1.13
Date Code 20060320 Instruction Manual SEL-311C Relay
Introduction and Specifications
Specifications
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: ± 4°
Definite-Time Over- or Underfrequency Elements (81)
Pickup Range: 41–65 Hz, 0.01 Hz steps
Pickup Time: 32 ms at 60 Hz (Max)
Time Delays: 2–16,000 cycles, 0.25-cycle steps
Maximum Definite-Time
Delay Accuracy: ±0.25 cycles, ±1% of setting at 60 Hz
Steady-State plus
Transient Overshoot: ±0.01 Hz
Supervisory 27: 20–150 V, ±5%, ± 0.1 V
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