gb 12976.1-1991 额定电压 35kv 及以下铜芯、铝芯纸绝缘电力电缆 第1部分 一般规定

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1、中华人民共和国国家标准额定电压35kV及以下铜芯、铝芯纸绝缘电力电缆GB12976.1一91第7部分:一般规定Copperoraluminiumconductorpaper-insulatedpowercableswithratedvoltagesupto35kVPart1:General1主题内容与适用范围1-1主题内容本标准规定了额定电压35kV及以下铜芯、铝芯纸绝缘电力电缆的材料、技术要求、验收规则、包装及贮运，1.2适用范围1.2.1本标准适用于交流额定电压35kV及以下铜芯或铝芯油浸纸绝缘金属套电力电缆。1.2.2本标准的油浸纸绝缘金属套电力电缆包括不滴流电缆和粘性油浸纸绝

2、缘电缆两个系列产品。1.2.3电缆的额定电压应适合使用电缆系统的运行情况，用Ua/rT(rim)表示，均为有效值，单位为kVoUo-一电缆设计用的导体与屏蔽或金属套之间的额定毛频电压。厂—电缆设计用的导体之间的额定工频电压。Um—设备最高电压(使用设备的系统最高电压的最大值)。三相系统用电缆的额定电压如表1规定。表1kvl.'=UUm第1类电绳第2类电缆11.20.60.633.61.名3‘667.2366101268.71517.58.7122024121835422126注打。按系统接地故障持续时间不同分为两类，具体分类如下:第I类电缆一用于单相接地故障时间每次一般不大于Imin

3、的系统亦可用于最长不超过8h,每年累计不超www.bzfxw.com过土26h的系统第2类电缆一用于接地故障时间更长的系统。对电缆绝缘性能要求较高的场合，也应采用第2类1.2.4本标准必须与GB12976.2,GB12976.3等一起使用。国家技术监督局1991一06一06批准1992一03一01实施GB12976.1一912弓I用标准GB469铅锭GB1196重熔用铝锭技术条件GB2951电线电缆机械物理性能试验方法GB2952电缆外护套GB3048电线电缆电性能试验方法GB3953电工圆铜线GB3955电工圆铝线GB3957电力电缆铜、铝导电线芯GB4005电线电缆交货盘GB69

4、95电线电缆识别标志GB7969电力电缆纸GB8170数值修约规则3术语3.1标称值制造厂必须保证的规定值.且都具有规定公差3.2假定直径为确定电缆护层各组成部分的厚度而规定的值。3.3测量值用规定方法测量或试验所获得的数值。4产品命名和代号4.1代号铜导体·············”···················································⋯⋯(丁)省略铝导体······························“······”·································⋯⋯L纸绝缘··········”···

5、·················”·············，··························⋯⋯2铅套·························”··，······”···”·”··”···，···”····，·”·，·····“·⋯⋯Q铝套···························，··································，··············⋯⋯L分相电缆···········，··········································，·············⋯⋯F不滴流

6、电缆····················⋯⋯，’’········································⋯⋯D粘性电缆····················，···，·························，·············⋯⋯省略外护层代号···················································⋯⋯按GB2952规定4.2产品表示方法4.2.1产品用型号、规格(额定电压、芯数、标称截面)及标准编号表示。4.2.2举例a.铝芯不www.bzfxw.com滴流油浸纸绝缘分相铅套钢带恺装聚氯

7、乙烯套电力电缆，额定电压21/35kV.三芯，标称截面150mm"表示为:ZLQFD22-21/353又150GB12976.2b铝芯粘性油浸纸绝缘铝套聚乙烯套电力电缆，额定电压0.6/1kV，三个主线芯.标称截面150mm,.中性线芯标称截面70mmz，表示为:ZL.i.03-0.6/13X150-}-1X70GB12976.37GB12976.1一915材料5.1导体铜铝见GB3953,GB3955,5.2电力电缆纸见GB7969,5.3护套铅见GB4