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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( t. Z# Y) c Y! p
thermal link定义:thermal cut-out which operates only once and requires partial or complete replacement; [0 p7 a. s& b6 x
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
- Q- y( Y ^5 E4 ?8 r# { ?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,
; ^0 Z. @* j2 U9 ^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.
. I0 \" R2 q$ v: }" i8 n. F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3 }) u4 ~: r3 d& A1 J
所以对于装有热熔断体的motor, annex D不适用
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