| 本安电路中电缆L/R的选择原则 |
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| 引用本文： | 张军国,冯宇,孟庆海,苗长新.本安电路中电缆L/R的选择原则[J].电气防爆,2002(3):32-34. |
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| 作者姓名： | 张军国 冯宇 孟庆海 苗长新 |
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| 作者单位： | 中国矿业大学信息与电气工程学院,江苏,徐州,221008 |
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| 基金项目： | 国家自然科学基金资助项目 (5 0 0 770 2 2 ) |
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| 摘 要： | 电缆L／R经值按照国际电工委员会IEC60079－11标准取值，能够保证系统的本质安全性质，不过由该标准中L／R公式未考虑火花放电能量中由电源部分提供给的能量EIT／6，从而导致与实际情况不符。为此，本基于电感性本质安全电路放电电流线性衰减模型，引入了最小建弧电压的概念，进而利用电感电路的本质安全性能判别工，提出了确定电缆电感电阻比L／R的又一选取原则。
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| 关 键 词： | 本安电路 本安型电气设备 电缆L／R选择原则 电弧放电 最小建弧电压 爆炸性危险环境 |
| 修稿时间： | 2002年5月28日 |
Determination of Inductance to Resistance L/R Ratio for Cable in Inductive Intrinsically safe Circuit |
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| College of Information and Electrical Engineering,China University of Mining and Technology.Determination of Inductance to Resistance L/R Ratio for Cable in Inductive Intrinsically safe Circuit[J].Electric Explosion Protection,2002(3):32-34. |
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| Authors: | College of Information and Electrical Engineering China University of Mining and Technology |
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| Affiliation: | Xuzhou jiangsu 221008 |
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| Abstract: | It can ensure the intrinsically safe capability of the system according to the ratio of L/R regulated in IEC 60079-11 Nevertheless, it ignores the energy EIT/6 supplied by electrical source in te whole process of arc discharge. This makes it being strict comparing to the fact.Then based on the current linear attenuation model and the concept of minimum arcing voltage in inductive intrinsic safety circuit, the choosing principle of L/R ratio is established assuredly by using the intrinsic safety discriminate of inductive circuit. |
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| Keywords: | intrinsically safe circuit Arc discharge Minimum arcing voltage in inductive intrinsic safety circuit |
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