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首先要搞清楚Thermal motor protectors和你所说的热熔断体(thermal link)的概念' U! K+ }' c' K0 H3 v# v
thermal link定义:thermal cut-out which operates only once and requires partial or complete replacement; r/ U3 S4 q2 B
在标准中并没有直接对Thermal motor protectors的定义, 且Thermal motor protectors在 annex D里面分为 self-resetting thermal motor protectors 和no self-resetting thermal motor protectors& `" ^) U& x3 v, t( d
但是我们可以参考标准中对于self-resetting thermal cut-out和 no self-resetting thermal cut-out的定义,
8 q, x. D1 Q7 J8 j! A% k9 Qno self-resetting thermal cut-out定义:thermal cut-out that requires a manual operation for resetting, or replacement of a part, in order to restore the current.
0 |8 U- e" J/ q( Q7 O" M/ X/ |5 j从定义中可以看出热熔断体(thermal link)和非自复位热断路器(no self-resetting thermal cut-out)是两个不同的保护器件, 所以热熔断体自然也不能和no self-resetting thermal motor protectors等同
# d$ Y, p* X9 ?2 k所以对于装有热熔断体的motor, annex D不适用; n" n, e, Y! _/ D% j3 z& c; E
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