Choosing your motor

This article discusses about the design and safety aspects of n, e, and p motors for hazardous area. Induction and synchronous motors have been used in numerous applications in the petrochemical industry for many years. They have operated in hazardous areas designated as Class 1, Division 1/Zone 1, or Class 1, Division 2/Zone 2. The safety standards governing the use of motors in these hazardous areas have been developed by various national and international authorities with the goal of making the use of motors as safe and economical specification of the motor. The paper will discuss the key design and application aspects of the motors above the frame sizes defined by the National Electrical Manufacturers Association (NEMA) following the North American and International Electrotechnical Commission standards.