|
本帖最后由 小二哥好 于 2016-9-27 15:31 编辑
: M) \3 ?, f E! ^8 X% Y5 M2 O* A! G) z
请教:7 O X: E" f! t# 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 ^" h1 c D) |8 }/ O9 a! u 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。, ^& a. {1 P! P7 \( `5 m% 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?
/ I; w* B4 X* S; h, L
7 Y- G3 O' A. q- ], p 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。
/ |6 r) H9 _* S" Y4 n标准条款:
$ i* b6 W1 l6 c, s8.5.1.1 General" ~: `8 a$ j4 u! Y3 N, v
ME EQUIPMENT shall have two MEANS OF PROTECTION to prevent APPLIED PARTS and other& ]2 B0 D5 M( e
ACCESSIBLE PARTS from exceeding the limits specified in 8.4. A5 D# j6 T# g" \3 c% b$ R
# W6 Y9 Z% [ o! T
$ M- F/ A3 i' c) E* G; l
8.5.2.1 * F-TYPE APPLIED PARTS0 m7 e( S! F M9 ]
The PATIENT CONNECTION(S) of any F-TYPE APPLIED PART shall be separated from all other parts,
- I: U- `! t3 w5 }: j5 Tincluding the PATIENT CONNECTION(S) of other APPLIED PARTS, by means equivalent to one8 A6 u" |. S/ ]8 H: H- w( \+ g4 Q" l
MEANS OF PATIENT PROTECTION for a WORKING VOLTAGE equal to the MAXIMUM MAINS VOLTAGE4 z( ^; p$ b! D/ ^" M1 A
and shall comply with the specified limit for PATIENT LEAKAGE CURRENT with 110 % of the! D2 D9 M0 e- S" ^
MAXIMUM MAINS VOLTAGE applied.
9 | X* Q8 @9 {, q2 e
! |( j7 I( |' q) ?4 k6 ]
, j) H' F. u5 u" f! C+ s |
|