4-8
Loss-of-Potential, CCVT Transient Detection,
Date Code 20011205
Load-Encroachment, and Directional Element Logic
SEL-311A Instruction Manual
Use SEL-321 Relay Application Guide for the SEL-311A Relay
The load-encroachment logic and settings in the SEL-311A Relay are the same as those in the
SEL-321 Relay. Refer to
SEL-321 Relay Load-Encroachment
for applying the load-encroachment logic in the SEL-311A Relay.
D
IRECTIONAL
C
ONTROL FOR
G
ROUND
D
ISTANCE AND
R
ESIDUAL
G
ROUND
O
VERCURRENT
E
LEMENTS
Setting E32 configures directional control for distance and overcurrent elements. Setting E32 and
other directional control settings are described in the following subsection
Directional Control
Settings
.
Three directional elements are available to control the ground distance and residual ground
overcurrent elements. These three directional elements are:
·
Negative-sequence voltage-polarized directional element
·
Zero-sequence voltage-polarized directional element
·
Channel IP current-polarized directional element
Summary of Contents for SEL-311A
Page 6: ......
Page 8: ......
Page 10: ......
Page 24: ......
Page 40: ......
Page 66: ......
Page 96: ......
Page 98: ......
Page 112: ......
Page 114: ......
Page 122: ......
Page 170: ......
Page 202: ......
Page 204: ......
Page 246: ......
Page 248: ......
Page 286: ......
Page 290: ......
Page 304: ......
Page 306: ......
Page 334: ......
Page 384: ......
Page 386: ......
Page 394: ......
Page 398: ......
Page 402: ......
Page 404: ......
Page 410: ......
Page 412: ......
Page 426: ......
Page 444: ......
Page 460: ......
Page 474: ......