CN202474823U - Integrated protection device for electromotor - Google Patents
Integrated protection device for electromotor Download PDFInfo
- Publication number
- CN202474823U CN202474823U CN2012200999337U CN201220099933U CN202474823U CN 202474823 U CN202474823 U CN 202474823U CN 2012200999337 U CN2012200999337 U CN 2012200999337U CN 201220099933 U CN201220099933 U CN 201220099933U CN 202474823 U CN202474823 U CN 202474823U
- Authority
- CN
- China
- Prior art keywords
- electromotor
- motor
- integrated
- protector
- protection device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 230000001012 protector Effects 0.000 claims abstract description 31
- 238000009434 installation Methods 0.000 abstract description 2
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 230000002159 abnormal effect Effects 0.000 description 2
- 230000003111 delayed effect Effects 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
Images
Landscapes
- Protection Of Generators And Motors (AREA)
- Motor And Converter Starters (AREA)
Abstract
The utility model relates to an integrated protection device for an electromotor. The integrated protection device for an electromotor is composed of an electromotor, an alternating current contactor and an integrated electromotor protector, wherein a normally closed contact of the electromotor integrated protector and a start-stop switch of the electromotor are connected in series in a power supply loop of an alternating current contactor coil, a normally open contact KM of the alternating current contactor is connected in series in the power supply loop of the electromotor, and the integrated protection device for the electromotor is also provided with a delay relay; and a normally open contact of the delay relay is connected in series in a working current input circuit of the integrated electromotor protector. The device adopts the delay relay to avoid the maximal instant starting current of the electromotor according to the large starting instantaneous current of the electromotor, and the integrated electromotor protector can be put into operation after the electromotor is in normal operation. The integrated protection device for the electromotor provided by the utility model has the characteristics that the installation and wiring are simple and convenient, and the service life of the electromotor integrated protector is prolonged.
Description
Technical field
The utility model relates to motor start and stop control device, particularly has the motor starting control device of overload and delayed firing protection kinetic energy concurrently.
Background technology
Motor is furnished with A.C. contactor and integrated protector for electric motor (matured product) to form the motor starting protective device.But because motor such as threephase asynchronous be when starting, rotating speed is 4～7 times of rated current by accelerating to 1500～3000 rev/mins of starting currents, can cause the fluctuation of line voltage, influences other load of same power supply.And often exist motor to be in the situation of Fraquent start, influence very big line voltage.
The utility model content
The purpose of the utility model provides a kind ofly can be avoided motor maximum instantaneous starting current and make the motor comprehensive protection device of motor comprehensive protection delayed firing.
The purpose of the utility model is achieved in that a kind of motor comprehensive protection device; Comprise motor; A.C. contactor and integrated protector for electric motor: the normally closed interlock of integrated protector for electric motor and motor on-off switch all are serially connected in the current supply circuit of ac contactor coil; The normally open contact KM of A.C. contactor is serially connected in the current supply circuit of motor, also has time-delay relay; The normally open contact of time-delay relay is serially connected in the operating current input circuit of said integrated protector for electric motor.
Above-mentioned integrated protector for electric motor model is the JD-6 type.
Compared with prior art, the beneficial effect of the utility model is:
1, this device is big according to the motor starting immediate current; Increased an energization delay relay; Can be set an on-delay time artificially according to different motor start-up situation; Behind the maximum instantaneous starting current that escapes motor, comprehensive protection device just puts into operation after motor runs well, and realizes all defencive functions of former integrated protector for electric motor.
2, can be various integrated protector for electric motor and carry out upgrading.
3, this protective device is integrated in one, and installation connection is simple, convenient, is convenient to promote, and can effectively prolong the life-span of integrated protector for electric motor.This WN-motor comprehensive protection device can should be applicable to widely all kinds separate unit motor startup, stop, rotating control.Behind motor starting; The time-delay of protection power supply input time delay relay power drops into integrated protector for electric motor again with the moment maximum starting current that escapes motor; After the normal operation of motor, when abnormal conditions such as motor generation overcurrent, overvoltage, under-voltage, phase shortage, stall, integrated protector for electric motor output protection signal also sends trip command; Connect the motor switch contactor coil, motor is protected shutdown after the automatic disconnection working power.Avoid motor under failure condition, to continue to damage, protected better equipment.WN-motor comprehensive protection device does not change original defencive function, is convenient to promote.
Description of drawings
Fig. 1 is the motor wiring sketch map.
Fig. 2 is the structured flowchart of this device.
Embodiment
Fig. 1, Fig. 2 illustrate; This novel motor that comprises; A.C. contactor and integrated protector for electric motor: the normally closed interlock of integrated protector for electric motor and motor on-off switch all are serially connected in the current supply circuit of ac contactor coil; The normally open contact KM of A.C. contactor is serially connected in the current supply circuit of motor, also has time-delay relay; The normally open contact of time-delay relay is serially connected in the operating current input circuit of said integrated protector for electric motor.
Among Fig. 1, the normally open contact KM of A.C. contactor (i.e. three pairs of main contacts) is connected with ac three-phase asynchronous motor respectively.A.C. contactor adopts among existing connected mode Fig. 1 with integrated protector for electric motor and being connected of motor and is merely sketch map.For example, if consider motor positive and inverse, then need 2 A.C. contactors to connect by existing certain way.The integrated protector for electric motor model is the JD-6 type.QF is an air switch among Fig. 1.
