CN214954042U - Multi-station auxiliary test bench for current transformer verification - Google Patents
Multi-station auxiliary test bench for current transformer verification Download PDFInfo
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- CN214954042U CN214954042U CN202121084910.4U CN202121084910U CN214954042U CN 214954042 U CN214954042 U CN 214954042U CN 202121084910 U CN202121084910 U CN 202121084910U CN 214954042 U CN214954042 U CN 214954042U
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Abstract
The utility model discloses a multistation auxiliary test platform is used in current transformer examination relates to mutual-inductor check out test set technical field, and the main objective provides one kind can be with a plurality of tested samples of batch detection to quick access or withdraw from the multistation auxiliary test platform of measuring return circuit. The utility model discloses a main technical scheme does: the utility model provides a current transformer examines and determine and uses multistation auxiliary test platform, includes: mutual-inductor check gauge, current load case, standard current transformer, rise current ware and detection station, first switch setting is between first power return line and first tie point, the second switch setting is between first power supply line and second tie point, first connecting wire sets up between third tie point and first short-circuit point, the both ends of second connecting wire are connected respectively in fourth tie point and fourth switch, the third switch setting is between first connecting wire and second connecting wire, first collection point can be connected with one of them fourth switch. The utility model discloses mainly used current transformer's detection.
Description
Technical Field
The utility model relates to a mutual-inductor check out test set technical field especially relates to a multistation auxiliary test platform is used in current transformer examination.
Background
The current transformer is the measuring equipment who converts the heavy current in the circuit into the undercurrent in proportion, and the current parameter of being convenient for through this conversion is measured, and at present, current transformer calibrating installation commonly used, some do not have special auxiliary test platform, only reserve in measuring the return circuit and be surveyed the sample access mouth, and some only have simplex position auxiliary test platform can only install and examine and determine one, need artifical wiring, disconnect line, examine and determine the inefficiency. This simple simplex auxiliary test bench has mainly two disadvantages: (1) a plurality of detection stations are not designed; (2) the measured sample can not be quickly connected into or withdrawn from the measuring loop according to the set requirement. The traditional calibrating device is limited by the design of the auxiliary test board, the automation control degree cannot be improved, and the multiple batch calibrating functions cannot be realized.
SUMMERY OF THE UTILITY MODEL
In view of this, the embodiment of the utility model provides a multistation auxiliary test platform is used in current transformer examination, the main objective provides one kind can be with batch detection a plurality of samples under test to can insert fast or withdraw from a multistation auxiliary test platform is used in current transformer examination of measurement return circuit.
In order to achieve the above object, the utility model mainly provides the following technical scheme:
the embodiment of the utility model provides a current transformer examines and determine and uses multistation auxiliary test platform, include:
the transformer calibrator comprises a first input end, a second input end, a differential input end and a first acquisition line, wherein two ends of the first acquisition line are respectively connected to the differential input end and the second input end, and the first acquisition line is provided with a plurality of first acquisition points;
the current load box is arranged on the first acquisition line;
a standard current transformer comprising a first body, a first supply line and a first return line, the first body connected to the first input and the differential input;
a current booster connected to the first power supply line;
the detection station is a plurality of, every the detection station includes first switch, second switch, third switch, fourth switch, first tie point, second tie point, third tie point, fourth tie point, first connecting line, second connecting line and first short circuit point, and first switch setting is in first electric return line with between the first tie point, the second switch setting is in first power supply line with between the second tie point, first connecting line setting is in between third tie point and the first short circuit point, the both ends of second connecting line connect respectively in the fourth tie point with the fourth switch, the third switch sets up first connecting line with between the second connecting line, one of them first collection point can with one of them the fourth switch is connected.
Furthermore, each detection station further comprises a third connecting line and a fourth connecting line, the third connecting line is arranged between the first switch and the first connecting point, and the fourth connecting line is arranged between the second switch and the second connecting point.
Furthermore, two adjacent detection stations are a first detection station and a second detection station, and the fourth connecting line of the first detection station is connected to the third connecting line of the second detection station.
Further, the transformer calibrator further comprises a first input line and a first differential input line, the first body comprises a plurality of standard switches, one end of each standard switch is connected to the first body, the other end of each standard switch is connected to the first input line, the first input line is connected to the first input end, one end of the first differential input line is connected to the first body, and the other end of the first differential input line is connected to the differential input end.
