CN219417621U - Transformer test fixture for single-phase intelligent ammeter - Google Patents
Transformer test fixture for single-phase intelligent ammeter Download PDFInfo
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- CN219417621U CN219417621U CN202320051234.3U CN202320051234U CN219417621U CN 219417621 U CN219417621 U CN 219417621U CN 202320051234 U CN202320051234 U CN 202320051234U CN 219417621 U CN219417621 U CN 219417621U
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- 238000012360 testing method Methods 0.000 title claims abstract description 80
- 238000005259 measurement Methods 0.000 claims abstract description 25
- 239000003063 flame retardant Substances 0.000 claims description 20
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims description 18
- 239000002184 metal Substances 0.000 claims description 8
- 229910000831 Steel Inorganic materials 0.000 claims description 7
- 239000010959 steel Substances 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 8
- 241000270722 Crocodylidae Species 0.000 description 3
- LNNWVNGFPYWNQE-GMIGKAJZSA-N desomorphine Chemical compound C1C2=CC=C(O)C3=C2[C@]24CCN(C)[C@H]1[C@@H]2CCC[C@@H]4O3 LNNWVNGFPYWNQE-GMIGKAJZSA-N 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000004088 simulation Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 241000270728 Alligator Species 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
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Abstract
The utility model relates to a transformer testing tool for a single-phase intelligent ammeter, which comprises a base and a base, wherein a testing circuit is arranged in the base, a jack is arranged on the base, a current testing line and a connecting line are arranged on the base, and a power input end and a voltage measuring terminal are arranged on the base; the utility model has the advantages that: the transformer is fixed on the base through the jack, and the test circuit is arranged in the base, so that the transformer test can be realized, the complex and complicated test loop building step is avoided, the tested transformer is only required to be placed, corresponding test instruments and analog loads are lapped on the current test line, the voltage measurement terminal and the connecting line, various parameters of the transformer can be obtained, the test step is greatly simplified, and the efficiency of test work is improved; in addition, in the test process, the wires which are exposed excessively are not contacted any more, so that the situation that the test result is changed due to the fact that the wires are touched by mistake is avoided, and the measurement stability is improved.
Description
Technical Field
The utility model relates to a transformer testing tool for a single-phase intelligent ammeter.
Background
The existing transformer measurement is to supply power to the transformer by a meter calibrating table body, use a power consumption meter to measure the power consumption of the transformer when no-load, use an adjustable rheostat as an analog load of the transformer, and use a universal meter to measure the voltage of each pin of the primary and secondary circuits of the transformer and the current of the secondary load loop. The actual operation of the current transformer measurement has the following problems:
and (3) a step of: the operation process is complicated, the data of a transformer under different working conditions need to be rewiring for many times, time and labor are wasted, and batch measurement is more difficult to implement. The tester operation flow is approximately as follows: 1. powering up the transformer: the tester connects the two ends of the primary input loop of the transformer with the connecting wires (hereinafter referred to as 'connecting wires') with crocodile clips at the two ends to the L, N end of the voltage output end of the meter calibration table body; after the voltage of the meter calibration table is increased to a preset voltage (alternating current 220V) and stabilized, the transformer is electrified; 2. measurement of no-load conditions of the transformer: the primary input loop wiring mode of the transformer is shown in item 1, the voltage of the meter calibrating table is increased to a preset voltage (alternating current 220V) and is stable, three secondary output voltages are respectively measured by using an alternating current gear of the universal meter, and test data are recorded; 3. measurement of load conditions of the transformer: the primary input loop connection mode of the transformer is shown in the 1 st, and 3 secondary output ends of the transformer are respectively connected with the ammeter and the adjustable resistor in series by connecting wires. And (3) raising the voltage of the meter calibrating table to a preset voltage (alternating current 220V) and stabilizing, adjusting the adjustable resistor to a proper resistance value, reading the load current of three secondary outputs of the transformer through three ampere meters, respectively testing two ends of three output pins of the three secondary outputs by using the ampere meters, recording data and completing the test.
Secondly, the measurement reliability is poor, because the distance between two pins of each group of secondary output ends of the transformer used by the existing single-phase intelligent ammeter is 5mm, the too narrow distance brings considerable difficulty to the measurement and construction circuit of the transformer, and the metal exposed outside the crocodile clamp for fixing the connecting wire is extremely easy to be in false touch in the measurement operation process to cause mutual short circuit, thus affecting the measurement value or damaging the transformer.
Thirdly,: the safety is poor, and current transformer measurement builds the circuit and directly utilizes the connecting wire to draw 220 alternating current voltage to the primary input pin of transformer from school table body, and the tester must hand universal meter stick direct contact each pin of transformer to measure transformer voltage parameter, under the circuit of temporarily building, because the circuit of being infirm lacks stability, this kind of mode of reading data causes the electric shock accident easily.
Disclosure of Invention
The utility model aims to solve the problem of complicated operation process in the existing transformer measurement, and provides a transformer test fixture for a single-phase intelligent ammeter, which realizes the fixation of a transformer through a base, can simplify the test steps of the transformer and greatly improves the test efficiency.
