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Current Transformers for Power SwitchgearThe Power Industry uses Pearson Current Transformers to measure transients in switching gear and the observation of harmonics and phase relationships on power lines. The testing of circuit breakers for power protection is also a typical application. Pearson Electronics enjoys close relationships with most of the power analyzer manufactures and provides current transformers for use with their equipment.

Pearson Current Transformers can measure 60 Hz applications with a 1% accuracy provided the 3 dB cutoff point is 6Hz or less. A typical model for this application would have a transfer impedance of 0.1 V/A, or less. Custom current transformer designs with a 1.0 V/A transfer impedance are also available to measure small currents at 60 Hz.

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