Furthermore, the transformer calibrator further comprises a second input line and a second differential input line, one end of the second differential input line is connected to the differential input end, the other end of the second differential input line is connected to the first acquisition line, one end of the second input line is connected to the second input point, and the other end of the second input line is connected to the first acquisition line.
Further, a control system is connected to each of the first switch, the second switch, the third switch, the fourth switch and the standard switch.
Further, the current rising device is provided with a current rising input end, a current rising output end and a voltage regulating output end, the voltage regulating output end is connected to the current rising input end, and the current rising output end is connected to the first power supply line.
Further, each detection station further comprises a resistor, wherein the resistor is arranged on the first connecting line and is positioned between the third switch and the fourth switch.
Further, each of the fourth switches is a three-phase switch.
Compared with the prior art, the utility model discloses following technological effect has:
in the technical scheme provided by the embodiment of the utility model, the mutual inductor calibrator is used for testing and calibrating the current mutual inductor, and is provided with a first input end, a second input end, a differential flow input end and a first acquisition line, wherein two ends of the first acquisition line are respectively connected with the differential flow input end and the second input end, and the first acquisition line is provided with a plurality of first acquisition points; the current load box is used for providing an effective load and is arranged on the first collecting line; the standard current transformer is used for providing a current transformer calibration standard and comprises a first body, a first power supply line and a first return line, wherein the first body is connected to a first input end and a differential input end; the current booster is used for boosting current and is connected with the first power supply line; the detection stations are used for detecting the tested equipment, each detection station comprises a first switch, a second switch, a third switch, a fourth switch, a first connection point, a second connection point, a third connection point, a fourth connection point, a first connection line, a second connection line and a first short-circuit point, the first switch is arranged between a first return wire and the first connection point, the second switch is arranged between a first power supply line and the second connection point, the first connection line is arranged between the third connection point and the first short-circuit point, two ends of the second connection line are respectively connected with the fourth connection point and the fourth switch, the third switch is arranged between the first connection line and the second connection line, one first collection point can be connected with one fourth switch, compared with the prior art, no special auxiliary test bench is provided, and only a tested sample access port is reserved in a measurement loop, some auxiliary test boards only have a single station, only one auxiliary test board can be installed and verified at a time, manual wiring and disconnection are needed, and verification efficiency is low. The simple single-station auxiliary test bench is not provided with a plurality of station detection stations; the measured sample can not be quickly connected into or withdrawn from the measuring loop according to the set requirement. Traditional calibrating installation is subject to auxiliary test platform's design, can't improve the degree of automation, can't realize many batch verification functions, in this technical scheme, be connected with every detection station through first power supply line, make first power supply line can supply power to every detection station, rethread first collection line is connected with every detection station, make the information data on every detection station can be gathered to first collection line, and, first tie point has on every detection station, the second tie point, third tie point and fourth tie point, make detection station can be the easy to assemble by the sample, not only can be easy to assemble with dismantle by the sample, can also detect a plurality of by the sample in the same batch.
Drawings
Fig. 1 is a schematic structural view of a multi-station auxiliary test bench for testing a current transformer according to an embodiment of the present invention;
fig. 2 is a schematic view of a first usage state structure of a multi-station auxiliary test bench for testing a current transformer according to an embodiment of the present invention;
fig. 3 is the embodiment of the utility model provides a current transformer examines and determine with multistation auxiliary test platform's second kind use state structure schematic diagram.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
As shown in fig. 1, the embodiment of the utility model provides a multistation auxiliary test platform is used in current transformer examination, include:
the transformer calibrator 1 is provided with a first input end 11, a second input end 12, a differential flow input end 13 and a first acquisition line 14, wherein two ends of the first acquisition line 14 are respectively connected to the differential flow input end 13 and the second input end 12, and the first acquisition line 14 is provided with a plurality of first acquisition points;
a current load box 2, the current load box 2 being disposed on the first collection line 14;
a standard current transformer comprising a first body 31, a first supply line 32 and a first return line 33, the first body 31 being connected to the first input 11 and the differential input 13;
a current booster 4, the current booster 4 being connected to the first power supply line 32;
the detection station comprises a plurality of detection stations, each detection station comprises a first switch 51, a second switch 52, a third switch 53, a fourth switch 54, a first connection point 55, a second connection point 56, a third connection point 57, a fourth connection point 58, a first connection line, a second connection line and a first short-circuit point 50, the first switch 51 is arranged between the first return line 33 and the first connection point 55, the second switch 52 is arranged between the first power supply line 32 and the second connection point 56, the first connection line is arranged between the third connection point 57 and the first short-circuit point 50, two ends of the second connection line are respectively connected to the fourth connection point 58 and the fourth switch 54, the third switch 53 is arranged between the first connection line and the second connection line, and one of the first collection points can be connected with one of the fourth switches 54.
