Maintenance timer, Fuel level, Generator protection functions – Winco DGC-2020 User Manual
Page 20: Overvoltage (59) and undervoltage (27), Underfrequency (81u) and overfrequency (81o), Reverse power (32), Loss of excitation (40q), Overcurrent (51) (optional), Phase imbalance (47) (optional), Maintenance timer -8
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1-8
DGC-2020 General Information
9400200990 Rev K
Maintenance Timer
Maintenance timer indicates the time remaining until genset service is due. Value is retained in
nonvolatile memory.
Metering Range:
0 to 5,000 h
Update Interval:
6 min
Accuracy:
1% or actual indication or 12 min
Display Resolution:
1/10 hour
Fuel Level
Metering Range:
0 to 100%
Accuracy:
2% (subject to accuracy of sender)
Display Resolution:
1.0%
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 7,200 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