FCI & DCU

HXD430 Fault Circuit Indicator

HXD430 is a type of FCI which is designed for underground applications. Each set of HXD430 contains 3 over-current sensors and 1 zero-sequence sensor. The over-current sensors clamp on each of three phase and zero-sequence sensor clamps on the cable (one sensor for all 3 phases). Over-current sensors can detect short-circuit fault and zero-sequence sensor can detect ground fault. All sensors provide local indication and remote alert (via Optical fiber). Also a display panel is offered to show line current and fault status.