Technology / Motors / Temperature Rise: Some of the electrical energy losses inherent in motors are converted to heat causing some of the motor parts to heat up when the motor is running. The heated parts are at a higher temperature than the air surrounding them thereby causing a rise above room (ambient) temperature. It is important to match the proper motor and insulation system (NEMA temp. codes) to the appropriate ambient temperature. If a motor has been built with greater than 1.0 service factor then it can run at a temperature some what higher than the motor's rated operating temperature. In all cases, the actual insulation thermal capability usually is higher than the motor's operating temperature to allow for any excessive heat areas. This is called hot spot allowance. (See Insulation Systems for NEMA standard temperature codes.) Each temperature code has an associated temperature rise which when added to the ambient and hot spot should not exceed the temperature handing of the insulation system.
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Rise Verb Synonyms: ascend, be elevated, arise, climb, lift, go up, mount
Rise Noun Synonyms: get up, arise, stand (up), get to one's feet, be upstanding
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Business / Construction / Riser: Each of the vertical boards closing the spaces between the treads of stairways. MORE
Business / Construction / Riser And Panel: The exterior vertical pipe (riser) and metal electric box (panel) the electrician provides and installs at the 'Rough Electric' stage. MORE
Science / Weather / Sea Surface Temperature (SST): The temperature of the water's surface. It is measured using buoy and ship data, infrared satellite imagery, and coastal observations. MORE