CEM DT-901 Phase Rotation Indicator

The CEM DT-901 Phase Rotation Indicator (Phase Sequence Tester) is a professional instrument designed to verify phase sequence, phase rotation, and open phase conditions in three-phase electrical systems. It helps technicians quickly identify wiring errors that could cause motors to rotate in the wrong direction or lead to equipment malfunction, making it ideal for electrical installation, maintenance, commissioning, and troubleshooting applications.

Featuring clear LED indicators, audible alerts, and a compact portable design, the DT-901 provides fast and reliable phase testing for industrial facilities, electrical contractors, panel builders, and field service engineers. Its simple operation and durable construction ensure dependable performance in demanding working environments.

Features

• Three-Phase Sequence Detection: Quickly checks phase sequence (ABC or CBA) in three-phase electrical systems.
• Phase Rotation Indication: Displays motor rotation direction (clockwise / counterclockwise) for correct installation.
• Open Phase Detection: Identifies missing or faulty phase connections in the system.
• Clear LED Indicators: Easy-to-read LEDs provide instant visual confirmation of phase order.
• Audible Buzzer Alert: Built-in buzzer gives sound warnings for quick fault identification.
• Double-Insulated Test Probes: Ensures safe measurements when working with high-voltage systems.
• Portable and Compact Design: Lightweight structure allows easy transport in tool bags.
• Durable Construction: Designed for reliable use in industrial environments and field maintenance.

Technical Specifications