CN2350865Y - Four-pole switch for electric appliance - Google Patents
Four-pole switch for electric appliance Download PDFInfo
- Publication number
- CN2350865Y CN2350865Y CN 98210628 CN98210628U CN2350865Y CN 2350865 Y CN2350865 Y CN 2350865Y CN 98210628 CN98210628 CN 98210628 CN 98210628 U CN98210628 U CN 98210628U CN 2350865 Y CN2350865 Y CN 2350865Y
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Abstract
The utility model relates to a four-pole switch for an electric appliance, which has the functions of overload protection, over-current protection and the line-breaking protection of a zero line. The rear end part of a movable joint-force brake of an N pole of the utility model is electrically connected with a leading-out terminal of the N pole, and the rear end part of the movable joint-force brake of the N pole is connected with a tripping controller. The tripping controller is connected with a star-shaped connecting end of a three-phase leading-out terminal of the four-pole switch, and an output terminal of the tripping controller is connected with a corresponding shunt release of the N pole. The tripping controller is provided with a power supply, a tripping control circuit is arranged at the tripping controller, and the tripping control circuit is composed of a zero potential comparison circuit and a zero potential controlling and calculating circuit. The utility model can be used for a civil power supply system, and the utility model is used for protecting the safety of a human body and equipment.
Description
The utility model relates to a kind of by overcurrent or other unusual electric operating modes and the protection switch that moves.
At present, the protection switch of civilian low-voltage electrical apparatus distribution system has the automatic air-break switch with compound dropout, and this switch can only be carried out protection to overload, overcurrent (the being short circuit) accident of distribution line.Be added with the switch of protection against leakage; and set up the special-purpose earth connection that links to each other with zero line in power unit (as building) porch; after comprising iterative earthing; also just play safing effect under certain conditions; and can not be to the neutral line break accident of its supply line; on zero line, produce the floating-potential jeopardize household electrical appliance and personal safety and make reliable protection, so and cause snowslide phenomenon, cause scaling loss household electrical appliance in blocks and jeopardize the accident of personal safety.
The purpose of this utility model is to provide a kind of and not only has overload, overcurrent protection, and has the four pole low-voltage appliance switch of neutral line break accident protection function.
The technical solution of a kind of four utmost point appliance switches of the utility model is to be provided with input terminal, arc control device, insulation interlock link rod, insulation interlock rotating shaft, shunt release, outlet terminal, the opening magnetosphere, the moving sheet that closes of magnetosphere, back-moving spring, bimetal leaf, the top fixture block, the moving disconnecting link that closes, manual wrench, thread off and link up with and slide block, its special character is that the moving disconnecting link rearward end of closing of this four-pole switch N utmost point is electrically connected with this N utmost point outlet terminal, then be connected with a tripping operation controller, this tripping operation controller also connects end with star that this four-pole switch three-phase outlet terminal is connected into and links to each other, and the output of tripping operation controller is connected in this N shunt release extremely accordingly; Said tripping operation controller is provided with power supply, and is provided with the tripping operation control circuit that is made of control of zero potential comparison circuit and zero potential and counting circuit.
The power supply of said tripping operation controller is the DC power supply that is obtained through step-down and rectification by two-phase or single phase alternating current power supply.
Said zero potential comparison circuit does not have LED 2 or diode, this light-emitting diode or diode anode link to each other with said N utmost point outlet terminal, negative electrode connects resistance R 4 and potentiometer W after connecting voltage-stabiliser tube D5, then the star that connects said three-phase outlet terminal meets end N ', this star also connects between end and the three-phase outlet terminal L1, L2, L3 and connects capacitor C 1, C2, C3 respectively, and resistance R 1, R2, R3 distinguish cross-over connection in capacitor C 1, C2, C3 two ends.
Said zero potential control is established light lotus root integrated circuit block IC1, timing ic piece IC2 and light lotus root integrated circuit block IC3 with counting circuit; 1 pin of IC1 connects the LED2 negative electrode, and 2 pin connect the LED2 anode, and 5 pin connect said DC power supply, and 6 pin connect dielectric capacitance C7 anode after connecting resistance R 6, the C7 minus earth, and 4 pin connect the contact of R6 and C7 and connect resistance R 7; 4 pin of IC2 and the contact of 8 pin connect said DC power supply, and the contact that 7 pin connect resistance R 7,2 pin and 6 pin connects 4 pin of IC1, and 5 pin connect capacitor C 8 back ground connection, 1 pin ground connection, and 3 pin connect 2 pin of IC3; 1 pin of IC3 connects resistance R 8 back running fire optical diode LED3 negative electrodes, the LED3 anode connects said DC power supply, 6 pin connect the control utmost point that connects bidirectional triode thyristor BCR after the resistance R 9,4 pin connect the major loop of bidirectional triode thyristor BCR and connect separation release BK one end, the BK other end connects phase line end L1, and the other end of BCR connects phase line end L3.
