The PSI700A Phase Sequence Indicator is precision engineering designed specifically for determining the phase sequence (rotation) of three-phase electrical systems. This compact and rugged instrument delivers reliable performance in demanding industrial and commercial environments, ensuring accurate phase rotation identification every time.

Advanced Phase Detection Capabilities

Clockwise and Counter-Clockwise Rotation Detection

This innovative device provides instant identification of phase rotation direction, clearly indicating whether your system operates with clockwise (ABC) or counter-clockwise (CBA) rotation. The dual-indication system eliminates guesswork and ensures confident system analysis.

Comprehensive Phase Voltage Monitoring

The PSI700A excels beyond basic rotation detection by monitoring all phase voltages simultaneously. Three dedicated indicator lamps confirm the presence of each phase voltage, providing complete visibility into your three-phase system’s operational status.

Open Phase Detection and Identification

When phase continuity issues arise, the PSI700A immediately detects and identifies open phases. The intelligent indication system pinpoints exactly which phase has failed, enabling rapid troubleshooting and minimising system downtime.

Engineering Excellence and Durability

Self-Powered Operation

Engineered for maximum reliability, the PSI700A operates completely self-powered without requiring external power sources or batteries. This autonomous operation ensures consistent performance regardless of site conditions or power availability.

Robust Construction Without Moving Parts

The instrument’s solid-state design eliminates mechanical components that could fail or require maintenance. This engineering approach delivers exceptional durability whilst reducing long-term operational costs and maintenance requirements.

Professional-Grade Build Quality

Housed within a rugged, insulated enclosure designed for hand-held operation, the PSI700A withstands the demanding conditions of industrial environments. The lightweight construction ensures comfortable extended use without compromising structural integrity.

Operational Efficiency Features

Intuitive Visual Indication System

Five strategically positioned indicator lamps provide immediate visual feedback on system status. The clear labelling system identifies ABC rotation, CBA rotation, and individual phase presence, enabling rapid system assessment.

Professional Lead Configuration

Colour-coded leads in red, yellow, and blue configurations provide 40-inch (101.6 cm) reach with insulated clips rated for CATIII 1000V applications. This professional-grade lead system ensures safe, reliable connections across diverse installation scenarios.

Wide Voltage Range Compatibility

Operating effectively across 90 to 600 volts on three-phase systems at both 50 and 60 hertz frequencies, the PSI700A accommodates virtually all industrial and commercial electrical systems encountered in professional practice.