Power electronic devices are usually designed to operate in symmetric power systems. So installingpower electronic devices in unbalanced power systems can cause problem.
电力电子装置通常设计运行在系统(电网)对称条件下,因此当系统电压不对称时可能会对装置产生严重影响。
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The double-faced hollow toughened glass provides good sound insulation, heat insulation and safety. Installingpower-operated or magnetic control shutter will save you the trouble of curtain cleaning.