Generator protection functions, Engine rpm -9, Engine run time -9 – Basler Electric DGC-2020 User Manual
Page 33: Maintenance timer -9, Fuel level -9, Generator protection functions -9, Overvoltage (59) and undervoltage (27) -9, Underfrequency (81u) and overfrequency (81o) -9, Reverse power (32) -9
Engine RPM
Metering Range ................................ 0 to 4,500 rpm
Accuracy
* ......................................... ±2% of actual indication or ±2 rpm
Display Resolution ............................ 2 rpm
* When engine speed is below 2% of full-scale, reported rpm is 0.
Engine Run Time
Engine run time is retained in nonvolatile memory.
Metering Range ................................ 0 to 99,999 hours
Update Interval ................................. 6 min
Accuracy ...........................................
±1% of actual indication or ±12 min
Display Resolution ............................ 1 minute
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 hours
Update Interval ................................. 6 min
Accuracy ...........................................
±1% or actual indication or ±12 min
Display Resolution ............................ 1 minute
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 1,000 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
NOTE
The maximum voltage that can be safely applied to the DGC-2020 is 576 volts.
The pickup range is higher so that when the low-line override is used, and the
scale factor is 0.5 or less, effective protection levels of 500 volts can be
reached with a scale factor of 0.5.
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% of Genset kW Rating
Pickup Increment .............................. 0.1%
Hysteresis Range ............................. 1 to 10% of Genset kW Rating
Hysteresis Increment ........................ 0.1%
Activation Delay Range .................... 0 to 30 s
Activation Delay Increment ............... 0.1 s
9400200990 Rev X
DGC-2020 General Information
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