CN208001151U - A kind of motor is for electric installation - Google Patents
A kind of motor is for electric installation Download PDFInfo
- Publication number
- CN208001151U CN208001151U CN201820429909.2U CN201820429909U CN208001151U CN 208001151 U CN208001151 U CN 208001151U CN 201820429909 U CN201820429909 U CN 201820429909U CN 208001151 U CN208001151 U CN 208001151U
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- China
- Prior art keywords
- motor
- control
- power switch
- controlling brancher
- switch
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Abstract
The utility model is related to a kind of motors for electric installation, include being provided with motor protecter and overload protection action module in the motor protecter supply line for the motor protecter supply line for being electrically connected motor.Overload protection action module is also set up in motor protecter supply line; when motor protecter supply line overload reaches to a certain degree; overload protection action module acts; disconnect the motor protecter supply line; overload protective function is played to circuit; when overload situations are more serious, avoid causing motor protecter supply line, the relevant device in the supply line, such as motor protecter and motor damage.
Description
Technical field
The utility model is related to a kind of motors for electric installation.
Background technology
The control of low-tension motor is widely used in low-voltage distribution system, the Starting mode of motor in the case of difference
Also it is not quite similar.When only selecting wherein frequency converter drive motor running:It is carried although being impacted caused by when can reduce electric motor starting
Lotus controls motor speed, is elongated the time is started, and electric current is become gentle, achievees the purpose that soft start, while can also lead to raising electricity
The efficiency of net and motor.But occur to make frequency converter bounce frequent in the case of overload, and frequency converter overload capacity itself
It is poor that it is easy to appear overload-alarms;Motor protector can meet motor when driving motor running and normally start, just
A variety of startups requirements such as reversion startup, and circuit and wiring can be simplified, there is higher cost performance, but starting current compares
Greatly, larger impact is caused to motor.
A kind of motor variable-frequency speed-regulating control dress is disclosed in the Chinese patent document that Authorization Notice No. is CN201860293U
It sets, includes the main circuit and control circuit of motor, wherein the main circuit of motor is made of two power supply branches being arranged in parallel,
First power supply branch road string is equipped with contactor and frequency converter, and Article 2 power supply branch road string is equipped with contactor and electric motor protecting
Device, the contactor by controlling this two power supply branch roads switch, and realize frequency converter or motor protecter drive motor fortune
Row.Circuit for controlling motor includes two controlling branchers, is gone here and there on first controlling brancher and is equipped with the place power supply of driving frequency converter
The control coil of road contactor, power supply branch road contactor where string is equipped with driving motor protector on Article 2 controlling brancher
Control coil, pass through and be closed the input that corresponding controlling brancher realizes frequency converter or motor protecter.
Although said program improves, control mode starting current that frequency converter or motor protecter are individually powered is big, mistake
The problem of carrying alarm.But, it is generally the case that in order to avoid making frequency converter bounce frequent in the event of overloading, need in mistake
It is run using motor protecter driving motor in the case of load, still, supply current is generally also bigger in the case of an overload, and
And motor protecter inherently has the characteristics that starting current is bigger, therefore, general overload is allowed, and still, has served as
When load situation is more serious, supply line where motor protecter will be easy to cause and the correlation in the supply line
Equipment, such as motor protecter damage, What is more, may be damaged motor.
Utility model content
The purpose of this utility model is to provide a kind of motor for electric installation, to solve electricity where existing motor protecter
When machine supply line overlond running, the problem of being likely to result in supply line and motor damage.
To achieve the above object, the utility model includes following technical scheme.
A kind of motor includes for the motor protecter supply line for being electrically connected motor, the motor is protected for electric installation
Motor protecter and overload protection action module are provided in Hu Qi supply lines.
Overload protection action module is also set up in motor protecter supply line, when the motor protecter supply line overloads
When reaching to a certain degree, the action of overload protection action module disconnects the motor protecter supply line, plays overload to circuit and protects
Shield acts on, and therefore, when overload situations are more serious, can result in motor protecter supply line, in the supply line
Relevant device, such as motor protecter and motor damage.
Further, in order to realize the action message of overload protection, the overload protection action module is the first hot relay
Device.
Further, described to further include for electric installation in order to realize the selectively power of motor protecter and frequency converter
In the inverter supply circuit for being electrically connected motor, the inverter supply circuit is in parallel with the motor protecter supply line
It connects, frequency converter is provided on the inverter supply circuit.
