This device is based on a 32-bit microcontroller as the core, supplemented by industrial grade peripheral chips, precision small transformers, small specialized relays, and scientific algorithms, ensuring reliable and sensitive protection and high measurement accuracy. Adopting various anti-interference measures, the device has extremely high anti-interference ability. In terms of device design, standardized and modular hardware design, high-precision A/D conversion, and dedicated power module are adopted.

Leakage protection delay: The delay level difference of each level is 250-300ms

Low voltage protection action time: 1s, 3s, or 5s

Scope of application: 380V, 660V, 1140V low-voltage power grid with neutral point not directly grounded