& O, x. G2 v+ N" Z. H热熔体(thermal link):只能一次性工作,事后要求部分或全部更换的热断路器。4 z9 u$ E/ i1 V: a$ l- }
非自复位热断路器:要求手动复位或更换部件来懒得电流的热断路器。作者: wenqingqing 时间: 2010-10-27 15:52
首先第一个问题,热熔体(温度保险丝)是不是非自复位热断路器? 8 h! W$ ~- Z9 t. D) K( t5 |回答:( o# c% I+ Y3 C. ?/ J
非自复位热断路器的定义是: 2 ~. S1 x( g7 E& ^8 G& }1 ]# |3.7.5 non-self-resetting thermal cut-out $ y: }1 d2 s: v) @0 Lthermal cut-out that requires a manual operation for resetting, or replacement of a part, in order to restore the current / d& p" H& S4 O/ Z2 t/ u, }# b8 T8 Y9 D k
热熔体(温度保险丝)的定义是:3 k- E9 J! ~8 X3 n5 ^
3.7.7 thermal link7 Z/ w2 _4 e! r3 G& z" C/ l, x
thermal cut-out which operates only once and requires partial or complete replacement 5 g% v2 v; H2 T( J# P0 z+ B+ Q 9 O0 A- J& s* ?4 z比较可知,thermal link只是一种特殊的thermal cut-out(只动作一次且需替换), thermal link也符合non-self-resetting thermal cut-out的定义。再形象点,如果把thermal cut-out比作马,thermal link 属于母马而且还是白马的话,non-self-resetting thermal cut-out就是白马(包括公白马和母白马)。5 N) |- L: K7 A
N9 p' s7 ?/ E; X3 L第二个问题,热熔体(温度保险丝)是否要去加入7.12.6警告语?, e* ]! j I9 j! X5 n7 i
回答是不需要,因为它不是通过断电来重置的(热熔体需替换来重置)。 , v, q/ j# R0 C7.12.6 If a non-self-resetting thermal cut-out is required in order to comply with the % l& F. A7 S$ I% x/ D) x) Wstandard then the instructions for appliances incorporating a non-self-resetting thermal cutout + f) ]9 E# k) n/ Q0 y8 Y& gthat is reset by disconnection of the supply mains shall contain the substance of the : G$ B% K# F' Q5 W; e9 D7 Qfollowing:4 ^, ?" | Z5 ~+ p0 I( h
CAUTION: In order to avoid a hazard due to inadvertent resetting of the thermal cut-out,* o7 i( Z% E4 Z1 p* g, `% u
this appliance must not be supplied through an external switching device, such3 s% y, Q8 P9 W
as a timer, or connected to a circuit that is regularly switched on and off by the% `4 u% }; {2 Q+ z% ?
utility.作者: eley 时间: 2013-8-20 16:01
GB476.1 7.12.6 中“带有非自复位热断路器(通过切断电源复位)的电热器具”9 L( b6 _3 a: v& ^ k5 o
只有满足两点才适用:1.非自复位热断路器 2.通过切断电源复位。+ P6 E5 m* ]( n0 t% Z) Z
最近遇到一个产品,家用电热加湿机,用了这样的非自复位热断路器——当它达到设定温度动作后自身还会一直产生一定热量,保持它不会复位,需要通过切断电源或拨掉插头,冷却后才会复位。 4 x* p% U& g& U: K断路器的介绍见网页http://www.thermtrol.com/product ... or-protectors/sh7am8 Q- E& m3 n6 ^6 O) w9 O! ~: H4 ?