Field Instruments

Product Overview
The Testo 770-3 is a high-precision TRMS clamp meter designed for professional electrical measurements in tight switching cabinets and industrial environments. It features a unique retractable pincer arm, allowing easy and safe gripping of individual conductors even in confined spaces.

The instrument automatically detects AC/DC voltage and supports a wide range of electrical measurements including current, voltage, resistance, continuity, frequency, capacitance, and temperature (via Type K thermocouple). With Bluetooth connectivity, the Testo 770-3 enables wireless data transfer to the Testo Smart App for real-time display, graphical trend analysis, and professional documentation.

Thanks to its improved resolution, the Testo 770-3 offers increased precision in the lower current range, making it ideal for advanced electrical diagnostics and maintenance tasks.

Key Features
• TRMS measurement for accurate readings
• Retractable pincer arm for easy measurement in tight spaces
• Automatic AC/DC voltage detection
• Bluetooth connectivity with Testo Smart App
• Measurement of current, voltage, resistance, continuity, frequency, capacitance, and temperature
• µA current measurement range for sensitive applications
• High precision in the lower current range
• Large two-line display for clear reading
• Robust design for industrial use

Technical Specifications
• Make: Testo
• Model: 770-3
• Measurement Type: TRMS clamp meter
• Voltage Measuring Range:
AC: 1 mV to 1000 V
DC: 0.1 mV to 1000 V
• Current Measuring Range: 0.01 to 600 A AC/DC
• µA Measuring Range: 0.1 to 600 µA AC/DC
• Basic Accuracy: ±0.1 %
• Resistance Measuring Range: 0.01 Ω to 60 MΩ
• Frequency Measuring Range: 0.01 Hz to 9.999 kHz
• Capacitance Measuring Range: 0.001 nF to 60 mF
• Temperature Measuring Range: −20 to +500 °C (Type K probe)
• Continuity Test: Yes
• Diode Test: Yes
• Display Resolution: 6000 counts
• Measurement Category: CAT IV 600 V / CAT III 1000 V
• Operating Temperature: −10 to +50 °C
• Storage Temperature: −15 to +60 °C
• Dimensions: 243 × 96 × 43 mm
• Weight: Approx. 378 g
• Approvals: CSA / ETL / CE
• Standards: EN 61326-1, EN 61140

Included Accessories
• Testo 770-3 TRMS Clamp Meter
• Measuring cables
• Batteries
• Transport bag
• Calibration protocol
• User documentation

Applications
• Electrical installation and maintenance
• Measurements in switching cabinets
• Industrial electrical diagnostics
• HVAC electrical testing
• Preventive maintenance and troubleshooting
• Energy and power analysis

Why Buy from fieldinstruments.lk
• Supply of genuine Testo electrical measuring instruments
• Competitive pricing with island-wide delivery
• Local technical support and expert guidance
• Reliable after-sales service
• Trusted supplier of industrial testing and measuring instruments

Fieldinstruments.lk
50/3, Angampitiya Rd, Ethul Kotte, Sri Lanka. 10100.
Phone: +94718555888 Email: info@fieldinstruments.lk