5-90 D30 Line Distance Relay GE Multilin5.5 GROUPED ELEMENTS 5 SETTINGS5The phase mho distance function uses a dynamic 100% memory-polarized mho characteristic with additional reactance,directional, and overcurrent supervising characteristics. When set to “Non-directional”, the mho function becomes an offsetmho with the reverse reach controlled independently from the forward reach, and all the directional characteristicsremoved.The phase quadrilateral distance function is comprised of a reactance characteristic, right and left blinders, and 100%memory-polarized directional and current supervising characteristics. When set to “Non-directional”, the quadrilateral func-tion applies a reactance line in the reverse direction instead of the directional comparators. Refer to Chapter 8 for additionalinformation.Each phase distance zone is configured individually through its own setting menu. All of the settings can be independentlymodified for each of the zones except:1. The SIGNAL SOURCE setting (common for the distance elements of all zones as entered under SETTINGS ÖØ GROUPEDELEMENTS Ö SETTING GROUP 1(6) ÖØ DISTANCE).2. The MEMORY DURATION setting (common for the distance elements of all zones as entered under SETTINGS ÖØGROUPED ELEMENTS Ö SETTING GROUP 1(6) ÖØ DISTANCE).The common distance settings described earlier must be properly chosen for correct operation of the phase distance ele-ments. Additional details may be found in Chapter 8: Theory of Operation.Although all zones can be used as either instantaneous elements (pickup [ PKP ] and dropout [ DPO ] FlexLogic™ operands)or time-delayed elements (operate [OP ] FlexLogic™ operands), only zone 1 is intended for the instantaneous under-reach-ing tripping mode.Ensure that the PHASE VT SECONDARY VOLTAGE setting (see the SETTINGS ÖØ SYSTEM SETUP Ö AC INPUTS ÖØVOLTAGE BANK menu) is set correctly to prevent improper operation of associated memory action.• PHS DIST Z1 DIR: All phase distance zones are reversible. The forward direction is defined by the PHS DIST Z1 RCAsetting, whereas the reverse direction is shifted 180° from that angle. The non-directional zone spans between the for-ward reach impedance defined by the PHS DIST Z1 REACH and PHS DIST Z1 RCA settings, and the reverse reach imped-ance defined by PHS DIST Z1 REV REACH and PHS DIST Z1 REV REACH RCA as illustrated below.MESSAGE PHS DIST Z1DIR COMP LIMIT: 90°Range: 30 to 90° in steps of 1MESSAGE PHS DIST Z1 QUADRGT BLD: 10.00 ohmsRange: 0.02 to 500.00 ohms in steps of 0.01MESSAGE PHS DIST Z1 QUADRGT BLD RCA: 85°Range: 60 to 90° in steps of 1MESSAGE PHS DIST Z1 QUADLFT BLD: 10.00 ohmsRange: 0.02 to 500.00 ohms in steps of 0.01MESSAGE PHS DIST Z1 QUADLFT BLD RCA: 85°Range: 60 to 90° in steps of 1MESSAGE PHS DIST Z1SUPV: 0.200 puRange: 0.050 to 30.000 pu in steps of 0.001MESSAGE PHS DIST Z1 VOLTLEVEL: 0.000 puRange: 0.000 to 5.000 pu in steps of 0.001MESSAGE PHS DIST Z1DELAY: 0.000 sRange: 0.000 to 65.535 s in steps of 0.001MESSAGE PHS DIST Z1 BLK:OffRange: FlexLogic™ operandMESSAGE PHS DIST Z1TARGET: Self-resetRange: Self-reset, Latched, DisabledMESSAGE PHS DIST Z1EVENTS: DisabledRange: Disabled, EnabledWARNING