In the technical scheme provided by the embodiment of the utility model, mutual-inductor calibrator 1 is used for testing and calibrating current mutual inductor, mutual-inductor calibrator 1 has first input 11, second input 12, differential flow input 13 and first collection line 14, the both ends of first collection line 14 are connected respectively to differential flow input 13 and second input 12, have a plurality of first collection points on the first collection line 14; the current load box 2 is used for providing an effective load, and the current load box 2 is arranged on the first acquisition line 14; the standard current transformer is used for providing a current transformer calibration standard and comprises a first body 31, a first power supply line 32 and a first return line 33, wherein the first body 31 is connected to the first input end 11 and the differential input end 13; the current booster 4 functions as an up-flow, and the current booster 4 is connected to the first power supply line 32; the detection stations are used for detecting the device to be detected, the detection stations are multiple, each detection station comprises a first switch 51, a second switch 52, a third switch 53, a fourth switch 54, a first connection point 55, a second connection point 56, a third connection point 57, a fourth connection point 58, a first connection line, a second connection line and a first short-circuit point 50, the first switch 51 is arranged between the first return wire 33 and the first connection point 55, the second switch 52 is arranged between the first power supply wire 32 and the second connection point 56, the first connection line is arranged between the third connection point 57 and the first short-circuit point 50, two ends of the second connection line are respectively connected to the fourth connection point 58 and the fourth switch 54, the third switch 53 is arranged between the first connection line and the second connection line, one of the first collection points can be connected with one of the fourth switches 54, compared with the prior art, the special auxiliary test bench is not provided, only the tested sample 9 access port is reserved in the measurement loop, and only the single-station auxiliary test bench is provided in some cases, so that only one test bench can be installed and tested at a time, manual wiring and disconnection are needed, and the testing efficiency is low. The simple single-station auxiliary test bench is not provided with a plurality of station detection stations; the measured sample 9 can not be quickly connected to or disconnected from the measuring loop according to the set requirement. Traditional calibrating installation is subject to auxiliary test platform's design, can't improve the automated control degree, can't realize many batch verification functions, in this technical scheme, be connected with every detection station through first power supply line 32, make first power supply line 32 can supply power to every detection station, rethread first collection line 14 is connected with every detection station, make first collection line 14 can gather the information data on every detection station, and, first tie point 55 has on every detection station, second tie point 56, third tie point 57 and fourth tie point 58, make detection station can be easy to assemble by measured sample 9, not only can easy to assemble and dismantle by measured sample 9, can also detect a plurality of by measured sample 9 with batching.
The mutual inductor calibrator 1 is used for testing and calibrating a current mutual inductor, the mutual inductor calibrator 1 is provided with a first input end 11, a second input end 12, a differential current input end 13 and a first acquisition line 14, two ends of the first acquisition line 14 are respectively connected to the differential current input end 13 and the second input end 12, the first acquisition line 14 is provided with a plurality of first acquisition points, the first acquisition points can be connected with a fourth switch 54, and data of a tested sample 9 can be transmitted to the mutual inductor calibrator 1 through the first acquisition line 14; the current load box 2 is used for providing an effective load, and the current load box 2 is arranged on the first acquisition line 14; the standard current transformer is used for providing a current transformer calibration standard and comprises a first body 31, a first power supply line 32 and a first return line 33, wherein the first body 31 is connected to the first input end 11 and the differential input end 13; the current rising device 4 is used for rising current, the current rising device 4 is connected to the first power supply line 32, the current rising device 4 is provided with a current rising input end, a current rising output end and a voltage regulating output end, the voltage regulating output end is connected to the current rising input end, and the current rising output end is connected to the first power supply line 32; the detection stations are used for detecting the device to be detected, the detection stations are multiple, each detection station comprises a first switch 51, a second switch 52, a