Megger TTRU3-Basic 3-Phase Transformer Turns Ratiometer

Overview

The Megger TTRU3-Basic is a 3-phase transformer turns ratiometer designed to perform comprehensive measurements on power, distribution, and instrument transformers. Using a revolutionary patented 3-phase step-up ratio testing technique, the TTRU3 eliminates the inaccuracies associated with traditional single-phase test instruments and removes the requirement for knowing the proper test voltage.

Key Features

• 3-phase step-up ratio testing (patented technology)
• Simultaneous testing of all three phases
• 125V maximum test voltage output
• Guaranteed accuracy ±0.10% from -20°C to +50°C
• Magnetic balance test capabilities
• Step-down ratio testing
• Confirmation of expected nameplate vector configuration
• Ability to measure actual vs expected phase shift
• 7-inch colour touch display
• Unique Kelvin clamps with adjustable 3-inch jaw
• Banana plug input for terminal block connections
• Pass/fail indication for turns ratio % error vs nameplate
• Optional printer for permanent results
• Remote PC control capability
• USB memory device export functionality

Applications

• Power transformer testing and condition assessment
• Distribution transformer diagnostics
• Current transformer (CT) testing
• Potential transformer (PT) and voltage transformer (VT) testing
• Phase-shifting transformer evaluation
• Transformer commissioning and maintenance