Megger MTOU3 – Three-Phase Transformer Winding Ohmmeter

• True three-phase winding resistance testing up to 32 A
• Automatic vector validation and polarity recognition
• Adaptive demagnetisation after each test
• One-time lead connection for faster, safer testing
• 1 inch high-bright touchscreen interface
• OLTC continuity testing and one-touch tap changer testing
• Data export to Excel and integration with PowerDB

The Megger MTOU3 Three-Phase Transformer Winding Ohmmeter streamlines transformer resistance testing by combining speed, accuracy and safety in a single instrument. Its true three-phase measurement capability allows engineers to test all phases in one setup, reducing time spent climbing transformers and reconnecting leads. Automatic vector confirmation ensures the correct configuration before testing begins, helping prevent costly mistakes. With powerful output currents, adaptive demagnetisation and dedicated OLTC testing functions, the MTOU3 helps identify issues such as loose connections or tap changer faults quickly and reliably. The intuitive touchscreen interface and flexible reporting options make it easy to capture, review and share results. Contact us to learn how the MTOU3 can simplify and accelerate transformer diagnostics in your maintenance programme.