third switch 53, a fourth switch 54, a first connection point 55, a second connection point 56, a third connection point 57, a fourth connection point 58, a first connection line, a second connection line and a first short-circuit point 50, the first switch 51 is arranged between the first return wire 33 and the first connection point 55, the second switch 52 is arranged between the first power supply wire 32 and the second connection point 56, the first connection line is arranged between the third connection point 57 and the first short-circuit point 50, two ends of the second connection line are respectively connected to the fourth connection point 58 and the fourth switch 54, the third switch 53 is arranged between the first connection line and the second connection line, one of the first collection points can be connected with one of the fourth switches 54, each of the fourth switches 54 is a three-phase switch, each detection station further includes a third connection line 61 and a fourth connection line 62, the third connection line 61 is disposed between the first switch 51 and the first connection point 55, the fourth connection line 62 is disposed between the second switch 52 and the second connection, when the specifications of the samples 9 to be detected are the same, that is, the parameters of the rated transformation ratio, the rated load, the accuracy grade, and the like are all consistent, the verification is performed in a batch verification mode, and 6 samples 9 to be detected can be simultaneously connected in series, that is, there are 6 detection stations, that is, a first station 81, a second station 82, a third station 83, a fourth station 84, a fifth station 85, and a sixth station 86, and when the batch verification of 6 samples 9 to be detected is realized according to the set program, as shown in fig. 2, the operations are as follows:
step 3, the first switch 811 of the first station 81 and the second switch 862 of the sixth station 86 are closed, the third switch 813 of the first station 81 is opened, the third switch 823 of the second station 82, the third switch 833 of the third station 83, the third switch 843 of the fourth station 84, the third switch 853 of the fifth station 85 and the third switch 863 of the sixth station 86 are closed, the fourth switch 814 of the first station 81 is opened from the first short-circuit point 810 of the first station 81, and is connected to the first collection point 151, the fourth switch 824 of the second station 82 is closed to the first short-circuit point 820 of the second station 82, the fourth switch 834 of the third station 83 is closed to the first short-circuit point 830 of the third station 83, the fourth switch 844 of the fourth station 84 is closed to the first short-circuit point 840 of the fourth station 84, the fourth switch 854 of the fifth station 85 is closed to the first short-circuit point 850 of the fifth station 85, and the fourth switch 864 of the sixth station 86 is closed to the first short-circuit point 860 of the sixth station 86;
step 5, closing the third switch 813 of the first station 81, closing the fourth switch 814 of the first station 81 and the first short-circuit point 810 of the first station 81, disconnecting the fourth switch 824 of the second station 82 and the first short-circuit point 820 of the second station 82, connecting the fourth switch to the first acquisition point 152, disconnecting the third switch 823 of the second station 82, acquiring the 1 st measurement point measurement data of the measured sample 9 of the second station 82 by using the transformer calibrator 1, and so on, completing the data acquisition of the 1 st measurement point of the measured sample 9 of the 6 stations, and then returning the switches to the step 3;
step 6, the current booster 4 continues to boost current specified by the 2 nd measuring point, and then the step 4 and the step 5 are repeated to finish data acquisition of all measuring points of the measured sample 9 at the 6 stations;
and 7, after the current booster 4 is lowered as specified, the current booster 4 is disconnected, all the first switches, the second switches and the standard switches 311 are disconnected, all the third switches are closed, and all the fourth switches are connected to the corresponding first short-circuit points.
In the verification process, the close control of various switches can realize remote automatic control through the parameter setting of mutual-inductor calibrating device, thereby reach the effect of automatic control switch, in this technical scheme, be connected with every detection station through first power supply line 32, make first power supply line 32 can supply power to every detection station, rethread first collection line 14 is connected with every detection station, make first collection line 14 can gather the information data on every detection station, and, first tie point has on every detection station, the second tie point, third tie point and fourth tie point, make detection station can be easy to assemble by measured sample 9, not only can easy to assemble and dismantle by measured sample 9, can also detect a plurality of by measured sample 9 simultaneously.
