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联系人:赵礼春  先生 (商务部  经理)
手 机:18951262418
电 话:86-0517-86844418
传 真:86--
地 址:中国-江苏-淮安-江苏省金湖县金南幸福路
邮 编:211611
网 址:http://ccdlyxgs.machine365.com/General/
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YCB扁电缆

  • 当 前 价:10.00元/米
  • 最小起订:100米
  • 供货总量:10000米
  • 发 货 期:10天内发货
  • 有效期至:2020年6月4日
  • 所 在 地: 江苏 淮安
  • 843499471

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联系我们

联系人:赵礼春  先生 (商务部  经理)
电 话:86-0517-86844418
手 机:18951262418
传 真:86--
地 址:中国-江苏-淮安-江苏省金湖县金南幸福路
邮 编:211611
网 址: http://ccdlyxgs.machine365.com/General/

  江苏春晨电缆有限公司生产YCB扁电缆,又一次变压器故障时某站天气晴朗,气温炎热户外达42度,站内无任何操作。该变压器于2004年7月8日投产。事隔18天后跳闸,首先怀疑是设备的质量问题。但是对主变取油样色谱进行分析正常,经检查站内一次设备无明显故障点。立即对保护屏的公共绕组零序出口压板进行了解除,对#2变压器进行了强送,一次侧480MW,二次检查发现变压器B保护屏一直处在公共绕组过流保护动作状态,用钳型电流表对变压器公共绕组进行了检查,发现零序电流达到0.532A(定值0.34A 6.5S)。我们在#2变压器汇控柜进行二次电流测量,最后排除了零序电流是由保护屏的内部回路引起的。供应YCB扁电缆
   Another transformer fault occurs at a station with clear weather, hot air and outdoor temperature of 42 degrees, without any operation in the station. The transformer was put into operation in July 8, 2004. After 18 days of tripping, the first question is the quality of the equipment. But the chromatographic analysis of the main transformer oil sample is normal. After checking, there is no obvious fault point in the equipment at the station. The common winding zero sequence outlet pressure plate of the protective screen was lifted, and the #2 transformer was strongly sent, one side 480MW and two check found that the transformer B protection screen had been in the state of overcurrent protection in the common winding, and the common winding of the transformer was checked with the clamp ammeter, and the zero sequence current reached to 0.532A. The fixed value 0.34A 6.5S). We conduct two current measurements in the #2 transformer control cabinet, and finally eliminate the zero sequence current caused by the internal circuit of the protective screen.
  通过在对由汇控柜到本体CT的六角图的测量中结果证明了是由于电缆的绝缘损坏,从而与电缆的保护接地点形成闭合的短路环流, 以分相差动的A4271为基准测量公共绕组4281的相角:A4281电流0.371A,角度0°;B4281电流0.372A,角度120°;C4281电流0.368A,角度312°,由于C相电流的回路接地引起角度相位明显的向A相滞后312度,与标准差72度,并且产生零序电流,N4281的不正常电流达到0.495A,超过定值,引起B保护柜的零序过流动作,C相电流的严重偏移是造成这次跳闸的主要原因供应YCB扁电缆
  By measuring six angles from the control cabinet to the noumenon CT, it is proved that the insulation damage of the cable is due to the insulation damage of the cable, thus forming a closed short circuit circulation with the protective connection of the cable, and measuring the phase angle of the public winding 4281 on the basis of phase differential differential: A4281 current 0.371A, angle 0 degree; B4281 current 0.372A, angle 120 degree; C4281 electricity. The flow 0.368A, angle 312 degrees, because the circuit grounding of the C phase causes the angle phase lag to the A phase obviously lagging 312 degrees, and the standard deviation 72 degrees, and producing the zero sequence current, the abnormal current of the N4281 reaches 0.495A and exceeds the fixed value, causes the zero sequence overcurrent movement of the B protection cabinet, and the serious offset of the C phase current is the main original of the trip. because
  

  • 品牌
    其他
  • 型号
    YCB
  • 外形尺寸
    50
  • 适用范围
    卷筒扁电缆
  • 产品认证
    其他