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英语翻译Modern distribution systemsThe modern distribution syste

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英语翻译
Modern distribution systems
The modern distribution system begins as the primary circuit leaves the sub-station and ends as the secondary service enters the customer's meter socket.A variety of methods,materials,and equipment are used among the various utility companies,but the end result is similar.First,the energy leaves the sub-station in a primary circuit,usually with all three phases.
The actual attachment to a building varies in different parts of the world.
Most areas provide three phases industrial service.There is no substitute for three-phase service to run heavy industrial equipment.A ground is normally provided,connected to conductive cases and other safety equipment,to keep current away from equipment and people.Distribution voltages vary depending on customer need,equipment and availability.Delivered voltage is usually constructed using stock transformers,and either the voltage difference between phase and neutral or the voltage difference from phase to phase.
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始于原电路的现代配电系统从配电站输出,然后终结于二次运行的系统进入用户电表接线口.各种方法、材料和设备在各种公用事业公司中间使用.首先,能量通常以所有的三种相位从变电站用原电路输出.
通往建筑物的现行附属装置在世界不同地方有所不同.
多数地区配备三项工业供电.要运转重型工业设备,不存在三项供电的替代物.通常配备接地线路,把它连接到传导箱和其他安全设备上,以便使电流不会接触到设备和人体.配电电压多样化取决于用户的需要、设备和实用.用户电压一般设置常备使用变压器 ,或者设置在相位和中性线间的电压差别或者设置从相位到相位的电压差别