Archive for 九月, 2009

NEMA与IP防护等级的对照比较

NEMA/IP Enclosure Types: The National Electrical Manufacturers Association (NEMA) provides descriptions,classifications, and test criteria relating to enclosures for electrical equipment. Tables 12-13, 12-14, and 12-15 compare the specific applications of enclosures for indoor and outdoor nonhazardous locations and indoor hazardous...