Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Opening and closing type zero sequence current mutual inductor

A zero-sequence current, open and close technology, applied in the field of transformers, can solve the problems of small switch cabinets that cannot be installed, many consumables, and heavy workload, and achieves high economic practicability and promotion value, easy installation and use, and consumables. small amount of effect

Inactive Publication Date: 2013-05-01
HANGZHOU DAHU TRANSFORMER
View PDF5 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the zero-sequence current transformers used in the zero-sequence overcurrent protection of high-voltage three-phase generators and motors in power systems and the grounding protection of small grounding current systems are all closed products. Small switch cabinets cannot be installed, and it is more troublesome to install zero-sequence protection on cables that have been connected at both ends. It is a lot of work and difficult to pull out one end of the cable to pass through the transformer.

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 more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Opening and closing type zero sequence current mutual inductor
  • Opening and closing type zero sequence current mutual inductor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Split type zero-sequence current transformers, such as Figure 1 to Figure 2 As shown, it includes a base 1 and a casting body arranged on the base 1. The casting body is provided with an annular iron core. The casting body includes a first casting body 2 on the upper part and a second casting body 3 on the lower part. The first casting body The shapes of the body 2 and the second casting body 3 are both semicircular; the first casting body 2 and the second casting body 3 form a ring shape after docking, and the outer circumference of the first casting body 2 and the second casting body 3 A clamping hoop 4 is arranged on the surface, and the clamping hoop 4 connects the first casting body 2 and the second casting body 3 into one body.

[0018] The clamping hoop 4 is a bent steel bar. Two reinforcing plates 5 are arranged at both ends of the steel bar respectively. The reinforcing plates 5 are perpendicular to the outer circumferential surface of the first pouring body 2...

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

PropertyMeasurementUnit
diameteraaaaaaaaaa
diameteraaaaaaaaaa
Login to View More

Abstract

The invention relates to a mutual inductor, which discloses an opening and closing type zero sequence current mutual inductor. The opening and closing type zero sequence current mutual inductor comprises a base and a pouring body arranged on the base, wherein the inside of the pouring body is provided with an annular iron core; the pouring body comprises a first pouring body and a second pouring body, wherein the first pouring body is positioned on the upper part; the second pouring body is positioned on the lower part; the first pouring body and the second pouring body are semicircular; the first pouring body and the second pouring body are subjected to butt joint to form a circular ring shape; the outer circumference surfaces of the first pouring body and the second pouring body are provided with a clamping hoop; and the first pouring body and the second pouring body are connected into a whole by the clamping hoops. The opening and closing type zero sequence current mutual inductor disclosed by the invention has the advantages of compact structure, small size, small consumable use amount, light weight, convenience in installation and use and higher economic practicality and popularization value.

Description

technical field [0001] The invention relates to a transformer, in particular to a split type zero-sequence current transformer. Background technique [0002] At present, the zero-sequence current transformers used in the zero-sequence overcurrent protection of high-voltage three-phase generators and motors in power systems and the grounding protection of small grounding current systems are all closed products. Small switch cabinets cannot be installed in, and it is more troublesome to install zero-sequence protection for cables that have been connected at both ends. It is a lot of work and difficult to pull out one end of the cable to pass through the transformer. Contents of the invention [0003] Aiming at the defects in the prior art, the invention provides a split type zero-sequence current transformer with compact structure, small volume, less consumption of consumables, light weight and more convenient installation and use. [0004] In order to solve the above techn...

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
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H01F38/30H01F27/24H01F27/26
Inventor 刘铖陈建孟郑展鹏李毓俊李小桥
Owner HANGZHOU DAHU TRANSFORMER
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com