Provides intermittent path to ground for leakage current measurements. Operates from 30 to 600VAC. Features selectable ground fault cycling of 500ms or 2.3 seconds. Works with Model 2620 and other leakage current probes.The Artificial Neutral Model AN-1 is designed for ungrounded networks, providing an intermittent path to ground for leakage current measurements. The Model AN-1 operates from 30 to 600VAC.