译文：
1、根据所选电动执行器确定电气参数 因不同电动执行器厂家的电气参数有所差别，所以设计选型时一般都需确定其电气参数，主要有电机功率、额定电流、二次控制回路电压等，往往在这方面的疏忽，结果控制系统与电动执行器参数不匹配造成工作时空开跳闸、保险丝熔断、热过载继电器保护起跳等故障现像。 2、根据阀门所需的扭力确定电动执行器的输出扭力 阀门启闭所需的扭力决定着电动执行器选择多大的输出扭力，一般由使用者提出或阀门厂家自行选配，做为执行器厂家只对执行器的输出扭力负责，阀门正常启闭所需的扭力由阀门口径大小、工作压力等因素决定，但因阀门厂家加工精度、装配工艺有所区别，所以不同厂家生产的同规格阀门所需扭力也有所区别，即使是同个阀门厂家生产的同规格阀门扭力也有所差别，当选型时执行器的扭力选择太小就会造成无法正常启闭阀门，因此电动执行器必需选择一个合理的扭力范围。

“ Electric Actuator choose to pay attention to two points”是由提供的国际阀门新闻，译文仅供参考。另外，中国电动阀门网还提供相关产品搜索： 、 、、 、 等。

原文：
1, according to the selected electric actuator determine the electrical parameters Because of different electric actuator manufacturers have different electrical parameters, design selection generally takes time to determine their electrical parameters, mainly electric power, rated current, secondary voltage control loop, are often negligent in this regard, the results of control system and the electric actuator parameter does not match the space-time caused by the work of opening trip, fuses, fuse, thermal overload relay protection is like a take-off and other failures. 2, according to the valve torque required to determine the output torque electric actuator The torque required to open and close the valve determines how much electric actuator output torque choice is generally made by the user or the valve manufacturers using their own matching, as the actuator manufacturers only responsible for the implementation of the output torque, valves and normal Kai The torque required to close by the valve diameter size, work pressure and other factors, but the valve manufacturers precision machining and assembly processes differ, so that different manufacturers to produce the same torque specifications valves have also been required to distinguish, even with the valves manufacturers to produce the same torque specifications valves are also different, was elected when the actuator torque-based selection is too small will result in not properly open and close the valve, the electric actuator torque necessary to choose a reasonable range.