1-8 DGC-2020 General Information 9400200990 Rev I
Generator Protection Functions
Overvoltage (59) and Undervoltage (27)
Pickup Range: 70 to 576 Vac
Pickup Increment: 1 Vac
Inhibit Frequency Range: 20 to 400 Hz (27 function only)
Activation Delay Range: 0 to 30 s
Activation Delay Increment: 0.1 s
Underfrequency (81U) and Overfrequency (81O)
Pickup Range: 45 to 66 Hz (50/60 Hz nominal)
360 to 440 Hz (400 Hz nominal)
Pickup Increment: 0.1 Hz (50/60 Hz nominal)
0.1 Hz (400 Hz nominal)
Activation Delay Range: 0 to 30 s
Activation Delay Increment: 0.1 s
Inhibit Voltage Range: 70 to 576 Vac (81U function only)
Reverse Power (32)
Pickup Range: -50 to 5%
Pickup Increment: 0.1%
Hysteresis Range: 1 to 10%
Hysteresis Increment: 0.1%
Activation Delay Range: 0 to 30 s
Activation Delay Increment: 0.1 s
Loss of Excitation (40Q)
Pickup Range: -150 to 0%
Pickup Increment: 0.1%
Hysteresis Range: 1 to 10%
Hysteresis Increment: 0.1%
Activation Delay Range: 0 to 30 s
Activation Delay Increment: 0.1 s
Overcurrent (51) (Optional)
Pickup Range: 0.18 to 1.18 Aac (1 A current sensing)
0.9 to 7.75 Aac (5 A current sensing)
Time Dial Range: 0 to 30 s (fixed time curve)
0 to 9.9 (inverse curve time multiplier)
Time Dial Increment: 0.1
Inverse Time Curves: See Appendix A, Time Overcurrent Characteristic Curves
Phase Imbalance (47) (Optional)
Pickup Range: 5 to 100 Vac
Pickup Increment: 1 Vac
Activation Delay Range: 0 to 30 s
Activation Delay Increment: 0.1 s
Logic Timers
Range: 0 to 10 s
Increment: 0.1 s
Accuracy: ±15 ms
Communication Interface
USB
Specification Compatibility: USB 2.0
Data Transfer Speed: 9600 baud
Connector Type: Mini-B jack
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