安规网

 找回密码
 注册安规
安规论坛 | 仪器设备 | 求职招聘 | 国家标准 公告 | 教程 | 家电 | 灯具 | 环保 | ITAV 签到 充值 在线 打卡 设备 好友| 帖子| 空间| 日志| 相册
IP淋雨机 | 证书查询 | 规范下载 | 资质查询 招聘 | 考试 | 线缆 | 玩具 | 标准 | 综 合 红包 邮箱 打卡 工资 禁言 分享| 记录| 道具| 勋章| 任务
水平垂直燃烧机 | 针焰 | 灼热丝 | 漏电起痕
IP防水防尘设备|拉力机|恒温恒湿|标准试验指
灯头量规|插头量规|静风烤箱|电池设备|球压
万年历 | 距春节还有
自2007年5月10日,安规网已运行
IP淋雨设备| 恒温恒湿箱| 拉力机| 医疗检测设备ASTC+那尔|沙特SASO Saber GCC 埃及COC水平垂直燃烧机|灼热丝|针焰试验机|漏电起痕试验机
灯头量规|试验指|插头插座量规|灯具检测设备耐划痕试验机|可程式恒温恒湿试验箱 | 耦合器设备广东安规-原厂生产-满足标准-审核无忧
楼主: 李云峰

[线缆测试] 关于UL线缆测试的讨论贴!

[复制链接]
 楼主| 发表于 2007-8-20 17:50 | 显示全部楼层
广东安规检测
有限公司提供:
引用第47楼dzxtt于2007-08-12 13:24发表的  :
8 o- R0 O, h) L2 k/ B3 ?' O热延伸是否是线材老化后的伸长率呢?标准里有规定的啊
热延伸是针对材料的测试,不是老化后的伸长率,他是要求在一定的温度下对试样施加一定的机械负荷,等到规定的时间以后测量负荷下的伸长和撤去负荷的伸长,与原试样的长度之比!
发表于 2007-8-20 19:27 | 显示全部楼层
有的也叫加热变形试验-----实际与楼上李兄说的是一样的;
6 d; F2 ~( I, _例如--UL62规定:
4 N0 m& y  y2 o8 b& }* E3 `NMX-J-191/ b6 U1 Y( q6 p) R: @* S4 d
Heat Deformation of Semiconductive Shielding, Insulations and Protective Coverings of Electrical
  t) g0 e& B, z8 d- s" ?. GConductors – Test Method
* N# Q7 E3 _/ ^, T: t# G; ]6 X" @$ |& v9 M5 I& t
5.1.3 Deformation
8 [& u. Q3 ^  S5.1.3.1 Insulation
) T- V& G  M1 T. ^The insulation on single-conductor wires, and on the individual conductors (separated, in the case of1 V( b+ a0 X, J; A3 `3 B# E
parallel cords), shall not decrease by more than 50% in thickness when subjected to a force caused by a
8 P( X* t: J- tmass as shown in Table 40, and while maintained at the temperature shown in Table 40 for 1 h.- `, c$ {" o0 u" h8 d. E
5.1.3.2 Jacket! X. l' z- g# `6 E4 |, a
Smoothed specimens of jackets from finished cords and cables shall not decrease by more than 50% in
# F4 e# T5 A0 B6 ~. H! N! rthickness when subjected to a force caused by a mass of 2000 g, and while maintained at the temperature- p8 o" s! _% h# X8 e- t$ I
shown in Table 40 for 1 h.. L. y/ ?  r( u: k3 z0 \
5.1.3.3 Method# R5 L8 a1 j- v3 g
Compliance with Clauses 5.1.3.1 and 5.1.3.2 shall be determined in accordance with the method, O) S/ Q( Q8 J: k1 C/ L
described in CSA C22.2 No. 0.3, Clause 4.3.6.1; UL 1581, Section 560; or NMX-J-191-ANCE.
发表于 2007-8-29 13:28 | 显示全部楼层
有沒有誰比較了解HPN線材的耐電弧測試的呢?說說吧!
发表于 2007-9-10 16:53 | 显示全部楼层
引用第53楼wangrang于2007-08-29 13:28发表的  :. G" f0 J3 E5 Q) m0 p
有沒有誰比較了解HPN線材的耐電弧測試的呢?說說吧!
参照UL62 第 5.2.5~5.2.6条.UL62-2006版第49页.~呵呵~* y6 D0 Z! S) w
5.2.5 Standard arcing test for Type HPN6 K4 g& k4 }  B4 ^  b! l; B2 q
5.2.5.1 General1 k% ], k: R: O- T
Type HPN cord shall not arc when a specimen of finished cord is connected at one end to a 120 V (rms)& @  W% r- E" d- ^2 f2 ?: p/ }
source of supply through a 15 A fuse or circuit breaker and subjected to a standard test flame applied 13
' Q8 X) f9 a: P; u+ Ymm (0.5 in) from the other end of the specimen for 2 min. Compliance shall be determined in accordance
4 \& T& ]$ I1 x4 m& o( R# C$ ]4 ]) q, Mwith the method described in Clause 5.2.5.2; CSA C22.2 No. 0.3, Clause 4.28.12; or UL 1581, Section 1670.- O% R* l% G, ~3 |& Y" @& h
5.2.5.2 Test method
' M# p3 e8 i0 ~  {  R4 VThe specimen for test shall be of any suitable length. One end shall be cut off square, care being taken
( J) D6 n+ B- L$ [3 Y' ]that the conductor ends are flush with the cut end of the cord. The cord shall be laid across a
" s$ |( h+ I+ \6 m. H( vnonconductive surface, the square cut end protruding approximately 0.1 m (4.0 in) beyond the surface
; O2 U4 [7 Z# Y2 J: q/ z! Jedge. The opposite end shall be connected to the voltage source between the conductors of a  ~. {9 i) @$ w2 b% r2 M* a
two-conductor cord and between the circuit conductors joined together and the grounding conductor of a
: C$ p' j  q* C* S5 ythree-conductor cord. Using a Tirrill, Bunsen, or similar appropriate gas burner, a standard test flame (as
9 i3 T; P8 D& X( e8 ^described in Clause 5.1.5.1) shall be obtained. With its barrel vertical, the burner shall be placed under/ a! V- p6 ]* B5 {
the free end of the cord with the tip of the inner blue cone touching the flat underside of the specimen4 P( M5 m+ p+ y  g& t, m5 j( F; o" u. q
midway between the conductors and 13 mm (0.5 in) from the square end for a 2 min period. The cord: _0 X4 V2 a/ E& e/ A
does not comply if arcing occurs between the conductors during application of the flame or if the fuse or circuit breaker opens.
. L" p1 e! u2 l9 P; U1 T=======================
% D' B& K+ r4 g. j; k- C5 |: c5.2.6 Flex arcing test for Type HPN
& U2 G0 m9 d' `2 V4 E===========================6 j* a5 S* @3 N4 I0 {" G; g
5.2.6.2 Procedure
) ~" ^; u1 z" h5 ~9 g0 Z5 aThe procedure shall be as follows:~
发表于 2007-9-11 08:47 | 显示全部楼层
標準有看過,其實只是沒有看過具體的測試,有點抽象...% n% A% U  o- i$ j

