CN205282264U - Outdoor current transformer of open -type - Google Patents
Outdoor current transformer of open -type Download PDFInfo
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- CN205282264U CN205282264U CN201521112268.0U CN201521112268U CN205282264U CN 205282264 U CN205282264 U CN 205282264U CN 201521112268 U CN201521112268 U CN 201521112268U CN 205282264 U CN205282264 U CN 205282264U
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Abstract
The utility model discloses an outdoor current transformer of open -type, the problem of can not detect and need external other check out test sets to detect outdoor current transformer of open -type directly automatically after the installation is solved, a technical solution is characterized in that, rectifier module is last to be coupled to be used for indicateing whether outdoor current transformer of open -type normally work from detection device, from detection device including being coupled on rectifier module and being used for the comparing element of receiving detection signal and output compare signal and being coupled the display element in order to receive the comparison signal and in order whether normally to work to outdoor current transformer of open -type to go on instructing in comparing element in response to the comparison signal, the utility model discloses an outdoor current transformer of open -type is through the combined action of comparing element with display element for only when detecting the voltage that reaches and reach a definite value, display element just can work and be in normal operating conditions in order to indicate, realizes direct automated inspection's function.
Description
Technical field
This utility model relates to current transformer, more specifically, it relates to a kind of open-type Outdoor Current Transformer.
Background technology
Transformer is the equipment of scaling transformation voltage or electric current. The function of transformer is that high voltage or big electric current scaling transformation are become normal low voltage (100V) or standard small area analysis (5A or 10A refers both to rated value), in order to realize measuring instrument, protection equipment and the standardization of automatic controlling device, miniaturization. Transformer can also be used with and separates high-voltage system, to ensure the safety of the person and equipment.
The disclosed a kind of outdoor open-type current transformer of application number 201320753833.6, stable, the high accuracy that can be realized current transformer by this outdoor open-type current transformer are used, its simple in construction, it is convenient to install, leakage field is few, and measuring accuracy is high, office puts that performance is good, aging resistance, use safety, life-span are long. But outdoor open-type current transformer is after installing, need it is detected, to avoid the outdoor open-type current transformer installed for damage, this detection then requires over the instrument entrained by installation personnel and carries out, and current used outdoor open-type current transformer does not have automatic detection device, outdoor open-type current transformer is generally all arranged on higher position simultaneously, carrying instrument can be inconvenient, so current used outdoor open-type current transformer has certain room for improvement.
Utility model content
For the deficiency that prior art exists, the purpose of this utility model is in that to provide a kind of open-type Outdoor Current Transformer with automatic detection function.
For achieving the above object, this utility model provides following technical scheme: a kind of open-type Outdoor Current Transformer, including housing and secondary coil winding, described secondary coil winding is coupled with rectification filtering module output detections signal, described rectification filtering module is coupled with the self-test device for indicating open-type Outdoor Current Transformer whether normal operation, described self-test device includes being coupled on rectification filtering module and for receiving detection signal and exporting the comparing unit of comparison signal and be coupled to comparing unit to receive comparison signal and in response to comparison signal with to the open-type Outdoor Current Transformer display unit whether normal operation indicates.
Adopt such scheme, combined effect by comparing unit Yu display unit, when making the voltage only reached when detection reach certain value, display unit just can work and be in normal operating conditions with instruction, realize the function of directly detection automatically, namely when the voltage detected is lower than certain value, illustrate that this open-type Outdoor Current Transformer itself has certain problem, installation personnel is needed to carry out keeping in repair or changing, avoid installing problematic open-type Outdoor Current Transformer and causing unnecessary trouble, improve work efficiency, reduce the number of times repeatedly carrying out back and forth reprocessing.
As preferably, described comparing unit includes the first estate comparing unit, the second grade comparing unit and tertiary gradient comparing unit, described the first estate comparing unit, the second grade comparing unit and tertiary gradient comparing unit are all coupled to rectification filtering module to receive detection signal, and corresponding output the first estate comparison signal, the second grade comparison signal and tertiary gradient comparison signal.
