CN203504417U - High-low frequency conversion circuit system - Google Patents
High-low frequency conversion circuit system Download PDFInfo
- Publication number
- CN203504417U CN203504417U CN201320595859.2U CN201320595859U CN203504417U CN 203504417 U CN203504417 U CN 203504417U CN 201320595859 U CN201320595859 U CN 201320595859U CN 203504417 U CN203504417 U CN 203504417U
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- down transformer
- frequency conversion
- circuit system
- low
- low frequency
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Abstract
The utility model relates to high-low frequency conversion wall units, and especially relates to a high-low frequency conversion circuit system. The system comprises an inlet wire power supply and a motor. A step-down transformer, a frequency converter and a filter are connected in sequence between the inlet wire power supply and the motor. A frequency conversion input switch is arranged between the step-down transformer and the inlet wire power supply. A circuit breaker and a fuse are arranged between the step-down transformer and the frequency converter. The high-low frequency conversion circuit system is small in size, low in cost, high in reliability, high in voltage quality, low in line loss, convenient and practical, and applicable to low-voltage electric equipment.
Description
Technical field
The utility model relates to a kind of height frequency conversion combination sideboard, relates in particular to a kind of height frequency changer circuit system.
Background technology
The high converter technique of 10kV height commonly in high-pressure frequency-conversion field, first drops to low pressure by high pressure at present, and then frequency conversion, filtering, be raised to high pressure afterwards again, supplies with high pressure power consumption equipment.The circuit system structure of the high converter technique employing of height is complicated, and the components and parts that need are also many, also needs bypass auxiliary, and operation and realization are all inconvenient, are not also suitable for low-voltage equipment.For this reason, be badly in need of a kind of height frequency conversion system that is applicable to low voltage equipment.
Summary of the invention
For addressing the above problem, the utility model provides a kind of height frequency changer circuit system for low voltage equipment, and this system can directly change to low pressure from high pressure, simple in structure, easy to operate.
Height frequency changer circuit system described in the utility model, comprise incoming power and motor, between incoming power and motor, order is connected to step-down transformer, frequency converter and filter, between step-down transformer and incoming power, be provided with frequency conversion input switch, between step-down transformer and frequency converter, be provided with circuit breaker and fuse.The utility model only adopts a step-down transformer, once just voltage is dropped to 0.69kV, has reduced the quantity of transformer, has reduced circuit loss.And adopt low-voltage variable frequency after step-down, electronic component used is low voltage component, convenient realization, safe and reliable, cost.
For realizing the step-down frequency conversion of 35kV/0.69kV, described incoming power place connects 35kV voltage, and the step-down transformer adopting is 35kV/0.69kV step-down transformer.
For realizing the step-down frequency conversion of 10kV/0.69kV, described incoming power place connects 10kV voltage, and the step-down transformer adopting is 10kV/0.69kV step-down transformer.
The utility model volume is little, and cost is low, and reliability is high, and quality of voltage is high, and line loss is little, convenient and practical, applicable to low voltage equipment.
Accompanying drawing explanation
Fig. 1 is the circuit system figure of the utility model embodiment.
Embodiment
A kind of height frequency changer circuit system, as shown in the figure, comprise incoming power and motor, between incoming power and motor, order is connected to frequency conversion input switch, step-down transformer, circuit breaker, fuse, frequency converter and filter, incoming power input 35kV or 10kV voltage, step-down transformer adopts 35kV/0.69kV or 10kV/0.69kV step-down transformer.
Claims (3)
1. a height frequency changer circuit system, comprise incoming power and motor, it is characterized in that: between incoming power and motor, order is connected to step-down transformer, frequency converter and filter, between step-down transformer and incoming power, be provided with frequency conversion input switch, between step-down transformer and frequency converter, be provided with circuit breaker and fuse.
2. height frequency changer circuit system according to claim 1, is characterized in that: described incoming power place connects 35kV voltage, and the step-down transformer adopting is 35kV/0.69kV step-down transformer.
3. height frequency changer circuit system according to claim 1, is characterized in that: described incoming power place connects 10kV voltage, and the step-down transformer adopting is 10kV/0.69kV step-down transformer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320595859.2U CN203504417U (en) | 2013-09-26 | 2013-09-26 | High-low frequency conversion circuit system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320595859.2U CN203504417U (en) | 2013-09-26 | 2013-09-26 | High-low frequency conversion circuit system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203504417U true CN203504417U (en) | 2014-03-26 |
Family
ID=50335358
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320595859.2U Expired - Fee Related CN203504417U (en) | 2013-09-26 | 2013-09-26 | High-low frequency conversion circuit system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203504417U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106208724A (en) * | 2016-08-31 | 2016-12-07 | 苏州迈力电器有限公司 | Frequency changer circuit system |
-
2013
- 2013-09-26 CN CN201320595859.2U patent/CN203504417U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106208724A (en) * | 2016-08-31 | 2016-12-07 | 苏州迈力电器有限公司 | Frequency changer circuit system |
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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 |
Granted publication date: 20140326 Termination date: 20180926 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |