UL插头两芯和三芯分别用在什么电器上？

mrhqwf · 发表于 2011-11-1 10:58

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大家好！我想问一下，UL插头分两芯和三芯，分别是用在什么类型的电器上？是标准要求的还是客户要求？谢谢！

byl77 · 发表于 2011-11-1 11:18

分等级吧?class 1或者class 2或 class 3

aiduoxi · 发表于 2011-11-1 11:55

跟产品走的

水中月 · 发表于 2011-11-1 13:13

应该是看产品！

mrhqwf · 发表于 2011-11-1 13:20

煮蛋器，Class I，120V,350W，用什么UL插头？两芯还是三芯？

mrhqwf · 发表于 2011-11-1 16:44

老大们帮忙解决一下，谢谢了！！！

ouychp · 发表于 2011-11-1 20:26

外壳无可触摸的导电物体就用2芯，比如胶壳的充电器，外壳有可接触的导电物体就用3芯，比如铁壳的充电器

往事如烟 · 发表于 2011-11-1 20:30

一般I类电器，使用三芯；其它使用二芯。

ouychp · 发表于 2011-11-1 20:36

Class 1 Circuit. The portion of the wiring system between the load side of the overcurrent device or power-limited supply and the connected equipment. The voltage and power limitations of the source are in accordance with 725.21.
Class 2 Circuit.  The portion of the wiring system between the load side of a Class 2 power source and the connected equipment. Due to its power limitations, a Class 2 circuit considers safety from a fire initiation standpoint and provides acceptable protection from electric shock.
Class 3 Circuit.  The portion of the wiring system between the load side of a Class 3 power source and the connected equipment. Due to its power limitations, a Class 3 circuit considers safety from a fire initiation standpoint. Since higher levels of voltage and current than for Class 2 are permitted, additional safeguards are specified to provide protection from an electric shock hazard that could be encountered.
725.21 class 1circuit classifications and power source requirements.
Class 1 circuits shall be classified as either class 1 power-limited circuits where they comply with the power limitations of 725.21(A) or as class 1 remote-control and signaling circuits where they are used for remote control or signaling purposes and comply with the power limitations of 725.21(B).
(A) class 1 power-limited circuits.  These circuits shall be supplied from a source that has a rated output of not more than 30 volts and 1000 volt-amperes.
(1) class 1 transformers.  Transformers used to supply power-limited class 1 circuits shall comply with article 450
(2) other class 1 power sources.
(B) Cass 1 remote-control and signaling circuits.  These circuits shall not exceed 600volts the power output of the source shall not be required to be limited

mrhqwf · 发表于 2011-12-6 13:21

UL 3芯电源线最小的就是18AWG，晕，配上小小的煮蛋器，怎么看怎么别扭。做了样板了，客人看了也别扭，只好改2芯。

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