Sel 751A - Voltage-Based Protection; Table 4.17 Undervoltage Settings

4.29
Date Code 20100129 Instruction Manual SEL-751A Relay
Protection and Logic Functions
Voltage-Based Protection
Voltage-Based Protection
The following information applies to relay models with voltage inputs.
Undervoltage
Function
140 60.00 123.24 165.90 135.30 11.35
158 70.00 127.07 174.25 141.70 11.74
176 80.00 130.89 182.84 148.30 12.12
194 90.00 134.70 191.64 154.90 12.51
212 100.00 138.50 200.64 161.80 12.90
230 110.00 142.29 209.85 168.80 13.28
248 120.00 146.06 219.29 176.00 13.67
266 130.00 149.83 228.96 183.30 14.06
284 140.00 153.58 238.85 190.90 14.44
302 150.00 157.32 248.95 198.70 14.83
320 160.00 161.05 259.30 206.60 15.22
338 170.00 164.77 269.91 214.80 15.61
356 180.00 168.47 280.77 223.20 16.00
374 190.00 172.17 291.96 231.80 16.39
392 200.00 175.85 303.46 240.70 16.78
410 210.00 179.15 315.31 249.80 17.17
428 220.00 183.17 327.54 259.20 17.56
446 230.00 186.82 340.14 268.90 17.95
464 240.00 190.45 353.14 278.90 18.34
482 250.00 194.08 366.53 289.10 18.73
Table 4.16 RTD Resistance versus Temperature (Sheet 2 of 2)
Temp
(°F)
Te m p
(°C)
100
Platinum
120
Nickel
100
Nickel
10
Copper
Table 4.17 Undervoltage Settings
Setting Prompt Setting Range
Setting Name :=
Factory Default
UV TRIP1 LEVEL OFF, 0.02–1.00 xVnm 27P1P := OFF
UV TRIP1 DELAY 0.0–120.0 sec 27P1D := 0.5
UV TRIP2 LEVEL OFF, 0.02–1.00 xVnm 27P2P := OFF
UV TRIP2 DELAY 0.0–120.0 sec 27P2D := 5.0
UVS LEVEL 1 OFF, 2.00–300.00 V 27S1P := OFF
UVS DELAY 1 0.0–120.0 sec 27S1D := 0.5
UVS LEVEL 2 OFF, 2.00–300.00 V 27S2P := OFF
UVS DELAY 2 0.0–120.0 sec 27S2D := 0.5