Further, motor is powered to control motor protecter by controlling brancher in order to realize, the motor
It is provided with power switch in protector supply line, described for electric installation further includes controlling brancher, and string is set on the controlling brancher
There is the control coil of control switch and the power switch.
Further, motor is selected to control motor protecter or frequency converter by controlling brancher in order to realize
Property power supply, be respectively arranged with the first power switch and second on the inverter supply circuit and at the both ends of the frequency converter
Power switch is provided with third power switch in the motor protecter supply line;Described for electric installation further includes the first control
Branch processed and the second controlling brancher, string is equipped with the first control switch and first power switch on first controlling brancher
The connection structure that the control coil of control coil and second power switch is constituted, string is equipped with the on second controlling brancher
The control coil of two control switches and the third power switch.
Further, it in order to realize overload protection, is also gone here and there on second controlling brancher and is equipped with the second electrothermal relay.
Further, in order to realize the independent control of the first controlling brancher and the second controlling brancher, described first for establishing by cable
The control coil of the control coil of pass and the second power switch is arranged in parallel, and the control coil of first power switch is also with one
Intermediate relay controlling brancher is connected in parallel, control line of the string equipped with intermediate relay on the intermediate relay controlling brancher
Circle, the corresponding contact of intermediate relay and the first control switch in parallel setting, the first control switch is first
Start button, corresponding first contact of control coil of the third power switch control switch in parallel setting with described second,
The second control switch is the second start button.
Further, in order to realize the electrical interlocks of the first controlling brancher and the second controlling brancher, described first controls branch
Road also string is equipped with corresponding second contact of control coil of the third power switch, and also string is set on second controlling brancher
There is the control coil of corresponding first contact of the control coil of first power switch and second power switch corresponding
First contact.
Further, in order to the control coil of the control coil of the first power switch or the second power switch obtain it is electric it
Intermediate relay can be put into afterwards, ensured frequency converter reliable power supply, also gone here and there on the intermediate relay controlling brancher and be equipped with institute
The control coil corresponding of corresponding second contact of control coil or second power switch of stating the first power switch
Two contacts.
Further, in order to realize the independent break-make control of the first controlling brancher and the second controlling brancher, described first controls
Branch road processed also string is equipped with the first total control switch, and also string is equipped with the second total control switch on second controlling brancher.
Description of the drawings
Fig. 1 is motor main circuit figure;
Fig. 2 is circuit for controlling motor figure.
Specific implementation mode
The present embodiment provides a kind of motors for electric installation, and for being powered for motor, this includes an electricity for electric installation
Machine protector supply line is provided with motor protecter and overload protection action module in the motor protecter supply line, electricity
Machine protector is run for driving motor, overload protection action module for it is online pass by be downloaded to up to a certain degree when, overload is protected
Action module action is protected, overload protective function is played to circuit.Wherein, overload protection action module is specifically with electrothermal relay
Example.
Motor can be only powered by motor protecter, then, motor includes only that motor protecter supplies for electric installation
Electric line is correspondingly provided with power switch in motor protecter supply line, further includes controlling brancher for electric installation, control
Branch road processed string is equipped with the control coil of control switch and power switch.It is closed control switch, the control coil of power switch obtains
Electricity, power switch are closed, and the conducting of motor protecter supply line is powered for motor.Furthermore it is also possible to by artificially directly controlling
Mode realize the selection between motor protecter, then, just it is not necessary that control section is arranged, that is, be not necessarily to that controlling brancher is arranged.
Certainly, motor can also be by frequency converter and motor protecter selectively power.When selection frequency converter drives motor fortune
When row, shock loading caused by when can reduce electric motor starting controls motor speed, is elongated the time is started, and electric current is become gently,
Achieve the purpose that soft start, while the efficiency for improving power grid and motor can also be led to, but occurs that in the case of overload change can be made
The bounce of frequency device is frequent, and frequency converter overload capacity itself is poor that it is easy to appear overload-alarms.And motor protector drives electricity
Machine can meet a variety of startup requirements such as motor normally starts, positive and negative rotation starts when running, and can simplify circuit and wiring, have
There is higher cost performance, but starting current is bigger, and larger impact is caused to motor.Therefore, frequency converter and electricity are utilized
Machine protector selectively power, carries out power supply appropriate under appropriate conditions, can promote power supply reliability.
In the present embodiment, motor is by frequency converter and motor protecter selectively power.So, in addition to motor protecter is powered
Further include inverter supply circuit except circuit, which is connected in parallel with motor protecter supply line, such as
Shown in Fig. 1, string is equipped with motor protecter MB, contactor C and electrothermal relay RJ in motor protecter supply line, further also goes here and there
If breaker of plastic casing 2QF;String is equipped with frequency converter, contactor KM1 and contactor KM2 on inverter supply circuit, further also goes here and there
If breaker of plastic casing 1QF.
