CN205861879U - A kind of gear-type high accuracy leakage current of an arrester table tester - Google Patents
A kind of gear-type high accuracy leakage current of an arrester table tester Download PDFInfo
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- CN205861879U CN205861879U CN201620254427.9U CN201620254427U CN205861879U CN 205861879 U CN205861879 U CN 205861879U CN 201620254427 U CN201620254427 U CN 201620254427U CN 205861879 U CN205861879 U CN 205861879U
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Abstract
This utility model belongs to test instrunment design field, concretely relates to a kind of gear-type high accuracy leakage current of an arrester table tester.This utility model provides a kind of gear-type high accuracy leakage current of an arrester table tester, including: test wire splice combinations (1), knob shelves (2), on and off switch (3), power interface (4), circuit board (5), power supply adaptor (6), High Precision Multimeter (7).A kind of gear-type high accuracy leakage current of an arrester table tester that this utility model provides can be effectively improved the credibility of verification, will not enter ash, the phenomenon such as make moist, it is simple to maintenance maintenance, service life is long.
Description
Technical field
This utility model belongs to test instrunment design field, concretely relates to a kind of gear-type high accuracy leakage current of an arrester table tester.
Background technology
The lightning arrester leakance of present stage and actograph tester, it is capable of lightning-arrester action recording and lightning arrester leakance table two functions of verification, but in terms of lightning arrester leakance table verification, there is problems in that 1) electric current is designated as pointer-type, enters after dust or make moist gets rusty easily bite；2) electric current registration precision is relatively low, and minimum scale value is 0.1mA, and precision is the highest；3) electric current flowing through verification ammeter in instrument is inconsistent with the electric current flowing through lightning arrester leakance table, finds that instrument indicated value and leakage current of an arrester table indicated value exist deviation during use.
For solving these problems, applicable a kind of gear-type high accuracy leakage current of an arrester table tester need to be invented.
Summary of the invention
The purpose of this utility model be solve existing instrument use indicator type current meter as verification ammeter exist precision the highest, easily enter ash, make moist, the problem such as bite, it is provided that a kind of gear-type high accuracy leakage current of an arrester table tester.
This utility model provides a kind of gear-type high accuracy leakage current of an arrester table tester, including: test wire splice combinations (1), knob shelves (2), on and off switch (3), power interface (4), circuit board (5), power supply adaptor (6), High Precision Multimeter (7), wherein, described test wire splice combinations (1) is made up of ammeter test lead test jack (8), common port test jack (9), circuit tester display test jack (10)；Described knob shelves (2) produce different electric currents for selecting different gear correspondence difference circuit with difference；The power supply that described on and off switch (3) realizes inputting described power supply adaptor (6) cut-offs；Described power interface (4) connects described power supply adaptor (6) provides power supply；Described circuit board (5) is connected with described knob shelves (2), and the resistance bolck of suitable resistance is soldered to this circuit board, coordinates institute's making alive and gear on-off to produce verification electric current；Described test wire splice combinations (1) is used for connecting described High Precision Multimeter (7), need to verifying leakage current of an arrester table；By 220V voltage step-down during the effect of described power supply adaptor (6).
Further, described High Precision Multimeter (7) is digital.
Further, described knob shelves (2) have 11 gears.
Further, described gear is set to 0.3mA, 0.60mA, 1.0mA, 1.3mA, 1.6mA, 2.0mA, 2.5mA, 3.0mA, 3.5mA, 4.0mA, 4.2mA.
A kind of gear-type high accuracy leakage current of an arrester table tester that this utility model provides has the advantages that: uses the mode that is connected in series to ensure that electric current and the concordance of the electric current flowing through lightning arrester leakance table flowing through verification ammeter, improves the credibility of verification；By high precision digital multimeter as verification ammeter, make use of the high accuracy of digimer, improve the accuracy of verification；And because verification ammeter uses high precision digital multimeter, high precision digital multimeter precise structure, ash, the phenomenon such as make moist will not be entered, it is simple to maintenance maintenance, service life is long.
Other features and advantages of the utility model will illustrate in the following description, and, partly become apparent from description, or understand by implementing this utility model.The purpose of this utility model and other advantages can be realized by structure specifically noted in the description write, claims and accompanying drawing and be obtained.
Accompanying drawing explanation
Accompanying drawing described herein is used for providing being further appreciated by of the present utility model, constitutes the part of the application, and schematic description and description of the present utility model is used for explaining this utility model, is not intended that improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the structural representation of a kind of gear-type described in the utility model high accuracy leakage current of an arrester table tester；
Fig. 2 is the schematic diagram of a kind of gear-type described in the utility model high accuracy leakage current of an arrester table tester；
Fig. 3 is the use connection diagram of a kind of gear-type described in the utility model high accuracy leakage current of an arrester table tester.
Detailed description of the invention
The purpose of this utility model be solve existing instrument use indicator type current meter as verification ammeter exist precision the highest, easily enter ash, make moist, the problem such as bite, it is provided that a kind of gear-type high accuracy leakage current of an arrester table tester.
In conjunction with Fig. 1, this utility model is described, a kind of gear-type high accuracy leakage current of an arrester table tester, including: test wire splice combinations (1), knob shelves (2), on and off switch (3), power interface (4), circuit board (5), power supply adaptor (6), High Precision Multimeter (7), wherein, described test wire splice combinations (1) is made up of ammeter test lead test jack (8), common port test jack (9), circuit tester display test jack (10)；Described knob shelves (2) produce different electric currents for selecting different gear correspondence difference circuit with difference；The power supply that described on and off switch (3) realizes inputting described power supply adaptor (6) cut-offs；Described power interface (4) connects described power supply adaptor (6) provides power supply；Described circuit board (5) is connected with described knob shelves (2), and the resistance bolck of suitable resistance is soldered to this circuit board, coordinates institute's making alive and gear on-off to produce verification electric current；Described test wire splice combinations (1) is used for connecting described High Precision Multimeter (7), need to verifying leakage current of an arrester table；By 220V voltage step-down during the effect of described power supply adaptor (6).
