1. Main performance index
Ø Voltage input nominal value: Phase voltage: AC 3.25V/, Zero sequence voltage: AC 6.5V/3;
Ø Current input nominal value: Phase current:AC 1V, Zero sequence current: AC 0.2V;
Ø Power consumption: ≤20VA(No communication module and backup power supply)
Ø Voltage measurement accuracy: phase voltage ≤0.5%(0.5 grade), Zero sequence voltage:0.5%(0.5 grad);
Ø Current measurement accuracy: Phase measurement≤0.5%(≤1.2In), Phase protection value≤3%(≤10In), Zero-sequence current 0.5 grad;
Ø Power measurement accuracy: active power, reactive power accuracy≤1%(1 grade);
Ø Power Accuracy: Active Power: 0.5S, Reactive Power:Level 2
Ø DC sampling accuracy: 0.5 grade;
Ø Frequency measurement accuracy: ≤±0.02Hz;
Ø Quick break protection inherent action time is not more than 20ms
2. Main Function
Ø Remote control, Telemetry, Remote communication
Ø Power management
Ø Non-interruption current protection
Ø Zero-sequence voltage protection
Ø Fault recording
Ø Maintenance debugging