The primary function of potential transformers (PTs) is to step down high voltages to safe levels for measuring and protection instruments. They allow devices like voltmeters, wattmeters, and energy meters to accurately and safely measure voltage in high-voltage systems. PTs also supply power to devices like voltage relays, which monitor system voltage and act to protect the system in the event of anomalies, such as overvoltage or undervoltage. Explore offerings from national manufacturers, with their main features.