CN210015779U - Current transformer with adjustable transformation ratio - Google Patents
Current transformer with adjustable transformation ratio Download PDFInfo
- Publication number
- CN210015779U CN210015779U CN201920916043.2U CN201920916043U CN210015779U CN 210015779 U CN210015779 U CN 210015779U CN 201920916043 U CN201920916043 U CN 201920916043U CN 210015779 U CN210015779 U CN 210015779U
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- winding coil
- current transformer
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- 230000009466 transformation Effects 0.000 title claims abstract description 15
- 238000004804 winding Methods 0.000 claims description 34
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 12
- 238000005259 measurement Methods 0.000 abstract description 6
- 238000005452 bending Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
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Abstract
The utility model discloses a current transformer with adjustable transformation ratio, the bottom of support is provided with the axis, and the support passes through the axis and rotationally movable mounting on the base, is provided with first worm wheel in the epaxial, first worm is rotationally movable mounting on the base, and first worm meshes with first worm wheel mutually, is provided with first head of turning round soon at a tip of first worm the both sides portion of casing is provided with the counter roll respectively, and the casing passes through the counter roll and rotationally movable mounting on the support, is provided with the second worm wheel on the counter roll of casing a lateral part, the second worm rotationally movable mounting on the support, and the second worm meshes with the second worm wheel mutually, is provided with the second at a tip of second worm and turns round the head soon, the utility model has the advantages that: the adjustment of the measurement transformation ratio of the current transformer is realized, different measurement requirements are well adapted, the threading requirements of cables in different directions are met, the bending of the cables is reduced, and time and labor are saved.
Description
Technical Field
The utility model relates to an electric power metering instrument's technical field, more specifically say so and relate to current transformer's technical field.
Background
A current transformer is an electrical device that converts a primary current with a large value into a secondary current with a small value through a certain transformation ratio according to the principle of electromagnetic induction so as to perform protection or measurement. However, the current transformer which is common at present has the following disadvantages: firstly, because the current transformer is usually fixed in the power distribution cabinet and cannot be moved and adjusted, the cable can only be passed through the current transformer by pulling the routing direction of the cable in the process of distributing and connecting the cable, and the process of threading the cable needs to bend the cable, which is complicated and laborious; secondly, under the condition that the number of turns of the primary side coil is not changed, the measurement transformation ratio of the current transformer is a fixed value, cannot be adjusted, and cannot be well adapted to different measurement requirements.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a can adjust measuring transformation ratio in order to solve above-mentioned not enough to can satisfy not equidirectional cable and wear to draw the requirement, reduce buckling of cable, current transformer with adjustable labour saving and time saving's transformation ratio.
The utility model discloses a solve above-mentioned technical problem and the technical solution who adopts as follows:
the ratio-variable adjustable current transformer comprises a shell, an iron core, a first winding coil, a paired second winding coil, a base, a support, a first worm, a second worm, a first wiring stud, a second wiring stud and a conductive connecting plate, wherein a middle shaft is arranged at the bottom of the support, the support is rotatably and movably arranged on the base through the middle shaft, a first worm wheel is arranged on the middle shaft, the first worm is rotatably and movably arranged on the base and meshed with the first worm wheel, a first twisting head is arranged at one end part of the first worm, support shafts are respectively arranged at two side parts of the shell, the shell is rotatably and movably arranged on the support through the support shafts, a second worm wheel is arranged on the support shaft at one side part of the shell, the second worm is rotatably and movably arranged on the support, the second worm is meshed with the second worm wheel, a second twisting head is arranged at one end part of the second worm, the iron core is fixedly installed in the shell, the first winding coil is wound on the outer side of the iron core, the paired second winding coils are wound on the outer side of the iron core, the first wiring studs and the second wiring studs are fixedly installed on the shell respectively, two ends of the first winding coil are electrically connected with the first wiring studs respectively, two ends of the paired second winding coil are electrically connected with the second wiring studs respectively, and the second wiring studs at one end of the paired second winding coil are electrically connected with the first wiring studs at two ends of the first winding coil through the conductive connecting plate respectively.
The coil winding device is characterized by further comprising nuts, clamping grooves are formed in two end portions of the conductive connecting plate respectively, the conductive connecting plate is clamped on the first wiring stud and the second wiring stud at one end of the second winding coil through the clamping grooves, and the nuts are arranged on the first wiring stud and the second wiring stud in a rotating mode respectively and are pressed on the conductive connecting plate.
The utility model adopts the beneficial effect that above-mentioned technical solution can reach is:
1. when the current transformer with the adjustable transformation ratio is used, the second wiring studs at the other end of the paired second winding coils or the first wiring studs at the two ends of the first winding coils are electrically connected with measuring instruments such as an ammeter, so that two measuring results with different transformation ratios are obtained, the adjustment of the measurement transformation ratio of the current transformer is realized, and different measuring requirements are well met.
2. Through rotating first knob head to under the interact of first worm and first worm wheel, can drive the support and rotate, through rotating second knob head, and under the interact of second worm and second worm wheel, can adjust the every single move angle of casing, thereby satisfied not equidirectional cable and worn to draw the requirement well, reduced the buckling of cable, labour saving and time saving.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1 at A;
fig. 3 is a partially enlarged schematic view of a portion B in fig. 1.
