical field
The present invention relates to low-voltage circuit separated time electric power system field, relate in particular to a kind of composite isolating switch of fusing open-phase protection type fuse.
Background technology
Fuse disconnecting switch is a kind of switch of power consumption equipment being protected by fusible core, and that this switch requires is in use deciliter simple, rapidly.Common fuse disconnecting switch generally includes the base that fixed contact is installed and the upper cover that moving contact is installed, and upper cover is hinged by a connector and base, the rotation by upper cover realize switch deciliter.Mostly there is following shortcoming in the fuse disconnecting switch of existing structure:
1, from mounting structure: also can reach fuse blows default-phase protection function if the load fuse isolating switch of current like product is separately arranged in pairs or groups after other electric component; but width is all larger; in power distribution cabinet, circuit is very complicated; high cost; there is contradiction in the collocation of each element, many circuits can make whole power distribution cabinet volume increase after installing does not have practicality.
2, from the function of fuse blows open-phase protection: the fuse load-break switch of like product is all without the default-phase protection function after fuse blows in the market; if so in use there is the fusing of breaking down mutually; and other two-phase continues power supply; cause the power supply of electrical network phase shortage, its consequence is that three phase electric machine burns out because phase shortage turns round.
3, from time of open-phase protection: low-pressure electronic equipment product that in the market can complete independently default-phase protection function is thermal relay and circuit breaker.The default-phase protection function of these two kinds of electrical equipment; all to adopt two kinds of sticky forcing together of hardware material that expanded by heating coefficient is different; after being heated because of the difference of the coefficient of expansion; the principle that bends to promote contact disjunction achieves the goal; so reaction is slow; be about 20 seconds operate time, be easy to cause motor burning.But shorten operate time and easily cause again circuit breaker misoperation.
4, from the contact of the fuse switch in the market of reliability of operation, be all metal stamping bending and molding, this moulding process contact pressure is inaccurate, so and can only a slice realize 1-2 some contact contact pressure must be large, but can cause fuse to be inserted, do not enter virtual connection heating, if the too little fuse virtual connection heating of pressure is unstable.
Summary of the invention
The object of this invention is to provide a kind of composite isolating switch of fusing open-phase protection type fuse, to overcome currently available technology above shortcomings.
The object of the invention is to be achieved through the following technical solutions:
A kind of composite isolating switch of fusing open-phase protection type fuse, comprise bar shaped isolating switch and release, described bar shaped isolating switch comprises switch support and switch cover, one side of switch support is provided with switch cover, the opposite side of switch support is provided with fuse cabin, the inside in fuse cabin is provided with fuse deck, three fuses are from top to bottom equipped with in the top of fuse deck, the left side at fuse top is provided with switch knob, described release comprises circuit board, release shell and release pedestal, one side of release pedestal is provided with energy storage pull bar and release functional switch, the opposite side of release pedestal fastens release shell, the cavity inside forming between release shell and release pedestal is provided with circuit board, the below of release shell is provided with energising demagnetization permanent magnet, one side of energising demagnetization permanent magnet is provided with sucker, sucker connects extension spring, extension spring is connected with fuse cabin by a de-mouthful ripping bar.
The width of described switch support is identical with the width in fuse cabin and the width of release.
The upper end of described fuse connect respectively introduce release three-phase electricity A phase, B phase and C as the power taking of release with contrast circuit with lower end, A phase, B phase and the C that the lower end of fuse connects respectively introducing release three-phase electricity is as the detection of release and contrast circuit with upper end.
Described circuit board comprises rectification circuit module, residue phase power failure detection circuit module, output circuit module and main control singlechip, and main control singlechip is connected with rectification circuit module, residue phase power failure detection circuit module and output circuit module respectively by circuit.
Described fuse deck comprises contact base and supporting plate, and the bottom of contact base arranges copper bar terminal block, and the two ends of contact base top are fixed support plate respectively, and the both sides of supporting plate arrange respectively contact, between two supporting plates, extension spring are set.
