POWERSTAT® Variable Transformers

The flagship voltage control product offered by Superior Electric, POWERSTAT® Variable Transformers provides a simple, rugged method of controlling electrical voltage, current, and power. They take in utility line voltage and provide a continuously adjustable output voltage.

Rugged, and designed for heavy-duty use, POWERSTAT® Variable Transformers provide excellent power regulation with negligible variation in output voltage from no-load to full-load current. POWERSTAT® Variable Transformers are available in both manual and motor-driven options. They provide high current ratings, long life, superior overload capacity, and exceptional resistance to contaminants such as fungus and salt spray.

Applications

• Voltage correction for undervoltage or overvoltage supplies on 1-, 2-, or 3-phase circuits
• Producing variable DC voltages from AC sources, usually by control of input voltage to rectifier elements
• Heater or oven temperature control. Voltage adjustment in addition to usual thermostatic control provides more uniform heating
• Dimming or controlling incandescent lamp circuits. Life of lamps goes down significantly when operated above rated voltage. Conversely, lamp life increases significantly when operated below rated voltage
• Varying step-transformer output voltage by control of input voltage
• Operating motors and other electrical equipment at correct voltages even when supply is above or below normal. Starting characteristics at subnormal voltages and heating at higher-than-normal voltages are critical design factors
• Speed control of some AC motors and DC motors operation rectified AC circuits. Fan and other motors with low starting torque are good applications
• Providing voltages not commonly used for tests or operational runs
• Calibrating electrical equipment and controls
• Servo motor regulation