CN103762120A - Controller of intelligent integrated high-voltage alternating current contactor - Google Patents
Controller of intelligent integrated high-voltage alternating current contactor Download PDFInfo
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- CN103762120A CN103762120A CN201410015030.XA CN201410015030A CN103762120A CN 103762120 A CN103762120 A CN 103762120A CN 201410015030 A CN201410015030 A CN 201410015030A CN 103762120 A CN103762120 A CN 103762120A
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Abstract
A controller of an intelligent integrated high-voltage alternating current contactor comprises a controller body 1, a front end circuit 2 and a mechanical movement stroke detection circuit 3, wherein the controller body 1 is embedded inside a contactor body, the front end circuit 2 is installed a safe position where man-machine connection is convenient, and the mechanical movement stroke detection circuit 3 is installed in a position where the movement of a movable contact inside a contactor switch tube can be detected. The controller suitable for the intelligent integrated high-voltage alternating current contactor has the advantages of being high in intelligence degree, complete in function, simple and reasonable in structure, reliable in operation, good in maintenance performance and high in performance cost ratio.
Description
Technical field
The present invention relates to high voltage connector controller field, especially a kind ofly can realize the integrated high voltage connector controller of intelligence.
Background technology
Mainly there is anti-strong electromagnetic ability and the defect poor to switching mechanism control precision in existing intelligent integrated high voltage contactor controller, the former causes intelligent integrated high voltage contactor global reliability to decline, and easily causes power grid security accident, damage of facilities accident; The latter causes point, combined floodgate control rate is slow, low precision, " zero switching " that can not realize ideal and point, making process is without the requirement of spring, allomeric function is incomplete, needs more coordinative composition of equipments use in real process.
Summary of the invention
Technical problem to be solved by this invention is, provides a kind of circuit structure reasonable, and the intelligent integrated high voltage AC contactor controller that overall price/performance ratio is high has strong anti-electromagnetic interference capability and the accurate ability of control switch structure.
For solving the problems of the technologies described above, the invention provides a kind of intelligent integrated high voltage AC contactor controller, comprise controller main body 1, fore-lying device 2, mechanical movement stroke detection circuit 3, controller main body 1 is flush-mounted in contact body, fore-lying device 2 is installed on safety and is convenient to man-machine interactive position, and mechanical movement stroke detection circuit 3 is installed on and can detects the cephalomotor position of movable contact in contactless contactor pipe; Between fore-lying device 2 and controller main body 1, there is descending serial communication passage 30, between descending serial communication passage 30 and microcontroller circuit 8, there is serial communication interface circuit 10, in serial communication interface circuit 10, there is electrical isolation device, between microcontroller circuit 8 and descending serial communication passage 30, on electric, isolate; Between controller main body 1 and mechanical movement stroke detection circuit 3, use multicore shielding cable to be connected; Controller main body 1 comprises filter circuit group 6, interface circuit group 7, microcontroller circuit 8, in filter circuit group 6, have connect the voltage filter circuit 17 of distribution voltage instrument transformer, the current filtering circuit 18 that connects load current instrument transformer, the coil filter circuit 19 that connects divide-shut brake coil, the tool movement travel testing circuit that picks stroke detection filter circuit 20, connect the electric source filter circuit 21 of AC power; In interface circuit group 7, there is voltage measurement interface circuit 22, current measuring interface circuit 23, divide-shut brake coil interface circuit 24, stroke detection interface circuit 25, working power circuit 26, serial communication interface circuit 10; In microcontroller circuit 8, have core devices cpu circuit 28, microcontroller circuit 8 is connected with the total interface circuit in interface circuit group 7 respectively, then is connected with the corresponding filter circuit in filter circuit group 6.
Mechanical movement stroke detection circuit 3, comprises that 27,3 transducers 27 of 3 transducers are connected with the stroke detection filter circuit 20 in controller main body 1 by four wires respectively, and two in four wires is power line, and two is holding wire.
