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本帖最后由 小二哥好 于 2016-9-27 15:31 编辑 ) _! S- [4 F7 y6 c8 N% p
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请教:
, `0 g. l" k1 f- x4 y4 | 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 J, j8 S2 z& P8 [& c 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。
0 R2 D4 O& m3 X% w6 z 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? g' d% y5 C$ u, X1 K
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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。3 H1 F, S2 V5 w, E
标准条款:
3 o/ S! ^) F4 k( r) s a* h# Z- r8.5.1.1 General
/ N0 [- }5 O+ N. R$ nME EQUIPMENT shall have two MEANS OF PROTECTION to prevent APPLIED PARTS and other
1 _9 F6 H2 }& o) b J1 @ACCESSIBLE PARTS from exceeding the limits specified in 8.4.
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/ s7 \/ C/ B! ^/ R p1 U1 t& g; C0 _" \4 C8.5.2.1 * F-TYPE APPLIED PARTS5 c6 n/ p! Q6 X0 a( r+ G0 ^
The PATIENT CONNECTION(S) of any F-TYPE APPLIED PART shall be separated from all other parts,
/ _8 H7 p0 G' U' N; xincluding the PATIENT CONNECTION(S) of other APPLIED PARTS, by means equivalent to one
. P `7 N7 n4 k' TMEANS OF PATIENT PROTECTION for a WORKING VOLTAGE equal to the MAXIMUM MAINS VOLTAGE& a/ f' D% K/ O6 e& O' x; w6 ?
and shall comply with the specified limit for PATIENT LEAKAGE CURRENT with 110 % of the/ E. w7 g5 s6 Q. S$ w
MAXIMUM MAINS VOLTAGE applied.8 S' w$ F6 o( V* l4 q
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