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本帖最后由 小二哥好 于 2016-9-27 15:31 编辑 5 T( t, @& u! T: {9 }' F0 _
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请教:
& m1 I0 P r: @ 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?8 D1 t' Z( @3 h. {( Y! R8 }3 _# ?
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。2 X6 R9 y+ k% H. l. ]9 c# ~/ K9 n
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?! L5 C1 e$ h, o. }9 z
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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。
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8.5.1.1 General
3 O% {; g4 _9 gME EQUIPMENT shall have two MEANS OF PROTECTION to prevent APPLIED PARTS and other( k5 K) K1 b: O: K
ACCESSIBLE PARTS from exceeding the limits specified in 8.4.
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8.5.2.1 * F-TYPE APPLIED PARTS
0 Q( f* S* Q* G4 HThe PATIENT CONNECTION(S) of any F-TYPE APPLIED PART shall be separated from all other parts,
/ ^2 j: w- d2 N0 C. wincluding the PATIENT CONNECTION(S) of other APPLIED PARTS, by means equivalent to one
9 z) E7 C, A. O( n; U0 n5 EMEANS OF PATIENT PROTECTION for a WORKING VOLTAGE equal to the MAXIMUM MAINS VOLTAGE
8 c5 J; d9 H8 a* |$ @8 O0 H0 L* M$ Vand shall comply with the specified limit for PATIENT LEAKAGE CURRENT with 110 % of the4 a& D2 b/ X- z
MAXIMUM MAINS VOLTAGE applied.. m$ e, y$ b, U0 @' m5 A
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