| 摘要 |
The invention relates to a circuit arrangement for monitoring the electrical insulation of an electrically conductive part (C) in relation to a first pole (HV+) and a second pole (HV-) of an electrical power network (for example, electrical drive network in a hybrid vehicle). The circuit arrangement is characterized in that between the electrically conductive part (C) and the two poles (HV+, HV-) a voltage divider (VD1, VD2) having at least two resistors (R1, R2, R3 and/or R4, R5, R6) is arranged in each case, a measuring unit (AMP1, AMP2) is associated with each of the two voltage dividers (VD1, VD2) and provided for measuring a partial voltage, which drops via at least one (R3 and/or R6) of the resistors, and a switch unit (Z1, Z2) is associated each with the two voltage dividers (VD1, VD2) and is provided for alternately bypassing at least one of the resistors (R2, R3, R5, R6). |
