【摘要】 本文讨论了用于地铁杂散电流防护的排流方法所存在的问题．为消除排流电流过大所造成的危害，研制了一种可自动调节和限制排流电流的自动排流装置．实验表明，该装置能够实现预期的功能．更多还原

【Abstract】 Prablems of drainage method for protecting from underground stray current are discussed.In order to eliminate the harm coused by excess drainage current,an automatic drainage arrangement that can regulate and limite the drainage current is develaped.Experiments show that this arrangement can realize the function desired.更多还原