Using Compressor Engine Service Factor

SERVICE FACTOR

Service factor under certain conditions in the engine output power at the top of the normal output power (or load capacity) can give is a multiplier. Commonly used values of 1.0, 1.15 and 1.25 'dir. Values greater than one service factor should be shown on the label of the engine. In some cases, the service factor current is shown.
Defined above "under certain circumstances" is the point of the problems can start. Service factor of the engine showing the general rate of increase engine power is not an expression. 10 HP-factor in many cases, service 1:15. An engine power of 11.5 HP. Should not be perceived as a fan and pump motors run continuously in the continuous 11.5 HP. 'Should not be expected to also work. Let us examine the causes of this:
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Standard work:

Previous discussions for the right performance and normal life expectancy of nema (National electrical Manufacturers Community) standard motors NEMA MG-1 to determine the working conditions had shown. Motor voltage 10%, 5% below the frequency changes are designed to provide output power. We motor in this limit, the shaft or work under the load current and motor winding temperatures, when we will remain at fair value and the expected length of life of the engine will be able to be.

Service factor studies:

NEMA MG-1 as well as service factor at work has defined the limits. These voltage and frequency should be protected at the beginning of the engine. Normal tolerances for these values were eliminated. Frequency tolerance is a factor of up usually insignificant. Businesses often have a frequency enterconnette'ye dependent and stable. Voltage and frequency is not stable, but the voltage drops in many business puant When combined with in-plant voltage will drop. Under these circumstances the service is installed with a motor factor unacceptable flow rate and temperature increases are exposed to.
Service should be considered among other factors, directly affects engine life. Service factor in the operation of the engine, according to the normal operation of 10 ° C. were permitted to work more with the winding temperature. In the first factor is the aging temperature of the motor insulation. Motor life expectancy increased in the most vulgar rules every 10 ° C. life expectancy is at half of the engine. Continuous service factor load-source failure isolation can cause engine failure. Increased load on the bearing life can be effective.

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