DEVICE AND METHOD FOR PROTECTING A CONNECTION OF A MEDIUM, HIGH OR VERY HIGH VOLTAGE ELECTRICAL NETWORK.

摘要

The invention relates to a device and a method for protecting a link of a medium, high or very high voltage electrical network, current and voltage transformers and tripping circuits being arranged on this link. This device comprises means for direct connection to a power supply, to current and voltage transformers and to trip circuits via analog links (12) and to analog-to-digital conversion means connected to a central processing unit via a digital link. (21), the analog-to-digital converting means (25) comprising an integrated test taking function.