formerly the arc length error for the insulation resistance instrument is defined by scale arc length. at present national standard determines that the percentage of indicated value expresses it.
绝缘电阻表以前是按标度尺弧长定义的弧长误差,现行国家标準规定以指示值的百分数表示。
problems about indicated value distortion of motor current are summarized, the causes are analyzed, and the solutions are proposed.