UL黄卡的Elec（Electrical）、Imp（Impact）、Str（Strength）分别要怎么理解？

scofieldzhuo

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

UL黄卡的Elec（Electrical）、Imp（Impact）、Str（Strength）分别要怎么理解？
有没有统一的规定或说明？

wangjb

电气、冲击、强度

rocknan

RTI Elec — Electrical RTI, associated with critical insulating properties.

RTI Mech Imp — Mechanical Impact RTI, associated with critical impact resistance, toughness, elongation and flexibility properties.
  D, x, {( h' q5 O
7 M; S4 l% Z  |' {  V" |RTI Mech Str — Mechanical Strength (Mechanical without Impact) RTI, associated with critical mechanical strength and structural integrity where impact resistance, resilience and flexibility may not be essential.

scofieldzhuo

rocknan 发表于 2019-11-7 08:59
RTI Elec — Electrical RTI, associated with critical insulating properties.
; C8 R& _1 M- N; k5 |! W
! H0 ^, `$ u4 XRTI Mech Imp — Mecha ...

你好，PCB板上的绝缘片是按电气温度限值来卡就好了？还是说还需满足强度温度限值？

rocknan

IT產品都是看電氣溫度唷, 不管是PCB 還是 塑膠外殼  都是看 電氣溫度
7 X" O& }) `- |  u4 g甚麼時候看 强度温度, 我忘了~~~~~哈哈

$ n+ w: \, c( y9 {+ D太久了@@

包子

多看一下QMFZ2.GuideInfo，这上边有解释每个UL关注的参数所表达的内容。
5 H# V5 R( A( a# C

包子

Part of Guide info.:
Thermal Endurance
( H" C3 k2 n3 j/ RThe materials covered by this program have been investigated with respect to thermal endurance of certain critical properties. The investigation was performed as part of a long-term thermal-aging program or based on historical record in accordance with ANSI/UL 746B, "Polymeric Materials - Long Term Property Evaluations." The temperature below which a class of critical property will not be unacceptably compromised through chemical thermal degradation, over the reasonable life of an electrical product (relative to a reference material having a confirmed, acceptable corresponding performance) is defined as the Relative Thermal Index (RTI). More than one RTI may be appropriate for a given material depending on the property requirements for a given application. In certain cases, higher temperatures are permitted if so specified by the end-use-product standard.

RTI Elec — Electrical RTI, associated with critical insulating properties.
! |8 Q0 d! y1 ]) ERTI Mech Imp — Mechanical Impact RTI, associated with critical impact resistance, toughness, elongation and flexibility properties.
RTI Mech Str — Mechanical Strength (Mechanical without Impact) RTI, associated with critical mechanical strength and structural integrity where impact resistance, resilience and flexibility may not be essential.

scofieldzhuo

rocknan 发表于 2019-11-8 09:56
; K: h/ e; E2 Y' CIT產品都是看電氣溫度唷, 不管是PCB 還是 塑膠外殼  都是看 電氣溫度
  ^5 {- U8 _5 u; ?  o. B1 |甚麼時候看 强度温度, 我忘了~~~~~哈 ...

我了解到的是：外壳要做跌落，撞击等测试，所以要满足这三个档，
" c( Z) F9 o! O' l, s/ Q内部的绝缘片（insulation sheet）要满足强度和电气这两档。

jiayou

同一个料，这三个温度通常不会相差太大吧？！

scofieldzhuo

jiayou 发表于 2019-11-11 14:10
同一个料，这三个温度通常不会相差太大吧？！

$ p: b; q! w# C% Z: \4 {/ x3 e" [刚好是150℃还是95℃的问题，