| 现场仪表接地解析 |
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| 引用本文： | 叶向东. 现场仪表接地解析[J]. 石油化工自动化, 2022, 0(1): 1-5 |
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| 作者姓名： | 叶向东 |
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| 作者单位： | 1.中国石化工程建设有限公司 |
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| 摘 要： | 从现场仪表的分类、接地的目的 和条件谈起,对照GB/T 3836.15-2017/IEC60079-14,GB/T 16895.21-2020/IEC60364-4-41:2017等标准,介绍了现场仪表接地的确定.分析了爆炸危险环境和非爆炸危险环境中现场仪表接地的不同目的 、基本概念和电气性质.根据GB/IEC几个有关...
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| 关 键 词： | 现场仪表接地 爆炸危险环境 安全特低电压 基本防护 故障防护 |
Resolution on Earthing of Field Instruments |
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| Ye Xiangdong. Resolution on Earthing of Field Instruments[J]. Automation in Petro-chemical Industry, 2022, 0(1): 1-5 |
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| Authors: | Ye Xiangdong |
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| Affiliation: | (Sinopec Engineering Inc.,Beijing,100101,China) |
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| Abstract: | Speaking of the purpose and condition of the classification and earthing for the field instrument, comparing to the standard such as GB/T 3836.15-2017/IEC60079-14, GB/T 16895.21-2020/IEC60364-4-41: 2017, the determination of field instruments earthing is introduced. Different purposes, basic conceptions and electrical properties for field instruments earthing in explosive or non-explosive environment are analyzed. According to several GB/IEC relative standards, different modes of instruments earthing in different field environments are discussed. It is not necessary to ground for field instruments of intrinsic safety, and safety extra-low voltage also has no need to ground for field instrument. Suitable earthing mode for field instrument are proposed. The differences between active national standards and petrochemical standards are also proposed. |
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| Keywords: | field instruments earthing explosive dangerous environment safety extra-low voltage basic protection against malfunction protection |
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