文中介绍了通信基站的电源系统，包括交流供电系统、直流供电系统和接地系统，论述了等电位在基站建设中的重要性。
In the paper, an electrical power system of base station is introduced in detail, including AC power supply system, DC power supply system and earthing system.
等电位联结也可不与人工或自然接地体连接的，成为不接地的等电位联结。
Equipotential connection may not connect with the manual or natural earthing to become earth-free equipotential connection.
强调了在现代防雷接地系统中，重要的是等电位系统的结构而不是接地电阻阻值的大小。
It is pointed out that in modern lightningproof and grounding systems, it is the structure of the equipotential system not the grounding resistance that matters.
介绍了接地故障保护的几种不同方式，从接地故障保护、零序电流保护、剩余电流保护等方面进行了论述，指出只有与等电位联结相结合，才能完善保护作。
Several different protection ways for earth fault are introduced and discussed from earth-fault protection, zero-sequence protection, residual current protection and other aspects.
介绍了接地故障保护的几种不同方式，从接地故障保护、零序电流保护、剩余电流保护等方面进行了论述，指出只有与等电位联结相结合，才能完善保护作。
Several different protection ways for earth fault are introduced and discussed from earth-fault protection, zero-sequence protection, residual current protection and other aspects.
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