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来自:临沂金鑫物资回收荣鼎国际平台 发布日期:2019/3/29
核心提示:在选用电线电缆时,一般要注意电线电缆型号、规格(导体截面)的选择。
在选用电线电缆时,一般要注意电线电缆型号、规格(导体截面)的选择。 When choosing wire and cable, we should pay attention to the choice of wire and cable type and specification (conductor cross section). ⒈电线电缆型号的选择 Selection of wire and cable model 选用电线电缆时,要考虑用途,敷设条件及安全性;例如: When selecting wires and cables, the use, laying conditions and safety should be considered; for example: 根据用途的不同,可选用电力电缆、架空绝缘电缆、控制电缆等; According to the different uses, power cables, overhead insulated cables and control cables can be used. 根据敷设条件的不同,可选用一般塑料绝缘电缆、钢带铠装电缆、钢丝铠装电缆、防腐电缆等; According to the different laying conditions, general plastic insulated cables, steel tape armored cables, steel wire armored cables and anticorrosive cables can be selected. 根据安全性要求,可选用阻燃电缆、无卤阻燃电缆、耐火电缆等。 According to the safety requirements, flame retardant cable, halogen free flame retardant cable and fire resistant cable can be selected. ⒉电线电缆规格的选择 Selection of wire and cable specifications 确定电线电缆的使用规格(导体截面)时,一般应考虑发热,电压损失,经济电流密度,机械强度等选择条件。 When determining the specifications of conductor and cable (conductor cross section), we should generally consider heating, voltage loss, economic current density and mechanical strength. 根据经验,低压动力线因其负荷电流较大,故一般先按发热条件选择截面,然后验算其电压损失和机械强度;低压照明线因其对电压水平要求较高,可先按允许电压损失条件选择截面,再验算发热条件和机械强度;对高压线路,则先按经济电流密度选择截面,然后验算其发热条件和允许电压损失;而高压架空线路,还应验算其机械强度。若用户没有经验,则应征询有关专业单位或人士的意见。 According to the experience, the low voltage power line, because of its high load current, usually selects the cross section according to the heating condition, and then checks the voltage loss and mechanical strength. The low voltage lighting line can select the cross section according to the condition of the voltage loss, and then check the heat condition and the mechanical strength. First, choose the cross section according to the economic current density, then check the heating condition and allowable voltage loss, and the high voltage overhead line also calculates its mechanical strength. If the user has no experience, he should consult the relevant professional units or people. 电线电缆的运输和保管 Transport and storage of wire and cable 1、运输中严禁从高处扔下电缆或装有电缆的电缆盘,特别是在较低温度时(一般为5℃左右及以下),扔、摔电缆将有可能导致绝缘、护套开裂。 1, in transportation, it is strictly forbidden to throw cables or cable plates from high places, especially at lower temperatures (usually about 5 degrees centigrade or so). Throwing and throwing cables may cause insulation and sheath cracking. 2、尽可能避免在露天以裸露方式存放电缆,电缆盘不允许平放。 2, try to avoid storing cables in the open air as far as possible, and the cable disks are not allowed to be placed horizontally. 3、吊装包装件时,严禁几盘同时吊装。在车辆、船舶等运输工具上,电缆盘要用合适方法加以固定,防止互相碰撞或翻倒,以防止机械损伤电缆。 3, when lifting packages, it is strictly prohibited to lift several dishes simultaneously. In vehicles, ships and other means of transport, cable plates should be fixed in suitable ways to prevent collision or overturn, so as to prevent mechanical damage to cables. 4、电缆严禁与酸、碱及矿物油类接触,要与这些有腐蚀性的物质隔离存放.贮存电缆的库房内不得有破坏绝缘及腐蚀金属的有害气体存在。 4, the cable is strictly forbidden to contact with acid, alkali and mineral oil, and should be kept in isolation with these corrosive substances. There shall be no harmful gas that destroys the insulation and corrodes the metal in the storeroom of the storage cable. 5、电缆在保管期间,应定期滚动(夏季3个月一次,其他季节可酌情延期)。滚动时,将向下存放盘边滚翻朝上,以免底面受潮腐烂。存放时要经常注意电缆封头是否完好无损。 5. During the period of storage, the cable should be rolled regularly (once a month in the summer and postponed in other seasons in time). 3. When rolling, store the side of the plate downward and turn it upwards, so as to prevent the bottom from getting damp and rotting. When storing, always pay attention to whether the cable head is intact. 6、电缆贮存期限以产品出厂期为限,一般不宜超过一年半,最长不超过二年。 6, the duration of cable storage is limited to the product's factory life. Generally, it should not exceed one and a half years, and the longest period will not exceed two years.

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