发明授权
- 专利标题: Current transformer for measuring instruments
- 专利标题(中): 电流互感器用于测量仪器
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申请号: US484921申请日: 1983-04-14
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公开(公告)号: US4513274A公开(公告)日: 1985-04-23
- 发明人: Mathis Halder
- 申请人: Mathis Halder
- 申请人地址: CHX Zug
- 专利权人: LGZ Landis & Gyr Zug AG
- 当前专利权人: LGZ Landis & Gyr Zug AG
- 当前专利权人地址: CHX Zug
- 优先权: CHX2438/82 19820422
- 主分类号: G01R1/20
- IPC分类号: G01R1/20 ; G01R15/18 ; H01F27/42 ; H01F38/28 ; H01F38/32 ; H01F40/00
摘要:
The current transformer for instruments for measuring electric currents includes a magnetic core that has two cores and an inductive current divider with three parallel current paths. The current dividers form, together with cores, two current transformer stages whose magnetic fluxes mutually cancel one another. In a current transformer for AC currents having a DC component, the ratio of the ohmic resistances of the individual current paths is in direct relation to their transformation ratio.