Sel 411L - Table 4.20 Two-Circuit-Breaker Single-Pole Reclose Initial Settings; Table 4.21 Circuit Breaker BK1 Modes of Operation

P.4.24
SEL-411L Relay Protection Manual Date Code 20151029
Autoreclosing and Synchronism-Check
Two-Circuit-Breaker Autoreclosing
Single-Pole Trip Circuit Breakers
The initial settings necessary to enable autoreclose for two single-pole trip
circuit breakers are shown in Table 4.20.
Recloser Mode
Enables
The SELOGIC control equations E3PRn and ESPRn set the relay for the three
autoreclose modes. Table 4.21 and Table 4.22 illustrate how to enable the
autoreclose modes per circuit breaker.
E3PR1 is the SEL
OGIC control equation that enables three-pole autoreclose
for Circuit Breaker BK1. You can assign this setting to a control input. ESPR1
is the SEL
OGIC control equation that enables single-pole autoreclose for
Circuit Breaker BK1. You can assign this setting to a control input.
When ESPR1 equals logical 1, the relay can attempt a single-pole autoreclose
cycle for Circuit Breaker BK1. If ESPR1 equals logical 0, the relay cannot
initiate a single-pole autoreclose cycle for Circuit Breaker BK1.
When E3PR1 equals logical 1, the relay can attempt a three-pole autoreclose
cycle for Circuit Breaker BK1. If E3PR1 equals logical 0, the relay goes to
lockout following a three-pole trip for Circuit Breaker BK1 and the
corresponding leader logic transfers automatically to Circuit Breaker BK2.
Table 4.20 Two-Circuit-Breaker Single-Pole Reclose Initial Settings
Setting Description Entry
NUMBK Number of Breakers in Scheme 2
Breaker Configuration (Breaker Monitor)
BK1TYP Breaker 1 Trip Type 1
BK2TYP Breaker 2 Trip Type 1
Breaker 1 Inputs (Breaker Monitor)
52AA1 A-phase N/O Contact Input—BK1 (SELOGIC Equation) IN201
52AB1 B-phase N/O Contact Input—BK1 (SEL
OGIC Equation) IN202
52AC1 C-phase N/O Contact Input—BK1 (SEL
OGIC Equation) IN203
Breaker 2 Inputs (Breaker Monitor)
52AA2 A-phase N/O Contact Input—BK2 (SELOGIC Equation) IN204
52AB2 B-phase N/O Contact Input—BK2 (SEL
OGIC Equation) IN205
52AC2 C-phase N/O Contact Input—BK2 (SEL
OGIC Equation) IN206
Relay Configuration (Group)
E79 Reclosing Y or Y1
Table 4.21 Circuit Breaker BK1 Modes of Operation
E3PR1 ESPR1 Result
0 0 Autoreclose disabled
0 1 Single-pole autoreclose only enabled
1 0 Three-pole autoreclose only enabled
1 1 Single- and three-pole autoreclose enabled