CN205985760U - A motor control circuit for low -voltage switchgear - Google Patents
A motor control circuit for low -voltage switchgear Download PDFInfo
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- CN205985760U CN205985760U CN201620919655.3U CN201620919655U CN205985760U CN 205985760 U CN205985760 U CN 205985760U CN 201620919655 U CN201620919655 U CN 201620919655U CN 205985760 U CN205985760 U CN 205985760U
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- 239000003054 catalyst Substances 0.000 claims description 53
- 238000010586 diagram Methods 0.000 description 4
- 238000004804 winding Methods 0.000 description 3
- 230000005611 electricity Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000002688 persistence Effects 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000001413 cellular effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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Abstract
The utility model provides a motor control circuit for low -voltage switchgear, a serial communication port, include: first plug connector, the circuit breaker, current transformer, contactor group, electrothermal relay and second socket spare and third plug connector, wherein, contactor group is including first end, second end, third end and fourth end, first plug connector includes first socket, first socket with the one end of circuit breaker is connected, the other end of circuit breaker with current transformer's one end is connected, current transformer's the other end with the first end of contactor group is connected, the second end of contactor group is fixed connection, the third end of contactor group with electrothermal relay's one end is connected, second socket spare includes the second socket, the second socket with electrothermal relay's the other end is connected. The third plug connector includes the third socket, the third socket with the fourth end of contactor group is connected.
Description
Technical field
The present invention relates to electric field, more particularly, the present invention relate to the electromotor control circuit of low-tension switch cabinet.
Background technology
Low-tension switch cabinet is applied to the place of all generatings, distribution and electricity usage, such as motor and motor
Control centre, open loop and closed-loop control system electronic housing, power system, petrochemical industry, operating mode enterprise, public utilities, city's political and ideological work
Journey, commercial building etc..
The safety designing for switch cubicle of motor, convenience, operability, extensibility in this low-tension switch cabinet
Etc. aspect all there is significant impact.Good motor designs will be helpful to the safety of raising equipment, operability and can expand
Malleability, and effectively ensure safety the reduces cost of personnel.
Utility model content
The purpose of this utility model is to overcome circuit in prior art complicated, operation inconvenience, the more low defect of reliability.
This utility model provides a kind of electromotor control circuit for low-tension switch cabinet it is characterised in that its feature exists
In, including：First plug connector, chopper, current transformer, catalyst group, thermorelay and the second plug connector and the 3rd are inserted
Fitting, wherein, described catalyst group includes first end, the second end, the 3rd end and the 4th end；Described first plug connector includes first
Socket, described first socket is connected with one end of described chopper, the other end of described chopper and described current transformer
One end connects；The other end of described current transformer is connected with the first end of described catalyst group；The second of described catalyst group
Hold as fixed connection；3rd end of described catalyst group is connected with one end of described thermorelay；Described second plug connector bag
Include the second socket, described second socket is connected with the other end of described thermorelay；Described 3rd plug connector includes the 3rd socket,
Described 3rd socket is connected with the 4th end of described catalyst group；Described catalyst group includes first contactor, second contactor
With the 3rd catalyst, wherein, one end of one end of described first contactor and described second contactor and described current transformer
The other end connect, one end of described 3rd catalyst is fixed connection, the other end of described first contactor and described heat
One end connection, the other end of the other end of described second contactor and described 3rd catalyst and described 3rd grafting of relay
Part connects.
