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