GE UR Series Instruction Manual page 146

Line differential relay

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5.5 GROUPED ELEMENTS

The COMMON DISTANCE SETTINGS described earlier must be properly chosen for correct operation of the phase dis-

tance elements.

Ensure that the

VOLTAGE BANK

PHS DIST Z2 DIRECTION:

Zone2 is reversible. The forward direction by the

PHS DIST Z2 SHAPE:

This setting selects the shape of the phase distance function between the mho and quad characteristics. The two charac-

teristics and their possible variations are shown in the following figures.

PHASE VT SECONDARY VOLTAGE

menu) is set correctly to prevent improper operation of associated memory action.

PHS DIST Z2 RCA

DIR COMP LIMIT

Figure 5–22: MHO DISTANCE CHARACTERISTIC

DIR COMP LIMIT

Figure 5–23: QUAD DISTANCE CHARACTERISTIC

L90 Line Differential Relay

setting (see the

setting, whereas the reverse direction is shifted 180° from

DIR COMP LIMIT

837720A1.CDR

DIR COMP LIMIT

SYSTEM SETUP

837721A1.CDR

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