|
首先要搞清楚Thermal motor protectors和你所说的热熔断体(thermal link)的概念% @, _7 S3 F* ?' N
thermal link定义:thermal cut-out which operates only once and requires partial or complete replacement
T/ C5 `: g- W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
; l$ l7 m( [& ~3 x 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, L* ^/ P" m: o3 q( A1 `
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.$ y* n7 ]8 v- i! ~5 g# }
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7 a+ T4 s% }6 E3 E1 j- E% e6 {
所以对于装有热熔断体的motor, annex D不适用
+ @- d( f! C4 }/ E |
评分
-
查看全部评分
|