Schweitzer Engineering Laboratories SEL-421-4 - Table 8.61 81 Elements; Table 8.62 under Voltage (27) Element; Table 8.63 over Voltage (59) Element

8.25
Date Code 20171021 Instruction Manual SEL-421 Relay
Settings
Group Settings
Make Table 8.61 settings if E81 is not N.
Make Table 8.62 settings if E27 is not set to N.
Make Table 8.63 settings if E27 is not set to N.
51S3C 51S3 Inverse Time Overcurrent Curve
(U1–U5) US
(C1–C5) IEC
U3 U3
51S3TD 51S3 Inverse Time Overcurrent Time Dial
(0.50–15.00) US
(0.05–1.00) IEC
1.0 1.0
51S3RS 51S3 Inverse Time Overcurrent Electromagnetic Reset
(Y, N)
NN
51S3TC
b
51S3 Torque Control (SELOGIC Equation) Z2P Z2P
a
Parameter n = L for line, 1 for BK1, 2 for BK2.
b
This setting cannot be set to NA or to logical 0.
Table 8.61 81 Elements
Setting Prompt Default Value
81UVSP 81 Element Under Voltage Supervision (20.00–200 V, sec) 85
81DnP
a
a
Where n is 1-E81.
Level n Pickup (40.01–69.99 Hz) 61
81DnD
a
Level n Time Delay (0.04–400 s) 2
Table 8.62 Under Voltage (27) Element
e
a
a
Where e is 1-E27.
Setting Prompt Default Value
27Oe Under Voltage e Operating Quantity V1F1M
27PeP1 Under Voltage e Level 1 Pickup (2.00–300 V, sec) 20
27TCe Under Voltage e Torque Control (SEL
OGIC Equation) 1
27PeD1 Under Voltage e Level 1 Delay (0.00–16000 cycles) 10
27PeP2 Under Voltage e Level 2 Pickup (2.00–300 V, sec) 15
Table 8.63 Over Voltage (59) Element
e
a
a
Where e is 1-E59.
Setting Prompt Default Value
59Oe Over Voltage e Operating Quantity V1F1M
59PeP1 Over Voltage e Level 1 Pickup (2.00–300 V, sec) 76
59TCe Over Voltage e Torque Control (SEL
OGIC Equation) 1
59PeD1 Over Voltage e Level 1 Delay (0.00–16000 cycles) 10
59PeP2 Over Voltage e Level 2 Pickup (2.00–300 V, sec) 80
Table 8.60 Selectable Operating Quantity Inverse Time Overcurrent Element 3
(Sheet 2 of 2)
Setting Prompt
Default Value
5 A 1 A