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我国自试制矿用半导体屏蔽软电缆以来,产量逐年增加,质量不断提高。屏蔽电缆除了按非屏蔽电缆检查机械性能和电气性能以外,尚须检查屏蔽层的电气参数。由于屏蔽层过渡电阻与矿井安全有密切关系,因此这个参数是出厂检查的重要项目。但是过去这项参数在我国没有规定具体指标,又没有专门的设备进行检查,所以生产这种电缆的厂家多数不进行检查。有的只用防爆漏电继电器试一下,无问题就可以了。一般这种
Since the semi-conductive shielded flexible cable for mine production in our country, the output has been increasing year by year, and the quality has been continuously improved. Shielded cable In addition to unscreened cable inspection mechanical and electrical properties, the electrical parameters of the shield have to be checked. As the shield transition resistance and mine safety are closely related, so this parameter is the factory inspection of the important items. However, in the past, this parameter did not specify the specific indicators in our country, and no special equipment for inspection, so most of the manufacturers to produce such cables do not check. Some only use leakage proof relay test, no problem on it. This is normal