Voltage Fluctuations and HVAC Failure: What You Need to Know

Industrial HVAC and chillers are often the largest energy consumers in a building. They are also the most frequently repaired. Many facility managers blame the AC brand, but the culprit is often the power supply. A voltage sag—a temporary drop in voltage—is devastating for an AC compressor. When voltage drops, the motor must draw more current to perform the same amount of work (P=VI). This excess current generates heat, which melts the internal winding insulation.

The Role of VoltApex in HVAC Protection

A VoltApex Servo Stabilizer ensures that even if the grid drops to 170V, your AC receives a steady 230V. This prevents the compressor from 'stalling' or drawing excessive current. Furthermore, our stabilizers feature a 'Time Delay' restart. This is vital because if power flickers off and immediately back on, the refrigerant pressure in the AC is still high. Attempting to start the compressor against this pressure will burn it out. Our 3-minute delay allows the pressure to equalize, ensuring a safe start every time.