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lxxcumt 发表于 2015-8-7 15:30 7 d' ?' b* Y! q" k& W) \: D
首先提出以下条款要求:$ c( J% g! E" w. c
8.4.1 * PATIENT CONNECTIONS intended to deliver current5 [% N& ]0 G/ ?) @2 c8 ~
The limits specifie ... % j/ X; _ {! G& \5 U+ q
首先纠正一下对于8.4.1的理解:功能电流确实没有限值要求,但是需要注意电流路径。对于FES,在激活输出时,功能电流是在各电极之间流动。漏电流是有要求的,只是测试时不要求激活输出,在standby情况下还是适用于通标中的漏电流限值要求。6 r) R0 [2 r5 j, s
4 ?' A5 R4 V- ~9 f3 {& A. Q* ~再说一下对于第2点的异议:
& ^. v( h( n1 C$ R& `8 Kstandby的情况下,还是需要控制漏电流。首先功能电流是在指定频率范围内,50Hz/60Hz/DC频率的漏电流对人体还是有危害,不可混为一谈。既然专标定义为F型应用部分,那就都需要满足F type applied part的要求。首先看一下F type applied part的定义:“F-TYPE ISOLATED (FLOATING) APPLIED PART (herein F-TYPE APPLIED PART)0 w" N3 o- {( A+ `4 |3 {) i' h
APPLIED PART in which the PATIENT CONNECTIONS are isolated from other parts of the$ s; d3 m& X2 s8 D4 `+ r" o
ME EQUIPMENT to such a degree that no current higher than the allowable PATIENT LEAKAGE0 k+ K1 L y! x- M) i3 K
CURRENT flows if an unintended voltage originating from an external source is connected to: E4 A! [9 z. `8 W2 h1 l, f
the PATIENT, and thereby applied between the PATIENT CONNECTION and earth”。 其实本质要求还是floating from earth. 内部供电的设备本身就是floating from earth的,这并不矛盾。
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