CN206697925U - A kind of frequency converter drain current suppressing device - Google Patents
A kind of frequency converter drain current suppressing device Download PDFInfo
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- CN206697925U CN206697925U CN201720268005.1U CN201720268005U CN206697925U CN 206697925 U CN206697925 U CN 206697925U CN 201720268005 U CN201720268005 U CN 201720268005U CN 206697925 U CN206697925 U CN 206697925U
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Abstract
It the utility model is related to a kind of frequency converter drain current suppressing device, connection circuit including housing and in housing, the both ends of housing are respectively equipped with binding post, connection circuit includes line scan pickup coil side and load end, a line is provided between line scan pickup coil side and load end, two wires and three lines, one line is provided with the first inductance, two wires is provided with the second inductance, three lines are provided with the 3rd inductance, bridging has the first electric capacity and the second electric capacity between one line and two wires, bridging has the second electric capacity and the 3rd electric capacity between two wires and three lines, bridging has first resistor and second resistance between one line and two wires, bridging has second resistance and 3rd resistor between two wires and three lines, 4th electric capacity is separately set on the extension of the 3rd electric capacity and with being connected to form PE ends after setting the 4th resistance on the extension of first resistor.The utility model beneficial effect：Conduction Interference of the frequency converter to power network is reduced, earth leakage protective device tripping operation probability is caused when reducing frequency converter work, there is provided system reliability, easy-to-connect are flexible.
Description
Technical field
It the utility model is related to electrical equipment protection technique field, more particularly to a kind of frequency converter drain current suppressing device.
Background technology
Earth leakage protective device can be caused to trip if producing leakage current when frequency converter works, form the Conduction Interference to power network, shadow
The reliability of acoustic system.
Utility model content
In view of this, the purpose of this utility model is to provide a kind of frequency converter drain current suppressing device, to solve prior art
In deficiency.
In order to achieve the above object, the purpose of this utility model is achieved through the following technical solutions：
A kind of frequency converter drain current suppressing device, including housing and the connection circuit in the housing are provided, it is described
The both ends of housing are respectively equipped with binding post, and the connection circuit includes line scan pickup coil side and load end, the line scan pickup coil side and described bear
Load is provided with a line, two wires and three lines between end, and a line is provided with the first inductance, and the two wires is provided with the second inductance, institute
State three lines and be provided with the 3rd inductance, being bridged between a line and the two wires has the first electric capacity and the second electric capacity, the two wires
Bridging has second electric capacity and the 3rd electric capacity between three line, and being bridged between a line and the two wires has the first electricity
Resistance and second resistance, being bridged between the two wires and three line has the second resistance and 3rd resistor, separately the described 3rd
4th electric capacity is set on the extension of electric capacity and with being connected formation after setting the 4th resistance on the extension of the first resistor
PE ends.
Above-mentioned frequency converter drain current suppressing device, wherein, the side of the housing is provided with connecting plate.
Compared with the prior art, the beneficial effects of the utility model are：
Conduction Interference of the frequency converter to power network is reduced, earth leakage protective device tripping operation probability is caused when reducing frequency converter work, is carried
It is flexible for system reliability, easy-to-connect.
Brief description of the drawings
Form a part of accompanying drawing of the present utility model to be used for providing further understanding to of the present utility model, this practicality is new
The schematic description and description of type is used to explain the utility model, does not form to improper restriction of the present utility model.
In accompanying drawing：
Fig. 1 shows the structural representation of the utility model frequency converter drain current suppressing device；
Fig. 2 shows the circuit theory diagrams of the utility model frequency converter drain current suppressing device.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out
Clearly and completely describing, it is clear that described embodiment is only the utility model part of the embodiment, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment obtained, belong to the scope of the utility model protection.
It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the utility model can
To be mutually combined.
With reference to shown in figure 1, Fig. 2, the utility model frequency converter drain current suppressing device includes housing 1 and in housing 1
Connection circuit, the both ends of housing 1 are respectively equipped with binding post 2, and connection circuit includes line scan pickup coil side LINE and load end LOAD, line
It is provided with a line L1L1 ', two wires L2L2 ' and three line L3L3 ' between terminal LINE and load end LOAD, a line L1L1 ' is provided with the
One inductance L1, two wires L2L2 ' are provided with the 3rd inductance L3, a line L1L1 ' and two wires provided with the second inductance L2, three line L3L3 '
Bridging has the first electric capacity C1 and the second electric capacity C2 between L2L2 ', and being bridged between two wires L2L2 ' and three line L3L3 ' has the second electric capacity
C2 and the 3rd electric capacity C3, being bridged between a line L1L1 ' and two wires L2L2 ' has first resistor R1 and second resistance R2, two wires L2L2 '
And three bridging between line L3L3 ' have second resistance R2 and 3rd resistor R3, the 4th is separately set on the 3rd electric capacity C3 extension
Electric capacity C4 simultaneously is connected to form PE ends with first resistor R1 extension after the 4th resistance R4 of setting.In the technical program, shell
The side of body 1 is provided with connecting plate 3, facilitates in-wall mounting.The electrical characteristic of this drain current suppressing device：Rated voltage：440VAC,
Heating current：34A, 40% duty rated current：48A, frequency of use：Max60Hz, overload capacity：Start shooting 120A, radiating side
Formula：Natural cooling, degree of protection：IP20, voltage-withstand test：Phase phase 2100VDC, phase ground 2650VDC, weather classification：25/100/
21。
From above-described embodiment as can be seen that advantage of the present utility model is：
Conduction Interference of the frequency converter to power network is reduced, earth leakage protective device tripping operation probability is caused when reducing frequency converter work, is carried
It is flexible for system reliability, easy-to-connect.
Specific embodiment of the utility model is described in detail above, but the utility model is not restricted to the above
The specific embodiment of description, it is intended only as example.To those skilled in the art, any equivalent modifications and substitute also all
Among category of the present utility model.Therefore, the impartial conversion made in the case where not departing from spirit and scope of the present utility model
And modification, it should all cover in the scope of the utility model.
Claims (2)
- A kind of 1. frequency converter drain current suppressing device, it is characterised in that the connection circuit including housing and in the housing, The both ends of the housing are respectively equipped with binding post, and the connection circuit includes line scan pickup coil side and load end, the line scan pickup coil side and institute State and a line, two wires and three lines are provided between load end, a line is provided with the first inductance, and the two wires is provided with the second electricity Sense, three line are provided with the 3rd inductance, and being bridged between a line and the two wires has the first electric capacity and the second electric capacity, described Bridging has second electric capacity and the 3rd electric capacity between two wires and three line, between a line and the two wires bridging have the One resistance and second resistance, being bridged between the two wires and three line has the second resistance and 3rd resistor, separately described 4th electric capacity is set on the extension of the 3rd electric capacity and with being connected after setting the 4th resistance on the extension of the first resistor Form PE ends.
- 2. frequency converter drain current suppressing device as claimed in claim 1, it is characterised in that the side of the housing is provided with connecting plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720268005.1U CN206697925U (en) | 2017-03-20 | 2017-03-20 | A kind of frequency converter drain current suppressing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720268005.1U CN206697925U (en) | 2017-03-20 | 2017-03-20 | A kind of frequency converter drain current suppressing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206697925U true CN206697925U (en) | 2017-12-01 |
Family
ID=60443818
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720268005.1U Active CN206697925U (en) | 2017-03-20 | 2017-03-20 | A kind of frequency converter drain current suppressing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206697925U (en) |
-
2017
- 2017-03-20 CN CN201720268005.1U patent/CN206697925U/en active Active
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