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【多选题】
25HZ相敏轨道电路在调整状态下主要技术指标是（）。A.
轨道继电器轨道线圈（电子接收器轨道接收端）有效电压不小于15V，不得大于调整表最大值
B.
电子接收器输出给执行继电器的电压为20~30V
C.
轨道信号电压滞后于局部电压的理想相位角为90°
D.
轨道继电器端电压应不大于7.4V，其前接点应断开
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