Monitored Data - ABB REL650 series Technical Manual

1MRK 506 335-UUS A
6.5.6
6.5.7
Technical manual

Monitored data

Table 53: ZDNRDIR (21D) Monitored data
Name Type
Aph_R REAL
Aph_X REAL
Bph_R REAL
Bph_X REAL
Cph_R REAL
Cph_X REAL
A_Dir INTEGER
B_Dir INTEGER
C_Dir INTEGER
Operation principle
The evaluation of the directionality takes place in directional element ZDNRDIR for the
quadrilateral and mho characteristic distance protections ZQDPDIS and ZMOPDIS.
Equation 35 and equation
for phase-to-ground fault and phase-to-phase fault respectively.
×
0.85 V A
- <
AngDir Ang
EQUATION1618 V1 EN
×
0.85 V AB
- <
AngDir Ang
EQUATION1620 V1 EN
Where:
AngDir Setting for the lower boundary of the forward directional characteristic, by default set to 15
(= -15 degrees)
AngNegRes Setting for the upper boundary of the forward directional characteristic, by default set to
115 degrees, see figure
characteristics.
Table continues on next page
Values (Range)
-
-
-
-
-
-
0=No direction
1=Forward
2=Reverse
0=No direction
1=Forward
2=Reverse
0=No direction
1=Forward
2=Reverse
36 are used to classify that the fault is in the forward direction
+ ×
1 0.15 V AM 1
<
AngNeg
IA
+ ×
1 0.15 V ABM 1
<
AngNeg
IAB
78 for mho characteristics and figure
Impedance protection
Unit Description
Ohm Resistance in phase A
Ohm Reactance in phase A
Ohm Resistance in phase B
Ohm Reactance in phase B
Ohm Resistance in phase C
Ohm Reactance in phase C
- Direction in phase A
- Direction in phase B
- Direction in phase C
Re s
Re s
79 for quadrilateral
Section 6
(Equation 35)
(Equation 36)
167