CN205911971U - Three -phase rolling door machine circuit of taking open -phase protection of braking circuit connection in series -parallel setting - Google Patents
Three -phase rolling door machine circuit of taking open -phase protection of braking circuit connection in series -parallel setting Download PDFInfo
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- CN205911971U CN205911971U CN201620947717.1U CN201620947717U CN205911971U CN 205911971 U CN205911971 U CN 205911971U CN 201620947717 U CN201620947717 U CN 201620947717U CN 205911971 U CN205911971 U CN 205911971U
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Abstract
The utility model relates to a three -phase rolling door machine circuit of taking open -phase protection of braking circuit connection in series -parallel setting, include the main circuit that constitutes by circuit breaker, ascending contactor, descending contactor and three -phase AC rolling door machine motor, by three phase bridge, brake the solenoid braking circuit and the control circuit that constitute, brake solenoid is equipped with parallel winding and series winding, parallel winding connects three congruence zero lines of taking a fancy to at the power input end, series winding connects three phase bridge's output, and the three -phase winding's of motor end is connected to three phase bridge's input, control circuit is including going upward control circuit, down control circuit, going upward A looks phase loss protection circuit and down C looks phase loss protection circuit. The utility model discloses can effectively carry out the open -phase protection to rolling door machine, the solenoid that enables simultaneously to brake gains better brake effect, practices thrift the electric energy.
Description
Technical field
This utility model is related to rolling screen door technical field, and more particularly, to a kind of band phase shortage of braking circuit connection in series-parallel setting is protected
The three-phase door roller circuit of shield.
Background technology
Electric rolling door is widely applied in places such as StoreFront, garages, and electric rolling door lifting is driven by door roller,
Door roller is driven by motor, is additionally provided with the parts such as brake gear, stop, operation button.A part of existing rolling screen door is by three
Cross streams door roller drives, and typically carries out switching on and shutting down using air switch or catalyst, in use, usually due to power supply
The reason such as wiring circuit contact is bad causes certain one-phase open circuit in three-phase line, causes three phase alternating current motor to burn, in prior art,
Frequently with installing open phase protector in supply line, open-phase protection is carried out to three phase electric machine, but open phase protector is mostly using resistance
The electronic original parts such as appearance, because the electronic components such as capacitance-resistance are after working after a while, part characteristic can change, particularly
Easily affected by the extraneous such as factor such as thunder and lightning, humidity, led to job insecurity, and once broken down not easy-maintaining.
Secondly, existing three-phase alternating current door roller brake gear is mainly by brake disc, brake block, brake spring and electric magnet
(brake solenoid) forms, and under door roller halted state, promotes brake block extruding brake disc to carry out by the thrust of brake spring
Brake；During door roller work, electric magnet energising attracts brake block, so that brake block is separated with brake disc and opens brake system, always
Door roller is maintained to shut down.Traditional three-phase alternating current door roller brake solenoid is usually directly to be supplied by live wire and zero line
Electricity, the winding of brake solenoid and alternating current generator is to be arranged in parallel, and the voltage at its two ends is constant, therefore, no matter being electricity
The moment of brake system is opened in Magnet energising, still opens the maintenance state after brake system, and the electric current of brake solenoid is big
Little is identical.In fact, before electric magnet is not operating, because the iron core of electric magnet and brake block have a certain distance, the two it
Between there is magnetic gap, the moment of electromagnet action needs larger electric current, and after electric magnet closure, unshakable in one's determination and brake block tightly combines,
Form closed magnetic circuit, magnetic flux increases, maintain the electric current of electric magnet closure can greatly reduce.Therefore, existing exchange door roller
Braking circuit can be opened rear braking solenoid current because of brake system and not reduce, and lead to solenoid heating of braking, waste
Electric energy, has an effect on the overall performance of brake system.
