SEL-387E Relay Settings Sheet
Page 2 of 28
Group Settings (SET Command) Example
Date
Group
Date Code 20080110
Winding 2 Line-to-Line Voltage (1–1000 kV) VWDG2 = 138
Winding 3 Line-to-Line Voltage (1–1000 kV) VWDG3 = 13.8
PT Ratio (1–6500) PTR = 2000
Compensation Angle (0–360 degrees) COMPANG = 0
Voltage-Current Winding (1, 2, 3, 12) VIWDG = 1
Three-Phase Voltage Input (Y, N) TPVI = Y
D
IFFERENTIAL
E
LEMENTS
Note: TAP1–TAP3 are auto-set by relay if MVA setting is not OFF.
Winding 1 Current Tap
(0.5–155.0 A secondary) (5 A) TAP1 = 2.09
(0.1–31.0 A secondary) (1 A) 0.42
Winding 2 Current Tap
(0.5–155.0 A secondary) (5 A) TAP2 = 1.74
(0.1–31.0 A secondary) (1 A) 0.35
Winding 3 Current Tap
(0.5–155.0 A secondary) (5 A) TAP3 = 10.46
(0.1–31.0 A secondary) (1 A) 2.09
Restrained Element Operating Current PU ((0.10-1.00) multiple of tap) O87P = 0.30
Restraint Slope 1 Percentage (5–100%) SLP1 = 25
Restraint Slope 2 Percentage (OFF, 25–200%) SLP2 = 50
Restraint Current Slope 1 Limit ((1–20) multiple of tap) IRS1 = 3
Unrestrained Element Current PU ((1–20) multiple of tap) U87P = 10
Second-Harmonic Blocking Percentage (OFF, 5–100%) PCT2 = 15
Fourth-Harmonic Blocking Percentage (OFF, 5–100%) PCT4 = 15
Fifth-Harmonic Blocking Percentage (OFF, 5–100%) PCT5 = 35
Fifth-Harmonic Alarm Threshold (OFF, (0.02–3.20) multiple of tap) TH5P = OFF
Fifth-Harmonic Alarm TDPU (0–8000 cycles) TH5D = 30
DC Ratio Blocking (Y, N) DCRB = N
Harmonic Restraint (Y, N) HRSTR = Y
Independent Harmonic Blocking (Y, N) IHBL = N
R
ESTRICTED
E
ARTH
F
AULT
Enable 32I (SEL
OGIC
control equation)
E32I = 0
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