According to an embodiment of the present utility model, for the power of 30kW, the electric current of 56A, described thermorelay
(60) it is TA75DU42 type；
For the power of 37kW, the electric current of 68A, described thermorelay (60) is TA75DU52 type；
For the power of 45kW, the electric current of 83A, described thermorelay (60) is TA75DU63 type；
For the power of 55kW, the electric current of 98A, described thermorelay (60) is TA75DU63 type；
For the power of 75kW, the electric current of 135A, described thermorelay (60) is TA110DU90 type；
For the power of 90kW, the electric current of 158A, described thermorelay (60) is TA110DU110 type；
For the power of 110kW, the electric current of 193A, described thermorelay (60) is TA200DU135 type；
According to an embodiment of the present utility model, for the power of 30kW, the electric current of 56A, described first contactor
For A63 type, second contactor is A63 type, and the 3rd catalyst is A30 type；
For the power of 37kW, the electric current of 68A, described first contactor is A75 type, and second contactor is A75 type, the 3rd
Catalyst is A30 type；
For the power of 45kW, the electric current of 83A, described first contactor is A75 type, and second contactor is A75 type, the 3rd
Catalyst is A30 type；
For the power of 55kW, the electric current of 98A, described first contactor is A75 type, and second contactor is A75 type, the 3rd
Catalyst is A40 type；
For the power of 75kW, the electric current of 135A, described first contactor is A95 type, and second contactor is A95 type, the
Three catalysts are A75 type；
For the power of 90kW, the electric current of 158A, described first contactor is A110 type, and second contactor is A110 type,
3rd catalyst is A75 type；
For the power of 110kW, the electric current of 193A, described first contactor is A145 type, and second contactor is A145 type,
3rd catalyst is A95 type；
According to an embodiment of the present utility model, for the power of 30kW, the electric current of 56A, described chopper (20)
For S2X80R63 type；
For the power of 37kW, the electric current of 68A, described chopper (20) is S2X80R80 type；
For the power of 45kW, the electric current of 83A, described chopper (20) is S3H160RM125 type；
For the power of 55kW, the electric current of 98A, described chopper (20) is S3H160RM160 type；
For the power of 75kW, the electric current of 135A, described chopper (20) is S3H250RM250 type；
For the power of 90kW, the electric current of 158A, described chopper (20) is S3H250RM250 type；
For the power of 110kW, the electric current of 193A, described chopper (20) is S5H400R250 type；
The electromotor control circuit for low-tension switch cabinet that this utility model provides is applied to indoor installation low tension switch
Cabinet, can easily be updated improving；Equipment runs persistence and reliability is higher, and ensure that the person of operator
Safety.
Brief description
Fig. 1 is the block diagram according to the electromotor control circuit for low-tension switch cabinet of the present utility model；
Fig. 2 is the electrical connection schematic diagram according to the electromotor control circuit for low-tension switch cabinet of the present utility model；
Fig. 3 is the electrical schematics according to plug connector of the present utility model；
Fig. 4 is the electrical schematics according to chopper of the present utility model；
Fig. 5 is the electrical schematics according to current transformer of the present utility model；
Fig. 6 is the electrical schematics according to catalyst of the present utility model；And
Fig. 7 is the electrical schematics according to thermorelay of the present utility model.
Specific embodiment
Below in conjunction with accompanying drawing, specific embodiment of the present utility model is described in detail.
Fig. 1 is the block diagram according to the electromotor control circuit for low-tension switch cabinet of the present utility model.As shown in figure 1,
Electromotor control circuit for low-tension switch cabinet of the present utility model, including：It is characterized in that, including：First plug connector, breaks
Road device, current transformer, catalyst group, thermorelay and the second plug connector and the 3rd plug connector, wherein, described catalyst group
Including first end, the second end, the 3rd end and the 4th end；Described first plug connector includes the first socket, described first socket and institute
The one end stating chopper connects, and the other end of described chopper is connected with one end of described current transformer；Described Current Mutual Inductance
The other end of device is connected with the first end of described catalyst group；Second end of described catalyst group is fixed connection；Described connect
3rd end of tentaculum group is connected with one end of described thermorelay；Described second plug connector includes the second socket, and described second inserts
Seat is connected with the other end of described thermorelay；Described 3rd plug connector includes the 3rd socket, and described 3rd socket is connect with described
4th end of tentaculum group connects；Described catalyst group includes first contactor, second contactor and the 3rd catalyst, wherein, institute
One end of one end and described second contactor of stating first contactor is connected with the other end of described current transformer, and the described 3rd
One end of catalyst is fixed connection, and the other end of described first contactor is connected with one end of described thermorelay, described
The other end of the other end of second contactor and described 3rd catalyst is connected with described 3rd plug connector.