Further, described High Precision Multimeter (7) is digital.
Further, described knob shelves (2) have 11 gears, can realize the verifying function of 0 3mA current range.
Further, described gear is set to 0.3mA, 0.60mA, 1.0mA, 1.3mA, 1.6mA, 2.0mA, 2.5mA, 3.0mA, 3.5mA, 4.0mA, 4.2mA.
As in figure 2 it is shown, ultimate principle of the present utility model is according to Ohm's law, reasonably combined voltage and resistance produce required electric current, use High Precision Multimeter to be connected in series in loop carry out contrast to judge that ammeter is the most qualified with leakage current of an arrester meter reading.Therefore, the problem that the utilization of this instrument efficiently solves the verification of leakage current of an arrester table.
As it is shown on figure 3, this utility model operating instruction is as follows:
(1), by one end of 2 p-wires accessing common trial jack (9) and circuit tester display test jack (10), the other end accesses the testing current jack of High Precision Multimeter (7)；
(2), one end of 2 p-wires being accessed ammeter test lead test jack (8) and common trial jack (9), the other end accesses the both sides of spark gap ammeter to be measured；
(3), accessing power supply, by one end incoming transport 220V voltage of power supply adaptor (6), the other end accesses power interface (4)；
(4), turn on the power switch (3), manual regulation stall knob (2), spark gap ammeter registration is compared with circuit tester indicated value, if spark gap ammeter indicated value is consistent with the value regulated in tester, it was demonstrated that this spark gap ammeter is working properly；Repeatedly comparison is carried out, to determine whether pointer exists bite phenomenon in the range ability of spark gap.
This utility model uses power supply adaptor that 220V alternating current power supply blood pressure lowering is done power supply, uses fixed resistance to make gear-type high accuracy leakage current of an arrester table tester, and checking precision is up to 0.001mA, and current feedback circuit internal structure is simple, it is simple to maintenance maintenance.
A kind of gear-type high accuracy leakage current of an arrester table tester that this utility model provides has the advantages that: uses the mode that is connected in series to ensure that electric current and the concordance of the electric current flowing through lightning arrester leakance table flowing through verification ammeter, improves the credibility of verification；By high precision digital multimeter as verification ammeter, make use of the high accuracy of digimer, improve the accuracy of verification；And because verification ammeter uses high precision digital multimeter, high precision digital multimeter precise structure, ash, the phenomenon such as make moist will not be entered, it is simple to maintenance maintenance, service life is long.
The foregoing is only preferred embodiment of the present utility model, be not limited to this utility model, for a person skilled in the art, this utility model can have various modifications and variations.All within spirit of the present utility model and principle, any modification, equivalent substitution and improvement etc. made, within should be included in protection domain of the present utility model.
Claims (4)
1. a gear-type high accuracy leakage current of an arrester table tester, it is characterized in that, including: test wire splice combinations (1), knob shelves (2), on and off switch (3), power interface (4), circuit board (5), power supply adaptor (6), High Precision Multimeter (7), wherein, described test wire splice combinations (1) is made up of ammeter test lead test jack (8), common port test jack (9), circuit tester display test jack (10)；Described knob shelves (2) produce different electric currents for selecting different gear correspondence difference circuit with difference；The power supply that described on and off switch (3) realizes inputting described power supply adaptor (6) cut-offs；Described power interface (4) connects described power supply adaptor (6) provides power supply；Described circuit board (5) is connected with described knob shelves (2), and the resistance bolck of suitable resistance is soldered to this circuit board, coordinates institute's making alive and gear on-off to produce verification electric current；Described test wire splice combinations (1) is used for connecting described High Precision Multimeter (7), need to verifying leakage current of an arrester table；By 220V voltage step-down during the effect of described power supply adaptor (6).
A kind of gear-type high accuracy leakage current of an arrester table tester, it is characterised in that described High Precision Multimeter (7) is digital.
A kind of gear-type high accuracy leakage current of an arrester table tester, it is characterised in that described knob shelves (2) have 11 gears.
A kind of gear-type high accuracy leakage current of an arrester table tester, it is characterised in that described gear is set to 0.3mA, 0.60mA, 1.0mA, 1.3mA, 1.6mA, 2.0mA, 2.5mA, 3.0mA, 3.5mA, 4.0mA, 4.2mA.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620254427.9U CN205861879U (en) | 2016-03-30 | 2016-03-30 | A kind of gear-type high accuracy leakage current of an arrester table tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620254427.9U CN205861879U (en) | 2016-03-30 | 2016-03-30 | A kind of gear-type high accuracy leakage current of an arrester table tester |
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| Publication Number | Publication Date |
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| CN205861879U true CN205861879U (en) | 2017-01-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201620254427.9U Active CN205861879U (en) | 2016-03-30 | 2016-03-30 | A kind of gear-type high accuracy leakage current of an arrester table tester |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113238182A (en) * | 2021-04-12 | 2021-08-10 | 国网河南省电力公司鹤壁供电公司 | On-site electric energy meter load calibration device |
-
2016
- 2016-03-30 CN CN201620254427.9U patent/CN205861879U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113238182A (en) * | 2021-04-12 | 2021-08-10 | 国网河南省电力公司鹤壁供电公司 | On-site electric energy meter load calibration device |
| CN113238182B (en) * | 2021-04-12 | 2023-07-25 | 国网河南省电力公司鹤壁供电公司 | On-spot electric energy meter load calibration equipment that uses |
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