| 摘要 |
PROBLEM TO BE SOLVED: To provide a power conversion device capable of early detecting the intrusion of water into a case without increasing the number of components.SOLUTION: A power conversion device 1 includes: a main circuit part 2 having a semiconductor module 21 having a built-in switching element; a control circuit part 3 for controlling the semiconductor module 21; and a case 4 in which the main circuit part 2 and the control circuit part 3 are stored. A high voltage conduction part through which main power currents to be power-converted by the main circuit part 2 flow and a low voltage conduction part, as a part of the control circuit 3 or a site electrically connected to the control circuit part 3, through which lower voltage currents than those of the high voltage conduction part flow exist in the case 4. At least a part of the low voltage conduction part is arranged at the lower part of a vertical direction Z than a lower end B of the high voltage conduction part. |
