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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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请教:
9 c2 M4 [7 j) G. r Y 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: N$ w1 K* l1 `# C0 W0 a6 t' `+ P+ }
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。 F. q) H% c. a# {
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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5 n9 }' M3 `+ a1 i, H 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。# v! B* ~/ B" G) f( y- P
标准条款:
( _2 }0 V; K6 u# W8.5.1.1 General
0 C) ~) W+ G V2 [! g- UME EQUIPMENT shall have two MEANS OF PROTECTION to prevent APPLIED PARTS and other( F }0 h$ G1 y, B, ` f! w/ o
ACCESSIBLE PARTS from exceeding the limits specified in 8.4.
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8.5.2.1 * F-TYPE APPLIED PARTS, M0 {$ {4 ^$ r, D$ m
The PATIENT CONNECTION(S) of any F-TYPE APPLIED PART shall be separated from all other parts,
( a1 x+ F+ y% O( t' uincluding the PATIENT CONNECTION(S) of other APPLIED PARTS, by means equivalent to one
+ T% N7 R5 b7 f+ cMEANS OF PATIENT PROTECTION for a WORKING VOLTAGE equal to the MAXIMUM MAINS VOLTAGE
/ I3 O" U/ u4 O$ y5 @$ ]and shall comply with the specified limit for PATIENT LEAKAGE CURRENT with 110 % of the
# a. Q9 o2 }" f1 {MAXIMUM MAINS VOLTAGE applied.3 R! H* p$ c# Y! d+ L. V& t
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