Described release comprises circuit board, release shell and release pedestal, one side of release pedestal is provided with dropout switch, the opposite side of release pedestal fastens release shell, the cavity inside forming between release shell and release pedestal is provided with circuit board, the below of release shell is provided with energising demagnetization permanent magnet, one side of energising demagnetization permanent magnet is provided with sucker, and the opposite side of sucker is provided with energy storage and promotes bucket, and energy storage promotes bucket and is provided with stage clip.
Described fuse deck comprises contact base, the bottom surface of contact base is copper bar wiring face, the two ends, left and right of contact base top surface arrange respectively two groups of symmetrical contact supporting plates, between corresponding contact supporting plate, some contacts are evenly set, between each contact and contact supporting plate, by pin, be fixedly connected with, between two adjacent contacts, be provided with hook spring, the top that hooks spring is resisted against on the movable axis at contact middle part.
Beneficial effect of the present invention is:
1, the invention solves mounting structure problem: up-down structure mode is contained in the release of research and development voluntarily the upper end of bar switch; make it into as a whole and width is consistent; solved in the situation of bar shaped fuse load-break switch band fuse blows default-phase protection function; can also meet many circuits is arranged in narrow and small power distribution cabinet; and easy for installation; integral body sees that in power distribution cabinet, circuit is simple, has solved the problem of mounting structure contradiction and practicality.
2, the invention solves the problem that single-phase or two fuse blows of traditional fuse switch can not three-phase power-off: the present invention has one or two fuse blows phase-shortage release power-off protection functions, has solved the problem that traditional fuse switch does not have fuse blows dropout three-phase power down function.
3, the invention solves the slow-footed problem of traditional open-phase protection on-off effect: fuse type load-break switch speed of the present invention is 2-8 second, solved because the regular tap time passes slowly or do not have a problem that default-phase protection function makes low voltage electric network phase-deficient operation.
4, the invention solves the unsettled problem of traditional fuse switch contact: contact adopts multiple spot independently to contact, it is too large and stable that each point has independent spring to guarantee that pressure does not need, whole lifting one's head one has 12 independent contacts, solved traditional fuse switch contact pressure, temperature rise, three conflicting problems of problem of virtual connection.
Accompanying drawing explanation
With reference to the accompanying drawings the present invention is described in further detail below.
Fig. 1 is the front view of the composite isolating switch of fusing open-phase protection type fuse described in the embodiment of the present invention 1;
Fig. 2 is the upward view of Fig. 1;
Fig. 3 is the circuit theory diagrams of rectification circuit module in the composite isolating switch of fusing open-phase protection type fuse described in the embodiment of the present invention 1;
Fig. 4 remains the circuit theory diagrams of phase power failure detection circuit module in the composite isolating switch of fusing open-phase protection type fuse described in the embodiment of the present invention 1;
Fig. 5 is the circuit theory diagrams of output circuit module in the composite isolating switch of fusing open-phase protection type fuse described in the embodiment of the present invention 1;
Fig. 6 the present invention is the front view of fuse deck in the composite isolating switch of fusing open-phase protection type fuse described in embodiment 1;
Fig. 7 is that the present invention is the end view of fuse deck in the composite isolating switch of fusing open-phase protection type fuse described in embodiment 1;
Fig. 8 is the front view of the composite isolating switch of fusing open-phase protection type fuse described in the embodiment of the present invention 2;
Fig. 9 is the upward view of Fig. 6;
Figure 10 is the front view of fuse deck in the composite isolating switch of fusing open-phase protection type fuse described in the embodiment of the present invention 2;
Figure 11 is the end view of fuse deck in the composite isolating switch of fusing open-phase protection type fuse described in the embodiment of the present invention 2;
Figure 12 is the upward view of fuse deck in the composite isolating switch of fusing open-phase protection type fuse described in the embodiment of the present invention 2.
