摘要
TT系统是供电系统中用于间接接触防护的重要接地保护制式。本文分析了起重机TT系统保护原理,比较了TSG Q7015—2016《起重机械定期检验规则》与国家其他相关标准之间关于TT系统中漏电保护器和接地电阻的规定差异,同时提出了相应建议,以提高起重机械接地系统的安全可靠性和接地工程的经济合理性。
TT system is an important grounding protection system for indirect contact protection in power supply system.This paper analyzes the protection principle of TT system of crane,compares the difference between TSG Q7015-2016Regulation for Periodicity Inspection of Lifting Appliances and other relevant national standards on leakage protector and grounding resistance in TT system,and puts forward corresponding suggestions to improve the safety and reliability of grounding system of hoisting machinery and the economic rationality of grounding engineering.
出处
《起重运输机械》
2018年第12期121-123,共3页
Hoisting and Conveying Machinery
