A股电网设备板块午后持续上扬，球冠电缆涨超20%创历史新高，华菱线缆涨停，晨光电缆、中国西电、通光线缆跟涨。

Group 1 - The A-share power grid equipment sector experienced a significant rise in the afternoon, with Qiaoguan Cable increasing over 20% to reach a historical high [1] - Hualing Cable reached the daily limit, indicating strong market interest and demand [1] - Other companies such as Chenguang Cable, China Western Electric, and Tongguang Cable also saw gains, reflecting a broader positive trend in the sector [1]