Contents
What is SF on a motor?
Motor service factor (SF) is the percentage multiplier that a motor can handle for short periods of time when operating within its normal voltage and frequency tolerance. In other words, it is a fudge factor that give extra horsepower when it’s occasionally needed. To the rated armature current of a DC motor, or.
What does SF on a pump mean?
When it comes to buying a new or replacement pump, the two most important numbers that you need to look for on the plate are the service factor (SF) and the horsepower rating (HP) both of which give you an idea of the actual power of the motor. The original motor is called a full-rated motor.
What does HP mean for pool pump?
effective horsepower
A motor’s effective horsepower, or total horsepower, is the actual power output of the motor. You can determine this by using the nameplate to multiply the horsepower and the service factor together. In this case: A motor’s effective horsepower, or total horsepower, is the actual power output of the moto.
Is the most common cause of motor failure?
Low Resistance. The most common cause of motor failure, and arguably the most difficult to overcome, is low resistance. Low resistance is caused by the degradation of the insulation of the windings due to conditions such as overheating, corrosion, or physical damage.
What is safety factor of motor?
Engineers should choose a safety factor of 1.5 to 2.25 according to most documentation and motor selection guides. The drive should be expected to output enough energy for the amount of Torque that the motor should supply.
What is THP pump?
Horsepower (HP) x Service Factor (SF) = Total Horsepower (THP) Total Horsepower is the product of multiplying Horsepower (HP) and Service Factor (SF). Under the new regulations, pumps with greater than 1.0 THP must be a variable speed pump.
How much HP pump do I need?
Horsepower theoretically required for pumping water equals the gallons per minute multiplied by the head in feet, and divided by 4.000 For power recommended, divide by 2000 instead of 4000.
Is the SF the same as the horsepower?
The SF serves as a multiplier to your horsepower which indicates the amount of additional load your motor can handle. By keeping in mind what the service factor does, you realize the horsepower listed on the label is not the actual horsepower of your motor.
What does the SF mean on a motor?
The SF measures the overload capacity built in a motor. You don’t necessarily need to know what the SF means to the operation of the motor, as much as what it actually does. The SF serves as a multiplier to your horsepower which indicates the amount of additional load your motor can handle.
What does permissible horsepower loading ( SF ) mean?
Permissible horsepower loading. Motor Service Factor (SF) is the percentage of overloading the motor can handle for short periods when operating normally within the correct voltage tolerances. This is practical as it gives you some ‘fudge’ in estimating horsepower needs and actual running horsepower requirements.
How to uninstall and reinstall hpsf.exe?
Go to this link and follow the steps under “Error: HPSF.exe has stopped working” to uninstall and reinstall the HP SA. Download and update the driver from the product driver page. Go to Software and Driver Downloads and put in your complete product name to enter the product driver and software page.