System neutral grounding for chemical plant power systems

THE chemical industry, because of its continuous processes, has always demanded reliable performance from its electrical power system. Observation of electrical practices will show that care has been exercised in the selection and application of electrical equipment. The scope of this paper is to review the influence which system neutral grounding has on the performance of electrical apparatus, something of the history of grounded and ungrounded systems and why they have been selected, and a discussion of the methods of system neutral grounding with suggestions on how the over-all performance of the power system and the connected equipment can be improved by the operation of some form of system neutral grounding.