小弟有个IEC60335-1的问题,还请各位大哥指教.
****30.2.3.1 Parts of insulating material supporting connections that carry a current exceeding
0,2 A during normal operation, and parts of insulating material within a distance of 3 mm of
such connections, shall have a glow-wire flammability index of at least 850 °C according to
IEC 60695-2-12, the test sample being no thicker than the relevant part.
***30.2.3.2 Parts of insulating material supporting current-carrying connections, and parts of
insulating material within a distance of 3 mm of such connections, are subjected to the glowwire
test of IEC 60695-2-11. However, the glow-wire test is not carried out on parts of
material classified as having a glow-wire ignition temperature according to IEC 60695-2-13 of
at least
– 775 °C, for connections which carry a current exceeding 0,2 A during normal operation;
– 675 °C, for other connections,
provided that the test sample was no thicker than the relevant part.
When the glow-wire test of IEC 60695-2-11 is carried out, the temperatures are
– 750 °C, for connections which carry a current exceeding 0,2 A during normal operation;
– 650 °C, for other connections.
对载流超过0.2A的部件来说,30.2.3.1和30.2.3.2的两个试验是不是都要做?而这两个试验的测试方法和结果的判断有什么不同(也就是国标中所谓的灼热丝起燃指数试验和灼热丝试验)?哪位大哥有IEC 60695-2-11和IEC 60695-2-12标准能弄来看看?
想问一个关于60335-1的问题
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@老猪屁屁
谢谢liwang2006的解答.但对您的最后一句“与材料所在位置有关不太理解”.前不久做了一个项目,对于电容电机内部的骨架,按照我原来的想法,整个电机外壳都是金属,就没有做灼热丝试验,结果德国工程师要求要做850和750度.判定要求基本与老兄的一致.但是750是要求绝对要做的.只是燃烧大于2S也可以认为合格,但是超过30S好像也不认为通过??由于我英文不太好,当时也没听怎么清楚,还请老兄多指教.
EN60335-1:2002+A1:2004附錄O中很明確地規定了試驗的進行步驟,從圖中可以看到,對按30.2.3經求進行測試時,對載流超過0.2A的連接,GWFI是一定要符合的,沒有任何例外.接下來才是750C也是一定要做的,因為還是有合格的條件,即30S+30S內能自熄(否則仍是FAIL),再接下來才有機會討論周圍部件是否進行針焰測試的問題以及其豁免條件.
至於GWFI的方法,可參考下圖,它測試時與灼熱絲試驗一樣,但合格與否的判定則明顯不同:
500) {this.resized=true; this.width=500; this.alt='这是一张缩略图，点击可放大。\n按住CTRL，滚动鼠标滚轮可自由缩放';this.style.cursor='hand'}" onclick="if(!this.resized) {return true;} else {window.open('http://u.dianyuan.com/bbs/u/40/1143873930.gif');}" onmousewheel="return imgzoom(this);">
需要注意的是:
1、上邊合格的b)項中均不允許下方的紙點燃;
2、標准本身是要求做5只樣品,因為現在335中規定了GWFI/850C,因此向下一級溫度的測試就沒有必要了.
至於GWFI的方法,可參考下圖,它測試時與灼熱絲試驗一樣,但合格與否的判定則明顯不同:
500) {this.resized=true; this.width=500; this.alt='这是一张缩略图，点击可放大。\n按住CTRL，滚动鼠标滚轮可自由缩放';this.style.cursor='hand'}" onclick="if(!this.resized) {return true;} else {window.open('http://u.dianyuan.com/bbs/u/40/1143873930.gif');}" onmousewheel="return imgzoom(this);">
需要注意的是:
1、上邊合格的b)項中均不允許下方的紙點燃;
2、標准本身是要求做5只樣品,因為現在335中規定了GWFI/850C,因此向下一級溫度的測試就沒有必要了.
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