CN2202367Y - Three-phase four-function automatic protective switch - Google Patents
Three-phase four-function automatic protective switch Download PDFInfo
- Publication number
- CN2202367Y CN2202367Y CN 93219523 CN93219523U CN2202367Y CN 2202367 Y CN2202367 Y CN 2202367Y CN 93219523 CN93219523 CN 93219523 CN 93219523 U CN93219523 U CN 93219523U CN 2202367 Y CN2202367 Y CN 2202367Y
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- CN
- China
- Prior art keywords
- phase
- voltage
- switch
- connects
- electromagnet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 230000001681 protective effect Effects 0.000 title description 2
- 238000000819 phase cycle Methods 0.000 claims abstract description 8
- 239000003990 capacitor Substances 0.000 claims abstract description 3
- 229910052710 silicon Inorganic materials 0.000 claims abstract 3
- 239000010703 silicon Substances 0.000 claims abstract 3
- 239000003381 stabilizer Substances 0.000 claims description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 claims description 4
- 230000005611 electricity Effects 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 2
- 239000011148 porous material Substances 0.000 claims description 2
- 230000000087 stabilizing effect Effects 0.000 claims description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims 1
- 238000007599 discharging Methods 0.000 claims 1
- 229910052742 iron Inorganic materials 0.000 claims 1
- 238000009434 installation Methods 0.000 abstract description 2
- 238000005485 electric heating Methods 0.000 abstract 1
- 239000008236 heating water Substances 0.000 abstract 1
- 230000002633 protecting effect Effects 0.000 description 3
- 230000001012 protector Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
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- Emergency Protection Circuit Devices (AREA)
Abstract
The utility model relates to a four function automatic protection switches of three-phase belongs to the electrical switch class, has a four function protection of a tractor: the phase sequence, phase loss, undervoltage and overcurrent protection switch is a replacement product of the real 'air automatic switch'. A control circuit board (3) for controlling an electromagnet (2) is adhered to a gap in a shell cover of an original automatic air switch (1); and the control circuit board (3) is composed of 11 resistors, 4 controllable silicon, 8 capacitors, 6 diodes, 3 voltage-stabilizing tubes, an infrared light-emitting diode and a photoelectric tube. The novel multifunctional electric heating water heater has the advantages of scientific and reasonable design, convenience in installation, safety and reliability in use, low cost and the like.
Description
The utility model relates to a kind of three-phase four function Automatic Protection Switchings; belong to the electric switch class; having phase sequence, open-phase protection, under-voltage protection and overcurrent protection four function and protecting switches when being applicable to three phase mains, is the regeneration product of reality " air automatic switch ".
Known " air automatic switch " only has overcurrent protection function, its structure generally to have two kinds: a kind of is to seal in tripping mechanism and electromagnet in three phase mains, utilizes electromagnetic force control tripping mechanism; Another kind is to adopt the temperature-sensitive bimetal leaf to replace electromagnet, and the sheet metal heating is out of shape and is promoted tripping mechanism when supercurrent, realizes the protection electric equipment.Chinese patent has the patent application of many single-phase function and protecting switches by retrieval, as: open phase protection ((7-43 volume); Single-phase automatic switch of electric leakage (6-09); Phase failure dropout switch protector (6-05); A kind of phase failure protector (6-32); Earth leakage circuit-breaker (5-16) or the like is totally 23 examples, but do not see structure, the function that the present invention relates to.
The purpose of this utility model is to increase a control circuit board and an electromagnet in former air automatic switch, realizes the switch of phase sequence, phase shortage, under-voltage and overcurrent four function and protectings, and with low cost, design science is reasonable, and is easy for installation, safe and reliable.
The concrete solution of the utility model can describe in detail with the following drawings.
Fig. 1 is the utility model structural representation;
Fig. 2 is the utility model control circuit board line map.
