有关IEC60884－1中电气间隙与爬电距离的规定

johnmark

广东安规检测
有限公司提供：

小型摆管淋雨试验机

IPX5X6X7喷水试验机

1000L恒温恒湿箱

各种试验指现货

可程式恒温恒湿试验箱

水平垂直燃烧机

自动卷线器试验机

耐划痕试验机

各种灯头量规现货

灼热丝试验机现货

GB1002插头量规

IPX1-X7淋雨现货

IEC61347/UL935镇流器热试验箱

灯具防风罩

IK冲击试验机

UL498插头插座量规

VDE0620插头插座量规

稳定性试验台

家电温升测试角

针焰试验机现货

热电偶焊机现货

家电125mm试验指

E12灯头量规

无绳壶无绳电熨斗插拔寿命试验机

IEC60335试验指甲

Table 23 – Creepage distances, clearances and distances through
insulating sealing compound
) Q5 m% C' t5 _Description mm
Creepage distance:
1 between live parts of different polarity
2 between live parts and
! K5 C! J% x( i+ k! f– accessible surface of parts of insulating material
– earthed metal parts including parts of earthing circuit
# _$ _; V9 M$ X2 P– metal frames supporting the base of flush-type socket-outlets
6 b2 c6 s) W' J0 p, I( Y& \4 `) X– 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
, |& a6 u5 {; H4a
3
) ~! M9 q% \. K' N( Z3
3
4 E+ m5 \1 ]1 X7 b( L3
$ }% S8 v8 ~7 c; {& x3
. w1 @2 V  h! O4 x) N) D' {( n3 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
* y6 G3 H/ p) L2 V' s  Z5 ~most unfavourable constructionc
6d
4 between the accessible unearthed metal partsb of a socket-outlet and a fully engaged plug of
the same system having pins and metal parts connected to them made according to the most
unfavourable constructionc
6d
0 [  \  ?& ]# g/ Y2 @! y1 {6 X, M5 between live parts of a socket-outlet (without a plug) or of a plug and their accessible unearthed
: e4 e5 e0 p3 l9 R5 O" Xor functional earthed metal partsb
6d
Clearance:
6 between live parts of different polarity 3
$ G$ a, ?. c, w! Y9 h, r6 ]0 C7 between live parts and
8 c5 c' k5 h2 j# X, G– accessible surface of parts of insulating material
; `. I+ B- `, C8 m& p) P0 E6 x– earthed metal parts not mentioned under items 8 and 9 including parts of earthing circuit,
) f2 y. i( J$ |! P4 L! |/ c& ~  ?– 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
are isolated from the earthing circuit
. b! a2 k+ X. K  X! h9 ~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
position
: P, q) l+ `, j+ ]$ F– accessible unearthed or functional earthed metal partsb of socket-outlets and plugs
2 E- l* [: ^# S- m: {0 p! W; L9 between live parts and the surfaces on which the base of a socket-outlet for surface mounting is
  s# V" _; t" j* Y" Q2 z; S- c. }mounted
10 between live parts and the bottom of any conductor recess, if any, in the base of a socket-outlet
for surface mounting
3
% R) `+ o( E* X! ~3
3
3
7 l5 f2 e+ c+ Z( Z' u1 J2 i3
& r2 d! D" W4 L+ F: j8 b+ J0 D3
4,5
6
, I2 j0 g" ]7 p6
3
Distance through insulating sealing compound:
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
1 }* h  p0 U' g9 k5 e* I12 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
" W7 k! i. A  l& Z2 S; Y3 q4a
2,5
a This value is reduced to 3 mm for accessories having a rated voltage up to and including 250 V.
' g+ K8 A8 V0 Ob With exception of screws and the like.
% H. V; [, j0 w# n" R  Wc The most unfavourable construction may be checked by means of a gauge which is based on the standard
sheets relevant to the system concerned.
5 C2 ~$ ?2 S( `' W' Yd This value is reduced to 4,5 mm for accessories having a rated voltage up to and including 250 V.
2 U( r! p6 O+ p( g: E, n/ |e
5 F/ R) u/ l, b7 p" S

" u0 e' S- y( [5 [7 Z5 }& Q+ V6 O
其中2 between live parts and screws or devices for fixing bases, covers or cover-plates of fixed socket-outlets
/ o- J7 l( A) a- B! K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。
+ m9 b3 l1 h* Q# v3 K) a7 A' p. d对固定固定式插座的底座、盖或盖板的螺钉或其它装置，
盖或盖板的固定螺钉一般在外部了，通常可触及，需考核，
对固定底座的螺钉，虽然在内部，
( }% i% Y8 c/ w; s  m0 R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，
- r5 h$ m9 U) _. Q) t1 h* \8 z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。
  [2 X7 S% v2 C( @0 O) Y$ M3.14.10.1 General
& D6 d0 j( q7 USocket-outlets shall have degree of protection IP2X when installed in accordance with
; P; ?5 d5 t% Z  @, e, f. dmanufacturer’s instructions, to the extent that this degree of protection shall cover access to
% l4 z: [; g. E3 x; [2 v' Mlive parts and mounting screws for mounting brackets or wall boxes.
9 f& p, l" _/ P3 ~; b% p
The degree of protection shall comply with the appropriate requirements of AS 60529.
% @7 m4 p" [+ c" Q* ?5 z& o  s: @0 QNOTES:
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
! ?7 d% b, M( Amay 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。
0 I  f: i' F2 N7 v0 s( f4 l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。
' ~& l! j5 I, {' a4 Y在这里想知道大家是如何看待这事的。
! Y, g  t9 w, d希望大家谈谈自己的看法。

jiejie

英文东东看不懂