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lxxcumt 发表于 2015-8-7 15:30 
, m5 E+ p- w. d$ |9 z% l" e首先提出以下条款要求:, I& e( ^2 X1 O, S. ]- Q" n
8.4.1 * PATIENT CONNECTIONS intended to deliver current8 r# ^+ ?. `' w
The limits specifie ... , ]5 Z% I* e8 }: \. ^% g# c1 P
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。# G4 v6 }" m, T+ _2 ~5 Y7 ?
; t! Q1 V/ Q& Y& K再说一下对于第2点的异议:
2 X4 l5 B* X- t, y' Nstandby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 G1 o" J* t, c
APPLIED PART in which the PATIENT CONNECTIONS are isolated from other parts of the
! }, T! A4 B i3 v6 lME EQUIPMENT to such a degree that no current higher than the allowable PATIENT LEAKAGE
, {* a( X7 T8 t; L4 O1 {" r2 \2 pCURRENT flows if an unintended voltage originating from an external source is connected to8 d1 ^( k$ w7 N) x
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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