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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
, H" K* C! F) p% r l+ mthermal link定义:thermal cut-out which operates only once and requires partial or complete replacement7 W) ]* d4 X# l- I
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
, |, t, S" @0 Y6 d& v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,5 U/ ~5 {; T% u
no 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.4 a3 q8 B, Z- V6 ]/ g8 ?$ p y
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2 _: M+ Q: x& d8 J# t
所以对于装有热熔断体的motor, annex D不适用 \, G$ b+ P3 ?+ P2 d ?# N6 Y3 z
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