A sampling technology by optical fiber solves the problem of high voltage insulation and data transfer when on line monitoring the leaky current of MOA.

• 用光纤取样的技术解决了避雷器泄漏电流检测中的高电压隔离和数据远传问题,这适用于无人值守变电所实行避雷器泄漏电流自动监测和电流超标即时报警。