Fig. 2 is the electrical connection schematic diagram according to the electromotor control circuit for low-tension switch cabinet of the present utility model.
By Fig. 2, those skilled in the art can be better understood from how circuit of the present utility model is arranged, and between each part such as
What connects.
It is to be appreciated that the term " connection " in this utility model includes and is directly connected to and is indirectly connected with.Directly connect
Connect expression two there is not miscellaneous part between part or unit, and be indirectly connected with representing also exist between two parts one or
Multiple miscellaneous parts.
Fig. 3 is the electrical schematics according to plug connector of the present utility model.Although the plug connector shown in Fig. 3 includes slotting
Head and socket, but only can include socket in the entirety of the present invention, and plug is when can be external equipment be inserted in this socket
It is attached in this utility model.Plug connector can be cellular type, longitudinal and any suitable shape.
Fig. 4 is the electrical schematics according to chopper of the present utility model.Chopper (English name：circuit-
Breaker, circuit breaker) be refer to the electric current that closes, carry and cut-off under normal loop condition and can close,
Carry and cut-off the switching device of the electric current under abnormal loop condition within the time of regulation.Chopper can be used to distribute electric energy,
Infrequently start asynchronous motor, protection carried out to power circuit and motor etc., when they occur serious overloads or
Energy automatic shutdown circuit during the fault such as short-circuit and under-voltage, its function is equivalent to Fuse switch and crosses the group of underheat relay etc.
Close.And typically do not need to change parts after disjunction fault current.
Different working condition according to electromotor control circuit in low-tension switch cabinet and demand, open circuit of the present utility model
Device 20 can be following situation：For the power of 30kW, the electric current of 56A, described chopper (20) is S2X80R63 type；
For the power of 37kW, the electric current of 68A, described chopper (20) is S2X80R80 type；
For the power of 45kW, the electric current of 83A, described chopper (20) is S3H160 RM125 type；
For the power of 55kW, the electric current of 98A, described chopper (20) is S3H160 RM160 type；
For the power of 75kW, the electric current of 135A, described chopper (20) is S3H250 RM250 type；
For the power of 90kW, the electric current of 158A, described chopper (20) is S3H250RM250 type；
For the power of 110kW, the electric current of 193A, described chopper (20) is S5H400R250 type；
The chopper model being given in foregoing circuit is can to directly obtain from ABB AB, and because it is excellent
Performance and preferably mate with this utility model and become preferred version.This utility model can also adopt other appropriate types
Chopper.
Fig. 5 is the electrical schematics according to current transformer of the present utility model.The principle of current transformer 30 is foundation
Transformer principle is made.Current transformer is made up of the iron core closing and winding.Its first side winding number of turn seldom, is gone here and there
In needing the circuit of electric current of measurement, therefore it often has whole electric currents of circuit to flow through, and secondary side winding turn ratio is more,
It is serially connected in measuring instrumentss and protective loop, operationally, its secondary side circuit is closure to current transformer all the time, therefore
The impedance very little of measuring instrumentss and protective loop series coil, the working condition of current transformer is close to short circuit.Current transformer
It is that primary side high current is converted into secondary side small current to measure, secondary side can not be opened a way.
Those skilled in the art can adopt any suitable current transformer as needed.
Fig. 6 is the electrical schematics according to catalyst of the present utility model.In electrotechnics, because can fast shut-off exchange
With direct current major loop with the device that can be frequently switched on high current control circuit, so catalyst often applies to motor and does
For control object it is also possible to make to control the electrical loads such as shop equipment, electric heater, machine-tool and various kinds electric power unit, contact
Device can not only be switched on and off circuit, but also has the effect of low-voltage release guard.Catalyst control capability big it is adaptable to frequency
Numerous operation and distant control.It is one of critical elements in automatic control system.
