5-226 L90 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL
GROUPED ELEMENTS CHAPTER 5: SETTINGS
5
Figure 5-112: Memory voltage logic
The figure shows a condition for the L90 only that forces distance to be self-polarized to assure correct distance operation
when L90 relays are synchronizing to each other.
5.7.5.2 Phase distance (ANSI 21P, IEC PDIS)
SETTINGS GROUPED ELEMENTS SETTING GROUP 1(6) DISTANCE PHASE DISTANCE Z1(Z5)
The distance zones of the L90 are identical to that of the D60 Line Distance Relay.
PHASE DISTANCE Z1
PHS DIST Z1
FUNCTION: Disabled
Range: Disabled, Enabled
PHS DIST Z1 DIR:
Forward
Range: Forward, Reverse, Non-directional
PHS DIST Z1
SHAPE: Mho
Range: Mho, Quad
PHS DIST Z1 XFMR VOL
CONNECTION: None
Range: None, Dy1, Dy3, Dy5, Dy7, Dy9, Dy11, Yd1,
Yd3, Yd5, Yd7, Yd9, Yd11
PHS DIST Z1 XFMR CUR
CONNECTION: None
Range: None, Dy1, Dy3, Dy5, Dy7, Dy9, Dy11, Yd1,
Yd3, Yd5, Yd7, Yd9, Yd11
PHS DIST Z1
REACH: 2.00 Ω
Range: 0.02 to 500.00 ohms in steps of 0.01
PHS DIST Z1
RCA: 85°
Range: 30 to 90° in steps of 1
PHS DIST Z1 REV
REACH: 2.00 Ω
Range: 0.02 to 500.00 ohms in steps of 0.01
PHS DIST Z1 REV
REACH RCA: 85°
Range: 30 to 90° in steps of 1
PHS DIST Z1
COMP LIMIT: 90°
Range: 30 to 90° in steps of 1
PHS DIST Z1
DIR RCA: 85°
Range: 30 to 90° in steps of 1
PHS DIST Z1
DIR COMP LIMIT: 90°
Range: 30 to 90° in steps of 1
PHS DIST Z1 QUAD
RGT BLD: 10.00 Ω
Range: 0.02 to 500.00 ohms in steps of 0.01
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