Invention Grant
US09411021B2 Methods and apparatus for sensing ground leakage and automated self testing thereof 有权
用于检测地面泄漏及其自动化自检的方法和装置

Methods and apparatus for sensing ground leakage and automated self testing thereof
Abstract:
Methods and apparatus provide for: measuring leakage current from a source of AC power, which provides power to at least one load circuit; and comparing the measured leakage current values against one or more predetermined thresholds to establish status therefor; and automatically performing self tests to determine whether the leakage current sensing and comparing operations are operative.
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