As shown in Figure 1, contactor C is disconnected in the case of frequency conversion, contactor KM1 and KM2 are closed, and are driven using frequency converter
Motor M operations;Contactor KM1 and KM2 are disconnected in the case of frequent starting motor M and overload, and contactor C is closed, and uses electricity
Motivation protector MB drives motor M operations.Different motor M control modes are used by this different situations, avoid startup
Electric current is excessive, power grid and the problem of motor efficiency, reduces unnecessary economic loss and influence.
Correspondingly, further include the first controlling brancher and the second controlling brancher for electric installation, the first controlling brancher corresponds to frequency conversion
Device supply line, the second controlling brancher correspond to motor protecter supply line.In order to realize contactor KM1's and contactor KM2
Switch controls, and string is equipped with the control of the first control switch and the control coil and contactor KM2 of contactor KM1 on the first controlling brancher
The connection structure that coil processed is constituted;In order to realize the switch control of contactor C, goes here and there on the second controlling brancher and opened equipped with the second control
Close the control coil with contactor C.Based on the basic circuit structure of above-mentioned first controlling brancher and the second controlling brancher, Fig. 2 gives
Go out a kind of concrete implementation circuit of the first controlling brancher and the second controlling brancher, certainly, the utility model is not limited to Fig. 2
Shown in physical circuit, can also be existing relevant control circuit, such as the China that Authorization Notice No. is CN201860293U
Relevant control circuit structure disclosed in patent document.
As shown in Fig. 2, L, N busbar voltage, also string is equipped with electrothermal relay RJ on the second controlling brancher.Moreover, contactor KM1
Control coil, contactor KM2 control coil and an intermediate relay controlling brancher be arranged in parallel, intermediate relay control
Control coil of the branch road string equipped with intermediate relay 1ZJ, the first control switch is specially start button HA, intermediate relay
The contact (being specially normally opened contact) of 1ZJ is arranged in parallel with control button HA.Second control switch is specially start button HA ',
Corresponding first contact of control coil (being specially normally opened contact) of contactor C is arranged in parallel with start button HA.Certainly, Fig. 1
Contactor C, contactor KM1 and contactor KM2 in middle main circuit are also the corresponding contact of corresponding control coil, such as:Main electricity
The corresponding contact of control coil that contactor C in road is contactor C in Fig. 2.
In order to realize electrical interlocks, the control coil corresponding second also gone here and there equipped with contactor C on the first controlling brancher touches
Point (be specially normally-closed contact), also control coil corresponding first contact (tool of the string equipped with contactor KM1 on the second controlling brancher
Body is normally-closed contact) and contactor KM2 corresponding first contact of control coil (be specially normally-closed contact).Moreover, it is intermediate after
Electrical equipment control branch road also string is equipped with corresponding second contact of control coil (being specially normally opened contact) of contactor KM1 or connects
Corresponding second contact of control coil (be specially normally opened contact) of tentaculum KM2, only when the control coil of contactor KM1 or
When the control coil of contactor KM2 obtains electric, corresponding normally opened contact is just closed, the control coil of intermediate relay 1ZJ just it is electric,
First controlling brancher is just connected.In the present embodiment, what string was set is the control coil of contactor KM1 on intermediate relay controlling brancher
Corresponding normally opened contact.
In addition, in order to realize that the overall break-make of the first controlling brancher and the second controlling brancher controls, on the first controlling brancher
Also string is equipped with the first total control switch, and specially button TA, also string is equipped with the second total control switch on the second controlling brancher, specifically
For button TA '.
When pressing start button HA, the control coil of contactor KM1 and contactor KM2 obtains electric, and contactor KM1 is normally opened to be touched
Point is closed, and the control coil of intermediate relay 1ZJ obtains electric, and the normally opened contact of intermediate relay 1ZJ is closed, and forms self-locking circuit,
Also, the contactor KM1 and contactor KM2 in main circuit are closed, and frequency converter drives motor M operations;When by lower button TA, the
One controlling brancher powers off, and the contactor KM1 and contactor KM2 in main circuit are disconnected, and frequency converter terminates to power for motor M.When
When pressing start button HA ', the control coil of contactor C obtains electric, and contactor C normally opened contacts are closed, and form self-locking circuit, and
And the contactor C in main circuit is closed, motor protecter drives motor M operations;When by lower button TA ', the second controlling brancher
It powers off, the contactor C in main circuit is disconnected, and motor protecter terminates to power for motor M.
