8.5
Date Code 20171021 Instruction Manual SEL-421 Relay
Settings
Global Settings
Make Table 8.11 settings when Global enable setting EGADVS := Y.
See Current and Voltage Source Selection on page 5.2 for more information on
Table 8.13 settings.
Table 8.10 Settings Group Selection
Setting Prompt Default Value
SS1 Select Setting Group 1 (SELOGIC Equation) PB3 AND NOT SG1
SS2 Select Setting Group 2 (SEL
OGIC Equation) PB3 AND SG1
SS3 Select Setting Group 3 (SEL
OGIC Equation) 0
SS4 Select Setting Group 4 (SEL
OGIC Equation) 0
SS5 Select Setting Group 5 (SEL
OGIC Equation) 0
SS6 Select Setting Group 6 (SEL
OGIC Equation) 0
TGR Group Change Delay (0–54000 cycles) 180
Table 8.11 Frequency Estimation
Setting Prompt
Default
Value
EAFSRC Alternate Frequency Source (SELOGIC Equation) NA
VF01 Local Frequency Source 1 (ZERO, VAY, VBY, VCY, VAZ, VBZ, VCZ) VAY
VF02 Local Frequency Source 2 (ZERO, VAY, VBY, VCY, VAZ, VBZ, VCZ) VBY
VF03 Local Frequency Source 3 (ZERO, VAY, VBY, VCY, VAZ, VBZ, VCZ) VCY
VF11 Alternate Frequency Source 1 (ZERO, VAY, VBY, VCY, VAZ, VBZ, VCZ) ZERO
VF12 Alternate Frequency Source 2 (ZERO, VAY, VBY, VCY, VAZ, VBZ, VCZ) ZERO
VF13 Alternate Frequency Source 3 (ZERO, VAY, VBY, VCY, VAZ, VBZ, VCZ) ZERO
Table 8.12 Time-Error Calculation
Setting Prompt Default Value
STALLTE Stall Time-Error Calculation (SELOGIC Equation) NA
LOADTE Load TECORR Factor (SEL
OGIC Equation) NA
Table 8.13 Current and Voltage Source Selection
Setting Prompt Default Value
ESS Current and Voltage Source Selection (Y, N, 1, 2, 3, 4) N
LINEI Line Current Source (IW, COMB) IW
ALINEI Alternate Line Current Source (IX, NA) NA
ALTI Alternate Current Source (SEL
OGIC Equation) NA
BK1I Breaker 1 Current Source (IW, IX, NA) IW
BK2I Breaker 2 Current Source (IX, COMB, NA) NA
IPOL Polarizing Current (IAX, IBX, ICX, NA) NA
ALINEV Alternate Line Voltage Source (VZ, NA) NA
ALTV Alternate Voltage Source (SEL
OGIC Equation) NA
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