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zhangli019
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樓主  發(fā)表于: 2011-03-21 19:37
各位叔伯阿姨大媽大嬸，論壇的各位大俠！小弟請教了：

一臺300W的三相電機，380V供電。

本人選擇熱保護繼電器的時(shí)候用（300/380*1.732）*1.1=0.5A，采用整定電流為0.5A的熱保護繼電器。選用型號如下圖

如圖中倒數第二行，0.4--0.6A的熱保護繼電器，大家看可行嗎？如果有問(wèn)題，請大家告知計算方法，選型方法。感謝了�。�！
給我一根杠桿，一個(gè)支點(diǎn)
王春茂
咖啡貓
級別: 網(wǎng)絡(luò )英雄

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1樓  發(fā)表于: 2011-03-24 20:14
300w的電機沒(méi)見(jiàn)過(guò)，只見(jiàn)過(guò)370w的，370w的額定電流大概1.12A，300w的話(huà)，0.6-1A比較合適
本人已換手機號碼為13929895518，舊號碼將停用

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