引用第3楼hncjy365于2009-01-06 10:34发表的 :
LZ的此款带风扇取暖器是属于污染等级为3级的产品,按60335表17基本绝缘的最小爬电距离的要求是4mm,但注1中有绕组漆包线的爬电距离不必在于表16基本绝缘的最小电气间隙的要求(1.5mm).
所以应符合电气间隙和爬电距离的要求
引用第5楼luqing_sz于2009-01-06 13:07发表的 :
29.1 !Clearances shall not be less than the values specified in Table 16, taking into account the rated impulse voltage for the overvoltage categories of Table 15, unless, for basic insulation and functional insulation, they comply with the impulse voltage test of Clause 14. However, if the construction is such that the distances could be affected by wear, by distortion, by movement of the parts or during assembly, the clearances for rated impulse voltages of 1 500 V and above are increased by 0,5 mm and the impulse voltage test is not applicable. 故马达绕组与接地金属的爬电距离为:1.5+0.5=2.0mm.故楼主的产品已符合安规.
引用第9楼naja于2009-01-06 17:24发表的 :
根据CTL desicion sheet 即使用测试指, 也只是基本绝缘的要求.
[是不是应该用B型试验探棒(试验指)插入开口后再测量,并且绕组到试验指之间的距离至少为加强绝缘的爬电距离的要求。(从图片上金属外壳已接地)]
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对于注1中 有绕组漆包线的爬电距离不必在于表16基本绝缘的最小电气间隙的要求(1.5mm), 我认为其前提是符合 29.1.1 的微污染环境下适用的, 对于此图的结构, 应该是不能应用的.
引用第5楼luqing_sz于2009-01-06 13:07发表的 :, G8 }: D* O0 t
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29.1 !Clearances shall not be less than the values specified in Table 16, taking into account the rated impulse voltage for the overvoltage categories of Table 15, unless, for basic insulation and functional insulation, they comply with the impulse voltage test of Clause 14. However, if the construction is such that the distances could be affected by wear, by distortion, by movement of the parts or during assembly, the clearances for rated impulse voltages of 1 500 V and above are increased by 0,5 mm and the impulse voltage test is not applicable. 故马达绕组与接地金属的爬电距离为:1.5+0.5=2.0mm.故楼主的产品已符合安规.
引用第11楼luqing_sz于2009-01-06 20:55发表的 :
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29.1.1只提及基本绝缘的间隙如何评定,而整个标准(60335-1)中规定电气间隙与污染等级没有任何关系,只有爬电距离与污染等级才有关.所以表17备注1适用.
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