FIG. 12 is a diagram illustrating an example process for determining the protective capabilities of a HVCB. In certain embodiments, X/R can be calculated in step 1157 and a peak current (Ipeak) can be determined using equation 11 in step 1158. In step 1162, it can be determined whether the HVCB's rating is greater than or equal to Ipeak as determined in step 1158. If the device rating is greater than or equal to Ipeak, then the device has passed in step 1164. Otherwise, the device fails in step 1166. In either case, the percent rating can be determined in step 1168 using the following:
In other embodiments, an interrupting time calculation can be made in step 1170. In such embodiments, a fault X/R can be calculated and then can be determined if the fault X/R is greater than or equal to a circuit breaker test X/R in step 1172. For example, the following circuit breaker test X/R can be used;
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- 50 Hz Test X/R=13.7
- 60 Hz Test X/R=16.7
- (DC Time Constant=0.45 ms)
