PSI700A
Instantly determine the phase sequence to prevent damage to motors and ensure all equipment operates in the correct direction.
Quickly identify and pinpoint open or missing phases to minimise downtime and streamline troubleshooting.
Operate with confidence knowing the device requires no batteries or external power, providing dependable performance whenever you need it.
Test a wide range of three-phase systems with a voltage range of 90 to 600 volts, providing flexibility for diverse job site requirements.
Lightweight, compact, and supplied with a durable canvas case, this indicator is designed for maximum convenience and protection in the field.
About the product
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.
FAQ / Frequently Asked Questions
The PSI700A instantly provides phase rotation information (ABC or CBA) and identifies open or missing phases by visually illuminating indicator lamps.
Yes, the PSI700A is suitable for systems operating between 90 and 600 volts, ensuring versatility for various applications.
No, the PSI700A is self-contained with no batteries or external power needed. It comes with alligator clips and leads included.
Absolutely. The PSI700A complies with EN 61010-1 CAT III 600V safety standards, ensuring safe operation in industrial settings.
The PSI700A is ideal for electricians, maintenance engineers, and professionals managing large electrical systems who need quick and reliable diagnostics.
Further reading and webinars
Troubleshooting
- What it means: Indicates an open phase in the three-phase system.
- Solution: Check connections on A, B, and C phases to identify and repair the faulty phase.
- What it means: The system phase rotation could not be determined, possibly due to incorrect connections or insufficient voltage.
- Solution: Ensure proper lead connections and verify the system voltage meets the 90–600V operational range.
- What it means: Likely a complete lack of input voltage or disconnected leads.
- Solution: Verify power to the system, ensure secure connections, and repeat the measurement.
Interpreting test results
- Clockwise (ABC): One specific lamp lights up to confirm this rotation.
- Counter-clockwise (CBA): Another lamp indicates this opposite sequence.
Three lamps will illuminate, confirming the presence of A, B, and C phases.
Only one relevant lamp will glow, highlighting the specific missing phase.
Observe which indicators fail to light up to identify faulty connections.
If all lamps illuminate correctly under specified operating voltage, the system is functioning as expected.
FAQ / Frequently Asked Questions
Yes, all PSI700A units come with a standard manufacturer's warranty. Please refer to your purchase documents for details.
Store the device in its provided canvas carrying case in a cool, dry location with temperatures between 0°C to 40°C to maintain performance and longevity.
Yes, replacement cases and alligator clips are available. Contact our service team for ordering details.