Detailed Description
As shown in fig. 1, 2 and 3, the ratio-variable adjustable current transformer includes a housing 1, an iron core 2, a first winding coil 3, a pair of second winding coils 4, a base 5, a bracket 6, a first worm 7, a second worm 8, a first wiring stud 9, a second wiring stud (10 a, 10 b), a conductive connecting plate 11 and a nut 12, wherein a central shaft 13 is disposed at the bottom of the bracket 6, the bracket 6 is rotatably and movably mounted on the base 5 through the central shaft 13, a first worm wheel 14 is disposed on the central shaft 13, the first worm 7 is rotatably and movably mounted on the base 5, the first worm 7 is engaged with the first worm wheel 14, and a first rotary head 15 is disposed at one end of the first worm 7. A support shaft 16 is provided on both sides of the housing 1, the housing 1 is rotatably and movably mounted on the bracket 6 via the support shaft 16, a second worm wheel 17 is provided on the support shaft 16 on one side of the housing 1, the second worm 8 is rotatably and movably mounted on the bracket 6, the second worm 8 meshes with the second worm wheel 17, and a second torque head 18 is provided on one end of the second worm 8. The iron core 2 is fixedly installed in the shell 1, the first winding coil 3 is wound on the outer side of the iron core 2, the paired second winding coils 4 are wound on the outer side of the iron core 2, the first wiring studs 9 and the second wiring studs (10 a and 10 b) are respectively and fixedly installed on the shell 1, two end portions of the first winding coil 3 are respectively and electrically connected with the first wiring studs 9, two end portions of the paired second winding coil 4 are respectively and electrically connected with the second wiring studs (10 a and 10 b), and the second wiring studs 10a at one end of the paired second winding coil 4 are respectively and electrically connected with the first wiring studs 9 at two ends of the first winding coil 3 through the conductive connecting plate 11 and are electrically connected in the following modes: the two ends of the conductive connecting plate 11 are respectively provided with a clamping groove 19, the conductive connecting plate 11 is clamped on the first wiring stud 9 and the second wiring stud 10a at one end of the second winding coil 4 through the clamping grooves 19, and the nuts 12 are respectively screwed on the first wiring stud 9 and the second wiring stud 10a and are pressed on the conductive connecting plate 11.
When the current transformer with adjustable transformation ratio is used, the second wiring studs 10b at the other end of the paired second winding coils 4 or the first wiring studs 9 at the two ends of the first winding coils 3 are electrically connected with measuring instruments such as an ammeter, so that two measuring results with different transformation ratios are obtained, and the adjustment of the transformation ratio of the current transformer is realized. Through rotating first knob head 15 to under the interact of first worm 7 and first worm wheel 14, can drive support 6 and rotate, through rotating second knob head 18, and under the interact of second worm 8 and second worm wheel 17, can adjust the every single move angle of casing 1, thereby satisfy the cable of equidirectional cable and wear to draw the requirement well, reduce the buckling of cable.
Claims (2)
1. Current transformer with adjustable transformation ratio, its characterized in that: the winding machine comprises a shell, an iron core, a first winding coil, a paired second winding coil, a base, a support, a first worm, a second worm, a first wiring stud, a second wiring stud and a conductive connecting plate, wherein a middle shaft is arranged at the bottom of the support, the support is rotatably and movably arranged on the base through the middle shaft, a first worm wheel is arranged on the middle shaft, the first worm is rotatably and movably arranged on the base and meshed with the first worm wheel, a first twisting head is arranged at one end part of the first worm, fulcrum shafts are respectively arranged at two side parts of the shell, the shell is rotatably and movably arranged on the support through the fulcrum shafts, a second worm wheel is arranged on the fulcrum shaft at one side part of the shell, the second worm is rotatably and movably arranged on the support, the second worm is meshed with the second worm wheel, a second twisting head is arranged at one end part of the second worm, the iron core is fixedly installed in the shell, the first winding coil is wound on the outer side of the iron core, the paired second winding coils are wound on the outer side of the iron core, the first wiring studs and the second wiring studs are fixedly installed on the shell respectively, two ends of the first winding coil are electrically connected with the first wiring studs respectively, two ends of the paired second winding coil are electrically connected with the second wiring studs respectively, and the second wiring studs at one end of the paired second winding coil are electrically connected with the first wiring studs at two ends of the first winding coil through the conductive connecting plate respectively.
2. The ratio-adjustable current transformer according to claim 1, wherein: the coil winding device is characterized by further comprising nuts, clamping grooves are formed in two end portions of the conductive connecting plate respectively, the conductive connecting plate is clamped on the first wiring stud and the second wiring stud at one end of the second winding coil through the clamping grooves, and the nuts are arranged on the first wiring stud and the second wiring stud in a rotating mode respectively and are pressed on the conductive connecting plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920916043.2U CN210015779U (en) | 2019-06-18 | 2019-06-18 | Current transformer with adjustable transformation ratio |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920916043.2U CN210015779U (en) | 2019-06-18 | 2019-06-18 | Current transformer with adjustable transformation ratio |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210015779U true CN210015779U (en) | 2020-02-04 |
Family
ID=69319155
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920916043.2U Active CN210015779U (en) | 2019-06-18 | 2019-06-18 | Current transformer with adjustable transformation ratio |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210015779U (en) |
-
2019
- 2019-06-18 CN CN201920916043.2U patent/CN210015779U/en active Active
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