Utility Relay Company AC-PRO-II, Instruction Manual

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AC-PRO-II
®
Instruction Manual www.utilityrelay.com
Page 35
This chart provides trip times in Seconds for the LT delay
settings at 3.0X, 4.0X and 6.0X where “X” is in multiples of
the LT pick-up setting.
The Maximum, Minimum and Nominal trip times are given
for each LT delay setting and the three listed test currents.
The Time-Current Curves in Figure 18.2 along with the
equations in Section 18.1 can be used to determine the trip
times of the other trip functions.
15.3 LT Delay Testing Chart
LT Delay Trip Time Test Current LT Delay Trip Time Test Current LT Delay Trip Time Test Current
Setting Range 3.0X 4.0X 6.0X Setting Range 3.0X 4.0X 6.0X Setting Range 3.0X 4.0X 6.0X
Max 9.88 5.56 2.47 Max 56.79 31.94 14.20 Max 103.70 58.33 25.93
2.0 Nominal 8.00 4.50 2.00 11.5 Nominal 46.00 25.88 11.50 21.0 Nominal 84.00 47.25 21.00
Min 6.61 3.72 1.65 Min 38.02 21.38 9.50 Min 69.42 39.05 17.36
Max 12.35 6.94 3.09 Max 59.26 33.33 14.81 Max 106.17 59.72 26.54
2.5 Nominal 10.00 5.63 2.50 12.0 Nominal 48.00 27.00 12.00 21.5 Nominal 86.00 48.38 21.50
Min 8.26 4.65 2.07 Min 39.67 22.31 9.92 Min 71.07 39.98 17.77
Max 14.81 8.33 3.70 Max 61.73 34.72 15.43 Max 108.64 61.11 27.16
3.0 Nominal 12.00 6.75 3.00 12.5 Nominal 50.00 28.13 12.50 22.0 Nominal 88.00 49.50 22.00
Min 9.92 5.58 2.48 Min 41.32 23.24 10.33 Min 72.73 40.91 18.18
Max 17.28 9.72 4.32 Max 64.20 36.11 16.05 Max 111.11 62.50 27.78
3.5 Nominal 14.00 7.88 3.50 13.0 Nominal 52.00 29.25 13.00 22.5 Nominal 90.00 50.63 22.50
Min 11.57 6.51 2.89 Min 42.98 24.17 10.74 Min 74.38 41.84 18.60
Max 19.75 11.11 4.94 Max 66.67 37.50 16.67 Max 113.58 63.89 28.40
4.0 Nominal 16.00 9.00 4.00 13.5 Nominal 54.00 30.38 13.50 23.0 Nominal 92.00 51.75 23.00
Min 13.22 7.44 3.31 Min 44.63 25.10 11.16 Min 76.03 42.77 19.01
Max 22.22 12.50 5.56 Max 69.14 38.89 17.28 Max 116.05 65.28 29.01
4.5 Nominal 18.00 10.13 4.50 14.0 Nominal 56.00 31.50 14.00 23.5 Nominal 94.00 52.88 23.50
Min 14.88 8.37 3.72 Min 46.28 26.03 11.57 Min 77.69 43.70 19.42
Max 24.69 13.89 6.17 Max 71.60 40.28 17.90 Max 118.52 66.67 29.63
5.0 Nominal 20.00 11.25 5.00 14.5 Nominal 58.00 32.63 14.50 24.0 Nominal 96.00 54.00 24.00
Min 16.53 9.30 4.13 Min 47.93 26.96 11.98 Min 79.34 44.63 19.83
Max 27.16 15.28 6.79 Max 74.07 41.67 18.52 Max 120.99 68.06 30.25
5.5 Nominal 22.00 12.38 5.50 15.0 Nominal 60.00 33.75 15.00 24.5 Nominal 98.00 55.13 24.50