When the specifications of the tested samples 9 are different, that is, when one or all of the parameters such as the rated transformation ratio, the rated load, the accuracy level, and the like are not consistent, the verification is performed by using a verification mode one by one, and 6 tested samples 9 can be simultaneously connected in series, that is, there are 6 detection stations, which are a first station 81, a second station 82, a third station 83, a fourth station 84, a fifth station 85, and a sixth station 86, and batch verification of 6 tested samples 9 is realized according to a set program, as shown in fig. 3, the specific operations are as follows:
step 3, closing the first switch 811 and the second switch 812 of the first station 81, opening the first switch and the second switch of the second station 82 to the sixth station 86, opening the third switch 813 of the first station 81, opening the third switch 823 of the second station 82, opening the third switch 833 of the third station 83, opening the third switch 843 of the fourth station 84, opening the third switch 853 of the fifth station 85, and closing the third switch 863 of the sixth station 86, opening the fourth switch 814 of the first station 81 from the first short-circuit point 810 of the first station 81 and connecting to the first collection point 151, closing the fourth switch 824 of the second station 82 from the first short-circuit point 820 of the second station 82, closing the fourth switch 834 of the third station 83 from the first short-circuit point 830 of the third station 83, closing the fourth switch 844 of the fourth station 84 from the first short-circuit point 840 of the fourth station 84, closing the fourth switch 854 of the fifth station 85 from the first short-circuit point 850 of the fifth station 85, the fourth switch 864 of the sixth station 86 is closed with the first short 860 of the sixth station 86;
step 5, opening the first switch 811 and the second switch 812 of the first station 81, closing the first switch 821 of the second station 82 and the second switch 822 of the second station 82, closing the third switch 813 of the first station 81, closing the fourth switch 814 of the first station 81 and the first short-circuit point 810 of the first station 81, opening the third switch 823 of the second station 82, and opening the fourth switch 824 of the second station 82 and the first short-circuit point 820 of the second station 82, and connecting to the first collection point 152;
step 6, the gear of the standard current transformer is adjusted to the gear of the second station 82 required to be used by the tested sample 9 as required, and the step 4 is repeated until the tested samples 9 on all stations are measured, and the current rising device 4 is disconnected after the current rising device 4 is lowered as specified;
and 7, opening all the first switches, the second switches and the standard switches 311, closing all the third switches, and connecting all the fourth switches to the corresponding first short-circuit points.
Through the steps, the detected samples 9 with different specifications can be detected, so that the technical effect of improving the detection efficiency is achieved.
When some of the specifications of the tested samples 9 are the same and the other are different, that is, when several of the parameters such as the rated transformation ratio, the rated load, the accuracy grade and the like are inconsistent, batch verification is adopted for the same specification, and batch verification, or mixed verification mode, is adopted for different specifications.
The technical scheme has the advantages that the measurement loop is innovatively designed, a batch verification mode, a platform-by-platform verification mode and a mixed verification mode are realized through a flexible and convenient control mode, the batch verification problem of the current transformers is substantially solved, the batch verification problem of the current transformers can be solved by matching the multi-station auxiliary test platform with a traditional hardware setting and software control system, and the verification efficiency is greatly improved.
Further, two adjacent detection stations are a first detection station and a second detection station, and the fourth connecting line 62 of the first detection station is connected to the third connecting line 61 of the second detection station. In this embodiment, the fourth connecting line 62 of the first detection station is connected to the third connecting line 61 of the second detection station, so that each adjacent detection station can be connected in series, thereby achieving the technical effect of improving the detection efficiency.
Further, the transformer calibrator 1 further has a first input line 15 and a first differential input line 16, the first body 31 has a plurality of standard switches 311, one end of each standard switch 311 is connected to the first body 31, the other end is connected to the first input line 15, the first input line 15 is connected to the first input terminal 11, one end of the first differential input line 16 is connected to the first body 31, and the other end is connected to the differential input terminal 13. In this embodiment, a first input line 15 and a first differential input line 16 are added, the first body 31 has a plurality of standard switches 311, one end of each standard switch 311 is connected to the first body 31, the other end is connected to the first input line 15, the plurality of standard switches 311 can adjust the rated transformation ratio of the standard current transformer, the first input line 15 is connected to the first input end 11, one end of the first differential input line 16 is connected to the first body 31, and the other end is connected to the differential input end 13, so that the transformer calibrator 1 can detect the data of the standard current transformer, and the technical effect of obtaining the data of the standard current transformer is achieved.
Further, the transformer checker 1 has a second input line 17 and a second differential input line 18, one end of the second differential input line 18 is connected to the differential input terminal 13, the other end is connected to the first collection line 14, one end of the second input line 17 is connected to the second input terminal 12, and the other end is connected to the first collection line 14. In this embodiment, a second input line 17 and a second differential input line 18 are added, one end of the second differential input line 18 is connected to the differential input end 13, the other end of the second differential input line is connected to the first sampling line 14, one end of the second input line 17 is connected to the second input end 12, and the other end of the second differential input line is connected to the first sampling line 14, so that the transformer calibrator 1 can detect data of each detected sample 9 transmitted by the first sampling line 14, and a technical effect of acquiring data of each detected sample 9 is achieved.