As preferably, described display unit includes the first display unit, the second display unit and the 3rd display unit, and described first display unit corresponds to tertiary gradient comparing unit corresponding to the first estate comparing unit, the second display unit corresponding to the second grade comparing unit and the 3rd display unit.
Adopt such scheme, by the setting of Three Estate so that open-type Outdoor Current Transformer can adapt to more working environment afterwards being produced, it is possible to oneself is defined, if being such as in the first estate, then the first estate comparing unit controls the first display unit work; If being in the second grade, then the first estate comparing unit controls the first display unit work, and the second grade comparing unit controls the second display unit work simultaneously; If the tertiary gradient of being in, then the first estate comparing unit controls the first display unit work, the second grade comparing unit controls the second display unit work and tertiary gradient comparing unit controls the 3rd display unit work.
As preferably, described display unit is indicated by light.
Adopt such scheme, be easy to obtain the duty of open-type Outdoor Current Transformer by lamplight pointing so that maintainer obtain more intuitively required for the information known.
As preferably, described the first estate comparing unit is correspondingly arranged on first reference value and is coupled with the first regulon for regulating first reference value, described second grade comparing unit is correspondingly arranged on the second reference value and is coupled with the second regulon for regulating the second reference value, and described tertiary gradient comparing unit is correspondingly arranged on the 3rd reference value and is coupled with the 3rd regulon for regulating the 3rd reference value.
Adopt such scheme, by the setting of regulon so that in the process produced, the reference value of each grade can be configured, it is simple to suitable in all kinds of environment, improve the convenient degree used.
This utility model is in terms of existing technologies:
1, by the combined effect of comparing unit Yu display unit so that when the voltage only reached when detection reaches certain value, display unit just can work and be in normal operating conditions with instruction, it is achieved the directly function of detection automatically.
Accompanying drawing explanation
In order to be illustrated more clearly that this utility model embodiment or technical scheme of the prior art, the accompanying drawing used required in embodiment or description of the prior art will be briefly described below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the premise not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structural representation of the present embodiment;
Fig. 2 is the circuit theory diagrams of the self-test device of the present embodiment.
In figure: 1, housing; 2, secondary coil winding; 3, rectification filtering module; 4, self-test device; 41, comparing unit; 411, the first estate comparing unit; 412, the second grade comparing unit; 413, tertiary gradient comparing unit; 42, display unit; 421, the first display unit; 422, the second display unit; 423, the 3rd display unit; 431, the first regulon; 432, the second regulon; 433, the 3rd regulon.
Detailed description of the invention
Below in conjunction with accompanying drawing, this utility model is described in further detail.
This specific embodiment is only to explanation of the present utility model; it is not to restriction of the present utility model; the present embodiment can be made the amendment not having creative contribution as required by those skilled in the art after reading this specification, but as long as being affected by the protection of Patent Law in right of the present utility model.
The disclosed a kind of open-type Outdoor Current Transformer of the present embodiment, including housing 1 and secondary coil winding 2, the winding of secondary coil may be contained within housing 1, secondary coil winding 2 is coupled with rectification filtering module 3 output detections signal simultaneously, rectification filtering module 3 includes rectifier bridge, rectifier bridge and filter unit, the bridge that rectifier bridge is made up of four diodes realizes the alternating voltage of input to be converted into the DC voltage of output, filter unit is made up of filter capacitor and resistance simultaneously, to be filtered DC voltage exporting galvanic current pressure.
Rectification filtering module 3 is coupled with the self-test device 4 for indicating open-type Outdoor Current Transformer whether normal operation, self-test device 4 includes being coupled on rectification filtering module 3 and for receiving detection signal and exporting the comparing unit 41 of comparison signal and be coupled to comparing unit 41 to receive comparison signal and in response to comparison signal with to the open-type Outdoor Current Transformer display unit 42 whether normal operation indicates, display unit 42 is indicated by light.
