CN103746632A - Low-voltage motor control system - Google Patents
Low-voltage motor control system Download PDFInfo
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- CN103746632A CN103746632A CN201410036857.9A CN201410036857A CN103746632A CN 103746632 A CN103746632 A CN 103746632A CN 201410036857 A CN201410036857 A CN 201410036857A CN 103746632 A CN103746632 A CN 103746632A
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Abstract
The invention discloses a low-voltage motor control system, which comprises an electric loop and a ZKK control loop. The electric loop is formed by a moulded case circuit breaker, a plugin and a motor load which are sequentially connected by a phase line A, a phase line B and a phase line C of a three-phase alternating-current power supply. The ZKK control loop comprises a ZKK electric operating mechanism and at least one group of closing circuit and opening circuit, wherein the ZKK electric operating mechanism is powered by a direct-current power supply, the at least one group of closing circuit and opening circuit is connected with the ZKK electric operating mechanism, and the ZKK electric operating mechanism is used for controlling the closing and opening of the moulded case circuit breaker. Compared with an original contactor scheme, the scheme that the moulded case circuit breaker is configured with the electric operating mechanism has the advantage that the required space is much more less; according to the scheme that the moulded case circuit breaker is configured with the electric operating mechanism, the original control requirements can be met, secondary configuration is simplified, space in a drawer is larger, normal heat radiation of equipment during operation is facilitated, and the long-term safe operation of the equipment is favored.
Description
Technical field
The present invention relates to low-voltage distribution field, especially a kind of low-tension motor control system.
Background technology
Power plant's intermediate item 380V low-tension motor adopts contactor to control mostly, and general employing is closed, tripping relay separates closing circuit and trip(ping) circuit, and power circuit is shown in Fig. 1, and electric control loop figure refers to accompanying drawing 2; Its control loop operation principle:
A. start: control loop miniature circuit breaker DK control loop obtains electric, if change over switch ZK switches to regard to position ZK:3, between ZK:4, connect, because of tripping relay TJ control loop in off-state so time closing circuit in TJ close point remain unchanged, if press switch knob HA closing relay coil obtain in electric contactor control loop HJ and make war closed, in contactor loop, TJ close point maintains close point (because tripping relay TJ control loop remains unchanged in its all contact states of off-state), now contactor coil obtains electric and moves, in contactor control loop, C is made war closed, therefore contactor switching signal is maintained, contactor can keep "on" position, during normal operation, in the breaker of plastic casing of contactor upper end and loop, main switch is "on" position, contactor combined floodgate posterior end is loaded to such an extent that electricly normally move (if change over switch ZK switches to ZK:1 of distant place state, between ZK:2, connect, after DCS end is sent out starting command, program causes the final combined floodgate of contactor C and is put and kept "on" position by self-sustaining with the same after HA closure),
B. shut down: connect a state, if desired under stop loop, the operation of end load is realized and being shut down by following operation: if change over switch ZK switches to regard to position ZK:3, between ZK:4, connect, press trip button TA tripping relay TJ coil obtain electric, TJ close point in contactor coil control loop is moved becoming and has been disconnected contactor coil loop battle, contactor coil dead electricity and return to (tripping operation), lower end load because of dead electricity out of service (if change over switch ZK switches to ZK:1 of distant place state, between ZK:2, connect, after DCS end is sent out starting command, program trips with the same contactor C that causes after TA closure, lower end load is out of service).
As mentioned above, the contained element of the control loop of this type of scheme is more, and secondary line is comparatively complicated, and motor circuit is generally installed as drawer type.Because various drawout cubicles (comprise MNSG cabinet, GCS, GCK and novel universal cabinet) breaker of plastic casing in drawer in cabinet type, once enter, outlet terminal position is relatively fixing, like this, in drawer, remaining space is very limited, if secondary component configuration is too many in drawer, close, the type selectings such as separating brake relay are slightly improper all can be caused because element peace in drawer can not load, or all elements are difficult to normal heat radiation when being arranged on reluctantly in drawer but causing equipment normally to move, to the life-span of components and parts and safety in utilization, be all very large test like this, also for fault is in the future buried no small hidden danger.So, in the situation that drawer space is very limited, how simplifying configuration and realize that same control requires is many designer's questions of common interest.