In figure:
1, switch support; 2, release; 3, switch cover; 4, fuse cabin; 5, fuse deck; 6, fuse; 7, switch knob; 8, circuit board; 9, release shell; 10, release pedestal; 11, energy storage pull bar; 12, release functional switch; 13, energising demagnetization permanent magnet; 14, sucker; 15, extension spring; 16, de-mouthful ripping bar; 17, rectification circuit module; 18, residue phase power failure detection circuit module; 19, output circuit module; 20, main control singlechip; 21, contact base; 22, supporting plate; 23, copper bar terminal block; 24, contact; 25, extension spring; 26, dropout switch; 27, energy storage promotes bucket; 28, stage clip; 29, copper bar wiring face; 30, contact supporting plate; 31, contact; 32, pin; 33, hook spring; 34, movable axis.
Embodiment
As shown in Fig. 1-7, composite isolating switch of fusing open-phase protection type fuse described in the embodiment of the present invention 1, comprise bar shaped isolating switch and release 2, described bar shaped isolating switch comprises switch support 1 and switch cover 3, one side of switch support 1 is provided with switch cover 3, the opposite side of switch support 1 is provided with fuse cabin 4, the inside in fuse cabin 4 is provided with fuse deck 5, three fuses 6 are from top to bottom equipped with in the top of fuse deck 5, the left side at fuse 6 tops is provided with switch knob 7, described release 2 comprises circuit board 8, release shell 9 and release pedestal 10, one side of release pedestal 10 is provided with energy storage pull bar 11 and release functional switch 12, the opposite side of release pedestal 10 fastens release shell 9, the cavity inside forming between release shell 9 and release pedestal 10 is provided with circuit board 8, the below of release shell 9 is provided with energising demagnetization permanent magnet 13, one side of energising demagnetization permanent magnet 13 is provided with sucker 14, sucker 14 connects extension spring 15, extension spring 15 is connected with fuse cabin 4 by a de-mouthful ripping bar 16.
The width of described switch support 1 is identical with the width in fuse cabin 4 and the width of release 2.
The upper end of described fuse 6 connect respectively introduce release 2 three-phase electricity A phase, B phase and C as the power taking of release 2 with contrast circuit with lower end, A phase, B phase and the C that the lower end of fuse 6 connects respectively introducing release 2 three-phase electricity is as the detection of release 2 and contrast circuit with upper end.
Described circuit board 8 comprises rectification circuit module 17, residue phase power failure detection circuit module 18, output circuit module 19 and main control singlechip 20, main control singlechip 20 is connected with rectification circuit module 17, residue phase power failure detection circuit module 18 and output circuit module 19 respectively by circuit, and main control singlechip 20 also receives Smoke Sensor signal and sense switch detection signal by circuit.
Described fuse deck 5 comprises contact base 21 and supporting plate 22, the bottom of contact base 21 arranges copper bar terminal block 23, the two ends at contact base 21 tops are fixed support plate 22 respectively, and the both sides of supporting plate 22 arrange respectively between 24, two supporting plates 22 of contact extension spring 25 is set.
Rectification circuit module 17, as shown in Figure 3 by AB phase (practical operation is any two-phase) process transformer and rectification circuit, the power supply that also has accessory power supply voltage stabilizing chip to form several parts is supplied with, concrete formation is as the main trip gear power supply of supplying with between 20-25V of V+ in figure, + 12V supplies with relay work, and+5V supplies with to main control singlechip and auxiliary circuit thereof, and wherein C1 is energy-storage travelling wave tube, time need be used 3300UF/50V electrochemical capacitor, in the time of need to threading off work, provide moment makeup energy; D1 is that while preventing system cut-off, system power refluxes, and system can have electricity for a long time, and rear end A detected, B, and the short of electricity of C phase, causes system false triggering to thread off and moves.
Residue phase power failure detection circuit module 18, as shown in Figure 4, moving triode Q1, if there is electric C1N signal to show as low level, power-off shows as high level.C2 effect is accumulation of energy effect, so as not to C mutually electricity in addition half-wave without electricity, will cause triode can not continue conducting.