Tripping operation controller in this switch can be provided with a housing and be installed on the extremely corresponding lower space of N in this switch, a housing also can be set be installed on quite original four-pole switch housing outside this switch of formation.
This four utmost point appliance switches owing to be provided with comprise the tripping operation controller of zero potential comparison circuit and zero potential control and counting circuit, so can behind the power end neutral line break, produce the voltage that jeopardizes personal and device security the time, automatic trip.According to the interrelated data of safety utilization of electric power, can check in, to civilian low-voltage distributing line, the variation that its zero potential allows, U
NN 'For specified phase voltage Ue value+5%～-10%.We are not difficult to calculate, and the overvoltage of phase power load is+5%Ue when neutral line break, and promptly 11 volts the time, the maximum of the under voltage of other phases is-9.4%Ue that promptly ≈ is 20 volts; Press the low-voltage distributing line that current specifications is provided with, U under the normal condition
NN 'Less than 5%Ue.We can set operation voltage Up 〉=22 volt of this switch trip control circuit in view of the above.When abnormal conditions occurring, as neutral line break, U
NN 'In the time of＞22 volts, the tripping operation control circuit of this switch will be connected the coil that separates release by inverse time-lag, and the insulation interlock rotating shaft that drives in this switch is rotated, and makes switch trip therefrom, reaches the protection person and electrical appliance purpose of safety.This switch can be to set up the tripping operation controller to form on original four-pole switch basis, and this tripping operation controller architecture element is simple thereby volume is less, and cost is also low.
Below in conjunction with description of drawings execution mode of the present utility model.
Fig. 1 is the utility model four utmost point electrical switch structure schematic diagrames;
Fig. 2 is a tripping operation control circuit schematic diagram.
1 one kind of four utmost point appliance switch of embodiment, if four input terminals 1 and corresponding arc control device 2, separate that release 5 outlet terminals 9, opening magnetosphere 10, magnetosphere movingly close sheet 11, back-moving spring 12, bimetal leaf 13, top fixture block 14, moving formation of closing disconnecting link 15, manual wrench 16, spring 17, lead 18, thread off hook 19, slide block 20 and support 21 parts is identical with existing four utmost point air switches at insulation interlock link rod 3, insulation interlock rotating shaft 4.The moving disconnecting link rearward end of closing of this switch N utmost point is electrically connected with this N utmost point outlet terminal, then be connected with a tripping operation controller 7 through input lead 8, this tripping operation controller and with the star of this four-pole switch three-phase outlet terminal 9 and connect end and link to each other, tripping operation controller output end lead 6 is connected in this N shunt release extremely accordingly; Tripping operation controller 7 is provided with power supply, this power supply by AC power between two-phase L1, L2 through series capacitance C4, C5 step-down, and after the rectifier bridge single-phase full wave rectification of diode D1～D4 composition, export 12 volts of DC power supply Ucc, carry out voltage stabilizing and filtering by voltage-stabiliser tube D6 and dielectric capacitance C6 again, and form voltage by resistance R 5 and LED 1 and indicate the loop, be that LED1 was bright after four-pole switch closed a floodgate, the expression power load has been connected to power supply.Tripping operation controller 7 also is provided with the tripping operation control circuit that is made of control of zero potential comparison circuit and zero potential and counting circuit.Wherein, the zero potential comparison circuit is provided with LED 2 or diode, this light-emitting diode or diode anode link to each other with said N utmost point outlet terminal, negative electrode connects resistance R 4 and potentiometer W after connecting voltage-stabiliser tube D5, then the Y-connection end N ' that connects said three-phase outlet terminal, this star also connects between end and the three-phase outlet terminal L1, L2, L3 and connects capacitor C 1, C2, C3 respectively, and resistance R 1, R2, R3 distinguish cross-over connection in capacitor C 1, C2, C3 two ends.Zero potential control in the tripping operation control circuit is established light lotus root integrated circuit block IC1, timing ic piece IC2 and light lotus root integrated circuit block IC3 with counting circuit; 1 pin of IC1 connects the LED2 negative electrode, and 2 pin connect the LED2 anode, and 5 pin connect said DC power supply, and 6 pin connect dielectric capacitance C7 anode after connecting resistance R 6, the C7 minus earth, and 4 pin connect the contact of R6 and C7 and connect resistance R 7; 4 pin of IC2 and the contact of 8 pin connect said DC power supply, and the contact that 7 pin connect resistance R 7,2 pin and 6 pin connects 4 pin of IC1, and 5 pin connect capacitor C 8 back ground connection, 1 pin ground connection, and 3 pin connect 2 pin of IC3; 1 pin of IC3 connects resistance R 8 back running fire optical diode LED3 negative electrodes, the LED3 anode connects said DC power supply, 6 pin connect the control utmost point that connects bidirectional triode thyristor BCR after the resistance R 9,4 pin connect the major loop of bidirectional triode thyristor BCR and connect separation release BK one end, the BK other end connects phase line end 11, and the other end of BCR connects phase line end L3.