A kind of three-phase four function Automatic Protection Switchings, it comprises former air automatic switch, it is characterized in that: at the control circuit board (3) that can control electromagnet (2) of the casing cover internal pore place of former air automatic switch cementation, and guarantee that the dropout rotating shaft (4) that electromagnet (2) is contained in the former air automatic switch (1) is other, attract each other through former iron core and rotating shaft and realize suction, take off control; And control circuit board (3) is made up of 11 resistors (R1-R11), 8 capacitors of 4 controllable silicons (T1-T4) (C1-C8), 6 common rectification triodes (D1-D6) and 3 voltage-stabiliser tubes (D7-D9) and an infrarede emitting diode and a phototriode.Each element of control circuit board (3) connects as follows: the trigger electrode of first phase in the three phase mains (as the B phase) serial connection R1, R2, T1, and the negative electrode of T1 connects the 2nd phase (as the C phase) and makes common ground, forms the triggering loop of T1; On the series connection point of C1 one termination R1 and R2, other end ground connection; D1 and R3 parallel connection, its negative pole connect trigger electrode, the plus earth of T1; The 3rd phase in the three phase mains (as the A phase) one tunnel serial connection R4, infrarede emitting diode, T2 anode, the negative electrode of T2 connects the anode of T1); The anode of another road serial connection R6, R7 to T1 forms the load circuit of T1; Voltage-stabiliser tube D7 negative pole is connected in the series connection of R6, R7, and positive pole connects the trigger current path of the trigger electrode formation T2 of T2; C2 and R5 parallel connection are between the trigger electrode and negative electrode of T2; C3 is in parallel with R7; The 1st phase and the 2nd phase voltage insert the bridge rectifier that D3, D6 and D4, D5 form respectively after C7, C8 step-down current limliting, pass through D7 and C4 voltage stabilizing, filtering again, formation+24V power supply; The phototriode pipe collector connects+24V, and emitter connects the C6 positive pole, and the C6 minus earth forms the charge circuit of C6; R10, R11 and D2 are connected between photoelectric tube emitter and public ground, and the T4 base stage connects R10, R11 series connection point, the grounded emitter of T4, collector electrode and R9 one end join, another termination of R9+24V power supply, the D8 negative pole also connects the T4 collector electrode, and positive pole connects the T3 trigger electrode, its series connection point and indirect C5 in parallel in ground and R8; The coil of electromagnet (2) is connected on+form the load of T3, T3 minus earth between the anode of 24V power supply and T3.
Above-mentioned three-phase four function Automatic Protection Switchings compared with prior art, have increased the three-phase function, realize a machine four functions, and it specifically has: (1) phase sequence---when phase sequence changes, and the switch automatic trip; (2) open-phase protection---lack arbitrary phase time in the three-phase, the switch automatic trip; (3) under-voltage protection---when three-phase voltage is on the low side, the switch automatic trip; (4) overcurrent protection---the equal automatic trip of arbitrary phase overcurrent in the three-phase.In addition, it has and does not change three inlet wires of former automatic air-break switch and three outlets; Do not change former automatic air-break switch volume shape; Every only increases a few yuan costs and just thoroughly deals with problems, and has realized the present utility model purpose.
Each element type selecting embodiment table of control circuit board of the present utility model (3) is as follows:
When phase sequence normal, but brownout, T
1The conducting electric current is at R
7Pressure drop low excessively, be not enough to puncture D
7, T like this
2Not conducting equally, also not conducting of photoelectric tube, C
6Can not get boost charge, T
4End T by saturated transferring to
3The conducting electromagnet gets electric work and drives tripping mechanism work, and the switch of cutting off the electricity supply makes negative cutting with protection.
In the circuit diagram, C
7, C
8, D
3～D
6, D
9, C
4These several elements are electromagnet DC24V power supply.
Claims (2)
1, a kind of three-phase four function Automatic Protection Switchings, it comprises former air automatic switch, it is characterized in that: at the control circuit board (3) that can control electromagnet (2) of the casing cover internal pore place of former air automatic switch cementation, and guarantee that the dropout rotating shaft (4) that electromagnet (2) is contained in the former air automatic switch (1) is other, attract each other through former iron core and rotating shaft and realize suction, take off control; And control circuit board (3) is made up of 11 resistors (R1-R11), 8 capacitors of 4 controllable silicons (T1-T4) (C1-C8), 6 common rectification triodes (D1-D6) and 3 voltage-stabiliser tubes (D7-D9) and an infrarede emitting diode and a phototriode.