Furthermore it is also possible to the selection between frequency converter and motor protecter is realized by way of artificially directly controlling, that
, just it is not necessary that control section is arranged, that is, it is not necessarily to that the first controlling brancher and the second controlling brancher is arranged.
The utility model drives motor or motor protector to drive this situation of motor operation for single frequency converter, real
The method that adaptable control motor is taken in the case of existing difference.This circuit design is simple, practical, reasonable, the scope of application
Extensively, meet safe operation, reliable, practical, cost-effective.
Specific embodiment is presented above, but the utility model is not limited to described embodiment.This practicality
Novel basic ideas are above-mentioned basic scheme, for those of ordinary skill in the art, introduction according to the present utility model,
The model, formula, parameter for designing various modifications do not need to spend creative work.The principles of the present invention are not being departed from
The scope of protection of the utility model is still fallen with the change, modification, replacement and modification carried out to embodiment in the case of spirit
It is interior.
Claims (10)
1. a kind of motor for electric installation, includes for the motor protecter supply line for being electrically connected motor, the electric motor protecting
It is provided with motor protecter in device supply line, which is characterized in that be additionally provided with overload in the motor protecter supply line
Protection act module.
2. motor according to claim 1 is for electric installation, which is characterized in that the overload protection action module is the first heat
Relay.
3. motor according to claim 1 or 2 is for electric installation, which is characterized in that described for electric installation further includes for supplying
It is electrically connected the inverter supply circuit of motor, the inverter supply circuit is in parallel with the motor protecter supply line to be connected
It connects, frequency converter is provided on the inverter supply circuit.
4. motor according to claim 1 or 2 is for electric installation, which is characterized in that in the motor protecter supply line
It is provided with power switch, described for electric installation further includes controlling brancher, and string is equipped with control switch and described on the controlling brancher
The control coil of power switch.
5. motor according to claim 3 is for electric installation, which is characterized in that on the inverter supply circuit and in institute
The both ends for stating frequency converter are respectively arranged with the first power switch and the second power switch, are set in the motor protecter supply line
It is equipped with third power switch;Described for electric installation further includes the first controlling brancher and the second controlling brancher, the first control branch
Road string is equipped with the control line of the control coil and second power switch of the first control switch and first power switch
The connection structure constituted is enclosed, string is equipped with the second control for controlling switch and the third power switch on second controlling brancher
Coil.
6. motor according to claim 5 is for electric installation, which is characterized in that also string is equipped with the on second controlling brancher
Two electrothermal relays.
7. motor according to claim 5 or 6 is for electric installation, which is characterized in that the control line of first power switch
Circle and the control coil of the second power switch are arranged in parallel, the control coil of first power switch also with an intermediate relay
Device controlling brancher is connected in parallel, control coil of the string equipped with intermediate relay on the intermediate relay controlling brancher, in described
Between the corresponding contact of relay with it is described first control switch in parallel setting, it is described first control switch be the first start button,
Corresponding first contact of control coil of the third power switch controls switch in parallel setting, second control with described second
System switch is the second start button.
8. motor according to claim 7 is for electric installation, which is characterized in that also string is equipped with institute on first controlling brancher
Corresponding second contact of control coil of third power switch is stated, also string is equipped with first power supply on second controlling brancher
Corresponding first contact of control coil of switch and corresponding first contact of control coil of second power switch.
9. motor according to claim 8 is for electric installation, which is characterized in that also gone here and there on the intermediate relay controlling brancher
The control coil pair of corresponding second contact of control coil or second power switch equipped with first power switch
The second contact answered.
10. the motor according to claim 5 or 6 or 8 or 9 is for electric installation, which is characterized in that on first controlling brancher
Also string is equipped with the first total control switch, and also string is equipped with the second total control switch on second controlling brancher.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820429909.2U CN208001151U (en) | 2018-03-28 | 2018-03-28 | A kind of motor is for electric installation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820429909.2U CN208001151U (en) | 2018-03-28 | 2018-03-28 | A kind of motor is for electric installation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208001151U true CN208001151U (en) | 2018-10-23 |
Family
ID=63840231
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820429909.2U Expired - Fee Related CN208001151U (en) | 2018-03-28 | 2018-03-28 | A kind of motor is for electric installation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208001151U (en) |
-
2018
- 2018-03-28 CN CN201820429909.2U patent/CN208001151U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181023 |