Date Code 20151029 Protection Manual SEL-411L Relay
Section 16
P.Protection Manual
Relay Word Bits
Alphabetic
Use this appendix as a reference for Relay Word bit labels in this manual and as a resource for elements you use in
SEL
OGIC
control equation relay settings. Table 16.1 lists the Relay Word bits in alphabetic order.
Table 16.1 Alphabetical List of Relay Word Bits (Sheet 1 of 39)
Name Bit Description Row
25A1BK1 Circuit Breaker 1 voltages within Synchronism Angle 1 28
25A1BK2 Circuit Breaker 2 voltages within Synchronism Angle 1 30
25A2BK1 Circuit Breaker 1 voltages within Synchronism Angle 2 29
25A2BK2 Circuit Breaker 2 voltages within Synchronism Angle 2 30
25ENBK1 Circuit Breaker 1 synchronism-check element enable 28
25ENBK2 Circuit Breaker 2 synchronism-check element enable 29
25W1BK1 Circuit Breaker 1 Angle 1 within Window 1 28
25W1BK2 Circuit Breaker 2 Angle 1 within Window 1 30
25W2BK1 Circuit Breaker 1 Angle 2 within Window 2 28
25W2BK2 Circuit Breaker 2 Angle 2 within Window 2 30
271P1 Undervoltage Element 1, Level 1 picked up 231
271P1T Undervoltage Element 1 Level 1 timed out 232
271P2 Undervoltage Element 1, Level 2 picked up 233
272P1 Undervoltage Element 2, Level 1 picked up 231
272P1T Undervoltage Element 2 Level 1 timed out 232
272P2 Undervoltage Element 2, Level 2 picked up 233
273P1 Undervoltage Element 3, Level 1 picked up 232
273P1T Undervoltage Element 3 Level 1 timed out 232
273P2 Undervoltage Element 3, Level 2 picked up 233
274P1 Undervoltage Element 4, Level 1 picked up 232
274P1T Undervoltage Element 4 Level 1 timed out 232
274P2 Undervoltage Element 4, Level 2 picked up 233
275P1 Undervoltage Element 5, Level 1 picked up 232
275P1T Undervoltage Element 5 Level 1 timed out 233
275P2 Undervoltage Element 5, Level 2 picked up 233
276P1 Undervoltage Element 6, Level 1 picked up 232
276P1T Undervoltage Element 6 Level 1 timed out 233
276P2 Undervoltage Element 6, Level 2 picked up 233
27APO A-phase undervoltage, pole open 81
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