Different working condition according to electromotor control circuit in low-tension switch cabinet and demand, contact of the present utility model
Device can be following situation：For the power of 30kW, the electric current of 56A, described first contactor is A63 type, and second contactor is
A63 type, the 3rd catalyst is A30 type；
For the power of 37kW, the electric current of 68A, described first contactor is A75 type, and second contactor is A75 type, the 3rd
Catalyst is A30 type；
For the power of 45kW, the electric current of 83A, described first contactor is A75 type, and second contactor is A75 type, the 3rd
Catalyst is A30 type；
For the power of 55kW, the electric current of 98A, described first contactor is A75 type, and second contactor is A75 type, the 3rd
Catalyst is A40 type；
For the power of 75kW, the electric current of 135A, described first contactor is A95 type, and second contactor is A95 type, the
Three catalysts are A75 type；
For the power of 90kW, the electric current of 158A, described first contactor is A110 type, and second contactor is A110 type,
3rd catalyst is A75 type；
For the power of 110kW, the electric current of 193A, described first contactor is A145 type, and second contactor is A145 type,
3rd catalyst is A95 type；
The catalyst model being given in foregoing circuit is can to directly obtain from ABB AB, and because it is excellent
Performance and preferably mate with this utility model and become preferred version.This utility model can also adopt other appropriate types
Catalyst.
Fig. 7 is the electrical schematics according to thermorelay of the present utility model.The operation principle of thermorelay is by flowing into
The electric current of thermal element produces heat, so that the bimetal leaf of the different coefficients of expansion is deformed upon, when deformation reaches certain distance,
Just promote connecting rod action, so that control circuit is disconnected, so that catalyst dead electricity, main circuit disconnects, and realizes the overload guarantor of motor
Shield., as the overload protection element of motor, with its small volume, structure is simple, low cost and other advantages obtain aborning for relay
Arrive extensive application.
In this utility model, if power is less than 30kw, and/or electric current is less than 60A, then need not adopt thermorelay.
And the different working condition according to electromotor control circuit in low-tension switch cabinet and demand, thermorelay 60 of the present utility model
It can be following situation：For the power of 30kW, the electric current of 56A, described thermorelay (60) is TA75DU42 type；
For the power of 37kW, the electric current of 68A, described thermorelay (60) is TA75DU52 type；
For the power of 45kW, the electric current of 83A, described thermorelay (60) is TA75DU63 type；
For the power of 55kW, the electric current of 98A, described thermorelay (60) is TA75DU63 type；
For the power of 75kW, the electric current of 135A, described thermorelay (60) is TA110DU90 type；
For the power of 90kW, the electric current of 158A, described thermorelay (60) is TA110DU110 type；
For the power of 110kW, the electric current of 193A, described thermorelay (60) is TA200DU135 type；
The thermorelay model being given in foregoing circuit is can to directly obtain from ABB AB, and because it is excellent
Performance and preferably mate with this utility model and become preferred version.This utility model can also adopt other suitable classes
The thermorelay of type.
The electromotor control circuit for low-tension switch cabinet that this utility model provides is applied to indoor installation low tension switch
Cabinet, can easily be updated improving；Equipment runs persistence and reliability is higher, and ensure that the person of operator
Safety.
Additionally, this utility model selects different types of device in all cases, on the one hand ensure that the safety of system,
Redundancy is high, and ensure that the compatibility of each part and concordance so that the operation of system is more steadily efficient.
It is to be appreciated that above only preferred implementation of the present utility model has been described in detail, but not
Mean that protection domain of the present utility model is limited in disclosed description.Those skilled in the art according to the description above,
The modification under without creative work, the present invention made, adds and deletes, each fall within protection scope of the present invention.
Claims (5)
1. a kind of electromotor control circuit for low-tension switch cabinet is it is characterised in that include：First plug connector (10), open circuit
Device (20), current transformer (30), catalyst group (40), thermorelay (60) and the second plug connector (50) and the 3rd plug connector
(70), wherein, described catalyst group (40) includes first end, the second end, the 3rd end and the 4th end；
Described first plug connector (10) includes the first socket, and described first socket is connected with one end of described chopper (20),
The other end of described chopper (20) is connected with one end of described current transformer (30)；
The other end of described current transformer (30) is connected with the first end of described catalyst group (40)；
Second end of described catalyst group (40) is fixed connection；
3rd end of described catalyst group (40) is connected with one end of described thermorelay (60)；
Described second plug connector (50) includes the second socket, and described second socket is connected with the other end of described thermorelay (60)
Connect；
Described 3rd plug connector (70) includes the 3rd socket, and described 3rd socket is connected with the 4th end of described catalyst group (40)
Connect.
