Megger TTRU3 True Three-Phase Transformer Turns Ratio Tester

Overview

The Megger TTRU3 is a true three-phase transformer turns ratio (TTR) tester that connects to all three phases at once and performs a complete turns-ratio test in less than ten seconds. Rather than testing one phase at a time, it energises the transformer as it operates in service, giving faster, more representative results. It is the smallest and lightest three-phase test set on the market, yet delivers laboratory-grade accuracy from a bright 7-inch touchscreen.

The TTRU3 performs patented three-phase step-up ratio tests as well as step-down TTR tests, with a turns-ratio accuracy of ±0.05% and five-digit resolution over a wide range. It measures turns ratio, phase displacement (0–360°, ±0.05°) and excitation current, and can run automated on-load tap-changer (OLTC) test sequences. Mains powered with USB data export, it is designed for fast, repeatable testing of power and distribution transformers in substations and manufacturing.

Key Features

• True three-phase testing — a full TTR test in under 10 seconds from one connection.
• Patented three-phase step-up and step-down ratio tests.
• High turns-ratio accuracy of ±0.05% with 5-digit resolution.
• Measures turns ratio, phase displacement and excitation current.
• Automated on-load tap-changer (OLTC) test sequences.
• Bright 7-inch (180 mm) touchscreen; smallest and lightest 3-phase set on the market.
• Mains powered with USB data export and optional thermal printer.

Applications

• Fast three-phase turns-ratio testing of power and distribution transformers.
• On-load tap-changer testing with automated sequences.
• Commissioning, maintenance and manufacturing quality control.
• Phase-displacement and excitation-current diagnostics.

What’s in the Box

• TTRU3 true three-phase turns ratio tester.
• Three-phase test lead sets and clips.
• Mains lead and USB drive.
• Transport case and user documentation.

Kit contents and version (Basic/Advanced) vary by order; contact MME to confirm your configuration.

Why buy from MME in UAE

MOHAMMAD MAHDI Electronics Trading LLC (MME) is a trusted supplier of Megger test and measurement equipment across the UAE and the wider Gulf region. We offer genuine Megger products, competitive pricing, expert application support and reliable after-sales service to keep your transformer testing programme running smoothly.

Download the Megger TTRU3 datasheet