| ■ Directional over current and earth fault protection • Current Setting Range 10-1280A • Setting Resolution 1A ■ Inverse Time Protection • 3 x Forward Direction Elements for each Trip in the Sequence independently settable for both over current and earth fault. • 3 x Reverse Direction Elements for each Trip in the Sequence independently settable for both over current and earth fault. • 4 xIEC255 Curves • 8 xANSI Curves • 2xUserDefined Curves ■ High set Instantaneous element ■ Definite Time Protection • 0-120 seconds • Time Resolution 0.01 seconds ■ Directional Sensitive Earth Fault Protection • Current Setting Range 4-80A • Setting Resolution 1A • DefiniteTime 0-120 seconds • Time Resolution 0.01 seconds ■ Under Voltage Protection • Phase undervoltage balanced element (UV1) - 3 phase load shedding - Multiplier setting range: 0.6-1 of system voltage - Multipliersetting resolution: 0.01 - Trip time range: 0-180 sec - Trip time setting resolution: 0.01 sec • Phase-to-Phase Undervoltage Element (UV2) - Multiplier setting range: 0.6-1 of system voltage - Multipliersetting resolution: 0.01 - Trip time range: 0-180 sec - Trip time setting resolution: 0.01 sec • Loss ofSupply(UV3) - Trip time range: 0-180 sec - Trip time setting resolution: 0.01 sec - Reclose time: 0-180 sec - Reclose time resolution: 0.01 sec ■ Under Frequency Protection • Pickup Range: 45-50Hz (50Hz system), 55-60Hz(60Hzsystem) • Frequency settings resolution: 0.01Hz • Trip time range: 0-120 sec • Trip time setting resolution: 0.01 sec ■ Voltage reclose control with automatic back feed restoration Provides loop automation functionality. |