安全阀的压力值在出厂时已经调定，使用中不要随意调节。
The pressure of safety value has been settled up well in factory, don t adjust it freely.
用定值电阻代替滑线变阻器，用分压器调节电压，可使二极管反向特性的测量更加方便。
Sliding resistance was replaced by the fixed value resistance, and potentiometer was used to adjust volt, it could make measurement of diode reverse characteristic more convenient.
同时给出了控制器在380V电压调节器样机上的试验结果。 试验结果表明：设计的TVR控制器能很好地实现调压操作、故障保护、定值设置、显示等功能。
The test results on380V voltage regulator are given, which show that the TVR controller implements well the functions of voltage regulation, fault protection, setting management, display and so on.
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