SETTINGS SHEET Page 9 of 24
FOR THE SEL-351 RELAY Date
RELAY SETTINGS (SERIAL PORT COMMAND SET AND FRONT PANEL)
Date Code 20001006
(Make the following settings if preceding enable setting EVOLT = Y and the voltage inputs are delta-
connected)
Phase-to-phase undervoltage pickup (OFF, 0.0 - 260.0 V secondary) 27PP1P =
Phase-to-phase undervoltage pickup (OFF, 0.0 - 260.0 V secondary) 27PP2P =
Phase-to-phase overvoltage pickup (OFF, 0.0 - 260.0 V secondary) 59PP1P =
Phase-to-phase overvoltage pickup (OFF, 0.0 - 260.0 V secondary) 59PP2P =
Negative-Sequence (V2) overvoltage pickup (OFF, 0.0 - 100.0 V secondary) 59Q1P =
Negative-Sequence (V2) overvoltage pickup (OFF, 0.0 - 100.0 V secondary) 59Q2P =
Positive-Sequence (V1) overvoltage pickup (OFF, 0.0 - 150.0 V secondary) 59V1P =
Channel VS undervoltage pickup (OFF, 0.0 - 260.0 V secondary) 27SP =
Channel VS overvoltage pickup (OFF, 0.0 - 260.0 V secondary) 59S1P =
Channel VS overvoltage pickup (OFF, 0.0 - 260.0 V secondary) 59S2P =
Synchronism Check Elements (See Figures 3.26 and 3.27)
(Make the following settings if preceding enable setting E25 = Y)
Voltage window - low threshold
(0.00 - 150.00 V secondary, 150 V wye-connected voltage inputs;
0.00 - 300.00 V secondary, 300 V wye-connected voltage inputs;
0.00 - 260.00 V secondary, delta-connected voltage inputs)
25VLO =
Voltage window - high threshold
(0.00 - 150.00 V secondary, 150 V wye-connected voltage inputs;
0.00 - 300.00 V secondary, 300 V wye-connected voltage inputs;
0.00 - 260.00 V secondary, delta-connected voltage inputs)
25VHI =
Maximum slip frequency (0.005 - 0.500 Hz) 25SF =
Maximum angle 1 (0.00° - 80.00°) 25ANG1 =
Maximum angle 2 (0.00° - 80.00°) 25ANG2 =
Synchronizing phase (Wye-connected voltage inputs: VA, VB, VC, or
0° - 330° in 30° steps; degree option is for VS not in phase with VA, VB, or
VC – set with respect to VS constantly lagging VA)
(Delta-connected voltage inputs: VAB, VBC, VCA, or 0 - 330° in 30° steps;
degree option is for VS not in phase with VAB, VBC, or VCA – set with
repsect to VS constantly lagging VAB.)
SYNCP =
Breaker close time for angle compensation
(0.00 - 60.00 cycles in 0.25-cycle steps)
TCLOSD =
Frequency Element (See Figures 3.29 and 3.30)
(Make the following settings if preceding enable setting E81 = 1 - 6)
Phase undervoltage block
(12.50 - 150.00 V secondary, 150 V wye-connected voltage inputs;
25.00 - 300.00 V secondary, 300 V wye-connected voltage inputs;
34.00 - 260.00 V secondary, delta-connected voltage inputs)
27B81P =
Level 1 pickup (OFF, 40.10 - 65.00 Hz) 81D1P =
Level 1 time delay (2.00 - 16000.00 cycles in 0.25-cycle steps) 81D1D =
Courtesy of NationalSwitchgear.com
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