Min 18.18 10.23 4.55 Min 49.59 27.89 12.40 Min 80.99 45.56 20.25
Max 29.63 16.67 7.41 Max 76.54 43.06 19.14 Max 123.46 69.44 30.86
6.0 Nominal 24.00 13.50 6.00 15.5 Nominal 62.00 34.88 15.50 25.0 Nominal 100.00 56.25 25.00
Min 19.83 11.16 4.96 Min 51.24 28.82 12.81 Min 82.64 46.49 20.66
Max 32.10 18.06 8.02 Max 79.01 44.44 19.75 Max 125.93 70.83 31.48
6.5 Nominal 26.00 14.63 6.50 16.0 Nominal 64.00 36.00 16.00 25.5 Nominal 102.00 57.38 25.50
Min 21.49 12.09 5.37 Min 52.89 29.75 13.22 Min 84.30 47.42 21.07
Max 34.57 19.44 8.64 Max 81.48 45.83 20.37 Max 128.40 72.22 32.10
7.0 Nominal 28.00 15.75 7.00 16.5 Nominal 66.00 37.13 16.50 26.0 Nominal 104.00 58.50 26.00
Min 23.14 13.02 5.79 Min 54.55 30.68 13.64 Min 85.95 48.35 21.49
Max 37.04 20.83 9.26 Max 83.95 47.22 20.99 Max 130.86 73.61 32.72
7.5 Nominal 30.00 16.88 7.50 17.0 Nominal 68.00 38.25 17.00 26.5 Nominal 106.00 59.63 26.50
Min 24.79 13.95 6.20 Min 56.20 31.61 14.05 Min 87.60 49.28 21.90
Max 39.51 22.22 9.88 Max 86.42 48.61 21.60 Max 133.33 75.00 33.33
8.0 Nominal 32.00 18.00 8.00 17.5 Nominal 70.00 39.38 17.50 27.0 Nominal 108.00 60.75 27.00
Min 26.45 14.88 6.61 Min 57.85 32.54 14.46 Min 89.26 50.21 22.31
Max 41.98 23.61 10.49 Max 88.89 50.00 22.22 Max 135.80 76.39 33.95
8.5 Nominal 34.00 19.13 8.50 18.0 Nominal 72.00 40.50 18.00 27.5 Nominal 110.00 61.88 27.50
Min 28.10 15.81 7.02 Min 59.50 33.47 14.88 Min 90.91 51.14 22.73
Max 44.44 25.00 11.11 Max 91.36 51.39 22.84 Max 138.27 77.78 34.57
9.0 Nominal 36.00 20.25 9.00 18.5 Nominal 74.00 41.63 18.50 28.0 Nominal 112.00 63.00 28.00
Min 29.75 16.74 7.44 Min 61.16 34.40 15.29 Min 92.56 52.07 23.14
Max 46.91 26.39 11.73 Max 93.83 52.78 23.46 Max 140.74 79.17 35.19
9.5 Nominal 38.00 21.38 9.50 19.0 Nominal 76.00 42.75 19.00 28.5 Nominal 114.00 64.13 28.50
Min 31.40 17.67 7.85 Min 62.81 35.33 15.70 Min 94.21 53.00 23.55
Max 49.38 27.78 12.35 Max 96.30 54.17 24.07 Max 143.21 80.56 35.80
10.0 Nominal 40.00 22.50 10.00 19.5 Nominal 78.00 43.88 19.50 29.0 Nominal 116.00 65.25 29.00
Min 33.06 18.60 8.26 Min 64.46 36.26 16.12 Min 95.87 53.93 23.97
Max 51.85 29.17 12.96 Max 98.77 55.56 24.69 Max 145.68 81.94 36.42
10.5 Nominal 42.00 23.63 10.50 20.0 Nominal 80.00 45.00 20.00 29.5 Nominal 118.00 66.38 29.50
Min 34.71 19.52 8.68 Min 66.12 37.19 16.53 Min 97.52 54.86 24.38
Max 54.32 30.56 13.58 Max 101.23 56.94 25.31 Max 148.15 83.33 37.04
11.0 Nominal 44.00 24.75 11.00 20.5 Nominal 82.00 46.13 20.50 30.0 Nominal 120.00 67.50 30.00
Min 36.36 20.45 9.09 Min 67.77 38.12 16.94 Min 99.17 55.79 24.79