Summary of the invention
For solving the problems of the technologies described above, the object of this invention is to provide a kind of low-tension motor control system of simplifying circuit structure.
The technical solution used in the present invention is:
A low-tension motor control system, is characterized in that:
Comprise a power circuit and a ZKK control loop;
Described power circuit consists of the breaker of plastic casing connecting successively from three-phase alternating-current supply A, B, C phase line, plug-in unit, an induction-motor load;
Described ZKK control loop comprises a ZKK motor-operating mechanism by DC power supply and at least one group of closing circuit being connected with ZKK motor-operating mechanism and sub-gate circuit, and described ZKK motor-operating mechanism is for controlling combined floodgate and the separating brake of breaker of plastic casing.
Described closing circuit and sub-gate circuit have two groups, and one group is closing circuit and the sub-gate circuit of controlling on the spot, and another group is closing circuit and the sub-gate circuit that a distant place is controlled.
The described closing circuit of controlling on the spot consists of the change over switch, switch knob, travel switch, the auxiliary relay normally-closed contact that are serially connected in ZKK motor-operating mechanism two ends; The described sub-gate circuit of controlling on the spot consists of the change over switch, opening button, the auxiliary relay normally opened contact that are serially connected in ZKK motor-operating mechanism two ends; The closing circuit that a described distant place is controlled consists of the change over switch, DCS closing switch, travel switch, the auxiliary relay normally-closed contact that are serially connected in ZKK motor-operating mechanism two ends; The sub-gate circuit that a described distant place is controlled consists of the change over switch, DCS separating brake switch, the auxiliary relay normally opened contact that are serially connected in ZKK motor-operating mechanism two ends; The auxiliary normally opened contact of the coil of described auxiliary relay and breaker of plastic casing is connected on the positive-negative output end of described DC power supply.
Described sub-gate circuit is parallel with an off-position trip switch.
The auxiliary normally opened contact of the coil of described auxiliary relay and breaker of plastic casing forms Chuan road and is parallel with red light indicating circuit and green light indicating circuit, wherein, red light indicating circuit is in series by the auxiliary normally opened contact of red light and auxiliary relay, and green light indicating circuit is in series by the auxiliary normally-closed contact of green light and auxiliary relay.
The positive-negative output end of described DC power supply is provided with control switch.
Beneficial effect of the present invention:
Low-tension motor control system of the present invention has been cancelled the contactor of configuration in former loop, for main switch in loop is breaker of plastic casing configuration motor-operating mechanism; This kind of scheme can be simplified control loop, in former scheme (seeing accompanying drawing 1), closing relay HJ, separating brake relay TJ and contactor C all cancel, and the space that breaker of plastic casing configuration motor-operating mechanism scheme requires than original contactor scheme in space requirement is much smaller; The scheme of moulding shell band motor-operating mechanism not only meets original control and requires and simplified secondary configuration, and in drawer, space is larger, and the normal heat radiation while being more conducive to equipment operation is beneficial to the long-term safety operation of equipment.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described further.
Fig. 1 is the power circuit schematic diagram of conventional low motor control system;
Fig. 2 is the control loop schematic diagram of conventional low motor control system;
Fig. 3 is the power circuit schematic diagram of low-tension motor control system of the present invention;
Fig. 4 is the control loop schematic diagram of low-tension motor control system of the present invention.
