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所谓通讯电缆的漏阻,即一对通讯线之间的泄漏电阻,简称漏阻。邮电系统规定,通讯线路的允许漏阻不得小于20kΩ。因为煤炭系统矿井相对温度高达95±3％,比较潮湿,矿井通讯电缆的允许漏阻取多大合适呢?一般认为矿井通讯电缆的允许漏阻应该取得低一些。那么低多少呢?是否应该低呢?我们通过对SD202型矿用调度交换机的研制,做了一点试验研究工作,提出自己一点意见与大家商讨。
The so-called communication cable leakage resistance, that is, between a pair of communication line leakage resistance, referred to as leakage resistance. Posts and telecommunications system provides communication lines allow leakage resistance of not less than 20kΩ. Because coal mine system relative temperature as high as 95 ± 3%, more humid, mine communication cable allowable leakage resistance how much it is generally considered mine communication cable allowable leakage resistance should be made lower. So low how much? Should it be low? We SD202 mine scheduling by the development of switches, do a little bit of experimental research, put forward their own opinions and discuss with you.