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
% |: E& M# S) ]6 o7 K* Binsulating sealing compound
Description mm
. S$ W) o2 f" z4 s7 DCreepage distance:
, J  ?8 l* r3 l/ F$ \1 between live parts of different polarity
; Q6 b- r, Z2 o$ Q1 v. V$ @  v2 between live parts and
– accessible surface of parts of insulating material
2 ^1 r9 }3 i  x# u9 D- ^– earthed metal parts including parts of earthing circuit
– metal frames supporting the base of flush-type socket-outlets
– screws or devices for fixing bases, covers or cover-plates of fixed socket-outlets
– external assembly screws, other than screws which are on the engagement face of plugs and
  l$ G) W& }3 O9 X% ?are isolated from the earthing circuit
4a
3
3
6 Z" X( ~9 j5 E- J/ \3
8 S' i6 _4 P! L% [/ C* h+ l$ ~3
4 t+ U2 ]+ m. ~/ ?0 f2 G: D1 W3
3 between pins of plugs and metal parts connected to them, when fully engaged, and a socketoutlet
3 \# a. S/ Q4 Kof the same system having accessible unearthed metal partsb, made according to the
6 |9 ?) x4 n) @4 [; }most unfavourable constructionc
8 z3 A# J9 d2 p6d
4 between the accessible unearthed metal partsb of a socket-outlet and a fully engaged plug of
$ ?2 h0 c# k3 K5 l9 b" L0 ]' lthe same system having pins and metal parts connected to them made according to the most
unfavourable constructionc
% \! a8 w' V. L1 j( J) K) z/ [' Y6d
5 between live parts of a socket-outlet (without a plug) or of a plug and their accessible unearthed
or functional earthed metal partsb
" z# M8 ~) i3 T' T6d
+ @1 F2 C, ~5 c/ |  j3 k# z5 YClearance:
' w, {9 p% v7 x: Y1 q" _+ \6 between live parts of different polarity 3
' i. q' I) a$ D- n5 v# a" c6 Z7 between live parts and
– accessible surface of parts of insulating material
– earthed metal parts not mentioned under items 8 and 9 including parts of earthing circuit,
, z% j) h" D  r+ l+ N– metal frames supporting the base of flush-type socket-outlets
' E- F" u+ o- y4 d5 H– screws or devices for fixing bases, covers or cover-plates of fixed socket-outlets
– external assembly screws, other than screws which are on the engagement face of plugs and
are isolated from the earthing circuit
8 between live parts and
– exclusively earthed metal boxese with the socket-outlet in the most unfavourable position
– unearthed metal boxes, without insulating lining with the socket-outlet in the most unfavourable
- b2 c4 ~- V( ?) }7 \. ~, Oposition
– accessible unearthed or functional earthed metal partsb of socket-outlets and plugs
7 {7 [2 ~  t- ]$ |8 p  T9 between live parts and the surfaces on which the base of a socket-outlet for surface mounting is
mounted
10 between live parts and the bottom of any conductor recess, if any, in the base of a socket-outlet
" k9 R( i# q0 J" bfor surface mounting
) {/ W4 a% @& h2 g8 U+ ?3
3
3
! k5 ?( C4 i4 J0 |3 o1 e* z3
3
3
8 V% l8 M9 v3 E4,5
2 J7 ]7 Y( p2 z" w# Q6
6
  f% r6 B3 B' D3
! \0 C: \$ }* ]  Y) v1 P: W1 aDistance through insulating sealing compound:
, _' P+ J. S! {11 between live parts covered with at least 2 mm of sealing compound and the surface on which
the base of a socket-outlet for surface mounting is mounted
12 between live parts covered with at least 2 mm of sealing compound and the bottom of any
conductor recess, if any, in the base of a socket-outlet for surface mounting
+ W' p; g3 S1 r  f9 R9 }4a
2,5
a This value is reduced to 3 mm for accessories having a rated voltage up to and including 250 V.
/ X. @5 a& F" A; Fb With exception of screws and the like.
c The most unfavourable construction may be checked by means of a gauge which is based on the standard
: {: ~7 n0 m/ bsheets 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.
  P6 d3 }1 t7 }7 L# e; C/ N/ ee
3 \: d- r; m% A
7 V: M4 g/ q; j( W, Y) V, L
# T0 M, r, t% V1 g4 R) M5 c' L
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？
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。
对固定固定式插座的底座、盖或盖板的螺钉或其它装置，
/ M) [, Y( z) v' Q9 {4 A" G% m盖或盖板的固定螺钉一般在外部了，通常可触及，需考核，
1 h5 d, V0 [% X- G; |" W! S( P" \8 Y对固定底座的螺钉，虽然在内部，
  m0 G9 }8 g2 m4 _# o' k1 A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，
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。
6 d" e- I* X2 P6 g  b2 N8 E  w) P3.14.10.1 General
Socket-outlets shall have degree of protection IP2X when installed in accordance with
; K: p; B# n& c( I/ y2 Hmanufacturer’s instructions, to the extent that this degree of protection shall cover access to
live parts and mounting screws for mounting brackets or wall boxes.
" U! ]- \( l+ {
0 h$ Q! _0 t8 k) C6 Q& lThe degree of protection shall comply with the appropriate requirements of AS 60529.
3 }) O- f9 Q% b# Q; l% W$ WNOTES:
1 Degree of protection IP2X does not preclude higher degrees of protection.
. P9 r/ u/ J* A- _8 ~2 F0 i2 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。
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。
6 \. C7 P2 Z: |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