Schweitzer Engineering Laboratories SEL-421-4 - Table 8.27 Breaker 1 Contact Wear (and Breaker 2 Contact Wear); Table 8.26 Breaker 1 Monitor (and Breaker 2 Monitor); Table 8.25 Breaker 2 Inputs

8.10
SEL-421 Relay Instruction Manual Date Code 20171021
Settings
Breaker Monitor Settings
Make Table 8.25 settings if Global setting NUMBK := 2.
Make Table 8.26 through Table 8.33 settings when Breaker Monitor setting
EB1MON := Y or EB2MON := Y.
52AB1 B-Phase Normally Open Contact Input—BK1 (SELOGIC Equation)
b
52AA1
52AC1 C-Phase Normally Open Contact Input—BK1 (SEL
OGIC Equation)
b
52AA1
a
This setting for three-pole trip applications when setting BK1TYP := 3.
b
This setting for single-pole trip applications when setting BK1TYP := 1.
Table 8.25 Breaker 2 Inputs
Setting Prompt
Default
Value
52AA2 Normally Open Contact Input—BK2 (SELOGIC Equation)
a
a
This setting for three-pole trip applications when setting BK2TYP := 3.
NA
52AA2 A-Phase Normally Open Contact Input—BK2 (SEL
OGIC Equation)
b
b
This setting for single-pole trip applications when setting BK2TYP := 1.
NA
52AB2 B-Phase Normally Open Contact Input—BK2 (SEL
OGIC Equation)
b
52AA2
52AC2 C-Phase Normally Open Contact Input—BK2 (SEL
OGIC Equation)
b
52AA2
Table 8.26 Breaker 1 Monitor (and Breaker 2 Monitor)
Setting
a
a
Replace 1 with 2 in the setting, prompt, and default value for Breaker 2 settings.
Prompt Default Value
BM1TRPA Breaker Monitor Trip—BK1 (SELOGIC 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)
c
BM1TRPA
BM1TRPC Breaker Monitor C-Phase Trip—BK1 (SEL
OGIC Equation)
c
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)
c
BM1CLSA
BM1CLSC Breaker Monitor C-Phase Close—BK1 (SEL
OGIC Equation)
c
BM1CLSA
Table 8.27 Breaker 1 Contact Wear (and Breaker 2 Contact Wear)
Setting
a
a
Replace 1 with 2 in the setting and prompt for Breaker 2 settings.
Prompt Default Value
B1COSP1 Close/Open Set Point 1—BK1 (0–65000 operations) 1000
B1COSP2 Close/Open Set Point 2—BK1 (0–65000 operations) 100
B1COSP3 Close/Open Set Point 3—BK1 (0–65000 operations) 10
B1KASP1 kA Interrupted Set Point 1—BK1 (1.0–999 kA) 20.0
B1KASP2 kA Interrupted Set Point 2—BK1 (1.0–999 kA) 60.0
B1KASP3 kA Interrupted Set Point 3—BK1 (1.0–999 kA) 100.0
B1BCWAT Contact Wear Alarm Threshold—BK1 (0–100%) 90
Table 8.24 Breaker 1 Inputs (Sheet 2 of 2)
Setting Prompt
Default
Value