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

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