Utility model content
This utility model overcomes the deficiencies in the prior art, there is provided the three-phase rolling door that can effectively carry out open-phase protection is dynamo-electric
Road, can make brake solenoid obtain preferable braking effect, saves energy simultaneously.
This utility model is achieved through the following technical solutions:
A kind of three-phase door roller circuit with open-phase protection of braking circuit connection in series-parallel setting, including by chopper, up
The main circuit that catalyst, descending catalyst and three-phase alternating current door roller motor are constituted, by three-phase commutation bridge, brake solenoid structure
The braking circuit becoming and control circuit；Described chopper input connects a phase, b phase and the c phase of three phase mains respectively；Described
Upcoming contact device is used for controlled motor and rotates forward enabling, and one end of its three main contacts connects the outfan of chopper respectively, another
End connects the head end of motor three-phase windings respectively；Described descending catalyst is used for controlled motor reversion and closes the door, its three main contacts
One end connect the outfan of chopper respectively, the other end connects the head end of motor three-phase windings respectively；Described brake electromagnetic wire
Circle is provided with parallel winding and series connection winding；The two ends of described parallel winding connect any phase in input end of motor three-phase respectively
Zero line with power supply；The two ends of described series connection winding connect the outfan of three-phase commutation bridge, the input of three-phase commutation bridge respectively
Connect the end of the three-phase windings of motor respectively；Described control circuit includes upload control circuit, lower line control circuit, up a
Phase open-phase protection circuit and descending c phase open-phase protection circuit；
The c phase of chopper outfan that described upload control circuit includes being serially connected, normally opened up button, descending contact
Normally closed first auxiliary contact of device, the b phase of upcoming contact device coil, stop button and chopper outfan；
The a phase of chopper outfan that described lower line control circuit includes being serially connected, normally opened descending button, upcoming contact
Normally closed first auxiliary contact of device, the b phase of descending contactor coil, stop button and chopper outfan；
The a phase of chopper outfan that described up a phase open-phase protection circuit includes being serially connected, upcoming contact device are normally opened
The zero line of the second auxiliary contact, the first open-phase protection relay coil and power supply；Described first open-phase protection relay normally opened
Contact and the parallel connection self-locking of up button；
The c phase of chopper outfan that described descending c phase open-phase protection circuit includes being serially connected, descending catalyst are normally opened
The zero line of the second auxiliary contact, the second open-phase protection relay coil and power supply；Described second open-phase protection relay normally opened
Contact and descending button parallel connection self-locking.
Operation principle of the present utility model is: when will open rolling screen door, close chopper, presses up button, up control
Circuit ON processed, upcoming contact device energized action, its main contacts closure, normally opened auxiliary contact closure, normally closed auxiliary contact disconnect,
Main circuit is connected, and motor rotates forward up；After normally closed first auxiliary contact of upcoming contact device disconnect, lower line control circuit is risen mutually
Lock acts on, even if now pressing descending button, lower line control circuit also will not be connected；After normally opened second auxiliary contact closure, the
One open-phase protection relay energized action, its normally opened contact closes, and to the parallel connection self-locking of up button, now unclamps up button not
The operation of motor can be affected；As shut down, press stop button cut-out upload control circuit, upcoming contact device dead electricity, main contacts
Disconnect, motor is out of service, and the auxiliary contact of upcoming contact device also all reset, and the first open-phase protection relay also resets.Due to
Upload control circuit connects b phase and the c phase of power supply, therefore this biphase open-phase protection that just plays is acted on, as long as there being a phase phase shortage,
Upload control circuit just disconnects, and upcoming contact device just cannot obtain electric, and main circuit is just not turned on；First open-phase protection relay pair
Power supply a phase plays open-phase protection effect, and during a phase phase shortage, the first open-phase protection relay cannot obtain electric, and its normally opened contact cannot close
Close, up button cannot obtain self-locking in parallel, as long as unclamping up button, upload control circuit also and then disconnects, upcoming contact
Device cannot energized action.
