... three-phase ac voltage data, current data, active power, reactive power, power factor, zero sequence current, zero sequence voltage;2. 3-channel ... Input protection: Light coupling isolation;Rated Input: DC 12~48V;Scanning mode: Interrupt scanning;Counting Frequency: 10KHz; ... Input protection: Light coupling isolation; Rated Input: DC 12~48V5. Switch Signal Onput Channel number: 3-channel; Contact ...