1 z$ S8 W) g( t4 {& |! k+ w' L* `5 A呵呵,謝謝拉!
发表于 2007-9-11 11:20 | 显示全部楼层
我搞PVC电缆料,不知有什么可以帮上忙
 楼主| 发表于 2007-9-11 19:25 | 显示全部楼层
只要与UL电源线有关的测试疑问和经验,大家都可以在这里交流的!但是最重要的还是讨论实际测试方法和手段与标准的理解 !
发表于 2008-7-19 00:01 | 显示全部楼层
引用第43楼cableyzf于2007-08-10 14:31发表的  :! L" S! C7 G" v) ?8 t& |/ n
对,是最小截面积(最小厚度乘以宽度),平时都没注意。虽然UL1581没说,我查了一下JIS有规定最小厚度(JIS要求至少要测五个值)乘以宽幅得出截面积。检测标准这部分真的是越抠越细,所以这部分的讨论太重要了。谢谢版主!
# K9 ]* s% S. ?- d& L
UL1581中有规定的:在标志线处,标志线内6MM及19MM处共测试4点取最小值--440.24 The thickness of the specimen is to be taken as the smallest of four measurements to 0.001 inchor 0.01 mm, two of which are to be made at 1/2-inch or 13-mm intervals between the bench marks on oneedge beginning 1/4 inch or 6 mm from either mark, with the other two measurements being made at corresponding points on the opposite edge.
发表于 2008-9-8 20:40 | 显示全部楼层
对于UL 可能是我最熟悉不过的,我们公司实验室申请的UL758,UL62,UL1581的目击测试已于2008年9月15日完成.是全球唯一一家可以做目击测试的公司.刚来公司,希望和大家交流交流.
发表于 2008-9-11 15:58 | 显示全部楼层
学习学习,我才作过两个电线的案子。
您需要登录后才可以回帖 登录 | 注册安规

本版积分规则

QQ|关于安规|小黑屋|安规QQ群|Archiver|手机版|安规网 ( 粤ICP13023453-10 )

GMT+8, 2026-2-2 21:01 , Processed in 0.090524 second(s), 16 queries .

Powered by Discuz! X3.4

© 2001-2023 Discuz! Team.

快速回复 返回顶部 返回列表