(CN1216826-A)   NOVELTY - The electric leak detecting apparatus finds the phase difference between an AC signal voltage and an AC current of a detecting signal, detects the resistance component by computing the real part of an admittance using the phase difference, and compares the resistance component with a threshold value.    USE - For detecting an electric leak caused by deteriorated insulation between vehicle body and battery pack in an electric motorcar having a high voltage battery pack insulated from the vehicle body electrically to prevent electrical shocks.    ADVANTAGE - Avoids error due to the floating capacity and errors of the electric leak resistance of the battery pack itself. Avoid problem where the detection side and driving side are connected with a DC on account of the detection.    (JP11218554-A)   NOVELTY - The electric leak detecting apparatus finds the phase difference between an AC signal voltage and an AC current of a detecting signal, detects the resistance component by computing the real part of an admittance using the phase difference, and compares the resistance component with a threshold value.    USE - For detecting an electric leak caused by deteriorated insulation between vehicle body and battery pack in an electric motorcar having a high voltage battery pack insulated from the vehicle body electrically to prevent electrical shocks.    ADVANTAGE - Avoids error due to the floating capacity and errors of the electric leak resistance of the battery pack itself. Avoid problem where the detection side and driving side are connected with a DC on account of the detection.    (TW403838-A)   NOVELTY - The electric leak detecting apparatus finds the phase difference between an AC signal voltage and an AC current of a detecting signal, detects the resistance component by computing the real part of an admittance using the phase difference, and compares the resistance component with a threshold value.    USE - For detecting an electric leak caused by deteriorated insulation between vehicle body and battery pack in an electric motorcar having a high voltage battery pack insulated from the vehicle body electrically to prevent electrical shocks.    ADVANTAGE - Avoids error due to the floating capacity and errors of the electric leak resistance of the battery pack itself. Avoid problem where the detection side and driving side are connected with a DC on account of the detection.