在 65 0 2电气集中联锁电路的技术条件中 ,对超限界绝缘的防护进行了具体规定 :65 0 2电气集中联锁电路在其执一线相应位置 ,串入相邻区段轨道继电器前接点及道岔反位表示继电器前接点的并联条件 (如图 2细实线 )。图 1　超限界绝缘部位的站场平面示意图但有些特殊情况则不能简 65 0 2 Electrical interlocking circuit in the technical conditions, the protection of ultra-limit insulation were specified: 65 0 2 Electrical interlock circuit in its executive line corresponding position, into the adjacent section of the track relay contact And turn-off switch indicates that the relay contacts the parallel conditions (Figure 2 thin solid line). Figure 1 over limit insulation site schematic diagram of the station site But in some special cases can not be simplified