SET.8
of 26
SEL-351A-1 Settings Sheets
Relay Settings (Serial Port Command SET and Front Panel)
SEL-351A-1 Relay Instruction Manual Date Code 20080213
Date________________
Switch-Onto-Fault (See Figure 5.3)
(Make the following settings if preceding enable setting ESOTF = Y.)
Close enable time delay
(OFF, 0.00–16000.00 cycles in 0.25-cycle steps)
CLOEND =
52A enable time delay
(OFF, 0.00–16000.00 cycles in 0.25-cycle steps)
52AEND =
SOTF duration (0.50–16000.00 cycles in 0.25-cycle steps)
SOTFD =
Demand Metering Settings (See Figure 8.11 and Figure 8.13)
(Make the following settings, whether preceding enable setting EDEM = THM or ROL.)
Time constant (5, 10, 15, 30, 60 minutes) DMTC =
Phase pickup
(OFF, 0.50–16.00 A {5 A nom.}, 0.10–3.20 A {1 A nom.})
PDEMP =
Neutral-ground pickup—channel IN
(OFF, 0.500–16.000 A {5 A nom.},
0.100–3.200 A {1 A nom.},
0.005–0.640 A {0.2 A nom.}, 0.005–0.160 A {0.05 A nom.})
NDEMP =
Residual-ground pickup
(OFF, 0.10–16.00 A {5 A nom.}, 0.02–3.20 A {1 A nom.})
GDEMP =
Negative-sequence pickup
(OFF, 0.50–16.00 A {5 A nom.}, 0.10–3.20 A {1 A nom.})
QDEMP =
Other Settings
(Make the following settings—they have no controlling enable setting.)
Minimum trip duration time
(4.00–16000.00 cycles in 0.25-cycle steps) (see Figure 5.1)
TDURD =
Close failure time delay
(OFF, 0.00–16000.00 cycles in 0.25-cycle steps) (see
Figure 6.1)
CFD =
Three-pole open time delay
(0.00–60.00 cycles in 0.25-cycle steps)
(usually set for no more than a few cycles; see Figure 5.3)
3POD =
Load detection phase pickup
(OFF, 0.25–100.00 A {5 A nom.},
0.05–20.00 A {1 A nom.}) (see Figure 5.3)
50LP =
SELOGIC Control Equation Variable Timers (See Figure 7.23 and Figure 7.24)
(Number of timer pickup/dropout settings dependent on preceding enable setting ESV = 1–16.)
SV1 Pickup Time (0.00–999999.00 cycles in 0.25-cycle steps) SV1PU =
SV1 Dropout Time (0.00–999999.00 cycles in 0.25-cycle steps)
SV1DO =
Courtesy of NationalSwitchgear.com
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