Sel SEL-421 - Breaker 1 Inputs; Breaker 2 Inputs; Breaker 1 Monitor (and Breaker 2 Monitor

R.10.12
SEL-421 Relay Reference Manual Date Code 20111215
Settings
Breaker Monitor Settings
Make Table 10.20 settings if Global setting NUMBK := 2.
Make Table 10.21 through Table 10.28 settings when Breaker Monitor setting
EB1MON := Y or EB2MON := Y.
Table 10.19 Breaker 1 Inputs
Label Prompt Default Value
52AA1 Normally Open Contact Input—BK1
(SEL
OGIC Equation)
a
a
This setting for three-pole trip applications when setting BK1TYP := 3.
IN101
52AA1 A-Phase Normally Open Contact Input—BK1
(SEL
OGIC Equation)
b
b
This setting for single-pole trip applications when setting BK1TYP := 1.
IN101
52AB1 B-Phase Normally Open Contact Input—BK1
(SEL
OGIC Equation)
52AA1
52AC1 C-Phase Normally Open Contact Input—BK1
(SEL
OGIC Equation)
52AA1
Table 10.20 Breaker 2 Inputs
Label Prompt Default Value
52AA2 Normally Open Contact Input—BK2
(SEL
OGIC Equation)
a
a
This setting for three-pole trip applications when setting BK1TYP := 3.
NA
52AA2 A-Phase Normally Open Contact Input—BK2
(SEL
OGIC Equation)
b
b
This setting for single-pole trip applications when setting BK1TYP := 1.
NA
52AB2 B-Phase Normally Open Contact Input—BK2
(SEL
OGIC Equation)
52AA2
52AC2 C-Phase Normally Open Contact Input—BK2
(SEL
OGIC Equation)
52AA2
Table 10.21 Breaker 1 Monitor (and Breaker 2 Monitor
a
)
a
Replace 1 with 2 in the setting label, prompt, and default value.
Label Prompt Default Value
BM1TRPA Breaker Monitor Trip—BK1
(SEL
OGIC Equation)
b
b
This setting for three-pole trip applications when setting BK1TYP := 3.
TPA1
BM1TRPA Breaker Monitor A-Phase Trip—BK1
(SEL
OGIC Equation)
c
c
This setting for single-pole trip applications when setting BK1TYP := 1.
TPA1
BM1TRPB Breaker Monitor B-Phase Trip—BK1
(SEL
OGIC Equation)
BM1TRPA
BM1TRPC Breaker Monitor C-Phase Trip—BK1
(SEL
OGIC Equation)
BM1TRPA
BM1CLSA Breaker Monitor Close—BK1
(SEL
OGIC Equation)
b
BK1CL
BM1CLSA Breaker Monitor A-Phase Close—BK1
(SEL
OGIC Equation)
c
BK1CL
BM1CLSB Breaker Monitor B-Phase Close—BK1
(SEL
OGIC Equation)
BM1CLSA
BM1CLSC Breaker Monitor C-Phase Close—BK1
(SEL
OGIC Equation)
BM1CLSA