The Y-connection end N ' that this switch trip control circuit three-phase L1, L2, L3 are connected into is zero point, and N end that is connected and between N ' voltage i.e. zero bias-voltage U
NN ', it forms a closed-loop path through potentiometer W, resistance R 4, voltage-stabiliser tube D5 and LED 2 (or diode).According to the characteristic of diode, it can press U by LED2
NN 'Size, corresponding output is by the electric current of the index variation input 1 and 2 to light lotus root IC1; Voltage-stabiliser tube D5 is a reverse graft, can limit and guarantees U with it
NN 'In the time of≤22 volts, make not output voltage of LED2; Change the size of W and R4, can adjust U
NN '(0) size that (makes the minimum bias value of switch motion) can be adjusted the size (to control the deferred action time of this tripping operation controller) of LED2 output signal again; Work as U
NN 'In the time of＞22 volts, LED2 is bright, illustrate that this moment, zero line broke and bias voltage has surpassed permissible value, it can make the IC1 output have electric current to pass through, conversion transmission through IC1, its power end 5 foots can charge to dielectric capacitance C7 through output 4 foots, through after the certain time-delay, when the charging voltage on the C7 reached 2/3Ucc, timing circuit IC2 got final product rotary movement, and its output 3 is connected the input (1 and 2) of light lotus root IC3, then Ucc is through LED 3, resistance R 8 is formed a path with IC3, and LED3 is bright, and the expression four-pole switch should trip; Change through IC3; it is electric that its output 4 and 6 gets the control utmost point of bidirectional triode thyristor BCR through resistance R 9 immediately, triggers its major loop conducting, connects the coil that separates release BR; the mechanical self-locking device of this switch is threaded off and automatic trip, reach the purpose of the protection person and device security.
About certain U
NN 'Under delay time, except that adjusting W, also can adjust the size (R6 is the feedback circuit of IC1) of R6, the charging rate of control capacitance C7, the purpose of command signal is sent in the time-delay that reaches control tripping operation controller.C8 is an anti-interference capacitor, and R1, R2, R3 are discharge resistance, and R4, R5, R8, R9 are current-limiting resistance, and R7 is a discharge resistance, works as U
NN 'The time that exists does not reach corresponding giving when deciding operate time under this voltage, the R7 discharge, and until returning normality, can the work of normal reliable ground to guarantee switch.
This switch trip controller relevant elements parameter with model is: ac capacitor C1=C2=C3=0.1 μ F exchanges 250 volts; C4=C5=1 μ F exchanges 250 volts; Dielectric capacitance C6=470 μ F16 volt, C7=100 μ F16 volt; It is U4730.047 μ F that sheet holds C8; Resistance R 1=R2=R3=3M Ω 1/4W, R4=R5=12K1/4W, R6=180K1/4W, R7=100K1/4W, R8=3K1/4W, R9=300 Ω 1/2W; Potentiometer W is E22322K; Integrated package: light lotus root IC1 is that 4N25, timer IC2 are H7555, and light lotus root IC3 is MOC3062; Bidirectional triode thyristor BCR is TLC-336A; Rectifier bridge D1～D4 is circle bridge W08M; Voltage-stabiliser tube D5 is that BZX55C12V:D6 is IN4742A; General smooth type LED 1 is φ 3 diameter greens, and LED2 is φ 3 diameter yellow, and LED3 is φ 3 diameter redness.So select, also suitably adjust the size (magnitude of voltage that comprises D6, the size of R6 and the transfer ratio of IC1) of W, can guarantee that this switch is at different zero bias-voltage U
NN 'Under trip time, be enough to meet the requirement of the national regulation person and device security.
