Sel SEL-421 - Voltage Check Element Logic; Auto-Reclose Logic Settings

R.2.46
SEL-421 Relay Reference Manual Date Code 20111215
Auto-Reclosing and Synchronism Check
Settings and Relay Word Bits for Auto-Reclosing and Manual Closing
Figure 2.18 Voltage Check Element Logic
Settings and Relay Word Bits for Auto-Reclosing
and Manual Closing
Tab le 2.24 shows the auto-reclose logic settings. Table 2.25 provides all of the
Relay Word bits for auto-reclosing.
—
+
—
+
—
+
—
+
—
+
—
+
27BK2P
27BK1P
V
S1
59BK1P
V
S2
59BK2P
LLDB2
DLDB2
DLLB1
LLDB1
DLLB2
DLDB1
27LP
V
P
59LP
Settings Voltages
Relay
Word
Bits
Table 2.24 Auto-Reclose Logic Settings (Sheet 1 of 3)
a
Label Prompt Default Value
Recloser Closing
NSPSHOT Number of Single-Pole Reclosures (N, 1, 2) N
ESPR1 Single-Pole Reclose Enable—BK1
(SEL
OGIC Equation)
NA
ESPR2 Single-Pole Reclose Enable—BK2
(SEL
OGIC Equation)
NA
N3PSHOT Number of Three-Pole Reclosures (N, 1–4) 2
E3PR1 Three-Pole Reclose Enable—BK1
(SEL
OGIC Equation)
PLT06
E3PR2 Three-Pole Reclose Enable—BK2
(SEL
OGIC Equation)
PLT06
TBBKD Time Between Breakers for Automatic Reclose
(1–99999 cycles)
300
BKCFD Breaker Close Failure Delay
(OFF, 1–99999 cycles)
300