TTR320 (Megger) Features and Specifications *

The Megger TTR320 is a fully automatic, self-checking, menu-driven test set designed for measuring the turn ratio, phase shift, and excitation current of power, distribution, and instrument transformers. It supports both single-phase and three-phase transformers, accommodating those with and without taps, as per IEEE C57.12.90 – 1997 standards. The test set is portable, housed in a durable plastic case with a removable lid and carrying strap, and features a large, easy-to-read LCD. The TTR320 offers multiple test voltages and has storage capacity for over 1000 test files, which can be saved internally, on a USB storage device, or uploaded to a PC via an ethernet port.

Key features of the TTR320 include fully automatic operation, self-checking at power-up, user-friendly menu-driven interface, and the ability to test turn ratio, phase shift, and excitation current in both regular and complex transformer configurations. The unit ensures accurate readings by checking for reverse polarity at the start of each test and offers three excitation test voltages (80 V, 40 V, and 8 V) for versatile testing scenarios. Additionally, the test set supports easy data transfer and reporting via USB and ethernet ports, making it suitable for comprehensive transformer analysis and maintenance tasks.

Safety is a paramount concern when operating the TTR320. The unit and the transformer under test (UUT) should both be considered sources of instantaneously lethal electrical energy. Users must observe all safety warnings, use suitable barriers to prevent unauthorized access, and ensure that the transformer is completely de-energized before testing. The test set is equipped with an emergency off switch and various protective devices to enhance user safety during operation.

The Megger TTR320 price and features make it a very attractive option compared to similar transformer test sets available on the market.

Features

• Fully automatic operation
• Self-checking at power-up
• User-friendly, menu-driven interface
• Measures turn ratio, phase shift, and excitation current
• Supports testing of single-phase and three-phase transformers
• Compatible with IEEE C57.12.90 – 1997 standards
• Large LCD display for easy readability
• Portable design with a durable plastic case and carrying strap
• Three excitation test voltages: 80 V, 40 V, and 8 V
• Internal memory storage and external USB storage support
• Ethernet port for PC connectivity and remote control
• Quick test mode for fast transformer testing
• Multi-lingual support
• Meets European EMC and Low Voltage Directives

Benefits

• Ensures accurate transformer testing and diagnostics
• Simplifies testing procedures with automatic operation and self-checking
• Enhances user safety with built-in safety features and clear warnings
• Offers flexibility in testing with multiple test voltages and storage options
• Improves data management and reporting with internal and external storage capabilities
• Facilitates remote operation and data transfer via Ethernet
• Reduces testing time with quick test mode
• Provides ease of use with a large, clear display and intuitive interface

Capabilities

• Test turn ratio, phase shift (in both degrees and centiradians), and excitation current
• Easily measure regular windings, tertiary windings, and current transformers (CTs)
• Store over 1000 test files (depending on size)
• Check for reverse polarity at the start of each test
• Operate the TTR remotely using a PC or laptop
• Transfer test results to a PC for full transformer test reports
• Test to ANSI, IEC, and Australian standards
• Leads marked to ANSI, IEC, and Australian standards
• Handle diverse transformer types including single-phase, two-winding, three-phase, and three-winding transformers

Specifications

• Input Power:
  • TTR320: 120 V AC ±10%, single phase, 50/60 Hz, 100 VA
  • TTR320-47: 230 V AC ±10%, single phase, 50/60 Hz, 100 VA
• Output Test Voltage and Current:
  • Test voltages: 80 V RMS, 40 V RMS, 8 V RMS
  • Current: up to 500 mA
• Measuring Ranges:
  • Turn ratio:
    • 80 V AC: 0.8 to 45,000
    • 40 V AC: 0.8 to 25,000
    • 8 V AC: 0.8 to 8,000

• • Excitation Current: 0 to 500 mA
  • Phase Angle Deviation: ± 90 degrees
• Accuracy:
  • Turn ratio:
    • 80 V AC: ±0.1% (0.8 to 2000), ±0.15% (2001 to 4000), ±0.25% (4001 to 10000), ±0.3% (10001 to 45000)
    • 40 V AC: ±0.1% (0.8 to 2000), ±0.15% (2001 to 4000), ±0.3% (4001 to 10000), ±0.35% (10001 to 25000)
    • 8 V AC: ±0.1% (0.8 to 2000), ±0.25% (2001 to 4000), ±0.35% (4001 to 8000)
  • Excitation Current (RMS): ±(2% of reading + 1 digit)
  • Phase Angle Deviation: ±3 minutes
• Environmental Conditions:
  • Operating temperature range: 23°F to 122°F (-5°C to 50°C)
  • Storage temperature range: -58°F to 140°F (-50°C to 60°C)
  • Relative humidity: 0 to 90% noncondensing (operating), 0 to 95% noncondensing (storage)

BASIC INFORMATION

CHARACTERISTICS

* Megger TTR320 technical specifications is provided for reference only. Avionteq cannot ensure accuracy of the technical specifications presented herein. The technical data may not relate entirely to all model and versions of the TTR320 such as the models sold by Avionteq.

Buy, sell, trade-in or rent Megger TTR320 Transformer Test Set.

Avionteq offers both new and refurbished or used Megger TTR320 Transformer Turns Ratio Test Set for sale or rent at most competitive price. All refurbished equipment are thoroughly tested and come with our warranty and fresh calibration certificate (when required). You can also sell your excess / surplus Megger TTR320 or receive trade-in credit towards purchase of other test equipment.