Megger (AVO Biddle)

Megger TTRU3

True 3 Phase Transformer Turns Ratiometer
Up to 3 x 2.5 kVA Test Voltage Output
15 Hz – 400 Hz Frequency Range
3-phase output Number of Phases
Up to 3 x 33 A Maximum Output Current
Up to 3 x 250 V Maximum Output Voltage
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Attribute Value
Test Voltage Output Up to 3 x 2.5 kVA
Frequency Range 15 Hz – 400 Hz
Number of Phases 3-phase output
Maximum Output Current Up to 3 x 33 A
Maximum Output Voltage Up to 3 x 250 V
Power Supply Input Single-phase 110/230 V, 50/60 Hz
Measurement Accuracy ±0.2% of reading
Interface / Connectivity USB, RS232, Ethernet
Operating Temperature Range -10°C to +50°C (14°F to 122°F)
Weight Approximately 52 kg (114.6 lbs)
Megger TTRU3 Options:
  • TTRU3 - EXP - 250V 3Ø + Accessories (includes all software options)
  • TTRU3 - PRO - 250V 3Ø
  • TTRU3 - ADV - 125V 3Ø
  • TTRU3 - X - Buying leads a la carte / customer has leads (customer must verify PN)
  • TTRU3 - 1 - Lead Kit 5m
  • TTRU3 - 2 - Lead Kit 9m
  • TTRU3 - 3 - Lead Kit 18m
  • TTRU3 - 4 - Lead Kit 30m/18m
  • TTRU3 - X - No Printer
  • TTRU3 - P - Printer
  • TTRU3 - X - No Automation Software
  • TTRU3 - 2 - Automation Software: PowerDB
  • TTRU3 - X - No Versatile Software
  • TTRU3 - 1 - Versatile Software: Versatile Kit
  • TTRU3 - 2 - Versatile Software: Phase Shifting
  • TTRU3 - 3 - Versatile Software: Magnetic Balance
  • TTRU3 - SW-POWERDB - PowerDB Control Software
  • TTRU3 - SW-VERSATILEKIT - All Versatile Software
  • TTRU3 - SW-PHASESHIFT - Phase Shifting Software
  • TTRU3 - SW-MAGNETICBAL - Magnetic Balance Software
Calibration Form Megger TTRU3

Repair Form Megger TTRU3
Maximum file size: 40MB

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ModelTTRU3

The Megger TTRU3 3 Phase Transformer Turns Ratiometer delivers advanced ratio testing with ±0.05% accuracy across -20°C to +50°C. Featuring 3Ø excitation up to 250V, step-up ratio capability, and a 7-inch color touch display, it simplifies transformer diagnostics. Compact and lightweight, it supports power, instrument, and distribution transformers with rapid results in under 10 seconds.

With intuitive controls, USB data export, remote PC operation, and optional printer, the TTRU3 ensures reliable and efficient testing. It overcomes issues with delta secondary and tertiary loading, while phase displacement measurements are easily compared across all three phases.

Testwall can supply the used Megger TTRU3, fully tested. With expert support and global delivery, Testwall ensures high-performance instrumentation with unmatched reliability and service quality. Please contact us directly if you need calibration or repair of the Megger TTRU3.

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