In fore-lying device 2, there is microcontroller circuit 11, chromatic colour liquid crystal display screen 15, descending serial communication interface 12, parallel serial communication interface 13, the up serial communication interface 14 connected with microcontroller circuit 11; In descending serial communication interface 12, parallel serial communication interface 13, up serial communication interface 14, there are the descending serial communication passage 30 of electrical isolation device, parallel serial communication passage 58, up serial communication passage 16 to isolate on electric with microcontroller circuit 11, the body induction circuit 57 being in addition connected with microcontroller circuit 11.
The shell of controller main body 1 is double-level-metal, and internal layer 4 is aluminium sheet, and thickness is not less than 3mm, and outer 5 is iron plate, and thickness is not less than 1mm; Between filter circuit group 6 and interface circuit group 7, have aluminium sheet 9 to separate, aluminium plate thickness is not less than 3mm; Between interface circuit group 7 and microcontroller circuit 8, have aluminium sheet 29 to separate, aluminium plate thickness is not less than 3mm.
In interface circuit group 7 in controller main body 1, have power circuit 26, it comprises rectification circuit 31, isolating diode 32-35, decompression voltage regulator 40, storage capacitor 37-39; Decompression voltage regulator 40 forms low-voltage supply, and storage capacitor 37-39 rated voltage is not less than 300V, rated capacity is not less than 500 μ F.
In the interface circuit group 7 of controller main body 1, have divide-shut brake interface circuit 24, divide-shut brake interface circuit 24 comprises divide-shut brake outlet device 43, divide-shut brake isolated drive circuit 44, divide-shut brake current sampling circuit 45, divide-shut brake change-over circuit 46; Outlet device 43 is for can turn-off power electronic device; Sub-gate circuit accesses power supply with coil filter circuit 19, switching winding 59 after being connected by exporting device 43, current sampling circuit 45, divide-shut brake change-over circuit 46 first tie points; Closing circuit accesses power supply with coil filter circuit 19, closing coil 60 after being connected by exporting device 43, current sampling circuit 45, divide-shut brake change-over circuit 46 second tie points.
In the filter circuit group 6 of controller main body 1, there is the filter circuit 21 that connects power supply, it comprises input line 48, filter coil output line 49, the ground wire 50 of filter coil 47, filter coil, filter coil is parallel winding of multiple coils on annular iron core, between input line 48, output line 49 and ground wire 50 3 lines, is connected to filter circuit 51-56.
Accompanying drawing explanation
Fig. 1 is the overall structure figure of contactor controller of the present invention.
Fig. 2 is the structure chart of mechanical trip testing circuit of the present invention.
Fig. 3 is the structure chart of the power circuit of contactor controller interface circuit of the present invention.
Fig. 4 is the structure chart of the divide-shut brake control interface of contactor controller interface circuit of the present invention.
Fig. 5 is the structure chart of filter circuit of the present invention.
1, controller main body; 2, fore-lying device; 3, mechanical movement stroke detection circuit; 4, shell internal layer; 5, shell skin; 6, filter circuit group; 7, interface circuit group; 8, controller main body microcontroller circuit; 9, the first aluminium sheet; 10, serial communication interface circuit; 11, fore-lying device microcontroller circuit; 12, descending serial communication interface; 13, parallel serial communication interface; 14, up serial communication interface; 15, color LCD screen; 16, up serial communication passage 17, voltage filter circuit; 18, current filtering circuit; 19, coil filter circuit; 20, stroke detection filter circuit; 21, electric source filter circuit; 22, voltage measurement interface circuit; 23, current measuring interface circuit; 24, divide-shut brake coil interface circuit; 25, stroke detection interface circuit; 26, working power circuit; 27, transducer; 28, cpu circuit; 29, aluminium sheet; 30, descending serial communication passage; 31, rectification circuit; 32-35, isolating diode; 36, filter capacitor; 37-39, storage capacitor; 40, decompression voltage regulator; 41, resistance; 42, isolator; 43, divide-shut brake outlet device; 44, isolated drive circuit; 45, current sampling circuit; 46, divide-shut brake change-over circuit; 47, filter coil; 48, input line; 49, output line; 50, ground wire; 51-56, filter circuit; 57, body induction circuit; 58, parallel serial communication passage; 59, switching winding; 60, closing coil.
Embodiment
For solving the problems of the technologies described above, the invention provides a kind of intelligent integrated high voltage contactor controller, comprise controller main body 1, fore-lying device 2, mechanical movement stroke detection circuit 3, controller main body 1 is flush-mounted in high voltage connector body, fore-lying device 2 is installed on safety and is convenient to man-machine interactive place, and mechanical movement stroke detection circuit 3 is installed on and can detects the cephalomotor position of movable contact in contactless contactor pipe; Between fore-lying device 2 and controller main body 1, have descending serial communication passage 30, distance is between the two pulled open, install and use at the scene of being convenient to; Between descending serial communication passage 30 and microcontroller circuit 8, there is serial communication interface circuit 10, in serial communication interface circuit 10, have electrical isolation device, between microcontroller circuit 8 and descending serial communication passage 30, on electric, isolate; Between controller main body 1 and mechanical movement stroke detection circuit 3, use multicore shielding cable to be connected, shielded cable improves interference.
As shown in Figure 1, controller main body 1 comprises filter circuit group 6, interface circuit group 7, microcontroller circuit 8, in filter circuit group 6, have connect the voltage filter circuit 17 of distribution voltage instrument transformer, the current filtering circuit 18 that connects load current instrument transformer, the coil filter circuit 19 that connects divide-shut brake coil, the tool movement travel testing circuit that picks stroke detection filter circuit 20, connect the electric source filter circuit 21 of alternating current-direct current 220V/110V power supply; In interface circuit group 7, there is voltage measurement interface circuit 22, current measuring interface circuit 23, divide-shut brake coil interface circuit 24, stroke detection interface circuit 25, working power circuit 26, serial communication interface circuit 10; In microcontroller circuit 8, have core devices cpu circuit 28, microcontroller circuit 8 is connected with the total interface circuit in interface circuit group 7 respectively, then is connected with the corresponding filter circuit in filter circuit group 6.With this, measure time in divide-shut brake process of moving contact in the size of the size of distribution voltage and phase place, load current and phase place, contactless contactor pipe and speed and the divide-shut brake through divide-shut brake coil control contactor; When contactor gate-dividing state, microcontroller circuit 8 can according to record be added in voltage-phase on contactless contactor, contactor card hang in the run duration of moving contact and the closing time point of speed control contactor switch at contactless contactor 2 end alternating voltage zero-crossing points; When contactor "on" position, microcontroller circuit 8 can pass through contactless contactor current zero-crossing point according to some opening time of the run duration of moving contact in the phase place of the contactor load current recording, contactless contactor and speed control contactor switch, thereby realizes primary cut-out " zero switching " function.
In fore-lying device 2, there is microcontroller circuit 11, chromatic colour liquid crystal display screen 15, descending serial communication interface 12, parallel serial communication interface 13, the up serial communication interface 14 connected with microcontroller circuit 11; In descending serial communication interface 12, parallel serial communication interface 13, up serial communication interface 14, there are the descending serial communication passage 30 of electrical isolation device, parallel serial communication passage 58, up serial communication passage 16 to isolate on electric with microcontroller circuit 11.With this, improve the Electro Magnetic Compatibility of microcontroller circuit 11, microcontroller circuit 11 in descending serial communication interface circuit 12, descending serial communication passage 30, controller main body 1 in serial communication interface circuit 10 and body microcontroller circuit 8 communicate exchange message.The body induction circuit 57 being in addition connected with microcontroller circuit 11, body induction circuit 57 is liquid crystal display screen luminescence display when human body proximity, and human body leaves rear delay-action to increase the service life, and having overcome liquid crystal display screen 15 is the neck of reliability problems of fore-lying device 2.
The shell of controller main body 1 is double-level-metal, and internal layer 4 is aluminium sheet, and thickness is not less than 3mm, and outer 5 is iron plate, and thickness is not less than 1mm; Between filter circuit group 6 and interface circuit group 7, have aluminium sheet to separate, aluminium plate thickness is not less than 3mm; The connecting line of filter circuit group and distribution voltage instrument transformer, load circuit instrument transformer, divide-shut brake coil, stroke detection circuit, alternating current-direct current 220V/110V power supply is used multicore shielding cable, and screen metal is through the earthing of casing; Between interface circuit group 7 and microcontroller circuit 8, there is aluminium sheet 29 to separate, aluminium plate thickness is not less than 3mm, aluminium sheet has shielding action to electric field, iron plate has shielding action to magnetic field, the two reaches certain thickness could effectively eliminate the electromagnetic interference of using on-the-spot contactor switching power capacitor to produce, assurance device reliably working.
As shown in Figure 2, mechanical movement stroke detection circuit 3, comprises that 27,3 transducers 27 of 3 transducers are connected with the stroke detection filter circuit 20 in controller main body 1 by four wires respectively, and two in four wires is power line, and two is holding wire.Transducer comprises lenticular lenses, luminescent device and light-sensitive device, luminescent device light-emitting area is to the photosurface of light-sensitive device, luminescent device and light-sensitive device are arranged on fixed body, and lenticular lenses is arranged in contactor moving contact drive link, in the gap between luminescent device and light-sensitive device, moves; By light-sensitive device signal processing circuit, the change in optical signal producing when lenticular lenses is moved is by calculating the parameter such as time, speed, stroke of mechanical movement.
As shown in Figure 3, in the interface circuit group 7 in controller main body 1, have power circuit 26, it comprises rectification circuit 31, isolating diode 32-35, decompression voltage regulator 40, storage capacitor 37-39; Rectification circuit 31 makes input AC, direct current output be direct current, therefore installs alternating current-direct current and inputs general; Decompression voltage regulator 40 forms low-voltage supply, storage capacitor 37-39 rated voltage is not less than 300V, rated capacity is not less than 500 μ F, for energy storage, for three-phase separate, close a floodgate, make still can carry out separating brake control after external power source dead electricity, isolating diode 32-35 is for power source diverter output isolation mutually, the impact that reduces to be exported each other; Resistance 41, isolator 42 form power-failure protecting interface circuit; when rectification circuit 31 Non voltage output; resistance 41 step-downs reach controller main body 8 again after isolating device 42 electrical equipment isolation, and controller main body 8 is control contactor separating brake therefore, and separating brake electric energy is provided by storage capacitor 37-39.
As shown in Figure 4, in the interface circuit group 7 of controller main body 1, have divide-shut brake interface circuit 24, divide-shut brake interface circuit 24 comprises divide-shut brake outlet device 43, divide-shut brake isolated drive circuit 44, divide-shut brake current sampling circuit 45, divide-shut brake change-over circuit 46; Outlet device 43 is for can turn-off power electronic device; Can turn-off power electronic device is IGBT pipe or metal-oxide-semiconductor or transistor; Sub-gate circuit accesses power supply with coil filter circuit 19, switching winding 59 after being connected by exporting device 43, current sampling circuit 45, divide-shut brake change-over circuit 46 first tie points; Closing circuit by exporting device 43, current sampling circuit 45 divide-shut brake change-over circuit 46 second tie points access power supply with coil filter circuit 19, closing coil 60 after being connected.The separating brake that controller main body 8 is accepted fore-lying device 2 closes a floodgate after order, by isolated drive circuit 44, make 43 conductings of divide-shut brake outlet device, therefore divide-shut brake change-over circuit 46 is switched on and is made contactor divide-shut brake, controller main body 8 obtains the size of divide-shut brake electric current simultaneously from current sampling circuit 45, and with set point comparison, by isolated drive circuit 44, outlet device 43, regulate the size of current of divide-shut brake change-over circuit 46, thereby the various parameters of divide-shut brake are accurately controlled in setting range.
As shown in Figure 5, in the filter circuit group 6 of controller main body 1, there is the filter circuit 21 that connects power supply, it comprises input line 48, filter coil output line 49, the ground wire 50 of filter coil 47, filter coil, filter coil is parallel winding of multiple coils on annular iron core, between input line 48, output line 49 and ground wire 50 3 lines, is connected to filter circuit 51-56.
Although the present invention illustrates with regard to preferred implementation and describes, only it will be understood by those of skill in the art that otherwise exceed claim limited range of the present invention, can carry out variations and modifications to the present invention.
Claims (9)
1. an intelligent integrated high voltage AC contactor controller, it is characterized in that, comprise: controller main body (1), fore-lying device (2), mechanical movement stroke detection circuit (3), controller main body (1) is flush-mounted in contact body, fore-lying device (2) is installed on safety and is convenient to man-machine interactive position, and mechanical movement stroke detection circuit (3) is installed on and can detects the cephalomotor position of movable contact in contactless contactor pipe; Between fore-lying device (2) and controller main body (1), there is descending serial communication passage (30), between descending serial communication passage (30) and microcontroller circuit (8), there is serial communication interface circuit (10), serial communication interface circuit has electrical isolation device in (10), between microcontroller circuit (8) and descending serial communication passage (30), on electric, isolates; Between controller main body (1) and mechanical movement stroke detection circuit (3), use multicore shielding cable to be connected; Controller main body (1) comprises filter circuit group (6), interface circuit group (7), microcontroller circuit (8), in filter circuit group (6), have connect the voltage filter circuit (17) of distribution voltage instrument transformer, the current filtering circuit (18) that connects load current instrument transformer, the coil filter circuit (19) that connects divide-shut brake coil, the tool movement travel testing circuit that picks stroke detection filter circuit (20), connect the electric source filter circuit (21) of AC power; In interface circuit group (7), there are voltage measurement interface circuit (22), current measuring interface circuit (23), divide-shut brake coil interface circuit (24), stroke detection interface circuit (25), working power circuit (26), serial communication interface circuit (10); In microcontroller circuit (8), have core devices cpu circuit (28), microcontroller circuit (8) is connected with the total interface circuit in interface circuit group (7) respectively, then is connected with the corresponding filter circuit in filter circuit group (6).
2. intelligent integrated high voltage AC contactor controller as claimed in claim 1, it is characterized in that, described mechanical movement stroke detection circuit (3), comprise 3 transducers (27), 3 transducers (27) are connected with the stroke detection filter circuit (20) in controller main body (1) by four wires respectively, two in four wires is power line, and two is holding wire.
3. intelligent integrated high voltage AC contactor controller as claimed in claim 1, it is characterized in that, in fore-lying device (2), there is microcontroller circuit (11), chromatic colour liquid crystal display screen (15), descending serial communication interface (12), parallel serial communication interface (13), the up serial communication interface (14) connected with microcontroller circuit (11); Descending serial communication interface (12), parallel serial communication interface (13), up serial communication interface have electrical isolation device in (14), descending serial communication passage (30), parallel serial communication passage (58), up serial communication passage (16) are isolated on electric with microcontroller circuit (11), the body induction circuit (57) being in addition connected with microcontroller circuit (11).
4. intelligent integrated high voltage AC contactor controller as claimed in claim 1, is characterized in that, the shell of controller main body (1) is double-level-metal, and internal layer (4) is aluminium sheet, and thickness is not less than 3mm, and outer (5) are iron plate, and thickness is not less than 1mm; Between filter circuit group (6) and interface circuit group (7), have aluminium sheet (9) to separate, aluminium plate thickness is not less than 3mm.
5. intelligent integrated high voltage AC contactor controller as claimed in claim 4, is characterized in that, between interface circuit group (7) and microcontroller circuit (8), has aluminium sheet (29) to separate, and aluminium plate thickness is not less than 3mm.
6. intelligent integrated high voltage AC contactor controller as claimed in claim 1, it is characterized in that, in interface circuit group (7) in controller main body (1), have power circuit (26), it comprises rectification circuit (31), isolating diode (32-35), decompression voltage regulator (40), storage capacitor (37-39); Decompression voltage regulator (40) forms low-voltage supply, and storage capacitor (37-39) rated voltage is not less than 300V, rated capacity is not less than 500 μ F.
7. intelligent integrated high voltage AC contactor controller as claimed in claim 1, it is characterized in that, in the interface circuit group (7) of controller main body (1), have divide-shut brake interface circuit (24), divide-shut brake interface circuit (24) comprises divide-shut brake outlet device (43), divide-shut brake isolated drive circuit (44), divide-shut brake current sampling circuit (45), divide-shut brake change-over circuit (46); Outlet device (43) is for can turn-off power electronic device; Sub-gate circuit accesses power supply by exporting device (43), current sampling circuit (45), divide-shut brake change-over circuit (46) first tie points and coil filter circuit (19), switching winding (59) after being connected; Closing circuit accesses power supply by exporting device (43), current sampling circuit (45), divide-shut brake change-over circuit (46) second tie points and coil filter circuit (19), closing coil (60) after being connected.
8. intelligent integrated high voltage AC contactor controller as claimed in claim 7, is characterized in that, can turn-off power electronic device is IGBT pipe or metal-oxide-semiconductor or transistor.
9. intelligent integrated high voltage AC contactor controller as claimed in claim 1, it is characterized in that, in the filter circuit group (6) of controller main body (1), there is the filter circuit (21) that connects power supply, it comprises input line (48), filter coil output line (49), the ground wire (50) of filter coil (47), filter coil, filter coil is parallel winding of multiple coils on annular iron core, between input line (48), output line (49) and ground wire (50) three lines, is connected to filter circuit (51-56).
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| CN201410015030.XA CN103762120B (en) | 2014-01-13 | 2014-01-13 | Controller of intelligent integrated high-voltage alternating current contactor |
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| CN201410015030.XA CN103762120B (en) | 2014-01-13 | 2014-01-13 | Controller of intelligent integrated high-voltage alternating current contactor |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106877226A (en) * | 2017-03-24 | 2017-06-20 | 郑州祥和集团电气设备有限公司 | The AC metal closed switching device of novel intelligent |
| CN111279450A (en) * | 2017-10-30 | 2020-06-12 | 泰连公司 | Improved solenoid actuator with fast analog control economizer |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2733573Y (en) * | 2004-06-15 | 2005-10-12 | 梁武兴 | Anti-flashover AC contactor |
| JP4080313B2 (en) * | 2002-12-04 | 2008-04-23 | 三菱電機株式会社 | Magnetic contactor coil drive circuit |
| CN201332060Y (en) * | 2009-01-08 | 2009-10-21 | 虞培良 | Energy-conserving environment-protecting type alternating current-direct current contactor controller |
| US20110127854A1 (en) * | 2009-12-01 | 2011-06-02 | International Electrical Savings & Development, LLC | Systems and devices for reducing phantom load |
| CN202013852U (en) * | 2011-01-24 | 2011-10-19 | 宝鸡文理学院 | Intelligent AC contactor |
| CN103472271A (en) * | 2012-06-08 | 2013-12-25 | 中国科学院空间科学与应用研究中心 | Low frequency wave band magnetism shielding cylinder |
-
2014
- 2014-01-13 CN CN201410015030.XA patent/CN103762120B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4080313B2 (en) * | 2002-12-04 | 2008-04-23 | 三菱電機株式会社 | Magnetic contactor coil drive circuit |
| CN2733573Y (en) * | 2004-06-15 | 2005-10-12 | 梁武兴 | Anti-flashover AC contactor |
| CN201332060Y (en) * | 2009-01-08 | 2009-10-21 | 虞培良 | Energy-conserving environment-protecting type alternating current-direct current contactor controller |
| US20110127854A1 (en) * | 2009-12-01 | 2011-06-02 | International Electrical Savings & Development, LLC | Systems and devices for reducing phantom load |
| CN202013852U (en) * | 2011-01-24 | 2011-10-19 | 宝鸡文理学院 | Intelligent AC contactor |
| CN103472271A (en) * | 2012-06-08 | 2013-12-25 | 中国科学院空间科学与应用研究中心 | Low frequency wave band magnetism shielding cylinder |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106877226A (en) * | 2017-03-24 | 2017-06-20 | 郑州祥和集团电气设备有限公司 | The AC metal closed switching device of novel intelligent |
| CN111279450A (en) * | 2017-10-30 | 2020-06-12 | 泰连公司 | Improved solenoid actuator with fast analog control economizer |
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| CN103762120B (en) | 2014-12-10 |
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