separate fault type dedicated earth-fault functions which need to be coordinated.
Other advantages of MFADPSDE include versatile applicability, good selectivity,
good sensitivity and easy setting principles.
Three instances (stages) of MFADPSDE are available.
4.2.9.7 Signals
MFADPSDE Input signals
Table 617: MFADPSDE Input signals
Name Type Default Description
IRES SIGNAL - Residual current
URES SIGNAL - Residual voltage
BLOCK BOOLEAN 0=False Block signal for acti-
vating the blocking
mode
RELEASE BOOLEAN 0=False External trigger to re-
lease neutral admit-
tance protection
RESET BOOLEAN 0=False External trigger to re-
set direction calcula-
tio
MFADPSDE Output signals
Table 618: MFADPSDE Output signals
Name Type Description
OPERATE BOOLEAN Operate
START BOOLEAN Start
BLK_EF BOOLEAN Block signal for EF to indicate
opposite direction peaks
INTR_EF BOOLEAN Intermittent earth-fault indi-
cation
PEAK_IND BOOLEAN Current transient detection
indication
FAULT_DIR Enum Detected fault direction
DIRECTION Enum Direction information
4.2.9.8 MFADPSDE Settings
Table 619: MFADPSDE Group settings (Basic)
Parameter
Values (Range) Unit Step Default Description
Directional mode
2=Forward
2=Forward Directional mode
Table continues on the next page
Protection functions 1MRS759142 F
580 REX640
Technical Manual
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