Embodiment
Shown in figure 3, Fig. 4, be a kind of low-tension motor control system of the present invention, comprise a power circuit and a ZKK control loop;
Wherein, described power circuit consists of the breaker of plastic casing ZKK connecting successively from three-phase alternating-current supply A, B, C phase line, plug-in unit 100, an induction-motor load D, sees Fig. 3;
As shown in Figure 4, described ZKK control loop comprises a ZKK motor-operating mechanism M by DC power supply+KM2 ,-KM2 power supply and at least one group of closing circuit being connected with ZKK motor-operating mechanism M and sub-gate circuit, described ZKK motor-operating mechanism M is for controlling combined floodgate and the separating brake of breaker of plastic casing ZKK, positive-negative output end+the KM2 of described DC power supply ,-KM2 are provided with control switch DK, and control switch DK is miniature circuit breaker in this example.
Described closing circuit and sub-gate circuit have two groups, and one group is closing circuit and the sub-gate circuit of controlling on the spot, and another group is closing circuit and the sub-gate circuit that a distant place is controlled.
The described closing circuit of controlling on the spot consists of change over switch ZK, the switch knob HA, travel switch YW, the intermediate relay ZJ normally-closed contact that are serially connected in ZKK motor-operating mechanism M two ends S1, S2; The described sub-gate circuit of controlling on the spot consists of change over switch ZK, the opening button TA, the intermediate relay ZJ normally opened contact that are serially connected in ZKK motor-operating mechanism M two ends S1, S4;
The closing circuit that a described distant place is controlled consists of the change over switch ZK, DCS closing switch, travel switch YW, the intermediate relay ZJ normally-closed contact that are serially connected in ZKK motor-operating mechanism M two ends S1, S2; The sub-gate circuit that a described distant place is controlled consists of the change over switch ZK, DCS separating brake switch, the intermediate relay ZJ normally opened contact that are serially connected in ZKK motor-operating mechanism M two ends S1, S4;
The auxiliary normally opened contact OF/ZKK of the coil of described intermediate relay ZJ and breaker of plastic casing ZKK is connected on the positive-negative output end of described DC power supply.
Above-mentioned sub-gate circuit is parallel with an off-position trip switch SW, for emergency, implements trip signal or this loop of upper end current supply circuit connection jumping.
The auxiliary normally opened contact OF/ZKK of the coil of described auxiliary relay and breaker of plastic casing ZKK forms Chuan road and is parallel with red light indicating circuit and green light indicating circuit, wherein, red light indicating circuit is in series by the auxiliary normally opened contact of red light HD and intermediate relay ZJ, and green light indicating circuit is in series by the auxiliary normally-closed contact of green light LD and intermediate relay ZJ.
Its operation principle is:
A. start: drawer travel switch YW when service position is closed for drawer, it is that in ZKK closing circuit, ZJ keeps close point state that relay ZJ wire loop access failure event ZJ contact remains unchanged, control loop miniature circuit breaker DK control loop obtains electric, after ZKK operating power obtains in preparing "on" position, if now change over switch ZK switches to regard to position ZK:3, between ZK:4, connect, press switch knob HA ZKK closing circuit obtain electric and close a floodgate, because of electric operation mechanism for breaker with plastics casing be that after therefore mechanical self-retaining closes a floodgate, even if HA resets and disconnects ZKK and also can self-sustaining close a floodgate, breaker of plastic casing combined floodgate posterior end is loaded to such an extent that electricly normally move (if change over switch ZK switches to ZK:1 of distant place state, between ZK:2, connect, after DCS end is sent out starting command, program is closed a floodgate and mechanical self-sustaining "on" position with the same breaker of plastic casing that causes after HA closure),
B. shut down: connect a state, after ZKK closes a floodgate its auxiliary magnet OF after OF/ZKK action becomes close point in figure intermediate relay ZJ coil obtain electric rear ZJ auxiliary contact action, in ZKK trip(ping) circuit, ZJ is made war closed, if change over switch ZK switches to regard to position ZK:3, between ZK:4, connect, press trip button TA ZKK trip(ping) circuit obtain and electricly trip to ZKK, lower end load because of dead electricity out of service (if change over switch ZK switches to ZK:1 of distant place state, between ZK:2, connect, after DCS end is sent out starting command, program trips with the same breaker of plastic casing ZKK that causes after TA closure, lower end load is out of service).
Low-tension motor control system of the present invention has been cancelled the contactor of configuration in former loop, for main switch in loop is breaker of plastic casing configuration motor-operating mechanism; This kind of scheme can be simplified control loop, in former scheme (seeing accompanying drawing 1), closing relay HJ, separating brake relay TJ and contactor C all cancel, and the space that breaker of plastic casing configuration motor-operating mechanism scheme requires than original contactor scheme in space requirement is much smaller; The scheme of moulding shell band motor-operating mechanism not only meets original control and requires and simplified secondary configuration, and in drawer, space is larger, and the normal heat radiation while being more conducive to equipment operation is beneficial to the long-term safety operation of equipment.This scheme is in drawer transformation or drawer allocatable space is limited and must control on/off switch far away, uses the good solution of can yet be regarded as in frequent start-stop loop.
The foregoing is only preferential execution mode of the present invention, the present invention is not limited to above-mentioned execution mode, as long as within the technical scheme that realizes the object of the invention with basic identical means all belongs to protection scope of the present invention.
Claims (6)
1. a low-tension motor control system, is characterized in that:
Comprise a power circuit and a ZKK control loop;
Described power circuit consists of the breaker of plastic casing connecting successively from three-phase alternating-current supply A, B, C phase line, plug-in unit, an induction-motor load;
Described ZKK control loop comprises a ZKK motor-operating mechanism by DC power supply and at least one group of closing circuit being connected with ZKK motor-operating mechanism and sub-gate circuit, and described ZKK motor-operating mechanism is for controlling combined floodgate and the separating brake of breaker of plastic casing.
2. a kind of low-tension motor control system according to claim 1, it is characterized in that: described closing circuit and sub-gate circuit have two groups, one group is closing circuit and the sub-gate circuit of controlling on the spot, and another group is closing circuit and the sub-gate circuit that a distant place is controlled.
3. a kind of low-tension motor control system according to claim 2, is characterized in that: the described closing circuit of controlling on the spot consists of the change over switch, switch knob, travel switch, the auxiliary relay normally-closed contact that are serially connected in ZKK motor-operating mechanism two ends; The described sub-gate circuit of controlling on the spot consists of the change over switch, opening button, the auxiliary relay normally opened contact that are serially connected in ZKK motor-operating mechanism two ends; The closing circuit that a described distant place is controlled consists of the change over switch, DCS closing switch, travel switch, the auxiliary relay normally-closed contact that are serially connected in ZKK motor-operating mechanism two ends; The sub-gate circuit that a described distant place is controlled consists of the change over switch, DCS separating brake switch, the auxiliary relay normally opened contact that are serially connected in ZKK motor-operating mechanism two ends; The auxiliary normally opened contact of the coil of described auxiliary relay and breaker of plastic casing is connected on the positive-negative output end of described DC power supply.
4. a kind of low-tension motor control system according to claim 2, is characterized in that: described sub-gate circuit is parallel with an off-position trip switch.
5. a kind of low-tension motor control system according to claim 3, it is characterized in that: the auxiliary normally opened contact of the coil of described auxiliary relay and breaker of plastic casing forms Chuan road and is parallel with red light indicating circuit and green light indicating circuit, wherein, red light indicating circuit is in series by the auxiliary normally opened contact of red light and auxiliary relay, and green light indicating circuit is in series by the auxiliary normally-closed contact of green light and auxiliary relay.