Output circuit module 19, as shown in Figure 5, be responsible for detecting each road signal, and the final decision action of whether threading off, be responsible for the signal of detection mainly: front end residue phase transformation signal C1N, rear end three-phase inversion signal AB2N, AC2N, also have Smoke Sensor signal (switching signal), system overhaul signal.Output dropout actuating circuit is mainly by R8, R9, and C7, D5, Q2, K1 forms, the actual output of single-chip microcomputer high level, system dropout, output low level is not threaded off.D5 effect is the false triggering when power-off of anti-locking system, and when system voltage is during lower than certain voltage, single-chip microcomputer can be in nondeterministic statement, and now this voltage-stabiliser tube has to low-voltage the Q2 effect that drives that stops.J1 is trip gear interface.
The present invention is except Smoke Sensor detection signal and inspection switch signal, and the main signal source that determines whether to thread off is: C1N, AB2N, AC2N, as long as front-end A 1, B1, C1 is normal, rear end A2, B2, C2 any (is equivalent to have at least a fuse wire to disconnect without electricity mutually; If front-end A 1, B1, C1 itself has any one power-off, this device is not at the row of protection).Concrete realization is mainly passed through C1N, AB2N, and tri-input of AC2N comprehensively judge execution.
If need the action of threading off, above-mentioned signal has following several form of expression:
A, C1N are low level, AB2N, and any one is high level for AC2N;
B, C1N are high level, and AB2N is high level.
Other several operating states of the present invention, mainly contain 2 aspects, specifically describe as follows:
A, Smoke Sensor detection signal: if there is fire or smoke signal triggers, be the present invention's action of threading off at once, to protect whole release and electrical network relevant device;
B, inspection switch input: if due to after this release threads off, after substantially in not triggering state.Whether maintainer overhauls, and when opening trip gear, needs to trigger once, so that system is known maintenance personal, keeped in repair.If confirm to keep in repair, detect while needing to thread off the signal moving, carry out the normal action of threading off.
The contact base 21 of fuse deck 5 is effects of fixed support plate 22 and lower end copper bar terminal block 23, the centre of contact 24 has above a movable axis extension spring hangs over, be subject to extension spring 25 to pull the strength of rear contact 24 to distribute to four contacts 24 again to the semicircle at contact 24 two ends, the movable axis 34 of the centre of each two contacts 24 of left and right can contact 31 monolithics when stressed pulling force distributed uniform.The semicircle of lower end and contact base 21 contact in the situation that keeping pulling force, the fuse cutter sheet contact of the semicircle of upper end and reeve contacts in the situation that keeping pulling force, guarantees that crucial contact point is in operation keep pressure always and can not lose pressure because of the variation of temperature
During assembling, switch support 1 is insulating temperature resistant meterial, using fuse deck 5(electric-conductor) be fixed in the above after as the fixed contact of switch, then fuse cabin 4 and switch support 1 are fixed together (preventing fuse deck 5 exposed conducting), complete switch rear portion and install.Three fuses 6 are contained on switch cover 3 to the moving contact as switch, more together insert switch rear portion after switch knob 7 and switch cover 3 are fitted together, form the lower part of switch.Then release 2 is fixed on to switch upper end, dropout ripping bar 16 is installed, installation.
During concrete use, first the energy storage stayed mast 11 on release 2 is forwards moved to energy storage position, when there is three-phase shortcircuit electric current, the fuse 6 meeting fusing disengagement failure electric currents of switch bottom, the release 2 on top does not participate in work, when there is three overload currents, may there is the nonsynchronous situation of fusing speed in the fuse 6 of switch bottom, at this moment the release 2 of upper end is by being arranged on the detection line of each fuse 6 lower end, the first circuit of fusing detected, the circuit board 8 of release can send after detecting as the instruction that phase shortage keeps threading off afterwards for three seconds (the time delay object of three seconds is that electric arc is too large when preventing that other two electric currents are excessive causes fuse and dop to leave), if other two also fusing proof electric current is certainly very little after three seconds, at this moment release 2 actions pull dropout ripping bar 16, dropout ripping bar 16 moves forward 20 millimeters fuse 6(moving contact by strength transmission to switch cover 3 lower end pull switchs lids 3) from fuse dop 5(fixed contact) pull out, disconnect three-phase line, finish the work, occurring one mutually or the large current fusing of two-phase, when residue is normal current mutually, release 2 can be opened switch by detection fuse 6 lower end time delay three seconds (can not burn lower end motor in three seconds) makes fuse 2 leave 20 millimeters of fuse decks, disconnects three-phase line, finishes the work.