In the same manner, when will close rolling screen door, close chopper, presses descending button, and lower line control circuit is connected, descending contact
Device energized action, its main contacts closure, normally opened auxiliary contact closure, normally closed auxiliary contact disconnect, and main circuit is connected, motor reversal
Descending；After normally closed first auxiliary contact of descending catalyst disconnect, upload control circuit is risen with interlocked and uses, even if now pressing
Up button, upload control circuit nor connection；After normally opened second auxiliary contact closure, the second open-phase protection relay obtains electric
Action, its normally opened contact closes, and to descending button parallel connection self-locking, now unclamps the operation that descending button does not interfere with motor；As
Shut down, press the lower line control circuit of stop button cut-out, descending catalyst dead electricity, main contacts disconnects, and motor is out of service, under
The auxiliary contact of row catalyst also all reset, and the second open-phase protection relay also resets.Because lower line control circuit connects power supply
A phase and b phase, therefore this biphase open-phase protection that just plays is acted on, as long as there being a phase phase shortage, lower line control circuit just disconnects, under
Row catalyst just cannot obtain electric, and main circuit is just not turned on；Second open-phase protection relay plays open-phase protection and makees to power supply c phase
With, during c phase phase shortage, the second open-phase protection relay cannot obtain electric, and its normally opened contact cannot close, and descending button cannot obtain simultaneously
Connection self-locking, as long as unclamping descending button, lower line control circuit also and then disconnects, and descending catalyst cannot energized action.
In the technical program, the parallel winding of brake solenoid is equivalent to, its work in parallel with the three-phase windings of motor
Electric current and the electromagnetic force producing are constant before and after electric motor starting；Series connection winding is equivalent to the three-phase windings series connection with motor,
In electric motor starting, starting current is larger, generally the 3～5 of running current times, and the electric current of series connection winding is also normal work
Make electric current 3～5 times, series connection winding produces larger electromagnetic force, adds that the electromagnetic force that parallel winding produces makes brake block overcome
The thrust of brake spring separates with brake disc, and opening brake system makes motor normally start, and after electric motor starting, electric current reduces rapidly,
The electric current of series connection winding also reduces rapidly, but now brake system is in open mode, only needs less electric current can maintain
Open mode, the electromagnetic force of series connection winding and the electromagnetic force of parallel winding can continue to open mode, thus can significantly subtract
The power of little parallel winding, makes brake solenoid temperature rise little, saves energy, and job stability is high；And maintain brake system
The electromagnetic force of open mode is by parallel winding and the common offer of series connection winding, and individually provides electromagnetic force phase by series connection winding
Relatively, it is possible to reduce the number of turn of series connection winding, it is to avoid the service behaviour of impact motor.
Further, the impedance of described series connection winding is the 2%～4% of motor three-phase windings impedance.Stop series connection winding impedance
It is in during this scope and the power of motor is affected less, do not interfere with the normal work of motor, series connection winding can provide enough
Electromagnetic force, performance reaches preferable state.
Further, also include single-phase rectification bridge, the input of this single-phase rectification bridge connects in input end of motor three-phase respectively
Any phase and power supply zero line；Outfan connects the two ends of parallel winding respectively.Alternating current is rectified into through single-phase rectification bridge
Input parallel winding after unidirectional current, parallel winding work can be made more stable.
Further, it is in series with a normally closed up limitation travel switch in described upload control circuit and lower line control circuit.
Arrange up limitation travel switch to be automatically stopped in predetermined position, when up limitation travel switch for when making rolling screen door up
During action, normally-closed contact disconnects, and cuts off upload control circuit, and upcoming contact device disconnects cut-out main circuit, motor stalls.
Further, it is in series with a normally closed descending limitation travel switch in described upload control circuit and lower line control circuit.
Arrange descending limitation travel switch to be automatically stopped in predetermined position, when descending limitation travel switch for when making rolling screen door descending
During action, normally-closed contact disconnects, the lower line control circuit of cut-out, and descending catalyst disconnects cut-out main circuit, motor stalls.
