beautypg.com
Underfrequency (81U) and Overfrequency (81O) .......................................................................... 1-9
Reverse Power (32) ........................................................................................................................ 1-9
Loss of Excitation (40Q) ............................................................................................................... 1-10
Overcurrent (51) (Optional) ........................................................................................................... 1-10
Phase Imbalance (47) (Optional) .................................................................................................. 1-10
ROCOF (Rate of Change of Frequency) (81) (Optional) .............................................................. 1-10
Vector Shift (78) (Optional) ........................................................................................................... 1-10
Logic Timers ..................................................................................................................................... 1-10
Communication Interface ................................................................................................................. 1-10
USB ............................................................................................................................................... 1-10
External Dial-Out Modem (Optional)............................................................................................. 1-10
RS-485 (Optional) ......................................................................................................................... 1-10
RDP-110 ....................................................................................................................................... 1-11
CAN .............................................................................................................................................. 1-11
Real-Time Clock ............................................................................................................................... 1-11
Clock Holdup................................................................................................................................. 1-11
LCD Heater ....................................................................................................................................... 1-12
Type Tests ........................................................................................................................................ 1-12
Shock ............................................................................................................................................ 1-12
Vibration ........................................................................................................................................ 1-12
Radio Interference ........................................................................................................................ 1-12
HALT (Highly Accelerated Life Testing) ....................................................................................... 1-12
Ignition System ............................................................................................................................. 1-12
Environment ..................................................................................................................................... 1-12
UL Recognition ................................................................................................................................. 1-12
CSA Certification .............................................................................................................................. 1-13
NFPA Compliance ............................................................................................................................ 1-13
CE Compliance................................................................................................................................. 1-13
GOST-R Certification ....................................................................................................................... 1-13
Physical ............................................................................................................................................ 1-13
Figures
Figure 1-1. DGC-2020 Style Chart for Hardware Version 3 ...................................................................... 1-4
Figure 1-2. DGC-2020 Style Chart for Hardware Versions 1 and 2 .......................................................... 1-4
ii
DGC-2020 General Information
9400200990 Rev X
