|
本帖最后由 小二哥好 于 2016-9-27 15:31 编辑
8 T/ S( M0 Y0 [* E& d4 w& v" k. ]) A, Q- o" [2 u
请教:) J& X1 D, R1 Z2 H/ R' 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?- ~5 O/ c' Z9 X' }' K2 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。4 m3 k* S, e+ a- Z6 ?, D, M
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?) b9 b% l' O% O3 p6 }
3 i* ^0 d$ o1 E5 A; G 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。" I2 k: U3 |" C
标准条款:% q( k7 }3 y" b9 ?. \$ x4 a6 ?0 H
8.5.1.1 General/ W3 t1 B( {2 o
ME EQUIPMENT shall have two MEANS OF PROTECTION to prevent APPLIED PARTS and other
, R4 |6 |* V0 b. z% U8 w ^ACCESSIBLE PARTS from exceeding the limits specified in 8.4.( M8 |* K# a6 N5 }2 D0 C
g; S; `9 ?. k: F
- ~, y' x( W5 C2 D8 j( X! K8.5.2.1 * F-TYPE APPLIED PARTS2 C, f3 ^" ]7 k9 \
The PATIENT CONNECTION(S) of any F-TYPE APPLIED PART shall be separated from all other parts,
( m! ~( N' J1 h/ G) J( k1 Oincluding the PATIENT CONNECTION(S) of other APPLIED PARTS, by means equivalent to one
9 ?* ^. h, P# B1 I) }& lMEANS OF PATIENT PROTECTION for a WORKING VOLTAGE equal to the MAXIMUM MAINS VOLTAGE% i9 a% z0 M; X. Y$ H* P3 K1 g
and shall comply with the specified limit for PATIENT LEAKAGE CURRENT with 110 % of the6 d5 X( E6 o1 u6 k% h$ R
MAXIMUM MAINS VOLTAGE applied." E, k, c1 A* B5 B1 r- ?
- `0 B$ G& a3 q# L8 F$ l( G6 }
( B% D$ T6 \2 P; t |
|