HIGH-VOLTAGE SWITCH, HIGH-VOLTAGE ELECTRICAL SYSTEM IN A MOTOR VEHICLE, AND METHOD FOR OPERATING A HIGH-VOLTAGE SWITCH

摘要

The invention relates to a high-voltage switch having a first terminal contact (6a) connected to a first fixed contact (4a), a second terminal contact (6b) connected to a second fixed contact (4b), a bridge contact (8) arranged between the first fixed contact and the second fixed contact and connecting the first fixed contact to the second fixed contact, wherein the bridge contact is pressed against at least one of the fixed contacts by a pressing force and can be released from at least one of the fixed contacts by a pull-off force, and a drive (18) acting on the bridge contact in the direction of the pull-off force. According to the invention, a measuring circuit senses a voltage drop between the fixed contacts in the case of a levitation between at least one fixed contact and the bridge contact and, depending on the sensed voltage drop, controls the drive such that the drive acts on the bridge contact by means of a force in the direction of the pull-off force. The drive (18) according to the invention is preferably a pyrotechnical drive.