Schweitzer Engineering SEL-351P - Page 563

12-12 Standard Event Reports and SER Date Code 990215
SEL-351P Manual Técnico
Column
Heading
Corresponding Elements
(Relay Word Bits) Symbol Definition
67 P
67 N
67 G
67P1 - 67P4
67N1 - 67N4
67G1 - 67G4
4 Level 4 instantaneous element
67_4 picked up; levels 1, 2, and 3
not picked up.
67 Q 67Q1 - 67Q4 3 Level 3 instantaneous element
67_3 picked up; levels 1 and 2 not
picked up.
2 Level 2 instantaneous element
67_2 picked up; level 1 not picked
up.
1 Level 1 instantaneous element
67_1 picked up.
DM PQ PDEM, QDEM P Phase demand ammeter element
PDEM picked up.
Q Negative-sequence demand
ammeter element QDEM picked
up.
b Both PDEM and QDEM picked
up.
DM NG NDEM, GDEM N Neutral ground demand ammeter
element NDEM picked up.
G Residual ground demand ammeter
element GDEM picked up.
b Both NDEM and GDEM picked
up.
27 P 27A1, 27A2, 27B1, 27B2,
27C1, 27C2
A A-phase instantaneous
undervoltage element 27A1 or
27A2 picked up.
B B-phase instantaneous
undervoltage element 27B1 or
27B2 picked up.
C C-phase instantaneous
undervoltage element 27C1 or
27C2 picked up.
a 27A_ and 27B_ elements picked
up.
b 27B_ and 27C_ elements picked
up.
c 27C_ and 27A_ elements picked
up.
3 27A_, 27B_, and 27C_ elements
picked up.