What is the maximum operating voltage for dry-type transformers installed in Class II, Division 2 locations?

The maximum operating voltage of 600 volts for dry-type transformers installed in Class II, Division 2 locations is based on safety standards and regulations governing hazardous locations. Class II locations are classified because they contain combustible dust, and the equipment used in these areas must be designed to minimize the risk of ignition.

The limit of 600 volts is established to ensure safe operation under potentially hazardous conditions. At higher voltages, the risk of arcing, sparking, or equipment failure increases, which could lead to ignition of combustible dust present in the environment. By restricting the operating voltage to 600 volts, manufacturers and users can implement design features and protective measures that maintain safety and compliance with applicable codes. This voltage limit is a critical factor in risk management for electrical installations in hazardous areas.