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  • 绑线松动、导线磨损易造成断线事故
  • 本站编辑:临安联丰线带厂发布日期:2018-01-04 10:21 浏览次数:
事故经过
Accident
 
某村通往水泵房的低压线路是16mm2铝线,突然发生一相断线,如图1-1所示,使正在排灌的水泵停止运行。
The low voltage line to the water pump room of a village is 16mm2 aluminum wire, and a broken line suddenly occurs. As shown in Figure 1-1, the water pump is being stopped running.
事故原因
Cause of the accident
 
事故后,经电工检查,发现通往泵房的4号杆(直线)瓷横担上的导线绑扎不牢。由于绑线松动,使导线和瓷担发生摩擦,久而久之,导致破股断线。
After the accident, it was found that the wire on the 4 pole (straight line) to the pump room was not tightly bound. Due to the loosening of the wire, the wire and the porcelain load are rubbed, and the broken wire is broken for a long time.
 
低压导线固定在绝缘子上,要求用绑线进行绑扎,绑扎方法要按规定执行。固定处的绝缘强度和机械强度不受影响,固定程度必须符合要求,长期运行后不松脱。这次断线的主要原因是绑线未按标准规定绑扎。横担绑线处松动,导线与瓷担间发生摩擦,导线磨断四股后而发生断线。
The low voltage wire is fixed on the insulator, and the binding line is required. The binding method should be carried out according to the regulations. The insulation strength and mechanical strength at the fixed position are not affected, and the fixed degree must meet the requirements, and it will not be loosened after long term operation. The main reason for the breakage is that the tie line is not bound according to the standard. The loosening of the tie line at the transverse load, the friction between the wire and the porcelain load, and the broken line after the four strands of the wire are broken.
事故对策
Accident Countermeasures
 
(1)严格施工要求。在线路架设时,必须对导线按标准规定进行绑扎。要求在导线弧垂调整好后,要用直线杆针式绝缘子的固定绑扎法,把导线牢固地绑在绝缘子上(瓷横担两端的槽内)。绑扎时,应先在导线绑扎处缠150mm的长包铝带,以防因摩擦或在绑扎时损坏导线。
(1) strict construction requirements. When the line is erected, the wire must be bandaged according to the standard. After adjusting the wire sag, we must use the fixed binding method of the straight bar pin insulator, and tie the wire firmly to the insulator (the two ends of the porcelain cross arm). Binding, should be around 150mm in the long aluminum conducting wire binding belt, to prevent damage due to friction or in lashing wire.
 
(2)认真做好验收工作,新架设线路在运行前必须进行蹬杆检查。
(2) conscientiously do a good job of acceptance, the new erection line must carry out the pedal check before running.
 
(3)农村电工应加强对低压线路的巡视检查,尤其是在风雨天要进行特殊巡视,发现缺陷,要及时消除。
(3) rural electricians should strengthen the inspection of the low-voltage lines, especially in the wind and rain days to carry out a special inspection, found defects, to eliminate in time.

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