When running into above-mentioned described line fault, fuse 2 lower ends that fuse in switch can be electroless state, the detection line of this point is on the circuit board 8 of release 2, circuit board 8 is through processing, after three seconds, to relay, signal and to allow relay open state and become closure state from long, reciprocal three times, the electric current that has 24V/0.5A when closed flows to energising demagnetization permanent magnet 13, energising demagnetization permanent magnet 13 has the suction of 25kg to obtain electric rear rapid demagnetization originally to make original sucker 14 together with 13 suctions of energising demagnetization permanent magnet to switch rear portion, move 20 millimeters under the pulling of extension spring 15, pull the upper end of dropout ripping bar 16 to take the central point of dropout ripping bar 16 simultaneously and move 20 millimeters as axle center to switch rear portion, the lower end of dropout ripping bar 16 is corresponding to mobile 20 millimeters of switch front portion, anterior mobile 20 millimeters to switch of the switch covers 3 of pull switch, separate fuse 2 and fuse deck 5, execution disconnects whole circuit.
As shown in Fig. 8-12, composite isolating switch of fusing open-phase protection type fuse described in the embodiment of the present invention 2, comprise bar shaped isolating switch and release 2, described bar shaped isolating switch comprises switch support 1 and switch cover 3, one side of switch support 1 is provided with switch cover 3, one side of switch support 1 is provided with switch cover 3, the opposite side of switch support 1 is provided with fuse cabin 4, the top in fuse cabin 4 is provided with fuse deck 5, the top of fuse deck 5 is provided with fuse 6, the left side at fuse 6 tops is provided with switch knob 7, described release 2 comprises circuit board 8, release shell 9 and release pedestal 10, one side of release pedestal 10 is established dropout switch 26, the opposite side of release pedestal 10 fastens release shell 9, the cavity inside forming between release shell 9 and release pedestal 10 is provided with circuit board 8, the below of release shell 9 is provided with energising demagnetization permanent magnet 13, one side of energising demagnetization permanent magnet 13 is provided with sucker 14, the opposite side of sucker 14 is provided with energy storage and promotes bucket 27, energy storage promotes bucket 27 and is provided with stage clip 28.
Described fuse deck 5 comprises contact base 21, the bottom surface of contact base 21 is copper bar wiring face 29, the two ends, left and right of contact base 21 end faces arrange respectively two groups of symmetrical contact supporting plates 30, some contacts 31 are evenly set between corresponding contact supporting plate 30, between each contact 31 and contact supporting plate 30, by pin 32, be fixedly connected with, between two adjacent contacts 31, be provided with and hook spring 33, the top that hooks spring 33 is resisted against on the movable axis 34 at contact 31 middle parts.
Main original paper energising demagnetization permanent magnet 13 and the sucker 14 of the release of the present invention top belong to the main original paper of release 2, the object that can reach dropout after this element and power liftgate combination, has advantages of than traditional mechanical system dropout stability simple in structure simultaneously and there will not be by force mechanism blockage.
During assembling, switch support 1 is insulation heatproof part, after being fixed in the above, fuse 6 decks (electric-conductor) as the fixed contact of switch, then fuse cabin 4 and switch support are fixed together (preventing fuse deck exposed conducting), and the installation of switch rear portion.Three fuses 6 are contained in respectively on switch cover 3 to the moving contact as switch, after again switch knob 7 and switch cover 3 being fitted together, together insert switch rear portion, form the lower part of switch, then release 2 is fixed on to switch upper end, switch knob 7 extension plates are installed, installation.
