701 Motor Protection Relay
Date Code 20010719
Settings Calculation
Basic Motor Protection
4.16
Table 4.8
Generic Thermal Limit Curve Tripping Times From Reset versus Multiples
of Full Load Amps, Curves 15, 20, 25, 30, 35, 40, 45 (Thermal Limit Times in Seconds) (Continued)
Curves
Multiples of
Full Load Amps
15 20 25 30 35 40 45
1.70 505.1 673.4 841.8 1010.1 1178.5 1346.8 1515.2
2.00 342.1 456.2 570.2 684.3 798.3 912.4 1026.4
2.50 216.0 288.0 360.0 432.0 504.0 576.0 648.0
3.00 150.0 200.0 250.0 300.0 350.0 400.0 450.0
3.50 110.2 146.9 183.7 220.4 257.1 293.9 330.6
4.00 84.4 112.5 140.6 168.7 196.9 225.0 253.1
4.50 66.7 88.9 111.1 133.3 155.6 177.8 200.0
5.00 54.0 72.0 90.0 108.0 126.0 144.0 162.0
6.00 37.5 50.0 62.5 75.0 87.5 100.0 122.5
7.00 27.6 36.8 45.9 55.1 64.3 73.5 82.7
8.00 21.1 28.1 35.2 42.2 49.2 56.3 63.3
9.00 16.7 22.2 27.8 33.3 38.9 44.4 50.0
10.00 13.5 18.0 22.5 27.0 31.5 36.0 40.5
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