发明名称 |
PRECISION, TEMPERATURE-COMPENSATED, SHIELDED CURRENT MEASUREMENT DEVICE |
摘要 |
A current measurement device using a Rogowski coil having a generally toroidal-shaped core with a first winding in one direction and a second winding forming a return loop. The coil is positioned within a two-piece electrostatic shield. A first piece of the electrostatic shield is a partially donut-shaped member having a U-shaped cross-section. The coil is positioned in the donut-shaped member and covered by an encapsulating material. The first piece includes a slit through the cross-section thereof to prevent an electrical loop around the perimeter thereof. The second piece of the electrostatic shield is flat and has a donut-shaped configuration. The second piece is configured with inside and outside peripheral edges such that only one or none of the inside/outside edges contact the first piece. The second piece also has a cross-sectional slit which is in registry with the slit in the first piece.
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申请公布号 |
US2008048646(A1) |
申请公布日期 |
2008.02.28 |
申请号 |
US20070681620 |
申请日期 |
2007.03.02 |
申请人 |
SCHWEITZER ENGINEERING LABORATORIES, INC. |
发明人 |
WILKERSON DONOVAN E.;SKENDZIC VESELIN;KESLER JAMES R. |
分类号 |
G01R15/18;H05K9/00 |
主分类号 |
G01R15/18 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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