|
本帖最后由 小二哥好 于 2016-9-27 15:31 编辑
0 ]# N+ C/ s7 l: Y- L# A7 X8 x6 R3 @( f: T) a) e3 N5 R0 j- _! K* O& p
请教:* n2 F% Y! J+ y! C6 C1 f0 a' o" O
在做IEC60601-1:2012时,内部电路到外壳的爬电距离、空气间隙是否需要考虑?
+ B- n0 Z2 U) i" X 产品说明:适配器供电,初级AC240到次级DC15V。主机15V工作,但是由于功能需要,主机内部有变压器将DC15V转化为AC 70V(rms).应用部分与次级电路之间没有隔离,次级电路整个都算作是患者电路了。9 X6 `5 \5 N& S, H1 d5 p
次级电路到外壳(塑料外壳)之间的绝缘要求是否需要符合1MOPP,工作电压240V和2MOPP,工作电压70V的绝缘要求呢。测量的爬电距离的点是不是次级电路到外壳的缝隙处?" J, X8 D. \- @) E( K; T) W
+ C: E* ^7 K, E 应用部分是BF型的应用部分,次级与地是隔离的,整个外壳都是塑料外壳。
, G6 ]+ {9 Y2 h7 v" ?& u9 t标准条款:8 o- Z: X/ w" I( [: L2 M* k6 G
8.5.1.1 General) c$ B, V" _; l( H7 j
ME EQUIPMENT shall have two MEANS OF PROTECTION to prevent APPLIED PARTS and other
4 u( S7 E' | ^6 b4 q) DACCESSIBLE PARTS from exceeding the limits specified in 8.4.
! Z" R( y# B, O. n. }7 M, s0 l1 M( j( H* N- D/ N C, h
: _3 _. U: L! `8.5.2.1 * F-TYPE APPLIED PARTS
2 f i8 c3 v* v k, O" W# N6 o) B& GThe PATIENT CONNECTION(S) of any F-TYPE APPLIED PART shall be separated from all other parts,1 X. c" [- U" b5 R
including the PATIENT CONNECTION(S) of other APPLIED PARTS, by means equivalent to one
L K3 `& `( j* h2 g- |MEANS OF PATIENT PROTECTION for a WORKING VOLTAGE equal to the MAXIMUM MAINS VOLTAGE
, E1 M1 r( }) H" Q; t0 H" Oand shall comply with the specified limit for PATIENT LEAKAGE CURRENT with 110 % of the
% Z; Z* h9 h) v5 L4 QMAXIMUM MAINS VOLTAGE applied.
9 N/ o0 V+ F+ ^# V8 t: ]) l: X. R: Y3 t+ G+ C8 @9 K2 L( j, y
6 Z9 b! f) D# p u K5 J- i F
|
|