6. according to the arbitrary described a kind of low-tension motor control system of claim 1-5, it is characterized in that: the positive-negative output end of described DC power supply is provided with control switch.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410036857.9A CN103746632B (en) | 2014-01-24 | 2014-01-24 | A kind of low-voltage motor control system |
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| CN201410036857.9A CN103746632B (en) | 2014-01-24 | 2014-01-24 | A kind of low-voltage motor control system |
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| CN103746632A true CN103746632A (en) | 2014-04-23 |
| CN103746632B CN103746632B (en) | 2016-02-24 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106100511A (en) * | 2016-07-12 | 2016-11-09 | 东北大学设计研究院（有限公司） | A kind of control device of DCS room 10kV motor |
| CN106329702A (en) * | 2015-06-24 | 2017-01-11 | 无锡阿比利德电力科技有限公司 | Dual power supply automatic switching device |
| CN111244810A (en) * | 2020-03-27 | 2020-06-05 | 大唐贵州发耳发电有限公司 | Switching-on and switching-off signal circuit of equipment switch |
| CN112701589A (en) * | 2020-12-30 | 2021-04-23 | 上海昱章电气成套设备有限公司 | Circuit breaker cabinet |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201044426Y (en) * | 2007-02-16 | 2008-04-02 | 长庆石油勘探局水电厂 | Water source well combination control protection cabinet |
| CN201514560U (en) * | 2009-07-24 | 2010-06-23 | 德力西电气有限公司 | Circuit of intelligent plastic case relay controller |
| CN103199614A (en) * | 2013-03-28 | 2013-07-10 | 辽宁华冶集团发展有限公司 | Two-way alternating current inlet wire and connection power distribution control method |
| CN203278710U (en) * | 2013-05-16 | 2013-11-06 | 合肥申通电力科技有限公司 | A New Electromechanical Microcomputer Magnetic Control Device |
| CN203708166U (en) * | 2014-01-24 | 2014-07-09 | 中山市明阳电器有限公司 | Low-voltage motor control system |
-
2014
- 2014-01-24 CN CN201410036857.9A patent/CN103746632B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201044426Y (en) * | 2007-02-16 | 2008-04-02 | 长庆石油勘探局水电厂 | Water source well combination control protection cabinet |
| CN201514560U (en) * | 2009-07-24 | 2010-06-23 | 德力西电气有限公司 | Circuit of intelligent plastic case relay controller |
| CN103199614A (en) * | 2013-03-28 | 2013-07-10 | 辽宁华冶集团发展有限公司 | Two-way alternating current inlet wire and connection power distribution control method |
| CN203278710U (en) * | 2013-05-16 | 2013-11-06 | 合肥申通电力科技有限公司 | A New Electromechanical Microcomputer Magnetic Control Device |
| CN203708166U (en) * | 2014-01-24 | 2014-07-09 | 中山市明阳电器有限公司 | Low-voltage motor control system |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106329702A (en) * | 2015-06-24 | 2017-01-11 | 无锡阿比利德电力科技有限公司 | Dual power supply automatic switching device |
| CN106100511A (en) * | 2016-07-12 | 2016-11-09 | 东北大学设计研究院（有限公司） | A kind of control device of DCS room 10kV motor |
| CN106100511B (en) * | 2016-07-12 | 2018-04-03 | 东北大学设计研究院（有限公司） | A kind of control device of DCS rooms 10kV motor |
| CN111244810A (en) * | 2020-03-27 | 2020-06-05 | 大唐贵州发耳发电有限公司 | Switching-on and switching-off signal circuit of equipment switch |
| CN112701589A (en) * | 2020-12-30 | 2021-04-23 | 上海昱章电气成套设备有限公司 | Circuit breaker cabinet |
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| CN103746632B (en) | 2016-02-24 |
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Effective date of registration: 20200421 Address after: 528400 No.1, Hengmen Xingye West Road, Nanlang Town, Zhongshan City, Guangdong Province Patentee after: Guangdong Mingyang Electric Co., Ltd Address before: 528437 Jiangling West Road, Torch Development Zone, Guangdong, No. 25, No. Patentee before: ZHONGSHAN MINGYANG ELECTRIC Co.,Ltd. |
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Address after: No.1, Hengmen Xingye West Road, Nanlang Town, Zhongshan City, Guangdong Province, 528400 Patentee after: Guangdong Mingyang Electric Co.,Ltd. Address before: No.1, Hengmen Xingye West Road, Nanlang Town, Zhongshan City, Guangdong Province, 528400 Patentee before: Guangdong Mingyang Electric Co.,Ltd. |
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