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Current sensor arrangement

A current sensor and inductor technology, applied in the direction of inductors, fixed inductors, and only current measurement, can solve the problem that Rogowski coils cannot be used with multi-phase conductor systems, and achieve the effect of reducing the effect

Inactive Publication Date: 2016-04-20
PHOENIX CONTACT GMBH & CO KG
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  • Abstract
  • Description
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Problems solved by technology

Furthermore, due to their toroidal form, Rogowski coils cannot be used in multi-phase conductor systems arranged planarly on circuit boards

Method used

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Embodiment approach

[0100] According to an implementation manner, the short circuit detection device can also realize identification of a short circuit to ground. By properly designing the detection means, any current value can be defined as a signal threshold for the short circuit identification. In this way, even low short-circuit currents, such as 10 to 20 times the rated current of the drive or motor, can be detected and a corresponding auxiliary short-circuit generated. In this way, existing short-circuit devices that are generally classified as having reached a critical point of performance (especially at low short-circuit currents) can still perform fully (in the case of rated short-circuit).

[0101] According to an embodiment, the measuring device, eg the current sensor arrangement, may be used to measure short-circuit currents in a three-phase power system.

[0102] According to one embodiment, a Rogowski coil can be used as the basis for the current measurement and can be a compressed...

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Abstract

The invention relates to a current sensor arrangement comprising a measuring inductor, said measuring inductor having the following features: a first planar measuring coil (105) having first windings (106) arranged in a first plane; a second planar measuring coil (107) having second windings (108) arranged in a second plane; and a winding-free connecting portion (109) which electrically connects the first planar measuring coil (105) to the second planar measuring coil (107).

Description

technical field [0001] The invention relates to the field of induction current measurement. Background technique [0002] In multi-phase conductor systems, such as three-phase conductor systems, current measurements are required, for example for short-circuit detection and short-circuit protection of electrical loads such as motors or heating equipment connected to the multi-phase conductor system. [0003] For short-circuit protection, the IEC60947-4-1 standard divides it into two categories. In the first category, contactors or semiconductor switching elements are allowed, for example, to be destroyed if they do not pose a fire hazard or form a hazard of open live parts. However, in the second category, downstream equipment needs to retain its functionality and thus may require user intervention, such as disconnecting the connection point with a simple tool. Mechanical switching devices such as contactors are often classified into the second category, while semiconductor...

Claims

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Application Information

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IPC IPC(8): G01R15/18G01R15/20
CPCG01R15/181H01F2017/0073G01R19/0092
Inventor 彼得·肖尔茨埃尔玛·沙佩尔
Owner PHOENIX CONTACT GMBH & CO KG
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