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lxxcumt 发表于 2015-8-7 15:30 3 o4 X0 R8 n7 w, b6 R
首先提出以下条款要求:$ J7 o3 _+ ~9 ]( {1 W. ?. D
8.4.1 * PATIENT CONNECTIONS intended to deliver current
6 g( \+ o4 y/ f; c" sThe limits specifie ...
" P7 c7 O; \. }( h, C) W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:
* h' ?3 p% ]- T+ l: N" u" f; d7 \% ^standby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)8 a% s( d: X3 Z0 i; w
APPLIED PART in which the PATIENT CONNECTIONS are isolated from other parts of the& y2 D# A' l/ C8 s% B
ME EQUIPMENT to such a degree that no current higher than the allowable PATIENT LEAKAGE
. n! n" M; @9 k* qCURRENT flows if an unintended voltage originating from an external source is connected to- a0 j9 n) f, l0 V0 e
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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