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4.受限供电工作方式的基本参数与表示方程(1)基本参数U_(LT)定电压或定电流供电方式,LT馈给用户线的端电压I_(AC)数字段处和TE1于激话状态下LT馈给用户线的电流I_(DAC)数字段TE1处于激话状态下LT馈给用户线的电流P_(LT)数字段和TE1在激话状态下LT馈出的总功率。
4. Constrained power supply mode of operation of the basic parameters and equations (1) The basic parameters of U_ (LT) constant voltage or constant current power supply, LT feeder terminal voltage I_ (AC) digital section and TE1 in the excitement State LT fed to the user line current I_ (DAC) digital section TE1 in the hot state LT fed to the subscriber line current P_ (LT) digital section and TE1 LT in the excited state of the LT fed out of the total power.