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.
Содержание SEL-351P
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