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 | 距劳动节还有
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  :$ G! m6 D& }- P- L1 e
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;" R  ^2 v5 W& G
例如--UL62规定:
; t) g3 a4 W) _, Z$ C" K/ CNMX-J-1918 `; d+ M$ K& S" V9 r) P7 f: Z
Heat Deformation of Semiconductive Shielding, Insulations and Protective Coverings of Electrical
/ W% L) O/ D7 Z1 yConductors – Test Method
: s: s- w& r. @( \1 n% S
/ T7 a0 G3 |! O# U3 H5.1.3 Deformation  c$ |. K& X% o6 E  n2 T
5.1.3.1 Insulation
1 D$ y/ W$ i( j& m8 O- {$ i  \The insulation on single-conductor wires, and on the individual conductors (separated, in the case of
, a7 J; x2 u& ^parallel cords), shall not decrease by more than 50% in thickness when subjected to a force caused by a
5 E6 d* w, N5 Nmass as shown in Table 40, and while maintained at the temperature shown in Table 40 for 1 h.
! n" z7 g9 q& Y  P+ ^9 ?5.1.3.2 Jacket
& M% e$ \. _+ q7 ~Smoothed specimens of jackets from finished cords and cables shall not decrease by more than 50% in/ y$ e# ^) }+ M! y2 m$ D
thickness when subjected to a force caused by a mass of 2000 g, and while maintained at the temperature( e* M& p, z) m" G% [2 u1 q3 Q6 w( s4 @
shown in Table 40 for 1 h.# Z. m: M1 `5 z1 K7 I4 A
5.1.3.3 Method
7 B2 ]+ j8 l+ r; C9 f7 qCompliance with Clauses 5.1.3.1 and 5.1.3.2 shall be determined in accordance with the method, c, s& m1 E, C& ]
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  :
1 A/ x9 n8 r# x1 ^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~
1 A# G: @( r; K! U& P) P5.2.5 Standard arcing test for Type HPN
2 T2 _) o7 B* G% a) M. E3 }4 Y" _5.2.5.1 General2 r) ?9 Q  k& A0 L$ i+ x
Type HPN cord shall not arc when a specimen of finished cord is connected at one end to a 120 V (rms)
5 T, {! Q; @+ x! Gsource of supply through a 15 A fuse or circuit breaker and subjected to a standard test flame applied 13
/ C. ^4 a" _  a& I2 X; l0 smm (0.5 in) from the other end of the specimen for 2 min. Compliance shall be determined in accordance
. w2 s( F" i$ `: B5 C. fwith the method described in Clause 5.2.5.2; CSA C22.2 No. 0.3, Clause 4.28.12; or UL 1581, Section 1670.
3 g9 z! O# W( ]  R9 U5.2.5.2 Test method
  @; \2 |" \5 \) j9 z5 Y& bThe specimen for test shall be of any suitable length. One end shall be cut off square, care being taken/ G% y# |9 F+ T. f( q
that the conductor ends are flush with the cut end of the cord. The cord shall be laid across a
) b$ T7 u, H. n* Q8 m, P: Snonconductive surface, the square cut end protruding approximately 0.1 m (4.0 in) beyond the surface
5 }1 H* F; ?$ _# i6 V4 hedge. The opposite end shall be connected to the voltage source between the conductors of a
) x6 t, N- G2 H9 g& g& x  Ptwo-conductor cord and between the circuit conductors joined together and the grounding conductor of a; s( C0 W$ J* {
three-conductor cord. Using a Tirrill, Bunsen, or similar appropriate gas burner, a standard test flame (as
: f7 O7 y2 L. a' pdescribed in Clause 5.1.5.1) shall be obtained. With its barrel vertical, the burner shall be placed under
! `0 l9 _6 g7 w. k$ [: lthe free end of the cord with the tip of the inner blue cone touching the flat underside of the specimen; K* q6 n+ X/ k7 X
midway between the conductors and 13 mm (0.5 in) from the square end for a 2 min period. The cord1 y6 ?9 A: L- y. a% i+ b
does not comply if arcing occurs between the conductors during application of the flame or if the fuse or circuit breaker opens.8 q$ N8 ~1 D  n' L6 w
=======================, D7 W- X1 [9 d+ `/ y# o
5.2.6 Flex arcing test for Type HPN
3 D& E* I4 |& P5 w" F7 E) L! S===========================
0 c+ _: I8 \. h! O$ e4 H- Q5 d5.2.6.2 Procedure
. r0 O7 U6 |8 m" RThe 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...2 `+ ~% {( q! |. e/ y# G2 H

0 ]9 H- f, L. r: t; R9 ]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  :7 w5 g7 {" C/ R: D, |' r
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!
' w  M- g3 V- \9 q4 b2 s$ Q2 m
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, 2026-4-19 09:33 , Processed in 0.063787 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