During work, first the energy storage on release 2 is promoted to bucket 27 and be pressed onto energy storage position, when there is three-phase shortcircuit electric current, the fuse 6 meeting fusing disengagement failure electric currents of switch bottom, the release 2 on top does not participate in work, when there is three overload currents, may there is the nonsynchronous situation of fusing speed in the fuse 6 of switch bottom, at this moment the release 2 of upper end is by being arranged on the detection line of each fuse 6 lower end, the first circuit of fusing detected, then the circuit board 8 of release 2 can send after detecting as instruction that phase shortage keeps threading off afterwards for three seconds (the time delay object of three seconds is that electric arc is too large when preventing that other two electric currents are excessive causes fuse and dop to leave), if other two also fusing proof electric current is certainly very little after three seconds, at this moment release action pull switch handle extension plate, switch knob extension plate drives switch knob 7 to 80 millimeters of previous crops arcuate movement, by three fuse 6(moving contacts) extract fuse deck 5(fixed contact), disconnect three-phase circuit, execution, occurring one mutually or the large current fusing of two-phase, when residue is normal current mutually, release 2 still can be opened switch by detection fuse 6 lower end time delay three seconds (can not burn lower end motor in three seconds) makes fuse leave fuse deck 5 with arc, disconnects whole circuit, finishes the work.
When running into above-mentioned described line fault, the detection line of the lower end of the fuse 6 fusing in switch can become electroless state, this detection line is on the circuit board 8 of release 2, circuit board 8 is through processing, after three seconds, to relay, signal and to allow relay open state and become closure state from long, reciprocal three times, the electric current that has 24V/0.5A when closed flows to energising demagnetization permanent magnet 13, electricity demagnetization permanent magnet 13 electric rear rapid demagnetization made the sucker 14 of original and electric demagnetization permanent magnet 13 together with inhaling under the promotion of stage clip 28 to 80 millimeters of the anterior promotions of switch, promoting threads off simultaneously does circular arc motion to switch the place ahead with switch extension rod, drive switch knob 7, switch cover 3, fuse 6 motions, by three fuse 6(moving contacts) extract fuse deck 5(fixed contact), disconnect three-phase circuit, disconnect whole circuit.
The centre of every two contacts 31 of fuse deck 5 has the hook spring 33 of a movable axis 34 to hook in the above, hooked strength that spring 33 pulls rear contact 31 and distributed to four contacts 31 again to the semicircle at contact 31 two ends, the movable axis 34 in the middle of each two contacts 31 of left and right can contact 31 monolithics when stressed pulling force distributed uniform.The semicircle of lower end and contact base 21 contact in the situation that keeping pulling force, the fuse cutter sheet contact of the semicircle of upper end and reeve contacts in the situation that keeping pulling force, guarantees that crucial contact point is in operation keep pressure always and can not lose pressure because of the variation of temperature.
Claims (6)
1. a composite isolating switch of fusing open-phase protection type fuse, comprise bar shaped isolating switch and release (2), it is characterized in that: described bar shaped isolating switch comprises switch support (1) and switch cover (3), one side of switch support (1) is provided with switch cover (3), the opposite side of switch support (1) is provided with fuse cabin (4), the inside in fuse cabin (4) is provided with fuse deck (5), three fuses (6) are from top to bottom equipped with in the top of fuse deck (5), and the left side at fuse (6) top is provided with switch knob (7), described release (2) comprises circuit board (8), release shell (9) and release pedestal (10), one side of release pedestal (10) is provided with energy storage pull bar (11) and release functional switch (12), the opposite side of release pedestal (10) fastens release shell (9), the cavity inside forming between release shell (9) and release pedestal (10) is provided with circuit board (8), the below of release shell (9) is provided with energising demagnetization permanent magnet (13), one side of energising demagnetization permanent magnet (13) is provided with sucker (14), sucker (14) connects extension spring one (15), extension spring one (15) is connected with fuse cabin (4) by de-mouthful of ripping bar (16), the upper end of described fuse (6) connect respectively introduce release (2) three-phase electricity A phase, B phase and C as the power taking of release (2) with contrast circuit with lower end, A phase, B phase and the C that the lower end of fuse (6) connects respectively introducing release (2) three-phase electricity is as the detection of release (2) and contrast circuit with upper end.