The utility model WN-integrated protector for electric motor principle: behind motor start-up; Protection power supply access delay relay (is provided with one artificially and starts delay time; According to motor capacity, size, type difference; Generally in 5 seconds, be advisable, special purposes motor can be adjusted start-up time as required, and the adjustment position is arranged on the convenient position of transferring of shell).Escaped the maximum starting current of motor behind the on-delay; Normally move back protection power supply input motor comprehensive protection device at motor; When abnormal conditions such as overcurrent, overvoltage, under-voltage, phase shortage, stall took place in running when motor, integrated protector for electric motor output protection signal also sent the instruction trip command, connects ac contactor coil; The normally open contact KM of A.C. contactor (being main contact) automatic disconnection motor working power and shutting down avoids motor to continue infringement.This protector does not change original defencive function (should change when inconsistent with this protector original tripping operation output signal); Each integrated protector for electric motor producer can both increase an energization delay relay (can select the energization delay relay of different model when producer transforms as required) according to existing protector; Existing product is transformed; With the maximum starting current that escapes motor is purpose, and the function that had both kept is widened other function of integrated protector for electric motor again.
Claims (2)
1. motor comprehensive protection device; Comprise; Motor, A.C. contactor and integrated protector for electric motor: the normally closed interlock of integrated protector for electric motor and motor on-off switch all are serially connected in the current supply circuit of ac contactor coil, and the normally open contact KM of A.C. contactor is serially connected in the current supply circuit of motor; It is characterized in that also having time-delay relay; The normally open contact of time-delay relay is serially connected in the operating current input circuit of said integrated protector for electric motor.
2. motor comprehensive protection device according to claim 1 is characterized in that, said integrated protector for electric motor model is the JD-6 type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200999337U CN202474823U (en) | 2012-03-16 | 2012-03-16 | Integrated protection device for electromotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200999337U CN202474823U (en) | 2012-03-16 | 2012-03-16 | Integrated protection device for electromotor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202474823U true CN202474823U (en) | 2012-10-03 |
Family
ID=46922951
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200999337U Expired - Lifetime CN202474823U (en) | 2012-03-16 | 2012-03-16 | Integrated protection device for electromotor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202474823U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103353771A (en) * | 2013-06-19 | 2013-10-16 | 国家电网公司 | Automatic pumping integration protection circuit and apparatus thereof |
| CN103997020A (en) * | 2014-06-12 | 2014-08-20 | 株洲南车时代电气股份有限公司 | Protector for three-phase motor of alternating-current or direct-current electric locomotive |
| CN111168282A (en) * | 2020-02-24 | 2020-05-19 | 佛山闽雄机电科技有限公司 | A circuit for selective output of a magnetic welding gun power supply chassis |
-
2012
- 2012-03-16 CN CN2012200999337U patent/CN202474823U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103353771A (en) * | 2013-06-19 | 2013-10-16 | 国家电网公司 | Automatic pumping integration protection circuit and apparatus thereof |
| CN103353771B (en) * | 2013-06-19 | 2016-12-28 | 国家电网公司 | Automatic pumping general protective circuit and device thereof |
| CN103997020A (en) * | 2014-06-12 | 2014-08-20 | 株洲南车时代电气股份有限公司 | Protector for three-phase motor of alternating-current or direct-current electric locomotive |
| CN111168282A (en) * | 2020-02-24 | 2020-05-19 | 佛山闽雄机电科技有限公司 | A circuit for selective output of a magnetic welding gun power supply chassis |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101936258B (en) | A wind power plant predictive protection circuit | |
| CN202474823U (en) | Integrated protection device for electromotor | |
| CN201733267U (en) | Power reset self-starting device for asynchronous motor | |
| CN212627740U (en) | Control circuit of fluidization fan | |
| CN204992611U (en) | Photovoltaic contravariant single phase alternating current and box with a net | |
| CN208089414U (en) | A kind of gas turbine group static state starter feedback signal circuit | |
| CN102684158A (en) | Overheat delay protection device for motor | |
| CN203645309U (en) | Three-phase motor overcurrent protection device | |
| CN208548846U (en) | A kind of low frequency sub-gate circuit | |
| CN203014354U (en) | Circuit for controlling auxiliary device of large units | |
| CN201898321U (en) | Cooling control circuit of variable frequency motor | |
| CN208257694U (en) | A kind of electric motor starting control device | |
| CN201937520U (en) | Soft starting system of cooling water pump | |
| CN202678938U (en) | Motor overload protection circuit for motor-driven oil well pump | |
| CN202889265U (en) | Soft starter control system driving three-phase squirrel cage asynchronous motor to operate | |
| CN214590611U (en) | A system for reducing no-load loss of power plant startup and standby | |
| CN202475327U (en) | Automatic alarm control device of motor | |
| CN105071439B (en) | Photovoltaic inversion single phase ac grid connection box | |
| CN201797472U (en) | Soft-start control system of building hoist | |
| CN101976992A (en) | Soft start control system of construction lifter | |
| CN204706867U (en) | A kind of protection system of mine-used frequency-converter | |
| CN201797299U (en) | Reverse-power relay | |
| CN102790571B (en) | Brushless excitation system of wind turbine and switching method of primary excitation system and secondary excitation system | |
| CN204516686U (en) | A kind of low voltage control system Anti-electricity dazzling device | |
| CN201733266U (en) | One-step self-starting device for power restoration of asynchronous motor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: STATE ELECTRIC NET CROP. Effective date: 20131227 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20131227 Address after: 635000 No. 816 Chaoyang East Road, Sichuan, Dazhou Patentee after: Sichuan Electric Power Co.,Ltd. Dazhou Electric Power Bureau Patentee after: State Grid Corporation of China Address before: 635000 No. 816 Chaoyang East Road, Sichuan, Dazhou Patentee before: Sichuan Electric Power Co.,Ltd. Dazhou Electric Power Bureau |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121003 |