電線電纜的絕緣外皮拉伸試驗
一、電線(xian)電纜的(de)絕緣外皮拉伸(shen)試驗方(fang)案
公(gong)司(si)(si)名稱:某公(gong)司(si)(si)
材料名稱(cheng):電(dian)線電(dian)纜(lan)的絕緣外皮
執(zhi)行標準:GB1040
試驗(yan)方法:拉伸
試樣(yang)參數(shu):直徑 4.2/4.5MM 標距/跨距離 50MM 試驗速(su)度 150mm/min,500mm/min
引(yin) 伸(shen) 計:大(da)變形
夾 具(ju)(ju):波浪夾具(ju)(ju)
試(shi)驗設(she)備(bei):
試(shi)驗方案:①固定大變(bian)形標距:
②夾持(chi)試樣,夾持(chi)大變(bian)形(xing):
③設置試驗速(su)度(du),并運行試驗:
④打印試(shi)驗報告:
二、電線電纜的絕(jue)緣外皮拉伸試驗報告內容(rong):
①電線(xian)外徑(jing) ②抗拉力(li) ③彈性模量 ④伸長率
三、電線電纜(lan)的絕(jue)緣外(wai)皮拉伸試驗參考:
標準規(gui)定電纜絕緣的(de)熱(re)延(yan)伸(shen)載荷下伸(shen)長率不(bu)超過175%,永久伸(shen)長率(lv)不超過15%。
電(dian)(dian)(dian)(dian)線電(dian)(dian)(dian)(dian)纜(lan)的絕(jue)緣外(wai)皮的老化(hua)可能(neng)導(dao)體(ti)電(dian)(dian)(dian)(dian)阻不(bu)合格會增大電(dian)(dian)(dian)(dian)流在線路(lu)(lu)上(shang)通過時的損(sun)耗,浪費電(dian)(dian)(dian)(dian)能(neng),加速導(dao)體(ti)外(wai)絕(jue)緣的老化(hua),造(zao)成供(gong)電(dian)(dian)(dian)(dian)線路(lu)(lu)漏電(dian)(dian)(dian)(dian),短路(lu)(lu),后果嚴(yan)重。需要(yao)測試電(dian)(dian)(dian)(dian)線電(dian)(dian)(dian)(dian)纜(lan)的絕(jue)緣外(wai)皮的力學(xue)性能(neng),為(wei)使用提(ti)供(gong)切實指導(dao)。