GYID AC/DC Insulation Monitor

Wide Voltage Monitoring Range: Designed for real-time monitoring of insulation resistance to ground in 0–1000 VDC ungrounded DC systems and 0–750 VAC ungrounded AC systems. Capable of detecting insulation faults between equipment enclosures and ground, as well as between high-voltage components and enclosures.

DC System Application: Independently measures the insulation resistance to ground for both positive and negative poles in DC systems. Specifically for electric vehicle (EV) applications, it reliably monitors insulation resistance under strong interference or complex driving conditions (e.g., acceleration, deceleration, braking, and energy recovery).

AC System Application: Suppresses interference from high-frequency voltage harmonics to accurately measure the total insulation resistance to ground across the entire AC system.