What is the required voltage variation percentage for pump motors under full load conditions?

The required voltage variation percentage for pump motors under full load conditions is typically set at 10 percent. This standard helps ensure that the motor operates efficiently and effectively while minimizing the risk of overheating and equipment damage. Maintaining a voltage variation of within this range allows the motor to perform at its designed horsepower and torque characteristics without being adversely affected by slight fluctuations in supply voltage. Adherence to this standard is crucial for the operational reliability of commercial pool systems, as well as for overall safety and longevity of the equipment.

This 10 percent threshold is widely accepted in the industry, reflecting a balance between operational flexibility and equipment lifespan. If the voltage were to deviate beyond this percentage—be it lower or higher—it could lead to reduced efficiency, increased wear and tear, and possible failure of the motor or associated components altogether. Thus, ensuring that pumps remain within this acceptable voltage range is a fundamental aspect of maintenance and operational protocols for commercial pool management.