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lxxcumt 发表于 2015-8-7 15:30 
/ t; R! l! T7 W) @- |2 T; p首先提出以下条款要求: r. Y8 M3 T5 m1 ^( c, ^$ Y1 a
8.4.1 * PATIENT CONNECTIONS intended to deliver current! M. T$ o: T: a7 T6 s
The limits specifie ... ) ?" l6 m" s1 P' _8 M8 C3 [
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。2 v3 |. i( {5 Z1 p. }+ n& K
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再说一下对于第2点的异议:
% a5 T2 A/ N \' M! M; U2 c" X$ fstandby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)
1 Y8 X# h! g2 Q+ N9 V xAPPLIED PART in which the PATIENT CONNECTIONS are isolated from other parts of the' D( j- g# q5 B, r- t
ME EQUIPMENT to such a degree that no current higher than the allowable PATIENT LEAKAGE0 R f7 P" y9 |4 B' ^' }. d1 I. Y; s
CURRENT flows if an unintended voltage originating from an external source is connected to: P2 H: a, g1 O$ G0 j' i( B
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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