1绝缘和外被的物理性能测试—断裂伸长率和抗拉强度

绝缘和外被的物理性能测试断裂伸长率和抗拉强度文件编号版本发行日期修订记录修订版本修订说明签名日期1. 目的： 检验电源线绝缘和外被的物理性能。2. 实验仪器： 老化炉、拉伸机3. 测试条件：温度：25°C 5°C湿度：45%-55%4. 测试步骤和要求：4.1 试样应从成品线上裁取，不能有任何刮伤等缺陷。试样不能是作 过任何实验的试样。4.2 断裂伸长率和抗拉强度同时进行测试。试样拉伸前应作好基准标 记，两基准标准距离为25 mm,且标记与相邻夹具之间距不能大于 13 mm。4.3外被用500±25mm/MIN的拉伸速度，芯线用50±5mm/MIN的拉伸 速度。4.4 在拉伸过程中，应随时观察测两基准点的距离，在断裂时以至少2mm 的精度记录。同时以读数的 2%以下的精度刻度盘所指示最大拉力。4.5 按照规定的老化条件(老化温度和时间 UL 62 的表9和12)，进行老化，试验箱的排气孔应调整到能进行每小时200250次完全新鲜空气换气。取出试样后，在做实验前应在室温下静置至少16h,至多96h。然后按照4.1-4.4做老化后的断裂伸长率和抗拉强度。5. 判定标准：(参考 UL62,section 5.1.1, UL1581 470)断裂伸长率和抗拉强度满足UL 62的表9和12P1Table 9Physical properties - insulation(See Clauses 5.1 1, 5.2.8.2, and E.2.E2 and Tables 30 and 37.)Class no.Terri|)erature rating, maximum, °CMaterial typeBefore agingMinimum elongation%Tensile strength, MPa (Ibf/in2)DryWetOil1606060Thermoset2003 4 (500 i2756060Thermoset2003.4 (500i3906060Thermoset2003 4 (500 i4606060Thermoplastic100IO.3(15OO：i5756060Thermoplastic100|0.3 (1500i6SO6060Thermoplastic10010.3 (1500)71056060Thermoplastic100|0.3 (1500i060Thermoplastic3509.&5 (1400i975Thermoplastic3509.65 (1400i10906060Thermoset150|0.3 (1500iII1056060Thermoset15010.3 (1500)12906060Thermoset2003.3 (1200)13606060Thermoset2008.3 (1200)14606060Thermoplastic2005.5 (SOOi15906060Thermoplastic2005.5 (800i161056060Thermoplastic2005.5 (800i1790Thermoplastic100|0.3 (1500i181056060Thermoset2008.3 (1200)191056060Thermoset2003.4 (500i20105Thermoplastic20017 4 (2500 i(Contiiiued)Table 9 (Concluded)Class no.After agingAir oven testOil immersion test*Oven temp.,°C ±2Time. <1Minimum percentage of unaged valueASTM No. 2 or IRM 902 OilMinimum percentage of unaged valueElongation. %Tensile strength, %Oil temp. °C ±2Time, hElongation, %Tensile strength. %17076560M.'A2100105050M.'A3110105050M.'A4100765B5M.'A5100105570M.'A6121765S5M.'A7136765S5M.'A870275N；AM.'A9100275N.'AM.'A1012174570M.'AII13674570M.'A12110105050121wt60t60t137075575121iat60t60tTable 9 ContinuedCl£3ss no.After agingAir oven testOil immersion test*Oven temp., °C ±2Time, dMinimum percent£3<je of uiiaged valueASTM No. 2 orlRM 902OilMinimum percentage of unaged valueElongation. %Tensile strength, %Oil temp. °C ±2Time, hElongation, %Tensile strength. %1415161718192010012113612113613623275757565505075757575S5505075I4.'AI4.'AI4.'A121I4.'AWf60t60t* The <ncorpor3t!on of an oil-resistttl insulation in 3 finished jjcketed cord shaH be pemiitted: prodded th3t the iitsuSaiion is SLibjecied to the specified ori test in Table !2 for the jjcket being used. Cords hav/ng both insulations sttdisckei materisls meeting the oil resistjttce test shall be marked in accordance with Ciause 6.2.6.2.t Required for HPN only.Note: Interchanging insuiation msteriais within the Table snail be permitted (see Ciause 4. t2.1).Table 12Physical properties - Jackets(See Clauses 5.1 2r 6.2.6.1, and 6.2.6.2, and Tables 9： 30, and 37.)Class no.Temperature rating, maximum, °CMaterial typeBefore agingMinimumElongation%Tensile strength,MPa Ibf/in2DryOil1.1GO-Thermoset20083(1200)1.2GO60Thermoset200t83(1200)1.37560Thermoset2005.3(1200)1.4勺060Thermoset20083(1200)1.5GO60Thermoplastic10010.3 (1500)1.67560Thermoplastic10010.3 (1500)1.7勺060Thermoplastic10010.3 (15001.S10560Thermoplastic10010.3 (15001.96060Thermoplastic200S.3i1200)1.10勺060Thermoplastic20083(1200)1.1110560Thermoplastic20083(1200)1.1210560Thermoset20083(1200)(Continued)Table 12(Concluded)Class no.After agingAir oven testOil immersion test*Oven temp.,。匚±2Time,Minimum percentage of unaged valueASTM No. 2 or IRM 902OilMinimum percentage of unaged valueElongatio n, %Tensile strength, %Oil temp.,°C ±2Time,Elongation. %Tensile strength.%1.1707707ENA1.27077075121IS60601.310010505012160601.4110105050121IS60601.5100745S5GO1G375751.6100104570E016375751.71217453EGO16375751.S136145S56016875751.91001757E6016375751.101217757E5016375751.111367757EGO1637575Table 12 ContinuedClass no.After agingAir oven testOil immersion tesf*Oven temp.,°匚±2Time,Mininuini percentage of unag&d valueASTM No. 2 or IRM 902OilMinimum percentage of unaged valueElongation,%Tensile strength.%Oil temp.,Time,Elongation. 鳴Tensile strength, %1.121367657<121136060i The elongation requirements for Class i.2 jackets on coiled Types SV0 SJO. and SO cords shall be 50%.* Ofi tests are rsqwFed on>v on Type EG1, ETT. and ETP or on products wth an !，Qf and 'OGr in the tvoe designation (see Clause 6.2.6).Mote: Interchanging jacket materiafs iv/rA/n the Tsble sbaH be pernt<tied (see dause 4. L6.2).