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lxxcumt 发表于 2015-8-7 15:30 
: |( D) S; Z* F, A7 D& t6 z% V- x首先提出以下条款要求:& i) Q( R7 |7 H, T- I. ]6 \% V! t
8.4.1 * PATIENT CONNECTIONS intended to deliver current# S3 H9 c' g1 W- ]) F
The limits specifie ...
0 p! I$ M9 E5 f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。
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再说一下对于第2点的异议:
8 F, k: v( {; @) S" T K' wstandby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)' w" g" W4 Q- {" ?
APPLIED PART in which the PATIENT CONNECTIONS are isolated from other parts of the
3 P1 B1 O0 h. e; C4 x5 h3 _6 N- E' AME EQUIPMENT to such a degree that no current higher than the allowable PATIENT LEAKAGE
, C& c4 I* M9 RCURRENT flows if an unintended voltage originating from an external source is connected to
% N( g2 G) o$ ?% D0 dthe 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。! [4 F2 N0 c0 a9 J1 N
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