Embodiment one, only with a comparing unit 41 and display unit 42, comparing unit 41 is preferably the comparator of LM393A model, the in-phase end of comparing unit 41 is to receive detection signal, the end of oppisite phase of comparing unit 41 is connected to default reference signal, the outfan output comparison signal of comparing unit 41, display unit 42 includes display lamp and protective resistance, the anode of display lamp is coupled to the outfan of comparing unit 41, ground connection after its negative electrode connection protective resistance, make when detect the magnitude of voltage of signal more than time preset the magnitude of voltage of reference signal time, then control display lamp to display, to indicate open-type Outdoor Current Transformer to be in normal duty, also allow for directly observing when the carrying out of later maintenance personnel is overhauled display lamp to judge open-type Outdoor Current Transformer whether normal operation simultaneously, improve work efficiency.
Embodiment two, comparing unit 41 includes the first estate comparing unit 411, second grade comparing unit 412 and tertiary gradient comparing unit 413, the first estate comparing unit 411, second grade comparing unit 412 and tertiary gradient comparing unit 413 are all coupled to rectification filtering module 3 to receive detection signal, and correspondence output the first estate comparison signal, second grade comparison signal and tertiary gradient comparison signal, display unit 42 includes the first display unit 421, second display unit 422 and the 3rd display unit 423, first display unit 421 is corresponding to the first estate comparing unit 411, second display unit 422 corresponds to tertiary gradient comparing unit 413 corresponding to the second grade comparing unit 412 and the 3rd display unit 423.
The first estate comparing unit 411 is preferably the comparator of LM393A model, the in-phase end of the first estate comparing unit 411 is to receive detection signal, the end of oppisite phase of the first estate comparing unit 411 is connected to default reference signal Vref1, the outfan of the first estate comparing unit 411 exports the first estate comparison signal, first display unit 421 includes the first display lamp LED1 and the first protective resistance R1, the anode of the first display lamp LED1 is coupled to the outfan of the first estate comparing unit 41131, its negative electrode connects ground connection after the first protective resistance R1, make when open-type Outdoor Current Transformer is in normal operation, then the first display lamp LED1 displays.
Second grade comparing unit 412 is preferably the comparator of LM393A model, the in-phase end of the second grade comparing unit 412 is to receive detection signal, the end of oppisite phase of the second grade comparing unit 412 is connected to default reference signal Vref2, the outfan of the second grade comparing unit 412 exports the second grade comparison signal, second display unit 422 includes the second display lamp LED2 and the second protective resistance R2, the anode of the second display lamp LED2 is coupled to the outfan of the second grade comparing unit 41232, its negative electrode connects ground connection after the second protective resistance R2, when the electric current in the cable that open-type Outdoor Current Transformer detects is very big, the voltage that then the secondary coil winding 2 of open-type electrical outdoor flow sensor exports also increases, and the reference signal Vref2 of this voltage reference signal Vref1 more than the first estate comparing unit 411 and the second grade comparing unit 412, and when now open-type Outdoor Current Transformer is in normal operation, then the first display lamp LED1 and the second display lamp LED2 shows work simultaneously.
Tertiary gradient comparing unit 413 is preferably the comparator of LM393A model, the in-phase end of tertiary gradient comparing unit 413 is to receive detection signal, the end of oppisite phase of tertiary gradient comparing unit 413 is connected to default reference signal Vref3, the outfan output tertiary gradient comparison signal of tertiary gradient comparing unit 413, 3rd display unit 423 includes the 3rd display lamp LED3 and the three protective resistance R3, the anode of the 3rd display lamp LED3 is coupled to the outfan of tertiary gradient comparing unit 41333, ground connection after its negative electrode connection the 3rd protective resistance R3, when the electric current in the cable that open-type Outdoor Current Transformer detects is very big, the voltage that then the tertiary coil winding of open-type electrical outdoor flow sensor exports also increases, and this voltage is more than the reference signal Vref1 of the first estate comparing unit 411, the reference signal Vref2 of the second grade comparing unit 412 and reference signal Vref3 of tertiary gradient comparing unit 413, and when now open-type Outdoor Current Transformer is in normal operation, then the first display lamp LED1, second display lamp LED2 and the three display lamp LED3 shows work simultaneously.
By the display of multiple grades, to realize the electric current in the detected cable of open-type Outdoor Current Transformer is shown judgement qualitatively, it is simple to attendant judges, improves the safety coefficient in maintenance process.
Embodiment three, the present embodiment realizes based on embodiment two, namely the first estate comparing unit 411 is correspondingly arranged on first reference value and is coupled with the first regulon 431 for regulating first reference value, second grade comparing unit 412 is correspondingly arranged on the second reference value and is coupled with the second regulon 432 for regulating the second reference value, tertiary gradient comparing unit 413 is correspondingly arranged on the 3rd reference value and is coupled with the 3rd regulon 433 for regulating the 3rd reference value, first regulon 431 is the first adjustment resistance RP1, second regulon 432 is the second adjustment resistance RP2, 3rd regulon 433 is the 3rd adjustment resistance RP3, by the first adjustment resistance RP1 that slides respectively, second regulates resistance RP2 and the three adjustment resistance RP3 can to first reference value, second reference value and the 3rd reference value are adjusted, so that the reference value of each grade being configured in the process produced, it is easy to be applicable to all kinds of environment, improve the convenient degree used.
Claims (5)
1. an open-type Outdoor Current Transformer, including housing (1) and secondary coil winding (2), described secondary coil winding (2) is coupled with rectification filtering module (3) output detections signal, it is characterized in that: described rectification filtering module (3) is coupled with the self-test device (4) for indicating open-type Outdoor Current Transformer whether normal operation, it is upper and for receiving detection signal and exporting the comparing unit (41) of comparison signal and be coupled to comparing unit (41) to receive comparison signal and in response to comparison signal with whether normal operation indicates to open-type Outdoor Current Transformer display unit (42) that described self-test device (4) includes being coupled to rectification filtering module (3).
2. open-type Outdoor Current Transformer according to claim 1, it is characterized in that: described comparing unit (41) includes the first estate comparing unit (411), the second grade comparing unit (412) and tertiary gradient comparing unit (413), described the first estate comparing unit (411), the second grade comparing unit (412) are all coupled to rectification filtering module (3) to receive detection signal with tertiary gradient comparing unit (413), and corresponding output the first estate comparison signal, the second grade comparison signal and tertiary gradient comparison signal.
3. open-type Outdoor Current Transformer according to claim 2, it is characterized in that: described display unit (42) includes the first display unit (421), the second display unit (422) and the 3rd display unit (423), described first display unit (421) corresponding to the first estate comparing unit (411), the second display unit (422) corresponding to the second grade comparing unit (412) with the 3rd display unit (423) corresponding to tertiary gradient comparing unit (413).
4. open-type Outdoor Current Transformer according to claim 1, is characterized in that: described display unit (42) is indicated by light.
5. open-type Outdoor Current Transformer according to claim 2, it is characterized in that: described the first estate comparing unit (411) is correspondingly arranged on first reference value and is coupled with the first regulon (431) for regulating first reference value, described second grade comparing unit (412) is correspondingly arranged on the second reference value and is coupled with the second regulon (432) for regulating the second reference value, and described tertiary gradient comparing unit (413) is correspondingly arranged on the 3rd reference value and is coupled with the 3rd regulon (433) for regulating the 3rd reference value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521112268.0U CN205282264U (en) | 2015-12-29 | 2015-12-29 | Outdoor current transformer of open -type |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521112268.0U CN205282264U (en) | 2015-12-29 | 2015-12-29 | Outdoor current transformer of open -type |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205282264U true CN205282264U (en) | 2016-06-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521112268.0U Active CN205282264U (en) | 2015-12-29 | 2015-12-29 | Outdoor current transformer of open -type |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205282264U (en) |
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2015
- 2015-12-29 CN CN201521112268.0U patent/CN205282264U/en active Active
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