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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( j S' G9 {3 g* Q$ S: h
thermal link定义:thermal cut-out which operates only once and requires partial or complete replacement% U4 i! O$ ]* G6 z8 T* t) P3 U
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
+ ~1 V. n( d$ o8 @) _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,
) \7 H8 Y) r5 {" yno 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.
; C0 `! Q. h+ ~' B* M5 w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4 }+ c1 s( q% u/ W6 y7 l+ q2 M0 E
所以对于装有热熔断体的motor, annex D不适用0 o2 F$ ^# ^5 v) x g1 u
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