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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; ]2 O* X9 N* B6 x3 b
thermal link定义:thermal cut-out which operates only once and requires partial or complete replacement
! F/ s0 H6 @+ {. ]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 protectors6 W# k9 c e4 K! r+ }# k* I
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,
4 B8 B# }% f6 z7 D: ino 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.- N3 P/ l' f3 s1 c
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
( Q E: V& l6 c9 U6 U) s所以对于装有热熔断体的motor, annex D不适用
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