2, three-phase four function Automatic Protection Switchings according to claim 1, it is characterized in that: each element of control circuit board (3) connects as follows: the trigger electrode of first phase in the three phase mains (as the B phase) serial connection R1, R2, T1, the negative electrode of T1 connects the 2nd phase (C phase) and makes common ground, forms the triggering loop of T1; On the series connection point of C1 one termination R1 and R2, other end ground connection; D1 and R3 parallel connection, its negative pole connect trigger electrode, the plus earth of T1; The negative electrode of the 3rd phase in the three phase mains (as the A phase) one tunnel serial connection R4, infrarede emitting diode, T2 anode, T2 connects the anode of T1; The anode of another road serial connection R6, R7 to T1 forms the load circuit of T1; Voltage-stabiliser tube D7 negative pole is connected on the series connection point of R6, R7, and positive pole connects the trigger current path of the trigger electrode formation T2 of T2; C2 and R5 are connected in parallel between the trigger electrode and negative electrode of T2; C3 is in parallel with R7; The 1st phase and the 2nd phase voltage insert the bridge rectifier that D3, D6 and D4, D5 form respectively after C7, C8 step-down current limliting, pass through D7 and C4 voltage stabilizing, filtering again, formation+24V power supply; The phototriode pipe collector connects+24V, and emitter connects the C6 positive pole, and the C6 minus earth forms the charge circuit of C6; R10, R11 and D2 are connected between photoelectric tube emitter and public ground, and the T4 base stage connects R10, R11 series connection point, the grounded emitter of T4, collector electrode and R9 one end join, another termination of R9+24V power supply, the D8 negative pole also connects the T4 collector electrode, and positive pole connects the T3 trigger electrode, its series connection point and indirect C5 in parallel in ground and R8; The coil of electromagnet (2) is connected on+form the load of T3, T3 minus earth between the anode of 24V power supply and T3.
Its Central Plains automatic air-break switch (1) model: DZ-10-100/330 ,～380V, 60A; Electromagnet (2) is removed primary coil, changes 0.2 red copper wire around 2000 circles.
Thus obtained three-phase four function Automatic Protection Switchings, its response time is to realize protection electrical equipment 5 seconds.
The operation principle of three-phase four function Automatic Protection Switchings is as follows:
(1) phase sequence principle
Correct when three-phase phase-sequence, and three-phase voltage is also just often, and in the one-period of three-phase voltage oscillogram, a certain moment first phase voltage is higher than second phase voltage, and third phase voltage also is higher than second phase voltage, like this, and controllable silicon T
1Trigger current is arranged, T
1Conducting, its conducting electric current resistance R of flowing through
6With R
7The time, at R
7The voltage of last generation is enough to puncture voltage-stabiliser tube D
7, controllable silicon T
2Also conducting, light-emitting diode have electric current by sending Infrared, and its light impinges upon on the photoelectric tube, and the photoelectric tube conducting is to C
6Charging, C
6Both end voltage is through D
2To T
4Base stage provides electric current, makes T
4Saturation conduction is at other moment in this cycle, T
1, T
2Photoelectric tube all ends, but C
6Be filled with voltage, its discharging current is to keep T
4Saturation conduction.When next cycle arrives, a certain moment T
1, T
2Photoelectric tube is conducting again, to C
6Boost charge goes round and begins again like this, C
6Be filled with voltage, its voltage is kept T always
4Saturated, T
3Be in cut-off state, electromagnetism iron wire bag does not have electric current always, and electromagnet is failure to actuate.Automatic switch is in normal operating conditions.
After three-phase phase-sequence changes, in the one-period of three-phase voltage, T
1, T
2The photoelectric tube homogeneous ends straight, C
6Owing to can not get boost charge, after its terminal voltage discharge, voltage descends, and can not keep T
4Saturation conduction, its collector voltage rise and puncture voltage-stabiliser tube D
8To T
3Provide trigger current, T
3Conducting, the electromagnet action drives tripping mechanism work, and the switch of cutting off the electricity supply makes load break away from power supply, is achieved protection.
(2) open-phase protection principle
When three phase mains lacks arbitrary phase time, T
1, T
2Photoelectric tube all can conducting, C like this
6Can not get boost charge, make T
3Conducting, electromagnet get electric work, drive tripping mechanism work, and the switch of cutting off the electricity supply makes load break away from power supply, is protected.
(3) under-voltage protection principle
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93219523 CN2202367Y (en) | 1993-07-24 | 1993-07-24 | Three-phase four-function automatic protective switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93219523 CN2202367Y (en) | 1993-07-24 | 1993-07-24 | Three-phase four-function automatic protective switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2202367Y true CN2202367Y (en) | 1995-06-28 |
Family
ID=33798890
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93219523 Expired - Fee Related CN2202367Y (en) | 1993-07-24 | 1993-07-24 | Three-phase four-function automatic protective switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2202367Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104319129A (en) * | 2014-09-30 | 2015-01-28 | 扬帆同创(中国)电子有限公司 | Super-intelligent unipolar air switch |
-
1993
- 1993-07-24 CN CN 93219523 patent/CN2202367Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104319129A (en) * | 2014-09-30 | 2015-01-28 | 扬帆同创(中国)电子有限公司 | Super-intelligent unipolar air 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 |