规定了缓解不平衡高压电力线（尤其是单线接地回路（SWER）、多个接地中性点（MEN）、单相和两相（120度）线路对电缆通信线路产生的噪声的合作措施。章节包括干扰产生的工程原理、最大值和缓解措施；负责系统分离和干扰纠正；以及新安装的程序。

Specifies cooperative measures for the mitigation of noise induced into paired cable telecommunications lines from unbalanced HV power lines, particularly single-wire earth-return (SWER), multiple earthed neutral (MEN), single-phase and two-phase (120 degrees) lines. Sections cover engineering principles of interference generation, maximum values and mitigation measures; responsibilities for system separation and correction of interference; and procedures for new installations.