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lxxcumt 发表于 2015-8-7 15:30 g" H2 t1 M- L
首先提出以下条款要求:
3 Y8 v9 f9 G$ i/ n5 ^8.4.1 * PATIENT CONNECTIONS intended to deliver current/ g4 Q0 z( u/ L
The limits specifie ... % O4 J k" z* I- W% ^4 }" 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。
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再说一下对于第2点的异议:
! f' w1 d+ Q3 R" K9 r" j, dstandby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)2 d% O5 E! o% K6 z! g$ ]' Y* T6 @
APPLIED PART in which the PATIENT CONNECTIONS are isolated from other parts of the
5 L! L& ~1 A. I- l. F- t! a0 g$ _ gME EQUIPMENT to such a degree that no current higher than the allowable PATIENT LEAKAGE
, O, i3 x: Z, ]5 {# VCURRENT flows if an unintended voltage originating from an external source is connected to8 r9 n* [8 X/ p/ w' A7 w5 d# o
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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