皮卷尺和线尺,虽然看上去像是非金属绝缘量具,但它们当中有的夹有金属丝,该金属丝往往不易被看出;还有其他各种绳索,它们的绝缘性能是否可靠,未按绝缘工具标准试验,无从知晓。因此,为安全起见,在使用上,一律都应当作为非绝缘物品看待。皮卷尺和线尺一般都较长,测量时中间无法稳定,易被风吹移位。如果碰到带电设备,其后果不堪设想。难怪电力行业标准《电业安全工作规程》(DL5009.1—2002)中规定,严格禁止在带电设备周围用钢卷尺、皮卷尺和线尺进行有关的测量工作。 Tape measure and wire ruler, although they may look like non-metallic insulation measuring tools, but some of them are caught in the wire, the wire is often not easy to see; there are other various ropes, their insulation is reliable, not pressed Insulation tools standard test, no one knows. Therefore, for safety reasons, in the use, all should be treated as non-insulated items. Paper tape and wire ruler are generally longer, the middle of the measurement can not be stable, easy to shift by the wind. If you encounter charged equipment, the consequences could be disastrous. No wonder the power industry standard “Electrical Safety Practice” (DL5009.1-2002) provides that strict measurement of the surrounding of live equipment with steel tape measure, tape measure and wire ruler is strictly prohibited.