研究目的
To describe a new method to extend the current ranges from 10 mA to 100 A at frequencies from 50 Hz to 100 kHz using a binary inductive current divider and a set of current transformers.
研究成果
A coaxial 1-? shunt time constant standard has been successfully applied as a reference to extend the current range up to 100 A by calibrating a set of CTs in a step-up procedure and down to 10 mA using the BICD. This setup efficiently covers current ranges from 10 mA to 100 A at frequencies from 50 Hz to 100 kHz in only four steps, with level dependence influences evaluated to be less than 20 ppm.
研究不足
The level dependence influences of the CTs and shunts have been evaluated to be less than 20 ppm, indicating potential areas for optimization to reduce these influences further.
