Under special circumstances, the motor needs a special derived model, which is actually a structural derived model, mainly based on the basic series of structural design of the motor, so that the motor has a special protection capability (such as explosion-proof, chemical anti-corrosion, outdoor and marine, etc.).
 
Some structural components and protective measures of these series are different from the basic series, and the derived models of the motor use environment are:
 
special circumstances code
 
Damp-heat type, weather protected location TH
 
Dry heat, weather protected TA
 
Tropical, weather protected occasions T
 
Damp heat, no weather protection THW
 
Dry heat, non-weather protected location TAW
 
Tropical version, no weather protection TW
 
Indoor, light anti-corrosion type No code
 
Indoor, moderate corrosion protection F1
 
Indoor, strong anti-corrosion type F2
 
Outdoor, light corrosion-resistant W
 
Outdoor, medium corrosion protection WF1
 
Outdoor, strong anti-corrosion type WF2
 
plateau weather G
 
For motors/explosion-proof motors used under special conditions, the special condition code should be added after the motor model when ordering.
 
Note: 1) Places with weather protection: indoors or places with good shelter (its architectural structure can prevent or reduce the impact of outdoor weather changes, including the conditions under the shed).
 
2) No weather protection places: all open air or only simple protection (almost impossible to prevent the influence of outdoor weather changes).