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6千伏线路和设备停电检修时,作业前必须验电,但遇到一个晴天,尤其是在野外,试电笔的氖泡所发出的微弱红光,已被阳光掩盖,再加上手举试电笔人的眼睛距氖泡将近两米,氖泡被激发的红光,无法分辨,在该情况下,高压试电笔失去验电效能。为了安全作业,故对原6千伏试电笔进行了革新,改制了两只,效果良好,晴天气候干燥时,验电电压为1.2千伏时灯泡就能发出足以辨别的亮光,阴天时被验电电压还可以低。
6 kV lines and equipment blackout maintenance, the electrical test must be done before the job, but encountered a sunny day, especially in the field, test light pen neon light emitted by the weak red, has been covered with sunshine, coupled with hand-held test pencil Nearly two meters from the neon bulb of the human eye, the neon bulb is excited by the red light, can not distinguish, in this case, high-voltage test pencil loss of electroscope performance. In order to safe operation, so the original 6 Kv test pencil innovation, restructuring of the two, the effect is good, sunny weather is dry, the inspection voltage is 1.2 kV bulb will be able to issue enough light to distinguish, cloudy days were tested The voltage can also be low.