|
|
是否是指UL499的18 Overcurrent Protection of Conductors and Heating Elements？
" {( h9 _ {! R, M9 o那个不是温度保险，是电流保险。
3 n9 u6 } S1 m' M( |; H9 N
* S3 Y( T- T" [' W9 N; }& {( _& m加拿大要求是：CAN/CSA-C22.2 No. 64-M91 (Reaffirmed 1999)
/ M2 K2 A A( E/ U& {' H4.13 Protection Against Overheating( f: T& Y( \ k ^
4.13.14 ^: W: D: ^8 ^) f* m
Unless they can operate safely when dry, appliances intended to heat liquids that may be inadvertently operated when dry shall be provided with a protective device or devices that will open the power supply or reduce the power input to the heating element to prevent unsafe temperatures from being attained when the appliance is operated at the test voltage under such abnormal conditions.
. i$ _1 Z2 q+ T3 MHeating elements shall not be considered as protective devices |
|
/2 
|关于安规|小黑屋|安规QQ群|Archiver|手机版|安规网
( 粤ICP13023453-10 ) 
窥视卡
雷达卡
发表于 2010-12-5 00:10
收藏
分享
好帖
鸡蛋
提升卡
置顶卡
沉默卡
喧嚣卡
变色卡
抢沙发
千斤顶
显身卡