引用第0楼d791225于2007-07-10 17:17发表的 出美国的电动工具的高压测试问题 :4 P% V3 i1 C; c
一类工具是1250V一分钟,二类是2000V一分钟,是不是呀?有这么长吗?
$ Q# ] E1 k# v8 g V% m; V- e& A工程測試是沒錯, 生產線測試可以改為一秒, 但電壓要根據測試要求更改, 請看標準查數據作者: d791225 时间: 2007-7-11 08:44
哦,谢谢,客人给我们的测试是这个要求,应该是送BV的样品测试作者: sam-yang 时间: 2007-7-14 15:28
二类工具应该和欧标一样也是3750吧作者: d791225 时间: 2007-7-17 14:50
不是3750,是2000,3750是相对230V电压的作者: jim_zhang 时间: 2007-7-30 09:26
1. Live parts and dead metal parts insulated from each other by basicinsulation.ClassⅠ1200V ClassⅡ1200V ClassⅢ500V8 Z7 p8 h) j/ ? ]1 Y- ?+ c
2. Accessible dead metal parts or, for a tool with an outer enclosure of insulating material, 7 ^, _- b0 o: U" Umetal foil wrapped tightly around the enclosure and inaccessible metal parts including metal foil in contact with the insulating barriers provided for spacings involving supplementary or @" M" S! }2 e8 ?- Ereinforced insulation. ClassⅡ1500 ( z% _( ~8 x& d3 \! t8 P
3. Live parts and accessible dead metal parts or, for a tool with an outer enclosure of insulating material, metal foil wrapped tightly around the enclosure. ClassⅡ3000 , g) |- ?8 @3 L' kNote A: If necessary because of the inaccessibility of parts, test in accordance with items 1 and 2 may be conducted on sub-assemblies of the tool, and, in this case, the test indicated in item 3 is to be conducted. If the tests in accordance with item 1 and 2 are conducted on the completely assembled tool, the tests indicated in item 3 may be omitted if there is no reinforced insulation.2 E% v, @6 ~8 l" o9 _
Note B: Those parts of the tests described in items 2 and 3 that include application of metal foil to outer enclosures of insulating material may be waived if the manufacturer has an acceptable quality control program. This program is to determine that the insulating material in question is free from cracks and metal inclusions, and that it has the physical and electrical strength required for the application. To determine that the material is free of cracks or metal inclusions, a 100 percent visual inspection is required. Periodic physical-property tests on molded parts shall also be conducted.$ J p* ?8 _3 ]! h3 k( [$ k0 X
Note C: The test of item 3 may be waived for accessible metal parts, such as assembly screws, that are: (1) isolated by an outer enclosure of insulating material that is subject to the control program indicated in Note B and (2) are so located that they are remote from live parts and from inaccessible metal parts separated from live parts by basic insulation only. The remoteness is to include consideration of possible displacement of parts as the result of improper assembly.作者: hoon 时间: 2008-9-26 17:07
3750V是针对双重绝缘结构而言的。在II类产品上的基本绝缘还是打1250V的，附加绝缘打2500V。UL的工具没见过打2000V的。作者: jason123 时间: 2009-4-30 10:33
好像美国这里没有一类和二类的说法吧。听说过加强绝缘，附加绝缘和双重绝缘，高压测试的电压和这个是有关系的，看选什么绝缘了，也要看样品选这个高压测试的地方，测试时间就是一分钟，时间没有错的了。作者: wolfbloodjxl 时间: 2009-5-16 00:07
要区别对待。UL充电器的打法要安充电器的标准去做。我比如充电器就是1240作者: dyp 时间: 2009-5-18 13:25
ROUTINE TEST的电压值,时间以及漏电流的设置,都低于TYPE TEST的要求作者: cnshmike 时间: 2010-6-23 17:10
不知道美国是什么要求作者: ljh75 时间: 2010-6-24 17:07
对于美国所制定的要求，我想通常都为一些大厂所订出的，专欺压一些小厂用的。作者: longjianghua 时间: 2010-6-25 14:46
双重绝缘工具是打3750v，基本绝缘是打1250v。