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
Description mm
3 R- o3 V9 s$ b% T6 S9 s$ ]Creepage distance:
1 between live parts of different polarity
; U& [+ c5 m4 c; W  I9 K  l, A2 between live parts and
2 Y  N3 ~, o- A9 G6 J– accessible surface of parts of insulating material
– 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
0 f7 e/ F" E. g* N– external assembly screws, other than screws which are on the engagement face of plugs and
are isolated from the earthing circuit
4a
9 S4 F& d) s9 N, D3
7 M% H+ Y2 S6 y2 f: N7 E3 A; t3
+ L& U, U( r' D1 y" J+ t3
3
% p4 Q, J% k: h8 |3
3 between pins of plugs and metal parts connected to them, when fully engaged, and a socketoutlet
2 a8 _0 r. r0 D3 U# {of the same system having accessible unearthed metal partsb, made according to the
! q- t; E# W' M% ?; Wmost unfavourable constructionc
, ]' ]7 a* Z3 T- ^/ w6 C# R: }4 z6d
' k. Q- W5 g# ]1 ~4 between the accessible unearthed metal partsb of a socket-outlet and a fully engaged plug of
+ F) S! c( ^/ H6 o9 l( E( d/ lthe same system having pins and metal parts connected to them made according to the most
. C$ p& g0 @0 f6 g; Z2 junfavourable constructionc
9 A9 ~$ _, t8 l1 Y6d
( Z/ S3 R2 q7 I5 F, @5 between live parts of a socket-outlet (without a plug) or of a plug and their accessible unearthed
or functional earthed metal partsb
# R& n. a8 I, X# w2 K6d
Clearance:
6 between live parts of different polarity 3
! q" X2 Q! W& R9 Z: o7 W& K7 between live parts and
' ?. U/ D3 N% T– accessible surface of parts of insulating material
. |# ~$ B, {! K3 C5 \: h– earthed metal parts not mentioned under items 8 and 9 including parts of earthing circuit,
– metal frames supporting the base of flush-type socket-outlets
3 y  _1 R  B/ y! F) i– 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
5 P( R9 Q9 V; H. P& f* J8 between live parts and
– exclusively earthed metal boxese with the socket-outlet in the most unfavourable position
' `3 @) f5 ~1 ~7 L, g  P0 j7 F: \– unearthed metal boxes, without insulating lining with the socket-outlet in the most unfavourable
position
– accessible unearthed or functional earthed metal partsb of socket-outlets and plugs
- p4 n9 o7 H# i$ K* R2 Z0 |9 between live parts and the surfaces on which the base of a socket-outlet for surface mounting is
' ^# o/ o" e" D1 h# X. g( Wmounted
% }3 H& p: X1 A1 v, G; v$ f0 w. \9 m10 between live parts and the bottom of any conductor recess, if any, in the base of a socket-outlet
' T" o% x+ r6 c1 f6 p5 J) ofor surface mounting
8 r8 p; Q- e: U3
# e5 ]# w6 X  N% U1 a4 j% ~& X3
3
3
# k" }0 i/ ]" M8 [3 y3
3
: T4 y6 G6 P; A  G( x4,5
6
6
5 a% ?0 x! J& ?3
- l% e% M3 B' L0 ~Distance through insulating sealing compound:
2 f  n8 _/ `; K2 w11 between live parts covered with at least 2 mm of sealing compound and the surface on which
5 u% y* `/ h; a4 V) Sthe 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
4a
# u: P6 s. q7 U9 }. B/ i2,5
a This value is reduced to 3 mm for accessories having a rated voltage up to and including 250 V.
* e" g- m2 m% x3 ?' Z% E$ Cb With exception of screws and the like.
: b0 g7 H5 Q2 e) t. X+ P; V, Cc The most unfavourable construction may be checked by means of a gauge which is based on the standard
) t7 H# E* G) Y0 V' Tsheets relevant to the system concerned.
+ ?- ^; O. q5 ?% b3 g4 Ad This value is reduced to 4,5 mm for accessories having a rated voltage up to and including 250 V.
4 ]7 C6 h$ \) Y' q8 ke
4 B5 K; O! _4 ~

# M- e. P: E1 @) M" i& d
% S2 w& {4 ~4 `0 I2 C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？
+ ~3 C+ ^1 y' R) _/ y! p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，
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，
' D9 f. i% B. t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，
& D$ a- j  w/ i% H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。
8 }9 k6 t4 t  i3 y% x8 u3.14.10.1 General
Socket-outlets shall have degree of protection IP2X when installed in accordance with
% X! ^( V4 I) I# N/ h, ~manufacturer’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.
8 G" z6 q: D( n; S- S) u
: d+ N8 H  N% w8 @  L. T& |The degree of protection shall comply with the appropriate requirements of AS 60529.
, `; ^, k# W8 I2 w* UNOTES:
$ L$ |& A( H4 x6 F1 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。
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