2. the electromotor control circuit for low-tension switch cabinet according to claim 1 is it is characterised in that described catalyst
Group (40) includes first contactor, second contactor and the 3rd catalyst, wherein, one end of described first contactor and described the
One end of two catalysts is connected with the other end of described current transformer (30), and one end of described 3rd catalyst is fixed company
Connect, the other end of described first contactor is connected with the one end of described thermorelay (60), the other end of described second contactor
It is connected with described 3rd plug connector (70) with the other end of described 3rd catalyst.
3. the electromotor control circuit for low-tension switch cabinet according to claim 1 it is characterised in that
For the power of 30kW, the electric current of 56A, described thermorelay (60) is TA75DU42 type；
For the power of 37kW, the electric current of 68A, described thermorelay (60) is TA75DU52 type；
For the power of 45kW, the electric current of 83A, described thermorelay (60) is TA75DU63 type；
For the power of 55kW, the electric current of 98A, described thermorelay (60) is TA75DU63 type；
For the power of 75kW, the electric current of 135A, described thermorelay (60) is TA110DU90 type；
For the power of 90kW, the electric current of 158A, described thermorelay (60) is TA110DU110 type；
For the power of 110kW, the electric current of 193A, described thermorelay (60) is TA200DU135 type.
4. the electromotor control circuit for low-tension switch cabinet according to claim 2 it is characterised in that
For the power of 30kW, the electric current of 56A, described first contactor is A63 type, and second contactor is A63 type, the 3rd contact
Device is A30 type；
For the power of 37kW, the electric current of 68A, described first contactor is A75 type, and second contactor is A75 type, the 3rd contact
Device is A30 type；
For the power of 45kW, the electric current of 83A, described first contactor (41) is A75 type, and second contactor is A75 type, the 3rd
Catalyst is A30 type；
For the power of 55kW, the electric current of 98A, described first contactor is A75 type, and second contactor is A75 type, the 3rd contact
Device is A40 type；
For the power of 75kW, the electric current of 135A, described first contactor is A95 type, and second contactor is A95 type, and the 3rd connects
Tentaculum is A75 type；
For the power of 90kW, the electric current of 158A, described first contactor is A110 type, and second contactor is A110 type, the 3rd
Catalyst is A75 type；
For the power of 110kW, the electric current of 193A, described first contactor is A145 type, and second contactor is A145 type, the 3rd
Catalyst is A95 type.
5. the electromotor control circuit for low-tension switch cabinet according to claim 1 it is characterised in that
For the power of 30kW, the electric current of 56A, described chopper (20) is S2X80R63 type；
For the power of 37kW, the electric current of 68A, described chopper (20) is S2X80R80 type；
For the power of 45kW, the electric current of 83A, described chopper (20) is S3H160RM125 type；
For the power of 55kW, the electric current of 98A, described chopper (20) is S3H160RM160 type；
For the power of 75kW, the electric current of 135A, described chopper (20) is S3H250RM250 type；
For the power of 90kW, the electric current of 158A, described chopper (20) is S3H250RM250 type；
For the power of 110kW, the electric current of 193A, described chopper (20) is S5H400R250 type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620919655.3U CN205985760U (en) | 2016-08-22 | 2016-08-22 | A motor control circuit for low -voltage switchgear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620919655.3U CN205985760U (en) | 2016-08-22 | 2016-08-22 | A motor control circuit for low -voltage switchgear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205985760U true CN205985760U (en) | 2017-02-22 |
Family
ID=58033404
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620919655.3U Expired - Fee Related CN205985760U (en) | 2016-08-22 | 2016-08-22 | A motor control circuit for low -voltage switchgear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205985760U (en) |
-
2016
- 2016-08-22 CN CN201620919655.3U patent/CN205985760U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170222 |