TR 4Turns Ratio Meter 3-Phase
The Raytech TR4 is the next-generation successor to the TR-Mark III transformer tester.
It provides advanced diagnosing technique including FRSL (Frequency Response of Stray Losses) and SCimp (Short Circuit Impedance), fully integrated into one portable instrument.
The TR4 supports testing of phaseshifting transformers. A one-time test setup is enabled by an internal multiplexer.
All measurements are performed using an internally generated user adjustable test voltage of up to 250 VAC. The instrument can be powered from the mains or from an external power bank.
Integrated tap control enables automated test sequences, making it suited for field and laboratory transformer diagnostics.
Measurement Methods
- Power transformers, Tap changers, PT’s and CT’s measurement
- Turns Ratio, Excitation Current and Phase Displacement Measurements
- Transformer Winding Connection and Vector Group Detection
- Magnetic Balance Measurement
- FRSL (Frequency Response of Stray Losses) (Optional)
- Short Circuit Impedance/ Leakage Reactance (Optional)
Additional Features
- Automatic Multiplexer for Primary and Secondary Side
- Automatic selection of suitable AC test voltage
- Controlling Tap Changer Manually or Automatically With the Tap Control Interface
- Built-in Temperature Channel
User Interface and Data Management
- Color LCD With Backlighting and Capacitive Touch Screen
- User-friendly interface
- Operating the Instrument With a Touch Screen or by Using the Remote Control
- Test object Profile and Template creation, import and export
- Data exchange via USB-Key, serial cable and USB cable
- Report generation in various formats
Durability and Support
- The enhanced smart heavy-duty protection system
- Extremely Rugged
- Software and firmware update
- Raytech technical support
- 2 years standard warranty







