Electric Heaters for Use in Class I, II and III, Division 1, and Catalytic Heaters for Use in Class I, Division 1 and 2, Group D, Hazardous (Classified) Locations
用于I类、II类和III类1类场所的电加热器 以及用于I类、1类和2类D组危险(分类)场所的催化加热器
This standard sets performance requirements for permanently installed electric heaters, electric air heaters, immersion (paint, fluids, etc.) heaters, heating elements and catalytic heaters rated 600 volts or less. This standard does not apply to electric trace heating.