In order to solve the technical problems, the utility model is realized by the following technical scheme: the utility model provides a transformer test fixture for single-phase smart electric meter, includes the base and sets up the base in the base, be equipped with test circuit in the base, be equipped with the jack that links to each other with the transformer that is surveyed on the base, be equipped with the electric current test line that is used for testing the secondary output current when three routes transformer area carries on the base to and be used for the external analog load's of three sets of transformer secondary output connecting wire, be equipped with power input and voltage measurement terminal on the base.
Preferably, the base is provided with a positioning groove, and the jack is arranged in the positioning groove.
Preferably, the base is provided with a groove, and the base is arranged in the groove.
Preferably, a cover plate with a sealing groove is arranged on the base, and the cover plate is detachably arranged on the base through screws.
Preferably, the power input end comprises a flame-retardant binding post and a flame-retardant screw, wherein the flame-retardant binding post is fixedly connected to the base, and the flame-retardant screw is arranged on the flame-retardant binding post.
Preferably, the voltage measuring terminal comprises a metal screw and a steel sheet, and the steel sheet is fixed on the base through the metal screw.
Preferably, the current test line and the connecting line are both provided with fixing clamps, and the fixing clamps are provided with nameplates.
Preferably, the base is a flame retardant base.
In summary, the utility model has the advantages that: the transformer is fixed on the base through the jack, and the test circuit is arranged in the base, so that the transformer test can be realized, the complex and complicated test loop building step is avoided, the tested transformer is only required to be placed, corresponding test instruments and analog loads are lapped on the current test line, the voltage measurement terminal and the connecting line, various parameters of the transformer can be obtained, the test step is greatly simplified, and the efficiency of test work is improved; in addition, in the test process, too much exposed wires are not contacted, so that the situation that the test result is changed due to mistaken touching of the wires is avoided, and the measurement stability is improved; and secondly, the voltage measuring terminal is connected with the voltmeter, so that the output voltage of each output winding of the transformer can be effectively monitored, the current testing line is connected with the ammeter, the secondary output current of the three-way transformer when in load can be effectively tested, the connecting line is connected with the adjustable resistors simulating the load carried by the three secondary outputs of the transformer, and the voltage is provided for the primary input end of the transformer through the power input end, so that the physical isolation between the power input end and each testing end is realized, and the personal safety of a tester is protected.
Drawings
The utility model is further described below with reference to the accompanying drawings:
FIG. 1 is a schematic structural diagram of a transformer testing tool for a single-phase smart meter;
FIG. 2 is a schematic diagram of a structure of a single-phase smart meter transformer test fixture cover plate when opened;
FIG. 3 is a schematic diagram of the structure of the present utility model in use.
Reference numerals:
1 base, 11 recess, 12 apron, 2 base, 21 jack, 22 constant head tank, 3 electric current test line, 4 connecting wire, 5 power input, 51 fire-retardant terminal, 52 fire-retardant screw, 6 voltage measurement terminal, 60 metal screw, 61 steel sheet, 7 fixation clamp, 8 ampere meter, 9 analog load, 10 voltmeter, 100 transformer.
Detailed Description
As shown in fig. 1, fig. 2 and fig. 3, a transformer test fixture for a single-phase smart meter comprises a base 1 and a base 2 arranged in the base 1, wherein a test circuit is arranged in the base 2, the test circuit in the embodiment is in the prior art, the test circuit in the embodiment is integrated on a circuit board, a jack 21 connected with a tested transformer 100 is arranged on the base 2, a current test wire 3 for testing secondary output current when a three-way transformer is loaded is arranged on the base 2, and a connecting wire 4 for externally connecting a simulation load 9 with secondary output ends of the three-way transformer is arranged on the base 1, a power input end 5 and a voltage measurement terminal 6 are arranged on the base 1, and when the transformer test fixture is used, an ammeter 8 is connected through the current test wire 3, the connecting wire 4 is connected with the simulation load 9, the voltage measurement terminal 6 is connected with the voltage meter 10, and the power input end 5 is connected with an alternating current power supply wire.
The transformer is fixed on the base 2 through the jack 21, and as the test circuit is arranged in the base 2, the transformer test can be realized, the complex and complicated test loop construction step is avoided, the tested transformer is only needed to be placed, and corresponding test instruments and the simulation load 9 are lapped on the current test line 3, the voltage measurement terminal 6 and the connecting line 4, so that various parameters of the transformer can be obtained, the test step is greatly simplified, and the efficiency of the test work is improved; in addition, in the test process, too much exposed wires are not contacted, so that the situation that the test result is changed due to mistaken touching of the wires is avoided, and the measurement stability is improved; and secondly, the voltage measuring terminal 6 is connected with a voltmeter, so that the output voltage of each output winding of the transformer can be effectively monitored, the current testing line 3 is connected with the ammeter 8, the secondary output current of the three-way transformer when loaded can be effectively tested, the connecting line 4 is connected with the adjustable resistors of the loads carried by the three secondary outputs of the analog transformer, and the voltage is provided for the primary input end 5 of the transformer through the power input end 5, so that the physical isolation between the power input end 5 and each testing end is realized, and the personal safety of testing personnel is protected.
