The fault characteristic theoretical analysis in the non-solidly earthed network is almost complete. But the understanding of the typical field faults and the verification of the faulty feeder selection technologies by field faults data are in great demand. The transient faulty feeder selection technologies are introduced. According to the typical field faults waveforms, the cause of the typical field faults, the fault characteristic and the effect on the result of the transient faulty feeder selection technologies are analyzed. By analyzing and summarizing the typical field faults, the understanding of the typical field faults can be improved. The reliability of the transient faulty feeder selection technologies can be verified.