8.2
SEL-421 Relay Instruction Manual Date Code 20171021
Settings
Global Settings
Global Settings
Make Table 8.5 settings when Global enable setting EDCMON := 1 or 2. These
settings are hidden when EDCMON := N.
Table 8.2 Global Settings Categories
Settings Reference
General Global Settings Table 8 .3
Global Enables Table 8. 4
Station DC1 Monitor (and Station DC2 Monitor) Table 8 .5
Control Inputs (Global) Table 8. 6
Main Board Control Inputs Tab le 8. 7
Interface Board #1 Control Inputs Table 8 .8
Interface Board #2 Control Inputs Table 8 .9
Settings Group Selection Table 8 .10
Frequency Estimation Table 8 .11
Time-Error Calculation Table 8 .12
Current and Voltage Source Selection Tab le 8. 13
Synchronized Phasor Measurement Tab le 8. 14
Time and Date Measurement Table 8.19
Data Reset Controls Table 8. 20
DNP Table 8. 21
Table 8.3 General Global Settings
Setting Prompt Default Value
SID Station Identifier (40 characters) Station A
RID Relay Identifier (40 characters) Relay 1
NUMBK Number of Breakers in Scheme (1, 2) 1
BID1 Breaker 1 Identifier (40 characters) Breaker 1
BID2 Breaker 2 Identifier (40 characters) Breaker 2
NFREQ Nominal System Frequency (50, 60 Hz) 60
PHROT System Phase Rotation (ABC, ACB) ABC
FAULT Fault Condition Equation SEL
OGIC Equation) 50P1 OR 51S1 OR Z2P OR
Z2G OR Z3P OR Z3G
Table 8.4 Global Enables
Setting Prompt Default Value
EDCMON Station DC Battery Monitor (N, 1, 2) N
EICIS Independent Control Input Settings (Y, N) N
EDRSTC Data Reset Control (Y, N) N
EGADVS Advanced Global Settings (Y, N) N
EPMU Synchronized Phasor Measurement (Y, N) N
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