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?电线电缆绝缘和护套材料试验方法GB/T 2951.1

作者：來源：发布日期： 2020.10.15

信息摘要：

?电线电缆绝缘和护套材料试验方法GB/T 2951.1

公司名稱：某公司
材料名稱：電線電纜絕緣護套材料
执行标准：GB/T 2951.1-1997
試驗速度：10mm/min
試驗方法：拉伸
夹具：浙江绍兴（CMT-4103D机夹具）
试验设备：CMT4000系列電子萬能試驗機(100N~30kN)
試驗方案：①按樣品及標准完成制樣：
②准備試驗設備及夾具：
③按相當標准進行試驗：
④出具試驗報告：

電線電纜絕緣護套材料報告內容：
①材料名称 ②试样尺寸 ③最大力 ④抗拉强度 ⑤ 屈服强度 ⑥延伸率 ⑦力-变形曲图

電線電纜護套是電纜的最外層，如VV是聚氯乙烯絕緣，聚氯乙烯護套。外面穿的管叫保護管。對于保證光纜的物理機械性能，適應敷設條件、環境老化，保證運行可靠性和長期使用壽命，具有其獨特的優越性。

關于標准：
尺寸;電纜護套;厚度;厚度測量;材料的機械性能;電絕緣材料;尺寸測量;電纜。
GB/T 2951标准规定了配电用电缆和通信电缆，包括船用电缆的聚合物绝缘和护套材料的试验方法。
GB/T 2951.1规定了厚度和外形尺寸的测量方法及机械性能试验方法。这些方法适用于最普通类型的绝缘和护套材料（弹性体、聚氯乙烯、聚乙烯、聚丙烯等等）。
本標准規定的試驗條件和試驗參數適用于電纜、電線和軟線的最常用類型的絕緣和護套材料。

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The Curate, of course, had heard nothing about the Clockwork man's other performances; he had scarcely heeded the hints thrown out about the possibility of movement in other dimensions. It seemed to him, in the uncertain light of their surroundings, that the Clockwork man's right arm gradually disappeared into space. There was no arm there at all. Afterwards, he remembered a brief moment when the arm had begun to grow vague and transparent; it was moving very rapidly, in some direction, neither up nor down, nor this way or that, but along some shadowy plane. Then it went into nothing, evaporated from view. And just as suddenly, it swung back into the plane of the curate's vision, and the hand at the end of it grasped a silk hat. Good fitting is often not so much a question of skill as of the standard which a workman has fixed in his mind, and to which all that he does will more or less conform. 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