Intelligent high-voltage zero sequence current mutual inductor having high clamping strength
A zero-sequence current and intelligent technology, applied in the field of electric power, can solve the problems such as the limitation of the application and popularization of zero-sequence current transformers, and achieve the effects of reasonable center of gravity distribution, vibration reduction, and labor-saving operation
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Embodiment 1)
[0021] This embodiment is an intelligent high-voltage zero-sequence current transformer with high clamping strength, see Figure 1 to Figure 8 As shown, it includes a base pipe 1 , a core pipe 2 , a crimping piece 3 , a current transformer 7 and a set of pressing claw assemblies 9 .
[0022] In this embodiment, the base pipe 1, the core pipe 2, the crimping member 3 and a set of pressing jaw assemblies 9 are all made of insulating materials.
[0023] The inner peripheral wall of the base pipe is provided with a plurality of clamping bosses 11, and the inner wall of each clamping boss is provided with arc-shaped grooves 111, and each wire-holding boss and arc-shaped grooves extend axially along the base tube. The inner peripheral wall of the base pipe is also provided with four positioning slide grooves 12 along the axial direction of the base pipe.
[0024] The core tube and the base tube are concentrically arranged, and the core tube is located in the lumen of the base tube;...
Embodiment 2)
[0040] This embodiment is basically the same as Embodiment 1, the difference is: see Figure 9 and Figure 10 As shown, the base pipe 1 is provided with a mounting screw hole 18 that penetrates the wall of the clamping boss 11 along the radial direction of the base pipe; a temperature sensing device 8 is fixed in the mounting screw hole;
[0041] The temperature sensing device includes a metal housing 81 made of metal material with a containing groove 811, a temperature sensor 82 arranged in the containing groove, a spring 83 for crimping the temperature sensor on the bottom wall of the containing groove, Coil plug 84 for limit spring;
[0042] One end 812 of the metal shell close to the central axis of the base tube is provided with a heat conduction boss 813 used as a puncture, and one end 814 of the metal shell away from the central axis of the base tube is provided with an inner hexagonal screw groove 815; There is an external thread 816 adapted to the mounting screw hol...
Embodiment 3)
[0051] This embodiment is basically the same as Embodiment 1, the difference is: see Figure 11 to Figure 12 As shown, in this embodiment, the annular inductive induction body is sleeved and fixed on the outer peripheral wall of the base tube; the outer peripheral wall of the base tube is provided with a wiring hole 13 that penetrates the tube wall in the radial direction; the inner wall of the base tube, the outer wall of the core tube, A plurality of accommodating cavities 73 are formed by clipping between the clamping bosses, supporting convex plates, and pressing jaws, and the intelligent control modules are arranged in the accommodating cavities; the electrical connection wires between the ring sensing body and the intelligent control modules pass through the wiring holes. This structure can make full use of the space and is conducive to the overall small size and integration.
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