System Grounding, Protection, and Detection for Cement Plants

Safety of personnel and equipment requires proper attention to power system and equipment grounding. The National Electrical Code, MSHA, IEEE, ANSI, and federal, state, and local codes contain regulations or recommendations on system and equipment grounding. Proper grounding practice can be achieved with several different methods and combinations of equipment. The use of ``portable'' equipment in quarries requires specific grounding method and ground check monitoring. Current practice and recommendations on ground fault detection and protection in modern cement plants and associated quarries are discussed.