Testo 755-1 Current/Voltage Meter

The Testo 755-1 current/voltage meter is a handy tool for Australian HVAC techs and electricians, designed for quick, accurate electrical checks. It automatically detects what you're testing, saving time and preventing misreads on busy job sites, especially when you're jumping between fault-finding a control circuit and checking motor draw. This unit is built tough for daily use on various systems, from residential split systems to commercial chillers.

Best For

• HVAC service technicians
• Electricians
• Maintenance teams
• Refrigeration apprentices
• Competent DIYers working on electrical systems

Compatibility

This meter is compatible with a wide range of electrical systems, handling up to 600 V AC/DC and 200 A AC. It's suitable for testing residential, commercial, and industrial electrical circuits, including control panels, motor circuits, and general power supplies. If you're running a different model or need specific CAT ratings, check the included accessories and specs before ordering.

Features

• Automatic measurement parameter detection and range selection, speeding up workflow and reducing errors.
• Clear polarity detection for DC circuits, essential for commissioning and fault-finding.
• Integrated 3-phase sequence check with motor rotation indication, a crucial feature for motor installations and troubleshooting.
• Built-in flashlight for illuminating dimly lit areas, making work easier in plant rooms or roof spaces.
• Rugged design with exchangeable measuring tips for easy maintenance and extended tool life.
• Convenient integrated lead holder in the housing for safe and organised storage on the go.

Technical Specifications

What's in the Box

• Testo 755-1 Current/Voltage Meter
• Batteries
• Measuring tips (standard set)

Using It on the Job

1. Before any electrical work, ensure power is isolated and locked out where necessary. Always use appropriate PPE.
2. For voltage tests, simply apply the probes to the circuit. The 755-1 automatically detects AC/DC voltage and selects the correct range.
3. To measure AC current, use the open-jaw clamp around one conductor. The meter will auto-select the current range.
4. When checking 3-phase systems, follow the on-screen indicators for phase sequence and motor rotation.
5. Utilise the continuity test for quick checks on wiring and fuses. The audible indication helps when you can't see the screen directly.
6. After use, store the unit with the leads secured in the integrated holder. Inspect measuring tips regularly and replace if worn.

Limitations & Safety Notes

• Always ensure the unit's CAT rating is appropriate for the system you are working on. This unit is CAT IV 600V / CAT III 1000V.
• Do not exceed the specified voltage or current ranges to prevent damage to the meter or personal injury.
• Never attempt to measure current on uninsulated conductors or circuits carrying active loads beyond the meter's capacity.
• Electrical work requires proper training and adherence to AS/NZS 3000 (Wiring Rules) and Safe Work Australia guidelines.
• Regularly inspect leads and tips for damage; replace them immediately if any wear or cracks are visible.

On a busy rooftop, a meter that automatically detects AC/DC voltage and range is a real time-saver. Don't waste minutes fiddling with dials – get straight to fault-finding and keep the job moving.

Pair With

Pair with a good set of insulated hand tools and a sturdy electrical lockout tagout kit for complete workplace safety. Consider our range of Testo electrical testers for specialised applications.