CN203071851U - Starting cabinet for variable-frequency drive - Google Patents
Starting cabinet for variable-frequency drive Download PDFInfo
- Publication number
- CN203071851U CN203071851U CN 201320038821 CN201320038821U CN203071851U CN 203071851 U CN203071851 U CN 203071851U CN 201320038821 CN201320038821 CN 201320038821 CN 201320038821 U CN201320038821 U CN 201320038821U CN 203071851 U CN203071851 U CN 203071851U
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- Prior art keywords
- variable
- frequency drive
- frequency converter
- starting
- time delay
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- Expired - Fee Related
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Abstract
As the conventional a variable-frequency drive starting cabinet used for a motor can damage the variable-frequency drive easily and the service life of the variable-frequency drive is short, the utility model provides a starting cabinet for a variable-frequency drive. The starting cabinet for the variable-frequency drive comprises a major circuit and a control circuit. The major circuit comprises a breaker connected with an input end, an alternating current contactor connected with the breaker, and a variable-frequency drive body connected with the alternating current contactor. The control circuit comprises a first button and a first time delay relay, wherein the first button is arranged on a cabinet door plate and enables the alternating current contactor to be absorbed after receiving electricity, the first time delay relay is connected with a first intermediate relay, and the first intermediate relay is connected with the variable-frequency drive body. A starting mode provided by the starting cabinet for the variable-frequency drive greatly improves the starting of the variable-frequency drive, the variable-frequency drive is not easy to damage, the service life of the variable-frequency drive is prolonged, time delay of the first time delay relay can control that the variable-frequency drive is started after the alternating current contactor is stable in contact, and a second time delay relay stops the variable-frequency drive firstly and then disconnects the alternating current contactor of the major circuit by stopping time delay.
Description
Technical field
The utility model relates to frequency converter start-up technique field, specifically, relates to a kind of frequency converter starting cabinet.
Background technology
(Variable-frequency Drive is to use converter technique and microelectric technique VFD) to frequency converter, controls the electric control appliance of alternating current motor by changing machine operation supply frequency mode.Frequency converter mainly is made up of rectification (AC-DC), filtering, inversion (direct current becomes interchange), brake unit, driver element, detecting unit microprocessing unit etc.Voltage and the frequency of cut-offfing to adjust out-put supply of inner IGBT of frequency converter; actual needs according to motor provides its needed supply voltage, and then reaches purpose energy-conservation, speed governing, in addition; frequency converter also has a lot of defencive functions, as overcurrent, overvoltage, overload protection etc.Along with improving constantly of industrial automatization, frequency converter has also obtained using very widely.
The existing frequency converter starting cabinet that is used for motor, be that input connects a circuit breaker earlier at major loop, for can be when the system failure, effectively excise the input power supply of frequency converter, can connect the break-make of an A.C. contactor control main circuit power in the lower end again, to guarantee safety, connect the frequency converter starting motor at last.
Generally be to make the A.C. contactor on the major loop get electric first adhesive by the knob on the cabinet door-plate earlier in control loop, clicking a knob then again, that auxiliary relay is got is electric, becomes the starting point that normally closed point receives on the frequency converter by auxiliary relay Chang Kaide electricity and makes the frequency converter starting drive electric motor starting.Make frequency converter stop just to click crawl and stop the interlock knob frequency converter has been stopped, making frequency converter obtain fault simultaneously and resetted.Such start mode damages frequency converter easily, and the frequency converter life-span is lower.
The utility model content
The utility model damages frequency converter easily at the existing frequency converter starting cabinet that is used for motor, and the defective that the frequency converter life-span is lower provides a kind of frequency converter starting cabinet.
The technical problem of the required solution of the utility model can be achieved through the following technical solutions:
A kind of frequency converter starting cabinet, comprise major loop and control loop, described major loop comprises the circuit breaker that is connected with input, the A.C. contactor that is connected with circuit breaker and the transducer body that is connected with A.C. contactor, described control loop comprises being arranged on makes A.C. contactor get first button of electric adhesive on the cabinet door-plate, it is characterized in that: described control loop also comprises first time-delay relay, first time-delay relay connects first auxiliary relay, and first auxiliary relay connects transducer body.
In the utility model, described control loop also comprises being arranged on makes second auxiliary relay get second button of electric adhesive on the cabinet door-plate, and second auxiliary relay connects second time-delay relay.
Frequency converter starting cabinet of the present utility model, starting has greatly improved its start mode to frequency converter, be not easy to damage frequency converter, can prolong the frequency converter life-span, the time-delay of first time-delay relay could be started frequency converter after can controlling the A.C. contactor contact stabilization, after the time-delay of second time-delay relay stops earlier frequency converter to be stopped the A.C. contactor of major loop is disconnected.