2. composite isolating switch of fusing open-phase protection type fuse according to claim 1, is characterized in that: the width of described switch support (1) is identical with the width of fuse cabin (4) and the width of release (2).
3. composite isolating switch of fusing open-phase protection type fuse according to claim 2; it is characterized in that: described circuit board (8) comprises rectification circuit module (17), residue phase power failure detection circuit module (18), output circuit module (19) and main control singlechip (20), main control singlechip (20) is connected with rectification circuit module (17), residue phase power failure detection circuit module (18) and output circuit module (19) respectively by circuit.
4. composite isolating switch of fusing open-phase protection type fuse according to claim 3; it is characterized in that: described fuse deck (5) comprises contact base (21) and supporting plate (22); the bottom of contact base (21) arranges copper bar terminal block (23); the two ends at contact base (21) top are fixed support plate (22) respectively; the both sides of supporting plate (22) arrange respectively contact (24), and extension spring two (25) is set between two supporting plates (22).
5. composite isolating switch of fusing open-phase protection type fuse according to claim 1, is characterized in that: the opposite side of sucker (14) is provided with energy storage and promotes bucket (27), and energy storage promotes bucket (27) and is provided with stage clip (28).
6. composite isolating switch of fusing open-phase protection type fuse according to claim 5, it is characterized in that: described fuse deck (5) comprises contact base (21), the bottom surface of contact base (21) is copper bar wiring face (29), the two ends, left and right of contact base (21) end face arrange respectively symmetrical two groups of contact supporting plates (30), between corresponding contact supporting plate (30), some contacts (31) are evenly set, between each contact (31) and contact supporting plate (30), by pin (32), be fixedly connected with, between adjacent two contacts (31), be provided with and hook spring (33), the top that hooks spring (33) is resisted against on the movable axis (34) at contact (31) middle part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110209958.8A CN102412086B (en) | 2011-07-26 | 2011-07-26 | Fusing phase-lacking protection fuse composite disconnector |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110209958.8A CN102412086B (en) | 2011-07-26 | 2011-07-26 | Fusing phase-lacking protection fuse composite disconnector |
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| CN102412086A CN102412086A (en) | 2012-04-11 |
| CN102412086B true CN102412086B (en) | 2014-04-16 |
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| CN201110209958.8A Expired - Fee Related CN102412086B (en) | 2011-07-26 | 2011-07-26 | Fusing phase-lacking protection fuse composite disconnector |
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| CN113284773B (en) * | 2021-05-26 | 2022-12-20 | 上海电器科学研究所（集团）有限公司 | Switch with built-in current-limiting fuse |
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| CN86102716A (en) * | 1985-04-22 | 1986-10-22 | 联合电子工业有限公司 | The operating mechanism of switching device |
| CN201048281Y (en) * | 2007-03-06 | 2008-04-16 | 瑞安市工泰电器有限公司 | Motor protection breaker |
| CN201160218Y (en) * | 2007-12-21 | 2008-12-03 | 王卫东 | Plastic-shell-type dynamoelectric integrated three phase AC electric motor protector with energy accumulation clasher |
| CN202134447U (en) * | 2011-07-26 | 2012-02-01 | 米而电气（上海）有限公司 | Composite isolating switch of fusing open-phase protection type fuse |
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2011
- 2011-07-26 CN CN201110209958.8A patent/CN102412086B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86102716A (en) * | 1985-04-22 | 1986-10-22 | 联合电子工业有限公司 | The operating mechanism of switching device |
| CN201048281Y (en) * | 2007-03-06 | 2008-04-16 | 瑞安市工泰电器有限公司 | Motor protection breaker |
| CN201160218Y (en) * | 2007-12-21 | 2008-12-03 | 王卫东 | Plastic-shell-type dynamoelectric integrated three phase AC electric motor protector with energy accumulation clasher |
| CN202134447U (en) * | 2011-07-26 | 2012-02-01 | 米而电气（上海）有限公司 | Composite isolating switch of fusing open-phase protection type fuse |
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| Publication number | Publication date |
|---|---|
| CN102412086A (en) | 2012-04-11 |
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