Further, a control system is connected to each of the first switch 51, the second switch 52, the third switch 53, the fourth switch 54 and the standard switch 311. In this embodiment, a control system is added, and the control system can control each switch, thereby achieving the technical effect of automatic control.
Further, each inspection station further includes a resistor 63, and the resistor 63 is disposed on the first connection line and between the third switch 53 and the fourth switch 54. In this embodiment, the detection station is further defined, the resistor 63 is disposed on the first connection line and between the third switch 53 and the fourth switch 54, and when the third connection point 57 and the fourth connection point 58 are communicated with each other, the resistor 63 can perform an interference function, so as to achieve the technical effect of protecting the circuit.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (9)
1. The utility model provides a current transformer examines and determine and uses multistation auxiliary test platform which characterized in that includes:
the transformer calibrator comprises a first input end, a second input end, a differential input end and a first acquisition line, wherein two ends of the first acquisition line are respectively connected to the differential input end and the second input end, and the first acquisition line is provided with a plurality of first acquisition points;
the current load box is arranged on the first acquisition line;
a standard current transformer comprising a first body, a first supply line and a first return line, the first body connected to the first input and the differential input;
a current booster connected to the first power supply line;
the detection station is a plurality of, every the detection station includes first switch, second switch, third switch, fourth switch, first tie point, second tie point, third tie point, fourth tie point, first connecting line, second connecting line and first short circuit point, and first switch setting is in first electric return line with between the first tie point, the second switch setting is in first power supply line with between the second tie point, first connecting line setting is in between third tie point and the first short circuit point, the both ends of second connecting line connect respectively in the fourth tie point with the fourth switch, the third switch sets up first connecting line with between the second connecting line, one of them first collection point can with one of them the fourth switch is connected.
2. The multistation auxiliary test bench for testing the current transformer according to claim 1, characterized in that,
each detection station further comprises a third connecting line and a fourth connecting line, the third connecting line is arranged between the first switch and the first connecting point, and the fourth connecting line is arranged between the second switch and the second connecting point.
3. The multistation auxiliary test bench for testing the current transformer according to claim 2, characterized in that,
the two adjacent detection stations are a first detection station and a second detection station, and the fourth connecting line of the first detection station is connected with the third connecting line of the second detection station.
4. The multistation auxiliary test bench for the verification of the current transformer according to any one of claims 1 to 3,
the transformer calibrator further comprises a first input line and a first differential input line, the first body comprises a plurality of standard switches, one end of each standard switch is connected to the first body, the other end of each standard switch is connected to the first input line, the first input line is connected to the first input end, one end of the first differential input line is connected to the first body, and the other end of the first differential input line is connected to the differential input end.
5. The multistation auxiliary test bench for testing the current transformer according to claim 4, characterized in that,
the transformer calibrator further comprises a second input line and a second differential input line, one end of the second differential input line is connected to the differential input end, the other end of the second differential input line is connected to the first acquisition line, one end of the second input line is connected to the second input end, and the other end of the second input line is connected to the first acquisition line.
6. The multistation auxiliary test bench for testing the current transformer according to claim 4, further comprising:
a control system connected to each of the first switch, the second switch, the third switch, the fourth switch, and the standard switch, respectively.
7. The multistation auxiliary test bench for the verification of the current transformer according to any one of claims 1 to 3,
the current rising device is provided with a current rising input end, a current rising output end and a voltage regulating output end, the voltage regulating output end is connected to the current rising input end, and the current rising output end is connected to the first power supply line.
8. The multistation auxiliary test bench for the verification of the current transformer according to any one of claims 1 to 3,
each of the inspection stations further includes a resistor disposed on the first connection line and between the third switch and the fourth switch.
9. The multistation auxiliary test bench for the verification of the current transformer according to any one of claims 1 to 3,
each of the fourth switches is a three-phase switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121084910.4U CN214954042U (en) | 2021-05-20 | 2021-05-20 | Multi-station auxiliary test bench for current transformer verification |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121084910.4U CN214954042U (en) | 2021-05-20 | 2021-05-20 | Multi-station auxiliary test bench for current transformer verification |
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| CN214954042U true CN214954042U (en) | 2021-11-30 |
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| CN202121084910.4U Active CN214954042U (en) | 2021-05-20 | 2021-05-20 | Multi-station auxiliary test bench for current transformer verification |
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2021
- 2021-05-20 CN CN202121084910.4U patent/CN214954042U/en active Active
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