The base 2 is provided with a positioning groove 22, the jack 21 is arranged in the positioning groove 22, positioning and installation of a transformer to be tested can be achieved, matching of the transformer to be tested and the jack 21 is ensured, occurrence of roll and short circuit of the transformer in the testing process is avoided, and specifically, in the embodiment, the jack 21 comprises a first pin, a second pin, a fourth pin, a sixth pin, a seventh pin, an eighth pin and a ninth pin, wherein the first pin and the fourth pin are primary input ends 5 of the transformer, the first pin and the second pin, the sixth pin and the seventh pin are three paths of secondary output ends of the transformer respectively. The base 1 is provided with the groove 11, the base 2 is arranged in the groove 11, the base 2 can be limited in the groove 11, and the fixing quality of the base 2 can be improved. The cover plate 12 with the sealing groove 11 is arranged on the base 1, the cover plate 12 is detachably arranged on the base 1 through screws, the groove 11 can be sealed, dust or sundries can be effectively prevented from entering the groove 11, the cover plate 12 is detachably arranged on the base 1 through screws, and the cover plate 12 is convenient to open.
The power input end 5 comprises a flame-retardant binding post 51 and a flame-retardant screw 52, the flame-retardant binding post 51 is fixedly connected to the base 1, and the flame-retardant screw is arranged on the flame-retardant binding post 51, so that direct fixation of a wire can be realized, fixation of a crocodile clamp can be realized, a power wire is not easy to fall off in the measuring process, accidental open circuit of primary power supply of a transformer is avoided, and the power-on reliability and safety are greatly enhanced. The voltage measurement terminal 6 comprises a metal screw 60 and a steel sheet 61, the steel sheet 61 is fixed on the base 1 through the metal screw 60, a tester can conveniently use a universal meter to temporarily measure, and a voltmeter with an alligator clamp test wire 3 can also be used for long-time real-time measurement and control.
The utility model discloses a current test line, including the connecting wire 4, the current test line 3, be equipped with on the connecting wire 4, just all be equipped with fixation clamp 7 on the fixation clamp 7, fixation clamp 7 enables the quick connection ampere meter 8 of current test line 3 to and the external mould load of connecting wire 4, improve the reliability of connection, the installation is dismantled conveniently, and the setting of data plate makes things convenient for operating personnel to distinguish first test line 3 and second test line 3, guarantees the reliability that current test line 3 and connecting wire 4 are connected. The base 1 is a flame-retardant base 1, and the safety performance of the whole base 1 can be improved.
The above embodiments are merely illustrative embodiments of the present utility model, but the technical features of the present utility model are not limited thereto, and any changes or modifications made by those skilled in the art within the scope of the present utility model are included in the scope of the present utility model.
Claims (8)
1. A transformer test fixture for single-phase smart electric meter, its characterized in that: the test circuit is arranged in the base, a jack connected with a transformer to be tested is arranged on the base, a current test line for testing secondary output current when the three-way transformer is loaded is arranged on the base, and a connecting line for externally connecting the secondary output ends of the three-way transformer with an analog load is arranged on the base, and a power input end and a voltage measurement terminal are arranged on the base.
2. The transformer test fixture for a single-phase smart meter according to claim 1, wherein: the base is provided with a positioning groove, and the jack is arranged in the positioning groove.
3. The transformer test fixture for a single-phase smart meter according to claim 1, wherein: the base is provided with a groove, and the base is arranged in the groove.
4. The transformer test fixture for a single-phase smart meter according to claim 3, wherein: the base is provided with a cover plate with a sealing groove, and the cover plate is detachably arranged on the base through screws.
5. The transformer test fixture for a single-phase smart meter according to claim 1, wherein: the power input end comprises a flame-retardant binding post and a flame-retardant screw, wherein the flame-retardant binding post is fixedly connected to the base, and the flame-retardant screw is arranged on the flame-retardant binding post.
6. The transformer test fixture for a single-phase smart meter according to claim 1, wherein: the voltage measurement terminal comprises a metal screw and a steel sheet, and the steel sheet is fixed on the base through the metal screw.
7. The transformer test fixture for a single-phase smart meter according to claim 1, wherein: the current test line and the connecting line are both provided with fixing clamps, and the fixing clamps are provided with nameplates.
8. The transformer test fixture for a single-phase smart meter according to claim 1, wherein:
the base is a flame-retardant base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320051234.3U CN219417621U (en) | 2023-01-06 | 2023-01-06 | Transformer test fixture for single-phase intelligent ammeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320051234.3U CN219417621U (en) | 2023-01-06 | 2023-01-06 | Transformer test fixture for single-phase intelligent ammeter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219417621U true CN219417621U (en) | 2023-07-25 |
Family
ID=87209396
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320051234.3U Active CN219417621U (en) | 2023-01-06 | 2023-01-06 | Transformer test fixture for single-phase intelligent ammeter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219417621U (en) |
-
2023
- 2023-01-06 CN CN202320051234.3U patent/CN219417621U/en active Active
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