LS Rokowski coil series
I. Overview: Rogowski coil (Rockwell coil), also known as current measuring coil, differential current sensor, is a toroidal coil that is evenly wound on a non-ferromagnetic material. The output signal is the differential of current versus time. The input current can be truly restored by a circuit that integrates the output voltage signal.
2. Structure introduction: no ferromagnetic material, no hysteresis effect, almost zero phase error; no magnetic saturation image, so the measurement range can be from several amperes to hundreds of kiloamperes; the structure is simple, and measured There is no direct circuit connection between the currents; the response frequency bandwidth is 0.1 Hz-1 MHz. Compared with traditional transformers with iron core, Rockwell coils have wide measuring range, high precision, stable and reliable, and response frequency bandwidth. They also have measurement and relay protection functions, small size, light weight, safety and environmental protection requirements.
Based on the Rockwell coil, it has the characteristics of real-time measurement, fast response, no saturation, and almost no phase error. Therefore, it can be applied to relay protection, thyristor rectification, variable frequency speed regulation, resistance welding and other serious signal distortion. The occasion.
three. Electrical parameters:
à Input: 5A～100KA
à Output: 0~20mA 0~5V 0~10V (customer defined)
à Grade: 0.5 to 1%
à Frequency: 0~3MHZ
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