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Generator ends are rated by Heat Rise at a given ambient temperature and load.
When current is put through a conducer the amps cause resistance and the result
is heat, the temperature increase due to resistance is the Heat
Rise. Normally, all generators are rated in degrees Celsius and at an
ambient temperature of 40°C (104°F). All MQ Power generator ends are
rated at an 85°C Heat Rise at the prime maximum rating and 105° at the continuous rating. Our
competitors rate their generators at a much higher Heat Rise. For example, Whacker/Magnum is anywhere from 105 to 125.
Balder is rated at 125, and Generac rates theirs up to 150. This is very hot and the generators WILL experience reduced life. This difference may not seem like much but
remember we are using degrees Celsius not Fahrenheit. Multiquips 85°C equates
to 185°F.......a Baldor rated at 125 is 257°F. That's a difference of 72
degrees. Remember that Heat Rise goes above and beyond ambient temperature.
If this unit is run on a 104°F day, then the Heat Rise is added to the total
temperature of the generator windings increasing that temperature.
The Heat Rise of a generator end directly relates to the amount
of copper in it. An alternator with less copper means a higher
temperature. Reduced copper means a less loss. This is an area where
competitors can cut cost and sell less. The fact is Multiquip uses more
copper in the patented generator ends coupled with patented excitation system
results in greater motor starting capabilities, increased longetivity and a
great reputation.
Many times competitors state they have a class H insulation and
MQ uses class F. The class of the insulation used directly relates to the
temperature that the insulation can withstand and does not relate in any way to
the quality or thickness of the insulation. Class F is rated up to a 135
degree "Heat Rise" and class H is rated to a 155 degree Heat
Rise. Competitors use this class H because they have too, their generators
have less copper and operate at much higher temperature than Multiquip.
Understanding "Heat Rise" and "Insulation
Class" really helps in comprehending the Value of the Multiquip generators and
what that value includes. The quality of the Multiquip generators out
weighs the difference in price.
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