General Electric 643X94 PRI.4200V Potential Transformer is a General Electric Type JVM-3 instrument transformer designed to step down a 4,200-volt primary for metering and protection relay circuits in electrical power systems. Identified by part number 643X94, this JVM-3 family PT provides a safe, isolated secondary suitable for connection to meters, relays, and control gear. The primary voltage rating is 4200 V (PRI.4200V), making it appropriate for use in substations, switchgear, and industrial power systems where accurate voltage representation is required for monitoring and protection.
