Improved power zero-sequence current transformer
A zero-sequence current and transformer technology, applied in the field of electric power, can solve problems such as application and promotion restrictions, and achieve the effects of ensuring stable reliability, stable and reliable firm strength, and high firm strength
Active Publication Date: 2016-05-04
十堰市贝塔电子有限公司
View PDF5 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0003] Most of the existing zero-sequence current transformers are installed by means of flange installation or bonding. The installation location generally needs to be reserved, so its application and promotion are more restricted.
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0014] This embodiment is an improved power zero-sequence current transformer, see Figure 1 to Figure 6 As shown, it includes a base pipe 1 , a core pipe 2 , two sets of pressing jaw assemblies 3 , two flat nuts 4 and a current transformer 8 .
[0015] The inner peripheral wall of the base pipe is provided with three crimping bosses 11 along the axial direction of the base pipe, and the inner wall of each crimping boss is provided with an arc-shaped groove 111; the inner peripheral wall of the base pipe is also provided with four positioning slides along the axial direction of the substrate Slot 12; the core tube and the base tube are concentrically arranged and located in the base tube lumen; the outer peripheral wall of the core tube is provided with four supporting convex plates 21 protruding radially along the core tube, and the outer ends of each supporting convex plate are located at corresponding to a positioning chute, so that the core tube is supported and positioned...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses an improved power zero-sequence current transformer, which comprises a base tube, a core tube, two sets of press claw components, two flat nuts and a current transformer body, wherein the current transformer body sleeves the base tube; crimping bosses are arranged on the base tube; radial limiting slide holes are formed in the tube wall of the core tube; a stopping table is arranged on the inner circumference wall of the core tube; the two flat nuts are rotationally arranged in a tube cavity of the core tube, and are separately located at two sides of the stopping table; drive thread parts in each set of press claw components are located at one side, far away from the stopping table, of one corresponding flat nut; each flat nut comprises a fastening part and a flat thread part which is engaged with the drive thread parts of the press claws in the corresponding set of press claw components; the outer circumference wall of each flat nut is adjacent to the inner wall of the core tube in a sliding manner; one side end of each flat nut is adjacent to the stopping table in the sliding manner and the other side end is provided with the flat thread part; and each flat nut drives the flat thread part thereof to rotate in a reciprocating manner, so that corresponding one set of press claw components is driven. The improved power zero-sequence current transformer has an excellent anti-looseness effect.
Description
technical field [0001] The invention belongs to the technical field of electric power, and in particular relates to an improved electric zero-sequence current transformer. Background technique [0002] The basic principle of zero-sequence current protection is based on Kirchhoff's current law: the algebraic sum of the complex current flowing into any node in the circuit is equal to zero. When the line and electrical equipment are normal, the vector sum of the currents of each phase is equal to zero. Therefore, the secondary side winding of the zero-sequence current transformer has no signal output, and the actuator does not operate. When an electric shock or leakage fault occurs, the vector sum of the currents of each phase is not zero, and the fault current causes magnetic flux in the iron core of the zero-sequence current transformer, and the current generated by the zero-sequence current transformer is the zero-sequence current. When the protection mechanism receives the...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): H01F27/06H01F38/30H02G7/04F16L3/10
CPCF16L3/10H01F27/06H01F38/30H02G7/04
Inventor 胡小青
Owner 十堰市贝塔电子有限公司