METREL MI 3281 Transformer and Winding Resistance Tester

✅ Built for Power Professionals

Need fast, reliable transformer diagnostics without hauling a lab around? The MI 3281 WR Analyser from Metrel delivers advanced winding resistance analysis in a rugged, portable unit—ideal for utilities, service companies, and industrial maintenance crews.

🔍 What It Does – and Why It’s Better

The MI 3281 measures winding resistance in distribution and power transformers with precision and speed. Unlike simpler testers, it supports true 4-wire Kelvin measurement, automatic demagnetization, and even temperature compensation. Combined with Metrel’s intuitive interface and PC software, it takes the guesswork out of condition assessment.

• Test current up to 10 A for fast saturation

• Automatic tap changer control with demagnetization

• High resolution, stable results

• USB and Bluetooth® for data export

• Works seamlessly with Metrel ES Manager for reporting

⚙️ Key Specifications

• Test Current: 0.5 A to 10 A (selectable)

• Measurement Range: 0.1 μΩ to 2 kΩ

• Accuracy: ±(0.1% of reading + 0.1% of full scale)

• Demagnetization: Yes

• Temperature Compensation: PT100/1000 input

• Interfaces: USB, Bluetooth

• Power Supply: 230 V / 115 V AC, 50/60 Hz

• Weight: 8.5 kg

• Standards: IEC/EN 61557-1, IEC/EN 61010-1