Schweitzer Engineering Laboratories SEL-351A - Page 486

12.14
SEL-351A Relay Instruction Manual Date Code 20080213
Standard Event Reports and SER
Standard 15/30-Cycle Event Reports
F32N N Forward element F32N picked up
(low-impedance grounded,
Petersen Coil grounded [wattmetric
element], and ungrounded/high-
impedance grounded systems).
R32N n Reverse element R32N picked up
(low-impedance grounded,
Petersen Coil grounded [wattmetric
element], and ungrounded/high-
impedance grounded systems).
F32C C Forward conductance element
F32C picked up (Petersen Coil
grounded system).
R32C c Reverse conductance element
R32C picked up (Petersen Coil
grounded system).
67 P
67 N
67 G
67 Q
67P1–67P4
67N1–67N4
67G1–67G4
67Q1–67Q4
4
3
Level 4 instantaneous element
67_4 picked up; levels 1, 2, and 3
not picked up.
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 amme-
ter 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
(wye-connected)
27A1, 27A2,
27B1, 27B2,
27C1, 27C2
A A-phase instantaneous undervolt-
age element 27A1 or 27A2 picked
up.
B B-phase instantaneous undervolt-
age element 27B1 or 27B2 picked
up.
C C-phase instantaneous undervolt-
age element 27C1 or 27C2 picked
up.
a 27A_ and 27B_ elements picked
up.
b 27B_ and 27C_ elements picked
up.
Table 12.3 Output, Input, and Protection, and Control Element Event Report
Columns (Sheet 3 of 9)
Column Heading
Corresponding
Elements (Relay
Word Bits)
Symbol Definition
Courtesy of NationalSwitchgear.com