The beneficial effects of the utility model are: upload control circuit and lower line control circuit accessed between phase line, can be right
The phase line being accessed plays effective open-phase protection effect；Up a phase open-phase protection circuit is connected a phase and the zero line of power supply, its
The normally opened contact of the first open-phase protection relay and the parallel connection self-locking of up button, can play effective open-phase protection effect to a phase；Will
Descending c phase open-phase protection circuit connects c phase and the zero line of power supply, the normally opened contact of its second open-phase protection relay and descending press
Button parallel connection self-locking, can play effective open-phase protection effect to c phase；Open-phase protection element does not have electronic component, working stability；Will
Brake solenoid is divided into parallel winding and series connection winding, provides stable electromagnetic force by parallel winding, and series connection winding can be in volume
Door machine produces larger electromagnetic force when starting and opens brake system rapidly, can reduce work electricity after opening brake system accordingly again
Stream, reduces the overall power of brake solenoid, makes brake solenoid temperature rise little, and saves energy does not interfere with door roller again
The service behaviour of motor.
Brief description
Fig. 1 is circuit diagram of the present utility model.
Specific embodiment
Below in conjunction with the accompanying drawings preferred embodiment of the present utility model is described in detail, so that advantage of the present utility model
Can be easier to be readily appreciated by one skilled in the art with feature, thus make apparent clear and definite to protection domain of the present utility model
Define.
As shown in figure 1, embodiment of the present utility model, including by chopper qf, upcoming contact device km1, descending catalyst
The main circuit that km2 and three-phase alternating current door roller motor m is constituted, the braking electricity being made up of three-phase commutation bridge ur2, brake solenoid
Road and control circuit；Described chopper qf input connects a phase, b phase and the c phase of three phase mains respectively；Described upcoming contact
Device km1 is used for controlled motor m and rotates forward enabling, and one end of its three main contacts km1-1 connects the outfan of chopper qf, separately respectively
One end connects head end u, v, w of motor m three-phase windings respectively；Described descending catalyst km2 is used for the reversion of controlled motor m and closes the door,
One end of its three main contacts km2-1 connects the outfan of chopper qf respectively, and the other end connects motor m three-phase windings respectively
Head end u, v, w；Described brake solenoid is provided with parallel winding ya1 and series connection winding ya2；The two ends of described parallel winding ya1
The zero line n of any phase (as w phase) in connection motor m input u, v, w three-phase and power supply respectively；Described series connection winding ya2
Two ends connect the outfan of three-phase commutation bridge ur2 respectively, the input of three-phase commutation bridge ur2 connects the three-phase of motor m respectively
The end x, y, z of winding；Described control circuit includes upload control circuit, lower line control circuit, up a phase open-phase protection circuit
With descending c phase open-phase protection circuit；
The c phase of chopper qf outfan that described upload control circuit includes being sequentially connected in series, normally opened up button sb1, under
The normally closed first auxiliary contact km2-2 of row catalyst km2, upcoming contact device km1 coil, stop button sb3 and chopper qf are defeated
Go out the b phase at end；
The a phase of chopper qf outfan that described lower line control circuit includes being sequentially connected in series, normally opened descending button sb2, on
The normally closed first auxiliary contact km1-2 of row catalyst km1, descending catalyst km2 coil, stop button sb3 and chopper qf are defeated
Go out the b phase at end；
Described up a phase open-phase protection circuit includes a phase of chopper qf outfan, the upcoming contact device being sequentially connected in series
The zero line n of the normally opened second auxiliary contact km1-3 of km1, the first open-phase protection relay k1 coil and power supply；Described first phase shortage is protected
The normally opened contact k1 and up button sb1 parallel connection self-locking of shield relay；
The c phase of chopper qf outfan that described descending c phase open-phase protection circuit includes being sequentially connected in series, descending catalyst
The zero line n of the normally opened second auxiliary contact km2-3 of km2, the second open-phase protection relay k2 coil and power supply；Described second phase shortage is protected
The normally opened contact k2 of shield relay and the parallel connection self-locking of descending button sb2.
