SET.2 of 35 SEL-387-0, -5, -6 Relay Settings Sheets
Group Settings (SET Command)
SEL-387-0, -5, -6 Relay Instruction Manual Date Code 20170601
Date________________
Winding 3 CT Ratio (1–50000) CTR3 =
Winding 4 CT Ratio (1–50000)
CTR4 =
Maximum Power Transformer Capacity (OFF, 0.2–5000 MVA)
MVA =
Define Internal CT Connection Compensation (Y, N)
ICOM =
Winding 1 CT Conn. Compensation (0, 1, …, 12)
W1CTC =
Winding 2 CT Conn. Compensation (0, 1, …, 12)
W2CTC =
Winding 3 CT Conn. Compensation (0, 1, …, 12)
W3CTC =
Winding 4 CT Conn. Compensation (0, 1, …, 12)
W4CTC =
Winding 1 Line-to-Line Voltage (1–1000 kV)
VWDG1 =
Winding 2 Line-to-Line Voltage (1–1000 kV)
VWDG2 =
Winding 3 Line-to-Line Voltage (1–1000 kV)
VWDG3 =
Winding 4 Line-to-Line Voltage (1–1000 kV)
VWDG4 =
Differential Elements
NOTE: TAP1–TAP4 are auto-set by relay if MVA setting is not OFF.
Winding 1 Current Tap
(0.50–155.00 A secondary) (5 A)
(0.10–31.00 A secondary) (1 A)
TAP1 =
Winding 2 Current Tap
(0.50–155.00 A secondary) (5 A)
(0.10–31.00 A secondary) (1 A)
TAP2 =
Winding 3 Current Tap
(0.50–155.00 A secondary) (5 A)
(0.10–31.00 A secondary) (1 A)
TAP3 =
Winding 4 Current Tap
(0.50–155.00 A secondary) (5 A)
(0.10–31.00 A secondary) (1 A)
TAP4 =
Restrained Element Operating Current PU
((0.10–1.00) multiple of tap)
O87P =
Restraint Slope 1 Percentage (5–100%)
SLP1 =
Restraint Slope 2 Percentage (OFF, 25–200%)
SLP2 =
Restraint Current Slope 1 Limit ((1–20) multiple of tap)
IRS1 =
Unrestrained Element Current PU ((1–20) multiple of tap)
U87P =
Second-Harmonic Blocking Percentage (OFF, 5–100%)
PCT2 =
Fourth-Harmonic Blocking Percentage (OFF, 5–100%)
(all but SEL-387-0 Relay)
PCT4 =
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