Schweitzer Engineering Laboratories SEL-587Z - Page 172

9.10
SEL-587Z Instruction Manual Date Code 20020903
Event Reports and SER
Event Reports
50ABC2 50A2, 50B2, 50C2 3
a
b
c
A
B
C
All three level 2
single-phase instantaneous
overcurrent elements picked up
Level 2 single-
phase instantaneous
overcurrent elements
50A2 and 50B2 picked up
Level 2 single-
phase instantaneous
overcurrent elements
50B2 and 50C2 picked up
Level 2 single-
phase instantaneous
overcurrent elements
50C2 and 50A2 picked up
Level 2 single-phase
instantaneous overcurrent
element 50A2 picked up
Level 2 single-phase
instantaneous overcurrent
element 50B2 picked up
Level 2 single-phase
instantaneous overcurrent
element 50C2 picked up
50G12 50G1, 50G2 1
2
b
Residual ground
instantaneous overcurrent
element 50G1 picked up
Residual ground
instantaneous overcurrent
element 50G2 picked up
Both residual ground
instantaneous overcurrent ele-
ments 50G1 and 50G2 picked up
50Q12 50Q1, 50Q2 1
2
b
Negative-sequence
instantaneous overcurrent
element 50Q1 picked up
Negative-sequence
instantaneous overcurrent
element 50Q2 picked up
Both negative-sequence
instantaneous overcurrent ele-
ments 50Q1 and 50Q2 picked up
Lcl 12 LB1, LB1 1
2
b
Local bit LB1 asserted
Local bit LB2 asserted
Both LB1 and LB2 asserted
Lcl 34 LB3, LB4 3
4
b
Local bit LB3 asserted
Local bit LB4 asserted
Both LB3 and LB4 asserted
Lcl 56 LB5, LB6 5
6
b
Local bit LB5 asserted
Local bit LB6 asserted
Both LB5 and LB6 asserted
Lcl 78 LB7, LB8 7
8
b
Local bit LB7 asserted
Local bit LB8 asserted
Both LB7 and LB8 asserted
Table 9.4 Digital Element Columns (Sheet 4 of 7)
Column Heading
Corresponding
Elements
(Relay Word Bits)
Symbol Definition