Schweitzer Engineering Laboratories SEL-351 - Page 342

ii Setting the Relay Date Code 20001006
SEL-351 Instruction Manual
Figure 9.7: I.E.C. Class B Curve (Very Inverse): C2...........................................................................9-5
Figure 9.8: I.E.C. Class C Curve (Extremely Inverse): C3...................................................................9-6
Figure 9.9: I.E.C. Long-Time Inverse Curve: C4................................................................................9-6
Figure 9.10: I.E.C. Short-Time Inverse Curve: C5 ...............................................................................9-6
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