Jiangyin Spark Flexible Rogowski coil with a matched integrator, delivering a standard 0.333 V AC output at rated current. Typical ±1% accuracy, 0.2% linearity and low phase error support reliable measurement over a wide dynamic range. The air-core clip-around coil fits irregular conductors without de-energizing the circuit and provides galvanic isolation. Coil length, window size, current rating and output scaling are customized to the application.