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8.4
Protection (ANSI)
"ANSI Code" related Protection Functions
Protection
related ANSI #
Generator:
Voltage / frequency
59 / 27 / 81O / 81U
Overload, reverse/reduced power
32 / 32R / 32F
Unbalanced load
46
Synch Check
25
Instantaneous overcurrent
50
Time-overcurrent (IEC 255 compliant)
51 / 51 V
Ground fault (measured ground current)
50G
Power factor
55
Rotation field
Engine:
Overspeed / underspeed
12 / 14
Speed / frequency mismatch
D+ auxiliary excitation failure
Cylinder temperature
Mains:
Voltage / frequency
59 / 27 / 81O /
81U /25
Phase shift / rotation field / ROCOF (df/dt)
78
861
easYgen-3000XT Series
B37574
8 Technical Specifications
8.4 Protection (ANSI)
Released