CN205450082U - Novel three -phase high voltage power supply voltage detecting device - Google Patents
Novel three -phase high voltage power supply voltage detecting device Download PDFInfo
- Publication number
- CN205450082U CN205450082U CN201620012884.7U CN201620012884U CN205450082U CN 205450082 U CN205450082 U CN 205450082U CN 201620012884 U CN201620012884 U CN 201620012884U CN 205450082 U CN205450082 U CN 205450082U
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- voltage
- power supply
- phase
- voltage power
- phase high
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Abstract
The utility model discloses a novel three -phase high voltage power supply voltage detecting device, including signal acquisition subtotal signal conditioning part, the signal acquisition part is connected with the signal conditioning part, signal acquisition partially is that the three high pressure resistance of cluster income gathers three phase current in three -phase high voltage power supply, and the signal conditioning part is through detecting the indirect three phase voltage that calculates of three phase current. The utility model discloses high pressure resistance that the core component adopted and inseparable small -size mutual -inductor price is low, small, the precision is high and the range of application guangZhou, as frequency change such as grid voltage measuring, variable frequency power supply measuring, output voltage measuring and the great occasion of harmonic, consequently have stronger applied superiority.
Description
Technical field
This utility model relates to Three phase high-voltage power voltage detection device.
Background technology
At present the detection method of three-phase high-voltage (6kV, 10kV) supply voltage is that to use voltage transformer be low-voltage by high-voltage variable mostly, enter back into testing circuit carry out detection display or control, if this power supply is variable-frequency power sources, voltage transformer need to use special voltage transformer, and testing cost is high, volume is big.
Summary of the invention
This utility model is higher for high-voltage power voltage, the defect that transition detection is complex, it is provided that Three phase high-voltage power voltage detection device, uses and seals in high-tension resistive in three-phase high-voltage power supply, indirectly calculates three-phase voltage by detection three-phase current.
The technical scheme that this utility model is used for achieving the above object is:
Three phase high-voltage power voltage detection device, including signals collecting part and signal condition part, signals collecting part is connected with signal condition part, described signals collecting part is to seal in three high-tension resistives in three-phase high-voltage power supply to collect three-phase current, and signal condition part is connected with difference form testing circuit by current mode voltage transformer and forms.
Further, described difference form testing circuit is made up of C, Rf, Ic.
The beneficial effects of the utility model are: this utility model core component use high-tension resistive and tight small-sized transformer price is low, volume is little, precision is high and applied range, as network voltage detection, variable-frequency power sources detection, output voltage detection equifrequent change and and harmonic wave occasion greatly, therefore there is stronger applicating superiority.
Accompanying drawing explanation
Fig. 1 is the circuit connection diagram of Three phase high-voltage power voltage detection device.
Detailed description of the invention
Below will be by specific embodiment and combine accompanying drawing this utility model is described.These embodiments are provided so that the disclosure will be to be entirely clear from, and scope of the present utility model is fully conveyed to those skilled in the art.
High voltage potential transformer volume is big, low precision, cost are high and can only run steadily in the long term under conditions of industrial frequency harmonic is little, and the most conventionally employed voltage transformer detects method cost height, the low precision of three-phase high-voltage power supply, volume is big and application limitation is big.This utility model core component use high-tension resistive and tight small-sized transformer price is low, volume is little, precision is high and applied range, as variable-frequency power sources detection equifrequent change and harmonic wave occasion greatly.
The Three phase high-voltage power voltage detection device that this utility model number provides, including signals collecting part and signal condition part, signals collecting part is connected with signal condition part, signals collecting part is to seal in three high-tension resistives in three-phase high-voltage power supply to collect three-phase current, and signal condition part is connected with difference form testing circuit by current mode voltage transformer and forms.Described difference form testing circuit is made up of C, Rf, Ic.
As it is shown in figure 1, signal condition part calculates three-phase voltage indirectly by detection three-phase current.
In one embodiment, as it is shown in figure 1,
1), U, V, W connect three-phase high-voltage power supply, R1, R2, R3 are high-tension resistive, resistance according to rated supply voltage mate, VT1～VT4 is Transient Suppression Diode, suppresses alternate pressure reduction.
2), T1, T2, T3 be DVDI Series Precision current mode voltage transformer, C, Rf, IC form difference form testing circuit.
3), U0=IU0*Rf, V0=IV0*Rf, W0=IW0*Rf
This utility model core component use high-tension resistive and tight small-sized transformer price is low, volume is little, precision is high and applied range, as network voltage detection, variable-frequency power sources detection, output voltage detection equifrequent change and and harmonic wave occasion greatly, therefore there is stronger applicating superiority.
It should be noted that; above-mentioned specific embodiment is merely exemplary; under above-mentioned teaching of the present utility model, those skilled in the art can carry out various improvement and deformation on the basis of above-described embodiment, and these improve or deformation all falls within protection domain of the present utility model.
Claims (2)
1. Three phase high-voltage power voltage detection device, it is characterized in that, including signals collecting part and signal condition part, signals collecting part is connected with signal condition part, described signals collecting part is to seal in three high-tension resistives in three-phase high-voltage power supply to collect three-phase current, and signal condition part is connected with difference form testing circuit by current mode voltage transformer and forms.
Three phase high-voltage power voltage the most according to claim 1 detection device, it is characterised in that described difference form testing circuit is made up of C, Rf, Ic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620012884.7U CN205450082U (en) | 2016-01-08 | 2016-01-08 | Novel three -phase high voltage power supply voltage detecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620012884.7U CN205450082U (en) | 2016-01-08 | 2016-01-08 | Novel three -phase high voltage power supply voltage detecting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205450082U true CN205450082U (en) | 2016-08-10 |
Family
ID=56601114
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620012884.7U Expired - Fee Related CN205450082U (en) | 2016-01-08 | 2016-01-08 | Novel three -phase high voltage power supply voltage detecting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205450082U (en) |
-
2016
- 2016-01-08 CN CN201620012884.7U patent/CN205450082U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| 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: 20160810 Termination date: 20210108 |