The operation principle of the present embodiment is: when will open rolling screen door, close chopper qf, presses up button sb1, up
Control circuit is connected, upcoming contact device km1 energized action, and its main contacts km1-1 closure, normally opened auxiliary contact km1-3 close, often
Close auxiliary contact km1-2 to disconnect, main circuit is connected, motor m rotates forward up；Normally closed first auxiliary contact of upcoming contact device km1
After km1-2 disconnects, lower line control circuit is risen with interlocked and uses, even if now pressing descending button sb2, lower line control circuit is not yet
Can turn on；After normally opened second auxiliary contact km1-3 closure, the first open-phase protection relay k1 energized action, its normally opened contact k1
Closure, to the parallel connection self-locking of up button, now unclamps the operation that up button sb1 does not interfere with motor m；As shut down, press
Stop button sb3 cuts off upload control circuit, upcoming contact device km1 dead electricity, and main contacts km1-1 disconnects, and motor m is out of service,
The auxiliary contact of upcoming contact device km1 also all reset, and the first open-phase protection relay k1 also resets.Due to upload control circuit even
Connecing b phase and the c phase of power supply, therefore this biphase open-phase protection that just plays being acted on, as long as there being a phase phase shortage, upload control circuit is just
Disconnect, upcoming contact device km1 just cannot obtain electric, and main circuit is just not turned on；First open-phase protection relay k1 is to power supply a phase
Play open-phase protection effect, during a phase phase shortage, the first open-phase protection relay k1 cannot obtain electric, and its normally opened contact k1 cannot close,
Up button sb1 cannot obtain self-locking in parallel, as long as unclamping up button sb1, upload control circuit also and then disconnects, and up connects
Tentaculum km1 cannot energized action.
In the same manner, when will close rolling screen door, close chopper qf, presses descending button sb2, and lower line control circuit is connected, under
Row catalyst km2 energized action, its main contacts km2-1 closure, normally opened auxiliary contact km2-3 closure, normally closed auxiliary contact km2-2
Disconnect, main circuit is connected, motor m reversion is descending；After the normally closed first auxiliary contact km2-2 of descending catalyst km2 disconnects, to upper
Line control circuit plays interlocked and uses, even if now pressing up button sb1, upload control circuit nor connection；Normally opened second
After auxiliary contact km2-3 closure, the second open-phase protection relay k2 energized action, its normally opened contact k2 closes, to descending button
Self-locking in parallel, now unclamps the operation that descending button sb2 does not interfere with motor；As shut down, press under stop button sb3 cut-out
Line control circuit, descending catalyst km2 dead electricity, main contacts km2-1 disconnects, and motor m is out of service, and descending catalyst km2's is auxiliary
Contact is helped also all to reset, the second open-phase protection relay k2 also resets.Because lower line control circuit connects a phase and the b of power supply
Phase, therefore acts on to this biphase open-phase protection that just plays, as long as there being a phase phase shortage, lower line control circuit just disconnects, descending catalyst
Km2 just cannot obtain electric, and main circuit is just not turned on；Second open-phase protection relay k2 plays open-phase protection effect, c to power supply c phase
During phase phase shortage, the second open-phase protection relay k2 cannot obtain electric, and its normally opened contact k2 cannot close, and descending button sb2 cannot obtain
Obtain self-locking in parallel, as long as unclamping descending button sb2, lower line control circuit also and then disconnects, and descending catalyst km2 cannot obtain electronic
Make.
