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本帖最后由 小二哥好 于 2016-9-27 15:31 编辑
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( g8 E3 C1 W; ^ e请教:$ c+ f, {" w5 q1 m2 H& \2 F
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?! o" g3 M1 K2 I& a
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。
% m0 c0 C( K* j 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?
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% B7 o2 a- j( E/ y 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。
& x' W" b8 b8 E标准条款:) B$ M/ i' J3 e$ r7 j/ j
8.5.1.1 General, c# N2 B% P4 o# H
ME EQUIPMENT shall have two MEANS OF PROTECTION to prevent APPLIED PARTS and other( U d# x! Y+ u# P( M
ACCESSIBLE PARTS from exceeding the limits specified in 8.4.
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8.5.2.1 * F-TYPE APPLIED PARTS
: g; G( [8 ]4 w1 i$ N; _2 ZThe PATIENT CONNECTION(S) of any F-TYPE APPLIED PART shall be separated from all other parts,
( P0 R1 o; E- p' q8 M6 Dincluding the PATIENT CONNECTION(S) of other APPLIED PARTS, by means equivalent to one
: V/ ?! }; g7 }& ]8 X& c) i1 k5 k) Z6 }' iMEANS OF PATIENT PROTECTION for a WORKING VOLTAGE equal to the MAXIMUM MAINS VOLTAGE
& R* ?+ ^% i) n D7 [and shall comply with the specified limit for PATIENT LEAKAGE CURRENT with 110 % of the
/ B1 U) s! p2 S6 B, U; uMAXIMUM MAINS VOLTAGE applied.- l B d O$ R% m. k0 N
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