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The paper discusses a method for calibrating AC clamp meters used for power and energy measurements, detailing a procedure that utilizes a standard transformer, resistors, and a lock-in amplifier. It analyzes the ratio error and phase displacement across a frequency range of up to 10 kHz, presenting measurement results for two clamp meters. The calibration methods are essential for ensuring accuracy in AC current measurements without interrupting the current circuit.
- Author
- manuel m ruiz
- Language
- EN