In the present embodiment, parallel winding ya1 of brake solenoid is equivalent to, its work in parallel with the three-phase windings of motor m
Making electric current and the electromagnetic force of generation is constant before and after motor m starts；Series connection winding ya2 be equivalent to the three-phase of motor m around
Group series connection, when motor m starts, starting current is larger, generally the 3～5 of running current times, the electricity of series connection winding ya2
Stream is also 3～5 times of running current, and series connection winding ya2 produces larger electromagnetic force, adds what parallel winding ya1 produced
Electromagnetic force makes brake block overcome the thrust of brake spring to separate with brake disc, and opening brake system makes motor m normally start, motor
After m starts, electric current reduces rapidly, and the electric current of series connection winding ya2 also reduces rapidly, but now brake system is in open mode,
Only need less electric current can be maintained open state, the electromagnetic force of series connection winding ya2 and the electromagnetic force of parallel winding ya1 can continue
It is maintained open state, thus can greatly reduce the power of parallel winding ya1, make brake solenoid temperature rise little, saves energy,
Job stability is high；And maintain brake system open mode electromagnetic force be by parallel winding ya1 and series connection winding ya2 common
There is provided, provide electromagnetic force to compare with independent by series connection winding, it is possible to reduce the number of turn of series connection winding, it is to avoid impact motor m
Service behaviour.
In the present embodiment, the impedance of described series connection winding ya2 is the 3% of the three-phase windings impedance of motor m, and connect winding ya2
Impedance be in during this value and the power of motor m affected less, do not interfere with the normal work of motor m, series connection winding ya2 can carry
For enough electromagnetic forces, performance reaches preferable state.
In the present embodiment, also include single-phase rectification bridge ur1, it is defeated that the input of this single-phase rectification bridge ur1 connects motor m respectively
Enter to hold the zero line n of any phase (as w phase) in u, v, w three-phase and power supply, outfan connects the two of parallel winding ya1 respectively
End.Alternating current is rectified into input parallel winding ya1 after unidirectional current through single-phase rectification bridge ur1, and parallel winding ya1 can be made to work more
Plus it is stable.
In the present embodiment, the stop button sb3 in described upload control circuit and lower line control circuit and chopper qf are defeated
It is provided with normally closed up limitation travel switch sq1 between the b phase going out end.Arrange up limitation travel switch sq1 to be used for making rolling screen door
It is automatically stopped in predetermined position when up, when up limitation travel switch sq1 action, normally-closed contact disconnects, and cut-out is up
Control circuit, upcoming contact device km1 disconnects cut-out main circuit, and motor m stops operating.
In the present embodiment, the stop button in described upload control circuit and lower line control circuit and chopper qf outfan
B phase between be provided with normally closed descending limitation travel switch sq2.Arrange descending limitation travel switch sq2 to be used for making rolling screen door descending
When be automatically stopped in predetermined position, when descending limitation travel switch sq2 action, normally-closed contact disconnect, cut off descending control
Circuit, descending catalyst km2 disconnects cut-out main circuit, and motor m stops operating.
The above, specific embodiment only of the present utility model, but protection domain of the present utility model does not limit to
In this, any change or replacement expected without creative work, all should cover within protection domain of the present utility model.
Therefore, protection domain of the present utility model should be defined by the protection domain that claims are limited.
