All frames are two-way end ventilated.  Air enters through openings in both end brackets and dis- charges through frame openings at the bottom. 

SERVICE FACTOR       

Standard 1.15 service factor at 40°C (104°F) ambient for 60 hertz, NEMA Design B.  Designs A, C and D are also available on request.      

CONSTRUCTION      

Frame and end brackets are rugged cast iron.  (Frames 143T and 145T are steel.) 

BEARINGS   

Pre-packed with grease for ambient temperatures of -30°C to +50°C (-22°F to +122°F).  Other temperature ranges available on special order with single-shielded, temperature stabilized bearings.

Class F nonhygroscopic system is standard and meets or exceeds NEMA and IEEE standards.  Stator coil conductors receive multiple coatings of premium grade insulating enamel.  Slot cell is made from a laminated material that provides high dielectric strength, great mechanical strength, and affords a positive moisture barrier.  Glass, one of the materials used, affords positive protection against "thermal cut through" between the wire and lamination stack.     

DRAIN PLUGS      

Pipe tap plugs are furnished at the low point of each end bracket.  Frames 143T through 215T have a 1/8" plug, while frames 254T through 449T have a 1/4" plug. 

GREASE FITTINGS 

Pipe plugs on inlet and relief.

HICO ODP motors are designed for improved heat dissipating capacity adopting a two-way end ventila- tion system.  The gain in heat dissipating capacity is about 60% for smaller frames, and about 30% for larger frames.  This generous, even flow of cooling air throughout the machine provides ample cooling and assures against localized heating or hot spots. 

Standard applications for indoor and outdoor use include clean and dry locations such as separate motor rooms, well kept factories where metallic and non-metallic dusts are NOT present, and office buildings, etc. 

For moist, hot tropical climates where fungi could form, special protection can be provided as an option and at extra cost.  Unless otherwise specified, tropical protection includes moisture resistant insulation plus fungus protection on all electrical parts, windings, rotor outside diameter, and stator inside diameter. 

For gravel plants, pulverizers of non combustible and non clogging materials, additional abrasion and dust resistant protection can be supplied.