Claims (6)
1, a kind of four utmost point appliance switches, be provided with input terminal (1), arc control device (2), insulation interlock link rod (3), insulation interlock rotating shaft (4), separate release (5), outlet terminal (9), opening magnetosphere (10), the moving sheet (11) that closes of magnetosphere, back-moving spring (12), bimetal leaf (13), top fixture block (14), the moving disconnecting link (15) that closes, manual wrench (16), thread off and link up with (19) and slide block (20), the moving disconnecting link rearward end of closing that it is characterized in that this four-pole switch N utmost point is electrically connected with this N utmost point outlet terminal, then be connected with a tripping operation controller (7), this tripping operation controller also links to each other with Y-connection end that this four-pole switch three-phase outlet terminal (9) is connected into, and the output of tripping operation controller is connected in the extremely corresponding shunt release of this N; Said tripping operation controller is provided with power supply, and is provided with the tripping operation control circuit that is made of control of zero potential comparison circuit and zero potential and counting circuit.
2, four utmost point appliance switches as claimed in claim 1, the power supply that it is characterized in that said tripping operation controller are the DC power supply that is obtained through step-down and rectification by two-phase or single phase alternating current power supply.
3, four utmost point appliance switches as claimed in claim 1 or 2, it is characterized in that said zero potential comparison circuit is provided with LED 2 or diode, this light-emitting diode or diode anode link to each other with said N utmost point outlet terminal, negative electrode connects resistance R 4 and potentiometer W after connecting voltage-stabiliser tube D5, then connect the star of said three-phase outlet terminal and connect end, this star also connects between end and the three-phase outlet terminal L1, L2, L3 and connects capacitor C 1, C2, C3 respectively, and resistance R 1, R2, R3 distinguish cross-over connection in capacitor C 1, C2, C3 two ends.
4, four utmost point appliance switches as claimed in claim 1 or 2 is characterized in that said zero potential is controlled and counting circuit is established light lotus root integrated circuit block IC1, timing ic piece IC2 and light lotus root integrated circuit block IC3; 1 pin of IC1 connects the LED2 negative electrode, and 2 pin connect the LED2 anode, and 5 pin connect said DC power supply, and 6 pin connect dielectric capacitance C7 anode after connecting resistance R 6, the C7 minus earth, and 4 pin connect the contact of R6 and C7 and connect resistance R 7; 4 pin of IC2 and the contact of 8 pin connect said DC power supply, and the contact that 7 pin connect resistance R 7,2 pin and 6 pin connects 4 pin of IC1, and 5 pin connect capacitor C 8 back ground connection, 1 pin ground connection, and 3 pin connect 2 pin of IC3; 1 pin of IC3 connects resistance R 8 back running fire optical diode LED3 negative electrodes, the LED3 anode connects said DC power supply, 6 pin connect the control utmost point that connects bidirectional triode thyristor BCR after the resistance R 9,4 pin connect the major loop of bidirectional triode thyristor BCR and connect separation release BK one end, the BK other end connects phase line end L1, and the other end of BCR connects phase line end L3.
5, four utmost point appliance switches according to claim 1, the controller (7) that it is characterized in that tripping is provided with a housing.
6, four utmost point appliance switches according to claim 1, the controller (7) that it is characterized in that tripping are installed on the extremely corresponding lower space of N in this four-pole switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98210628 CN2350865Y (en) | 1998-01-26 | 1998-01-26 | Four-pole switch for electric appliance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98210628 CN2350865Y (en) | 1998-01-26 | 1998-01-26 | Four-pole switch for electric appliance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2350865Y true CN2350865Y (en) | 1999-11-24 |
Family
ID=33965589
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98210628 Expired - Fee Related CN2350865Y (en) | 1998-01-26 | 1998-01-26 | Four-pole switch for electric appliance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2350865Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102142326A (en) * | 2010-12-07 | 2011-08-03 | 扬州爱斯凯电气有限公司 | Dual-power selector switch |
-
1998
- 1998-01-26 CN CN 98210628 patent/CN2350865Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102142326A (en) * | 2010-12-07 | 2011-08-03 | 扬州爱斯凯电气有限公司 | Dual-power selector switch |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |