CN103531408A - Automatic low-voltage circuit breaker closing device and automatic closing method by using device after no-voltage release - Google Patents
Automatic low-voltage circuit breaker closing device and automatic closing method by using device after no-voltage release Download PDFInfo
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Abstract
The invention provides an automatic low-voltage circuit breaker closing device, and belongs to the field of reclosing devices. The device comprises a low-voltage circuit breaker which is provided with a time relay, wherein a sliding contact, a termination contact and a clock mechanism are arranged in the time relay; the sliding contact and the termination contact are located at two ends of a right-angle connecting rod and provided with corresponding static contacts respectively, and the sliding contact and the termination contact are driven by the clock mechanism; a No.1 port and a No.13 port of the time relay are connected among different leading-out terminals of a low voltage side of a transformer, a fuse protector and the low-voltage circuit breaker respectively; and a No.17 port and a No.3 port of the time relay are short-circuited, and a No.16 port and a No.4 port are connected with two ends of an electric closing button of the low-voltage circuit breaker in parallel. According to the device, manpower is saved, the closing is fast, the corporate image is better maintained, and the device is simple in structure and convenient and easy to implement.
Description
Technical field
The invention provides a kind of low-voltage circuit breaker automatic switching-on device and for the method for automatic closing after no-voltage trip, belong to reclosing device field.
Background technology
Safety and stability for operation of power networks, while preventing power system restoration power supply, electric equipment is produced and impacted, the requirement of basis " power system operation rules " when transformer drops into, need to by its with load all disconnect, therefore the low-voltage circuit breaker of Circuit Fault on Secondary Transformer leading-out terminal all has the function of no-voltage trip, be when voltage is during lower than rated voltage certain value, in low-voltage circuit breaker, no-voltage release can make low-voltage circuit breaker tripping operation, after restoring electricity, by operation power personnel to on-the-spot combined floodgate low-voltage circuit breaker.If the low pressure trip device in dismounting low-voltage circuit breaker,, when supply power voltage is too low, can make power consumption equipment cisco unity malfunction, even damage.
The defect of this technology is at present: one, and when restoring electricity, need operation power personnel to close a floodgate to on-the-spot, need larger manpower; Its two, cannot remove no-voltage release, make power system restoration power-on time very long; Its three, after restoring electricity, operation power personnel closing time is longer, causes complaining more, affects corporate image.
Summary of the invention
The object of the invention is to provide a kind of low-voltage circuit breaker automatic switching-on device and for the method for automatic closing after no-voltage trip, saves manpower, closes a floodgate rapidly, has safeguarded preferably corporate image, simple in structure, convenient and easy.
Low-voltage circuit breaker automatic switching-on device of the present invention, comprise low-voltage circuit breaker, be provided with the time relay, in the time relay, be provided with sliding contact, stop contact and clockwork, sliding contact and termination contact are positioned at the two ends of right angle connecting rod, and there is respectively its corresponding fixed contact, sliding contact is driven by clockwork with termination contact, " 1 " number port of the time relay is connected respectively to the different leading-out terminals of step down side from " 13 " number port, between fuse and low-voltage circuit breaker, by " 17 " number port of the time relay and " 3 " number port short circuit, and " 16 " number port and " 4 " number port are parallel to low-voltage circuit breaker electric switch-on button two ends.
Described low-voltage circuit breaker automatic switching-on device, utilized clockwork to drive sliding contact to its corresponding fixed contact motion, when sliding contact moves to its corresponding fixed contact, after of short duration contact, separate again, send pulse enable signal electric switch-on mechanism action, low-voltage circuit breaker closes a floodgate, " 1 " number port of the time relay is connected on live wire, between low-voltage circuit breaker and fuse, the link that has saved incoming call checkout equipment, can make the time relay after power system recovery power supply, the very first time restores electricity, and the time relay that can avoid overcurrent to cause burns, and sliding contact fixed contact corresponding to it be of short duration contact and separate after, a segment distance also can move, until stop after contact fixed contact corresponding to it contacts stopping, at this moment the distance between its corresponding fixed contact of sliding contact can be avoided arc through air, very reliable, whole mechanical framework, its reliability of operation is also better than the complicated Single Chip Microcomputer (SCM) system that can realize this function far away, and cost is well below single shot reclosing device.
Described low-voltage circuit breaker automatic switching-on device, external divider resistance between " 13 " number port of the time relay and " 15 " port.Make solenoid iron core adhesive armature after connection, instantaneous normally-closed contact is disconnected, divider resistance seals in loop, because electric power system is not stopped power supply, the time relay just has power supply supply always, by time relay manufacturer production seal in loop with the supporting divider resistance of the time relay, solenoid can not burnt in long-time conducting.
Described low-voltage circuit breaker automatic switching-on device, time relay time delay length is 10 seconds to 15 seconds, sliding contact fixed contact corresponding with it time of contact is 2 seconds to 4 seconds.Shoving on circuit can be effectively avoided in the time delay of 10 seconds to 15 seconds, prevent the damage of electric equipment, avoided motor drive mechanism insensitive equipment combined floodgate failure the time of contact of 2 seconds to 4 seconds or be failure to actuate, in the time of also can not making to need separating brake, sending sub-gate signal cannot separating brake.
Described low-voltage circuit breaker automatic switching-on device, the time relay is DS-28 type exchange time relay.The DS-28 type time relay is AC relay, has avoided the use of rectifier, system is formed more simple, reliable.
The method for automatic closing after no-voltage trip of described low-voltage circuit breaker automatic switching-on device, described method is: the time relay power input with sliding contact and power output end are connected respectively to the different leading-out terminal of step down side, between fuse and low-voltage circuit breaker, the time relay is directly powered by transmission line, the switches set that instantaneous normally opened contact and sliding contact fixed contact corresponding to it formed is connected, and be parallel to the two ends of low-voltage circuit breaker electric switch-on button, its operation principle is divided into following three kinds of states:
State 1: when circuit is during in power down mode, the time relay is in the normal state, in the time relay, be provided with two moving contacts, be sliding contact and termination contact, sliding contact is positioned at initial position with termination contact, fixed contact corresponding with it disconnects respectively, and the instantaneous normally-closed contact of the time relay is closed, and the instantaneous normally opened contact of the time relay disconnects.
State 2: when circuit restores electricity, after transformer primary side closes a floodgate, Circuit Fault on Secondary Transformer leading-out terminal is charged, at this moment the time relay also restores electricity, in the time relay, be provided with solenoid, after solenoid energising, make iron core adhesive armature, instantaneous normally-closed contact is disconnected, on the port at instantaneous normally-closed contact two ends, be connected with divider resistance, after instantaneous normally-closed contact disconnects, divider resistance seals in solenoid loop, instantaneous normally opened contact is closed, in the time relay, be provided with clockwork, sliding contact starts to clockwise rotate under the drive of clockwork with termination contact, sliding contact is with the termination contact while and keep synchronized moving to its corresponding fixed contact, after the time setting, sliding contact disconnects after connecting with the termination contact short time again, when the short time connects, it is the pulse of 2 seconds to 4 seconds that the time relay can send a duration to low-voltage circuit breaker motor drive mechanism, motor drive mechanism is received after pulse signal, low-voltage circuit breaker action, from separating brake, become combined floodgate, the sliding contact fixed contact short time corresponding with it connects after disconnection again, can continue motion with stopping contact, until stop contact fixed contact corresponding to it, contact, move to position of rest, sliding contact and the stop motion simultaneously of termination contact, and remain on position of rest, make to disconnect after the of short duration contact of its corresponding fixed contact of sliding contact, and continue to stop after motion certain distance, prevent that low-voltage circuit breaker from receiving switching signal all the time, when needs separating brake, sending sub-gate signal cannot separating brake, also prevented from causing electric current to puncture air because of sliding contact fixed contact hypotelorism corresponding with it, make low-voltage circuit breaker receive all the time switching signal, and low-voltage circuit breaker is closed again after time delay after restoring electricity, effectively avoided shoving on power circuit.
State 3: when circuit has a power failure again, the time relay has lost electric current and voltage, solenoid dead electricity, iron core separates with armature, instantaneous normally-closed contact becomes closure from disconnection, instantaneous normally opened contact becomes disconnection from closure, in the time relay, be provided with restoring spring, sliding contact is grouped into initial position with termination contact next time in the driving of restoring spring, because instantaneous normally opened contact becomes disconnection from closure, when making sliding contact fixed contact corresponding to it contacting again in the driving of restoring spring is grouped into initial position process next time, can be because not existing induced current to cause low-voltage circuit breaker to close a floodgate in circuit.
Described low-voltage circuit breaker automatic switching-on device is for the method for automatic closing after no-voltage trip, and integral body is used mechanical part, very reliable, and simple in structure, be easy to realize, cost is low, under the environment of electric current and spread of voltage, impact resistance is better than electronic unit far away.
The beneficial effect that the present invention compared with prior art brought is:
Low-voltage circuit breaker automatic switching-on device of the present invention, utilized clockwork to drive sliding contact to its corresponding fixed contact motion, when sliding contact moves to its corresponding fixed contact, after of short duration contact, separate again, send pulse enable signal electric switch-on mechanism action, low-voltage circuit breaker closes a floodgate, " 1 " number port of the time relay is connected respectively to the different leading-out terminals of step down side from " 13 " number port, between fuse and low-voltage circuit breaker, the link that has saved incoming call checkout equipment, can make the time relay after power system recovery power supply, the very first time restores electricity, and the time relay that can avoid overcurrent to cause burns, and sliding contact fixed contact corresponding to it be of short duration contact and separate after, a segment distance also can move, until stop after contact fixed contact corresponding to it contacts stopping, at this moment the distance between its corresponding fixed contact of sliding contact can be avoided arc through air, very reliable, whole mechanical framework, its reliability of operation is also better than the complicated Single Chip Microcomputer (SCM) system that can realize this function far away, and cost is well below single shot reclosing device.
Solenoid is iron core adhesive armature after connection, instantaneous normally-closed contact is disconnected, divider resistance seals in loop, because electric power system is not stopped power supply, the time relay just has power supply supply always, by time relay manufacturer production seal in loop with the supporting divider resistance of the time relay, solenoid can not burnt in long-time conducting.
Time relay time delay can effectively be avoided shoving on circuit in 10 seconds to 15 seconds, prevent the damage of electric equipment, avoided motor drive mechanism insensitive equipment combined floodgate failure the time of contact of 2 seconds to 4 seconds or be failure to actuate, in the time of also can not making to need separating brake, sending sub-gate signal cannot separating brake.
Described low-voltage circuit breaker automatic switching-on device is for the method for automatic closing after no-voltage trip, and integral body is used mechanical part, very reliable, and simple in structure, be easy to realize, cost is low, under the environment of electric current and spread of voltage, impact resistance is better than electronic unit far away.
Accompanying drawing explanation
Fig. 1 is embodiment of the present invention structural representation;
Fig. 2 is sliding contact of the present invention and termination contact fundamental diagram.
In figure: 1, " 1 " number port; 2, " 3 " number port; 3, " 4 " number port; 4, " 13 " number port; 5, " 15 " number port; 6, " 16 " number port; 7, " 17 " number port; 8, fuse; 9, low-voltage circuit breaker; 10, the time relay; 11, sliding contact; 12, stop contact; 13, fixed contact; 14, instantaneous normally-closed contact; 15, instantaneous normally opened contact; 16, divider resistance.
Embodiment
Below in conjunction with the present invention, low-voltage circuit breaker automatic switching-on device embodiment is described further:
Embodiment 1: as depicted in figs. 1 and 2, low-voltage circuit breaker automatic switching-on device of the present invention, comprise low-voltage circuit breaker 9, be provided with DS-28 type exchange time relay 10, in the time relay 10, be provided with sliding contact 11, stop contact 12 and clockwork, sliding contact 11 and termination contact 12 are positioned at the two ends of right angle connecting rod, and there is respectively its corresponding fixed contact 13, sliding contact 11 is driven by clockwork with termination contact 12, it is 15 seconds that clockwork arranges time delay, 13 times of contact of sliding contact 11 fixed contact corresponding with it are 4 seconds, " 1 " number port one of the time relay 10 is connected respectively to the different leading-out terminals of step down side from " 13 " number port 4, between fuse 8 and low-voltage circuit breaker 9, by " 17 " number port of the time relay 10 7 and " 3 " number port 2 short circuits, and " 16 " number port 6 and " 4 " number port 3 are parallel to low-voltage circuit breaker 9 electric switch-on button two ends.The time relay 10 inside wherein, between " 1 " number port one and " 13 " number port 4, for solenoid, connect with instantaneous normally-closed contact 14, " 15 " number port 5 is relation in parallel with " 13 " number port 4, between " 16 " number port 6 and " 17 " number port 7, being instantaneous normally opened contact 15, is its corresponding fixed contact 13 of sliding contact 11 between " 3 " number port 2 and " 4 " number port 3.
Embodiment 2: on the architecture basics of embodiment 1, and 5 external divider resistances 16 of " 13 " number port 4 of the time relay 10 and " 15 " number port.
Below in conjunction with the present invention, to low-voltage circuit breaker automatic switching-on device, the method for automatic closing after no-voltage trip is described further:
As depicted in figs. 1 and 2, the method for automatic closing after no-voltage trip of low-voltage circuit breaker automatic switching-on device of the present invention, described method is: 10 power inputs of the time relay with sliding contact 11 and power output end are connected respectively to the different leading-out terminal of step down side, between fuse 8 and low-voltage circuit breaker 9, the time relay 10 is directly powered by transmission line, the switches set that instantaneous normally opened contact 15 fixed contact 13 corresponding to it sliding contact 11 formed is connected, and be parallel to the two ends of low-voltage circuit breaker 9 electric switch-on buttons, its operation principle is divided into following three kinds of states:
State 1: when circuit is during in power down mode, the time relay 10 is in the normal state, in the time relay 10, be provided with two moving contacts, be sliding contact 11 and termination contact 12, sliding contact 11 is positioned at initial position with termination contact 12, fixed contact 13 corresponding with it disconnects respectively, instantaneous normally-closed contact 14 closures of the time relay 10, and the instantaneous normally opened contact 15 of the time relay 10 disconnects.
State 2: when circuit restores electricity, after transformer primary side closes a floodgate, Circuit Fault on Secondary Transformer leading-out terminal is charged, at this moment the time relay 10 also restores electricity, in the time relay 10, be provided with solenoid, after solenoid energising, make iron core adhesive armature, instantaneous normally-closed contact 14 is disconnected, on the port at instantaneous normally-closed contact 14 two ends, be connected with divider resistance 16, after instantaneous normally-closed contact 14 disconnects, divider resistance 16 seals in solenoid loop, instantaneous normally opened contact 15 closures, in the time relay 10, be provided with clockwork, sliding contact 11 starts to clockwise rotate under the drive of clockwork with termination contact 12, sliding contact 11 is with 12 whiles of termination contact and keep synchronized moving to its corresponding fixed contact 13, after the time setting, sliding contact 11 disconnects after connecting with 12 short time of termination contact again, when the short time connects, it is the pulse of 2 seconds to 4 seconds that the time relay 10 can send a duration to low-voltage circuit breaker 9 motor drive mechanisms, motor drive mechanism is received after pulse signal, low-voltage circuit breaker 9 actions, from separating brake, become combined floodgate, sliding contact 11 fixed contact 13 short time corresponding with it connect after disconnection again, can continue motion with stopping contact 12, until stop contact 12 fixed contact 13 corresponding to it, contact, move to position of rest, sliding contact 11 and 12 stop motions simultaneously of termination contact, and remain on position of rest, make to disconnect after the of short duration contact of its corresponding fixed contact 13 of sliding contact 11, and continue to stop after motion certain distance, prevent that low-voltage circuit breaker 9 from receiving switching signal all the time, when needs separating brake, sending sub-gate signal cannot separating brake, also prevented from causing electric current to puncture air because of sliding contact 11 fixed contact 13 hypotelorisms corresponding with it, make low-voltage circuit breaker 9 receive all the time switching signal, and low-voltage circuit breaker 9 is closed again after time delay after restoring electricity, effectively avoided shoving on power circuit.
State 3: when circuit has a power failure again, the time relay 10 has lost electric current and voltage, solenoid dead electricity, iron core separates with armature, instantaneous normally-closed contact 14 becomes closure from disconnection, instantaneous normally opened contact 15 becomes disconnection from closure, in the time relay 10, be provided with restoring spring, sliding contact 11 is grouped into initial position with termination contact 12 next time in the driving of restoring spring, because instantaneous normally opened contact 15 becomes disconnection from closure, when making sliding contact 11 fixed contact 13 corresponding to it contacting again in the driving of restoring spring is grouped into initial position process next time, can be because not existing induced current to cause low-voltage circuit breaker 9 to close a floodgate in circuit.
Described low-voltage circuit breaker automatic switching-on device is for the method for automatic closing after no-voltage trip, the whole mechanical part that uses, very reliable, and simple in structure, be easy to realize, cost is low, under the environment of electric current and spread of voltage, impact resistance is better than electronic unit far away, has guaranteed that Circuit Fault on Secondary Transformer can automatic closing after restoring electricity, and has reduced greatly the workload of manpower and 95598 service platforms.
Operation principle and operating procedure
As depicted in figs. 1 and 2, the method for automatic closing after no-voltage trip of low-voltage circuit breaker automatic switching-on device of the present invention, described method is: 10 power inputs of the time relay with sliding contact 11 and power output end are connected respectively to the different leading-out terminal of step down side, between fuse 8 and low-voltage circuit breaker 9, the time relay 10 is directly powered by transmission line, the switches set that instantaneous normally opened contact 15 fixed contact 13 corresponding to it sliding contact 11 formed is connected, and be parallel to the two ends of low-voltage circuit breaker 9 electric switch-on buttons, its operation principle is divided into following three kinds of states:
State 1: when circuit is during in power down mode, the time relay 10 is in the normal state, in the time relay 10, be provided with two moving contacts, be sliding contact 11 and termination contact 12, sliding contact 11 is positioned at initial position with termination contact 12, fixed contact 13 corresponding with it disconnects respectively, instantaneous normally-closed contact 14 closures of the time relay 10, and the instantaneous normally opened contact 15 of the time relay 10 disconnects.
State 2: when circuit restores electricity, after transformer primary side closes a floodgate, Circuit Fault on Secondary Transformer leading-out terminal is charged, at this moment the time relay 10 also restores electricity, in the time relay 10, be provided with solenoid, after solenoid energising, make iron core adhesive armature, instantaneous normally-closed contact 14 is disconnected, on the port at instantaneous normally-closed contact 14 two ends, be connected with divider resistance 16, after instantaneous normally-closed contact 14 disconnects, divider resistance 16 seals in solenoid loop, instantaneous normally opened contact 15 closures, in the time relay 10, be provided with clockwork, sliding contact 11 starts to clockwise rotate under the drive of clockwork with termination contact 12, sliding contact 11 is with 12 whiles of termination contact and keep synchronized moving to its corresponding fixed contact 13, after the time setting, sliding contact 11 disconnects after connecting with 12 short time of termination contact again, when the short time connects, it is the pulse of 2 seconds to 4 seconds that the time relay 10 can send a duration to low-voltage circuit breaker 9 motor drive mechanisms, motor drive mechanism is received after pulse signal, low-voltage circuit breaker 9 actions, from separating brake, become combined floodgate, sliding contact 11 fixed contact 13 short time corresponding with it connect after disconnection again, can continue motion with stopping contact 12, until stop contact 12 fixed contact 13 corresponding to it, contact, move to position of rest, sliding contact 11 and 12 stop motions simultaneously of termination contact, and remain on position of rest, make to disconnect after the of short duration contact of its corresponding fixed contact 13 of sliding contact 11, and continue to stop after motion certain distance, prevent that low-voltage circuit breaker 9 from receiving switching signal all the time, when needs separating brake, sending sub-gate signal cannot separating brake, also prevented from causing electric current to puncture air because of sliding contact 11 fixed contact 13 hypotelorisms corresponding with it, make low-voltage circuit breaker 9 receive all the time switching signal, and low-voltage circuit breaker 9 is closed again after time delay after restoring electricity, effectively avoided shoving on power circuit.
State 3: when circuit has a power failure again, the time relay 10 has lost electric current and voltage, solenoid dead electricity, iron core separates with armature, instantaneous normally-closed contact 14 becomes closure from disconnection, instantaneous normally opened contact 15 becomes disconnection from closure, in the time relay 10, be provided with restoring spring, sliding contact 11 is grouped into initial position with termination contact 12 next time in the driving of restoring spring, because instantaneous normally opened contact 15 becomes disconnection from closure, when making sliding contact 11 fixed contact 13 corresponding to it contacting again in the driving of restoring spring is grouped into initial position process next time, can be because not existing induced current to cause low-voltage circuit breaker 9 to close a floodgate in circuit.
Described low-voltage circuit breaker automatic switching-on device is for the method for automatic closing after no-voltage trip, the whole mechanical part that uses, very reliable, and simple in structure, be easy to realize, cost is low, under the environment of electric current and spread of voltage, impact resistance is better than electronic unit far away, has guaranteed that Circuit Fault on Secondary Transformer can automatic closing after restoring electricity, and has reduced greatly the workload of manpower and 95598 service platforms.
Claims (5)
1. a low-voltage circuit breaker automatic switching-on device, comprise low-voltage circuit breaker, it is characterized in that, be provided with the time relay (10), in the time relay (10), be provided with sliding contact (11), stop contact (12) and clockwork, sliding contact (11) and termination contact (12) are positioned at the two ends of right angle connecting rod, and there is respectively its corresponding fixed contact (13), sliding contact (11) is driven by clockwork with termination contact (12), " 1 " number port (1) of the time relay (10) is connected respectively to the different leading-out terminals of step down side from " 13 " number port (4), between fuse (8) and low-voltage circuit breaker (9), by " 17 " number port (7) of the time relay (10) and " 3 " number port (2) short circuit, and " 16 " number port (6) and " 4 " number port (3) are parallel to low-voltage circuit breaker (9) electric switch-on button two ends.
2. low-voltage circuit breaker automatic switching-on device according to claim 1, is characterized in that external divider resistance (16) between " 13 " number port (4) of the time relay (10) and " 15 " port (5).
3. low-voltage circuit breaker automatic switching-on device according to claim 1, is characterized in that, the time relay (10) time delay length is 10 seconds to 15 seconds, and sliding contact (11) fixed contact corresponding with it (13) time of contact is 2 seconds to 4 seconds.
4. low-voltage circuit breaker automatic switching-on device according to claim 1, is characterized in that, the time relay (10) is DS-28 type exchange time relay.
5. the method for automatic closing after no-voltage trip that adopts low-voltage circuit breaker automatic switching-on device claimed in claim 1, it is characterized in that, described method is: the time relay with sliding contact (11) (10) power input is connected respectively to the different leading-out terminal of step down side from power output end, between fuse (8) and low-voltage circuit breaker (9), the time relay (10) is directly powered by transmission line, the switches set that instantaneous normally opened contact (15) fixed contact corresponding to it sliding contact (11) (13) formed is connected, and be parallel to the two ends of low-voltage circuit breaker (9) electric switch-on button, its operation principle is divided into following three kinds of states:
State 1: when circuit is during in power down mode, the time relay (10) is in the normal state, in the time relay (10), be provided with two moving contacts, be sliding contact (11) and termination contact (12), sliding contact (11) is positioned at initial position with termination contact (12), fixed contact corresponding with it (13) disconnects respectively, the instantaneous normally-closed contact of the time relay (10) (14) closure, and the instantaneous normally opened contact of the time relay (10) (15) disconnects.
State 2: when circuit restores electricity, after transformer primary side closes a floodgate, Circuit Fault on Secondary Transformer leading-out terminal is charged, at this moment the time relay (10) also restores electricity, the time relay is provided with solenoid in (10), after solenoid energising, make iron core adhesive armature, instantaneous normally-closed contact (14) is disconnected, on the port at instantaneous normally-closed contact (14) two ends, be connected with divider resistance (16), after instantaneous normally-closed contact (14) disconnects, divider resistance (16) seals in solenoid loop, instantaneous normally opened contact (15) closure, the time relay is provided with clockwork in (10), sliding contact (11) starts to clockwise rotate under the drive of clockwork with termination contact (12), sliding contact (11) is with termination contact (12) while and keep synchronized moving to its corresponding fixed contact (13), after the time setting, sliding contact (11) disconnects after connecting with termination contact (12) short time again, when the short time connects, it is the pulse of 2 seconds to 4 seconds that the time relay (10) can send a duration to low-voltage circuit breaker (9) motor drive mechanism, motor drive mechanism is received after pulse signal, low-voltage circuit breaker (9) action, from separating brake, become combined floodgate, sliding contact (11) fixed contact corresponding with it (13) short time connects after disconnection again, can continue motion with stopping contact (12), until stop contact (12) fixed contact corresponding to it (13), contact, move to position of rest, sliding contact (11) and termination contact (12) stop motion simultaneously, and remain on position of rest, make to disconnect after the of short duration contact of its corresponding fixed contact of sliding contact (11) (13), and continue to stop after motion certain distance, prevent that low-voltage circuit breaker (9) from receiving switching signal all the time, when needs separating brake, sending sub-gate signal cannot separating brake, also prevented from causing electric current to puncture air because of sliding contact (11) fixed contact corresponding with it (13) hypotelorism, make low-voltage circuit breaker (9) receive all the time switching signal, and low-voltage circuit breaker (9) is closed again after time delay after restoring electricity, effectively avoided shoving on power circuit.
State 3: when circuit has a power failure again, the time relay (10) has lost electric current and voltage, solenoid dead electricity, iron core separates with armature, instantaneous normally-closed contact (14) becomes closure from disconnection, instantaneous normally opened contact (15) becomes disconnection from closure, the time relay is provided with restoring spring in (10), sliding contact (11) is grouped into initial position with termination contact (12) next time in the driving of restoring spring, because instantaneous normally opened contact (15) becomes disconnection from closure, when making sliding contact (11) fixed contact corresponding to it (13) contacting again in the driving of restoring spring is grouped into initial position process next time, can be because not existing induced current to cause low-voltage circuit breaker (9) to close a floodgate in circuit.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310516727.0A CN103531408B (en) | 2013-10-28 | 2013-10-28 | Low-voltage circuit breaker automatic switching-on device and the method for automatic closing after no-voltage trip thereof |
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| CN201310516727.0A CN103531408B (en) | 2013-10-28 | 2013-10-28 | Low-voltage circuit breaker automatic switching-on device and the method for automatic closing after no-voltage trip thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109995010A (en) * | 2019-04-29 | 2019-07-09 | 南京南瑞继保电气有限公司 | A kind of induced current quick release device autocontrol method and system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109995010A (en) * | 2019-04-29 | 2019-07-09 | 南京南瑞继保电气有限公司 | A kind of induced current quick release device autocontrol method and system |
| CN109995010B (en) * | 2019-04-29 | 2021-04-20 | 南京南瑞继保电气有限公司 | Automatic control method and system for induced current quick release device |
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