Description of drawings
Further specify the utility model below in conjunction with the drawings and specific embodiments.
Fig. 1 is the structural representation of major loop of the present utility model.
Fig. 2 is the structural representation of control loop of the present utility model.
Embodiment
In order to make technological means of the present utility model, creation characteristic, to reach purpose and effect is easy to understand, below in conjunction with concrete diagram, further set forth the utility model.
Purport of the present utility model is, by to the existing analysis that is used for the frequency converter starting cabinet operation principle of motor, find that there is the easy frequency converter that damages in the existing frequency converter starting cabinet that is used for motor, the defective that the frequency converter life-span is lower provides a kind of frequency converter starting cabinet that addresses the above problem by the utility model.
Referring to Fig. 1 and Fig. 2, frequency converter starting cabinet of the present utility model, comprise major loop and control loop, major loop comprises the circuit breaker 1QF that is connected with input, the A.C. contactor 1KM that is connected with circuit breaker 1QF and the transducer body VF that is connected with A.C. contactor 1KM, control loop comprises being arranged on makes A.C. contactor 1KM get the first button 1SB of electric adhesive on the cabinet door-plate, and the first time-delay relay KT1, the first time-delay relay KT1 connects the first auxiliary relay KA1, and the first auxiliary relay KA1 connects transducer body VF.
In the utility model, control loop also comprises being arranged on makes the second auxiliary relay KA2 get the second button 1SS of electric adhesive on the cabinet door-plate, and the second auxiliary relay KA2 connects the second time-delay relay KT2.
The utility model major control improves on the loop, is the effect that reaches transducer body VF starting, stops by the first time-delay relay KT1 and the second time-delay relay KT2.Starting has greatly improved such start mode to transducer body VF, is not easy to damage transducer body VF, can prolong the life-span of transducer body VF.The main purpose of first time-delay relay KT1 time-delay is could start transducer body VF after can controlling A.C. contactor 1KM contact stabilization, and the purpose that second time-delay relay KT2 time-delay stops is that the A.C. contactor 1KM of major loop is disconnected.
Below only be described with regard to the utility model preferred embodiment, but can not be interpreted as it is limitations on claims.The utility model not only is confined to above embodiment, and its concrete structure allows to change.In a word, all various variations of doing in the protection range of the utility model independent claims are all in protection range of the present utility model.
Claims (2)
1. frequency converter starting cabinet, comprise major loop and control loop, described major loop comprises the circuit breaker that is connected with input, the A.C. contactor that is connected with circuit breaker and the transducer body that is connected with A.C. contactor, described control loop comprises being arranged on makes A.C. contactor get first button of electric adhesive on the cabinet door-plate, it is characterized in that: described control loop also comprises first time-delay relay, first time-delay relay connects first auxiliary relay, and first auxiliary relay connects transducer body.
2. a kind of frequency converter starting cabinet according to claim 1, it is characterized in that: described control loop also comprises being arranged on makes second auxiliary relay get second button of electric adhesive on the cabinet door-plate, second auxiliary relay connects second time-delay relay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320038821 CN203071851U (en) | 2013-01-24 | 2013-01-24 | Starting cabinet for variable-frequency drive |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320038821 CN203071851U (en) | 2013-01-24 | 2013-01-24 | Starting cabinet for variable-frequency drive |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203071851U true CN203071851U (en) | 2013-07-17 |
Family
ID=48770595
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320038821 Expired - Fee Related CN203071851U (en) | 2013-01-24 | 2013-01-24 | Starting cabinet for variable-frequency drive |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203071851U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107390044A (en) * | 2017-06-16 | 2017-11-24 | 深圳易能电气技术股份有限公司 | Automatic fast charging and discharging test system and method |
-
2013
- 2013-01-24 CN CN 201320038821 patent/CN203071851U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107390044A (en) * | 2017-06-16 | 2017-11-24 | 深圳易能电气技术股份有限公司 | Automatic fast charging and discharging test system and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 201499, No. 720, 2 East yuan Lu, Shanghai, Fengxian District Patentee after: Wilke electric (Shanghai) Limited by Share Ltd Address before: 201414 Shanghai city Fengxian District Green Town Light Road No. 1260 building fourth Patentee before: Werkai Electric (Shanghai) Co., Ltd. |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160413 Address after: 200000 Shanghai Fengxian District Green Town Qinggang Light Industrial Park Road No. 12 Patentee after: Wilke drive technology (Shanghai) Co., Ltd. Address before: 201499, No. 720, 2 East yuan Lu, Shanghai, Fengxian District Patentee before: Wilke electric (Shanghai) Limited by Share Ltd |
|
| 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: 20130717 Termination date: 20180124 |