GE L90 Instruction Manual page 392

GROUPED ELEMENTS
The distance zones of the L90 are identical to that of the D60 Line Distance Relay.
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)
5
 PHASE DISTANCE Z1

5-206
Figure 5-100: Memory voltage logic
PHS DIST Z1

FUNCTION: Disabled
PHS DIST Z1 DIR:

Forward
PHS DIST Z1

SHAPE: Mho
PHS DIST Z1 XFMR VOL

CONNECTION: None
PHS DIST Z1 XFMR CUR

CONNECTION: None
PHS DIST Z1

REACH: 2.00 Ω
PHS DIST Z1

RCA: 85°
PHS DIST Z1 REV

REACH: 2.00 Ω
PHS DIST Z1 REV

REACH RCA: 85°
PHS DIST Z1

COMP LIMIT: 90°
PHS DIST Z1

DIR RCA: 85°
PHS DIST Z1

DIR COMP LIMIT: 90°
PHS DIST Z1 QUAD

RGT BLD: 10.00 Ω
Range: Disabled, Enabled
Range: Forward, Reverse, Non-directional
Range: Mho, Quad
Range: None, Dy1, Dy3, Dy5, Dy7, Dy9, Dy11, Yd1,
Yd3, Yd5, Yd7, Yd9, Yd11
Range: None, Dy1, Dy3, Dy5, Dy7, Dy9, Dy11, Yd1,
Yd3, Yd5, Yd7, Yd9, Yd11
Range: 0.02 to 500.00 ohms in steps of 0.01
Range: 30 to 90° in steps of 1
Range: 0.02 to 500.00 ohms in steps of 0.01
Range: 30 to 90° in steps of 1
Range: 30 to 90° in steps of 1
Range: 30 to 90° in steps of 1
Range: 30 to 90° in steps of 1
Range: 0.02 to 500.00 ohms in steps of 0.01
L90 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL
CHAPTER 5: SETTINGS