Claims (5)
1. the three-phase door roller circuit with open-phase protection of a kind of braking circuit connection in series-parallel setting, including by chopper, up connect
The main circuit that tentaculum, descending catalyst and three-phase alternating current door roller motor are constituted, is made up of three-phase commutation bridge, brake solenoid
Braking circuit and control circuit；Described chopper input connects a phase, b phase and the c phase of three phase mains respectively；On described
Row catalyst is used for controlled motor and rotates forward enabling, and one end of its three main contacts connects the outfan of chopper, the other end respectively
Connect the head end of motor three-phase windings respectively；Described descending catalyst is used for controlled motor reversion and closes the door, its three main contacts
One end connects the outfan of chopper respectively, and the other end connects the head end of motor three-phase windings respectively；It is characterized in that: described stop
Car solenoid is provided with parallel winding and series connection winding；The two ends of described parallel winding connect in input end of motor three-phase respectively
Any phase and the zero line of power supply；The two ends of described series connection winding connect the outfan of three-phase commutation bridge, three-phase commutation bridge respectively
Input connect respectively motor three-phase windings end；Described control circuit includes upload control circuit, descending control electricity
Road, up a phase open-phase protection circuit and descending c phase open-phase protection circuit；
The c phase of chopper outfan that described upload control circuit includes being serially connected, normally opened up button, descending catalyst
Normally closed first auxiliary contact, the b phase of upcoming contact device coil, stop button and chopper outfan；
The a phase of chopper outfan that described lower line control circuit includes being serially connected, normally opened descending button, upcoming contact device
Normally closed first auxiliary contact, the b phase of descending contactor coil, stop button and chopper outfan；
Described up a phase open-phase protection circuit includes a phase of chopper outfan, the upcoming contact device normally opened second being serially connected
The zero line of auxiliary contact, the first open-phase protection relay coil and power supply；The normally opened contact of described first open-phase protection relay
With the parallel connection self-locking of up button；
Described descending c phase open-phase protection circuit includes the c phase of chopper outfan, the descending catalyst normally opened second being serially connected
The zero line of auxiliary contact, the second open-phase protection relay coil and power supply；The normally opened contact of described second open-phase protection relay
With descending button parallel connection self-locking.
2. the three-phase door roller circuit with open-phase protection of a kind of braking circuit connection in series-parallel setting according to claim 1,
It is characterized in that: the impedance of described series connection winding is the 2%～4% of motor three-phase windings impedance.
3. the three-phase door roller circuit with open-phase protection of a kind of braking circuit connection in series-parallel setting according to claim 1,
It is characterized in that: also include single-phase rectification bridge, the input of this single-phase rectification bridge connects appointing in input end of motor three-phase respectively
He Yixiang and the zero line of power supply；Outfan connects the two ends of parallel winding respectively.
4. the three-phase door roller circuit with open-phase protection of a kind of braking circuit connection in series-parallel setting according to claim 1,
It is characterized in that: it is in series with a normally closed up limitation travel switch in described upload control circuit and lower line control circuit.
5. the three-phase door roller circuit with open-phase protection of a kind of braking circuit connection in series-parallel setting according to claim 1,
It is characterized in that: it is in series with a normally closed descending limitation travel switch in described upload control circuit and lower line control circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620947717.1U CN205911971U (en) | 2016-08-26 | 2016-08-26 | Three -phase rolling door machine circuit of taking open -phase protection of braking circuit connection in series -parallel setting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620947717.1U CN205911971U (en) | 2016-08-26 | 2016-08-26 | Three -phase rolling door machine circuit of taking open -phase protection of braking circuit connection in series -parallel setting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205911971U true CN205911971U (en) | 2017-01-25 |
Family
ID=57801905
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620947717.1U Expired - Fee Related CN205911971U (en) | 2016-08-26 | 2016-08-26 | Three -phase rolling door machine circuit of taking open -phase protection of braking circuit connection in series -parallel setting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205911971U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109322608A (en) * | 2018-10-15 | 2019-02-12 | 李顺利 | A kind of roller shutter door opener End-Management circuit |
| CN110398639A (en) * | 2019-08-12 | 2019-11-01 | 合肥天鹅制冷科技有限公司 | A kind of three-phase alternating current adjust automatically detection circuit |
-
2016
- 2016-08-26 CN CN201620947717.1U patent/CN205911971U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109322608A (en) * | 2018-10-15 | 2019-02-12 | 李顺利 | A kind of roller shutter door opener End-Management circuit |
| CN110398639A (en) * | 2019-08-12 | 2019-11-01 | 合肥天鹅制冷科技有限公司 | A kind of three-phase alternating current adjust automatically detection circuit |
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Granted publication date: 20170125 Termination date: 20170826 |