--The Aluminum alloy casting whole structure, good sealing performance. And meet the standard of IP54, Ip55 for the outside shell protection.
--All general-purpose motors perform the following manufacture standard.
--Motor power grade and dimension: GB4826-84; GB4772.2-84;IEC72
--Electric criterion: GB755-87; IEC34-1
--Structure and mounting position: GB997-81; IEC34-7
--Outside shell production grade: GB4942.1-85; IEC34-5
--Cooling mode: GB/T1993-93; IEC34-6