VANGUARD TRM403-3-Phase-WR-Test-Set

Vanguard TRM-403 Three-Phase Winding Resistance Test Set

The Vanguard TRM-403 is a rugged, field-ready three-phase winding resistance tester designed to measure the resistance of all transformer windings—simultaneously and accurately. With a built-in demagnetization circuit and automated test sequences, it minimizes transformer downtime while ensuring consistent, high-precision results.