Schweitzer Engineering SEL-351P - Synchronism-Check Elements; Timers; Under- and Overfrequency Elements; Under- and Overvoltage Elements

Specifications
SEL-351P Quick-Start Installation and User's Guide (Portuguese) 77
0.05 - 1.00, 0.01 steps (IEC)
0.10 - 2.00, 0.01 steps (recloser curves)
Curve Timing Accuracy:
±1.50 cycles and ±4% of curve time for current
between 2 and 30 multiples of pickup
Under- and Overvoltage Elements
Pickup Ranges: 0.0 - 150.0 V, 0.1 V steps (various elements)
0.0 - 260.0 V, 0.1 V steps (phase-to-phase
elements)
Steady-State Pickup Accuracy:
±1 V and ±5% of setting
Transient Overreach:
±5% of pickup
Synchronism-Check Elements
Slip Frequency Pickup Range: 0.005 - 0.500 Hz, 0.001 Hz steps
Slip Frequency Pickup Accuracy:
±0.003 Hz
Phase Angle Range: 0 - 80°, 1° steps
Phase Angle Accuracy:
±2°
Under- and Overfrequency Elements
Pickup Range: 40.10 - 65.00 Hz, 0.01 Hz steps
Steady-State plus Transient Overshoot:
±0.01 Hz
Time Delay: 2.00 - 16,000.00 cycles, 0.25-cycle steps
Timer Accuracy:
±0.25 cycle and ±0.1% of setting
Timers
Pickup Ranges:
0.00 - 999,999.00 cycles, 0.25-cycle steps
(reclosing relay and some programmable timers)
0.00 - 16,000.00 cycles, 0.25-cycle steps (some
programmable and other various timers)
Pickup and dropout accuracy for all timers:
±0.25 cycle and ±0.1% of setting