有关IEC60884－1中电气间隙与爬电距离的规定

johnmark

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Table 23 – Creepage distances, clearances and distances through
insulating sealing compound
Description mm
Creepage distance:
1 between live parts of different polarity
$ l" N1 B) ?1 o8 ^! b9 R. v7 A* b9 t2 between live parts and
# c6 T' [+ a4 N: K$ A– accessible surface of parts of insulating material
– earthed metal parts including parts of earthing circuit
6 ^  e$ G! a/ s7 ?– metal frames supporting the base of flush-type socket-outlets
; m+ w$ w7 h" E– screws or devices for fixing bases, covers or cover-plates of fixed socket-outlets
' f# I& o7 G8 |, C5 _! P– external assembly screws, other than screws which are on the engagement face of plugs and
are isolated from the earthing circuit
4a
* _- z; q% z6 B5 |3
4 S) S+ \1 @% C) x8 v- }0 T+ m3
" N* H) [3 S& [0 l" V9 U1 p3
( A; y" T% V: h9 `- N3
# I' v' E$ Q. B# r& b, O9 p3
- n; r7 T0 S3 N8 _7 x3 between pins of plugs and metal parts connected to them, when fully engaged, and a socketoutlet
of the same system having accessible unearthed metal partsb, made according to the
most unfavourable constructionc
. o" c0 _3 T0 N4 v5 ^, @! v8 c" ]. B; Q6d
" R' e  Y; C& H( I- @/ P4 between the accessible unearthed metal partsb of a socket-outlet and a fully engaged plug of
3 l; L. j  C9 N" T' H) Ithe same system having pins and metal parts connected to them made according to the most
unfavourable constructionc
6d
5 between live parts of a socket-outlet (without a plug) or of a plug and their accessible unearthed
- n+ n) x8 m4 t+ v. }6 h9 tor functional earthed metal partsb
6d
, j" ~" D2 ?3 s% W' C; A; ZClearance:
' n+ I, C0 e# }6 between live parts of different polarity 3
5 i& I/ |& A! ~5 m8 c  W  {: H9 z7 between live parts and
( l5 U3 U% H; Z# M* i– accessible surface of parts of insulating material
– earthed metal parts not mentioned under items 8 and 9 including parts of earthing circuit,
0 u+ a- B& \% u7 b– metal frames supporting the base of flush-type socket-outlets
– screws or devices for fixing bases, covers or cover-plates of fixed socket-outlets
8 m- F+ h6 u7 e* a& b: I– external assembly screws, other than screws which are on the engagement face of plugs and
) n% R" X. E; a6 D, _are isolated from the earthing circuit
8 between live parts and
  G1 M5 Q" }4 X) x– exclusively earthed metal boxese with the socket-outlet in the most unfavourable position
, U% e6 y8 W2 E% p; U! @– unearthed metal boxes, without insulating lining with the socket-outlet in the most unfavourable
7 |) Q) ~% m$ T4 l. s& fposition
; x. w9 s% ]! g  e1 R– accessible unearthed or functional earthed metal partsb of socket-outlets and plugs
9 between live parts and the surfaces on which the base of a socket-outlet for surface mounting is
mounted
; ^# K! ^5 d' V  `% N9 a% i" o' l1 q10 between live parts and the bottom of any conductor recess, if any, in the base of a socket-outlet
for surface mounting
* C! O( A* \* ~1 Y- w0 C3
$ d' E% S+ x5 I8 ~" x3
) V1 P) h- }& w  v3
* s3 Q3 m: s) J/ ~6 b+ `1 \& l5 {3
3
6 I* d; f: `5 `3
  b3 Y& R6 N( G3 U( x3 R# m' D4,5
6
) O7 t7 I7 y& W- `6
3
( x8 r$ N% `; WDistance through insulating sealing compound:
11 between live parts covered with at least 2 mm of sealing compound and the surface on which
; _1 B5 y2 l9 ]$ y% d3 sthe base of a socket-outlet for surface mounting is mounted
: U' k5 T* f) ]# e3 `/ X3 \- ~12 between live parts covered with at least 2 mm of sealing compound and the bottom of any
& w7 L% m$ |! N, f0 e- y/ oconductor recess, if any, in the base of a socket-outlet for surface mounting
# t9 ]- Z  E7 @4a
0 O1 {% W& U* ~2 d6 T# S2,5
a This value is reduced to 3 mm for accessories having a rated voltage up to and including 250 V.
! g' N, R, p- U9 E3 J) Y6 X! Jb With exception of screws and the like.
" t1 U3 L! k9 L3 ]+ {c The most unfavourable construction may be checked by means of a gauge which is based on the standard
; ~7 m* P% B( F8 k, \; Y6 X) ~- Psheets relevant to the system concerned.
d This value is reduced to 4,5 mm for accessories having a rated voltage up to and including 250 V.
e


9 {5 Q: V6 U- k& q4 l/ U
其中2 between live parts and screws or devices for fixing bases, covers or cover-plates of fixed socket-outlets
这句应该如何理解？
如果螺钉是在产品内部，在外部无论如何也是接触不到的，也要满足此要求吗？
+ [$ j# ?* b7 [/ |4 H+ l- H比如此螺丝在内部固定产品的装饰部分，外壳的固定采用的是可以满足此要求的。

孟云房

我觉得是要考虑的。
" t9 A  \% |6 w* ?; c对固定固定式插座的底座、盖或盖板的螺钉或其它装置，
* o% ^/ `8 P5 F6 E9 z盖或盖板的固定螺钉一般在外部了，通常可触及，需考核，
2 L9 e% c& x  X. h# Q; T对固定底座的螺钉，虽然在内部，
( W( o9 I' V# m7 k0 P* ~$ p" M如果参照AS/NZS 3112注2的说法，有可能把底座固定到一未接地金属上，
" q+ ~( E+ ]. F5 j! }而这个金属可能是可触及的，
虽然在内部，还是需要考核的；
比如此螺丝在内部固定产品的装饰部分，外壳的固定采用的是可以满足此要求的，这个应该不要求了吧。
9 U9 I8 l9 I& z+ H8 O2 k3.14.10.1 General
Socket-outlets shall have degree of protection IP2X when installed in accordance with
manufacturer’s instructions, to the extent that this degree of protection shall cover access to
$ w' }) m% N0 @4 L+ ~) Flive parts and mounting screws for mounting brackets or wall boxes.
, U8 B9 U% e* X3 k  h, k
The degree of protection shall comply with the appropriate requirements of AS 60529.
, L5 t) K/ r+ INOTES:
1 Degree of protection IP2X does not preclude higher degrees of protection.
2 The extent of the degree of protection IP2X is intended to cover a situation where a socketoutlet
may be mounted to a bracket or enclosure which is not ‘earthed’.

johnmark

这个问题以前向一位同事询问过，同事建议说可以将此螺丝当作导电体的一部分，如果不有影响的话就不会有问题。
. d+ A% A2 }6 Y我个人觉得这种说法很对，但IEC　60884－1中有这样的规定，如果这样做万一认证公司判为不合格就麻烦了，所以不敢这样做。
在这里想知道大家是如何看待这事的。
希望大家谈谈自己的看法。

jiejie

英文东东看不懂