Description

HT Instruments Macrotest G3

The HT Instruments Macrotest G3 is a high-performance multifunction tester designed for comprehensive electrical testing in industrial, commercial, and laboratory environments. This advanced device combines multiple testing functions into a single, portable instrument, providing accurate and reliable results for electrical installations, maintenance, and safety verification.

Equipped with intuitive controls and a high-resolution display, the Macrotest G3 allows users to perform insulation resistance testing, continuity checks, loop and line impedance measurements, RCD testing, and earth ground resistance analysis. Its versatile functionality makes it suitable for electricians, service engineers, and quality assurance professionals who require a compact yet powerful tester for a wide range of applications.

Key Features:

• Multifunction Testing: Insulation resistance, continuity, loop/line impedance, RCD testing, and earth ground resistance.

• High Accuracy & Reliability: Provides precise measurements compliant with international electrical standards.

• User-Friendly Interface: Large, high-contrast display and easy navigation for fast testing and clear results.

• Portable Design: Lightweight and rugged for field use in various industrial and commercial environments.

• Safety Compliance: Designed to meet IEC and other relevant electrical safety standards.

• Data Logging & Storage: Enables recording of test results for documentation, analysis, and reporting purposes.

The HT Instruments Macrotest G3 offers professionals a complete solution for electrical testing, combining reliability, precision, and versatility in a single device, making it an essential tool for maintenance, inspection, and compliance verification tasks.

Technical Specifications

Display & Memory

• Display: Color TFT touchscreen with intuitive interface

• High-resolution screen for easy navigation and function selection

• Internal Memory: Stores up to 999 measurements with 3 marker levels

• Connectivity: Integrated Optical-USB and Wi‑Fi for PC connection and app integration

Power Supply

• Powered by 6 AA batteries (rechargeable NiMH or standard)

• Battery Life: Supports over 500 tests per function before recharging

• Auto Power Off feature can be disabled after inactivity

Electrical Testing Features

The Macrotest G3 provides comprehensive electrical testing compliant with standards:

• Insulation Resistance: 100 V, 250 V, 500 V, 1000 V DC

• Continuity: Protective conductor continuity (200 mA)

• Loop/Line Impedance: L-L, L-N, L-PE measurements

• Earth Resistance: Voltametric method and optional clamp

• Phase Sequence: Phase rotation verification

• Contact Voltage: Measurement of touch voltage

• RCD Testing: Type A, AC, B, B+ and F residual current devices

• Leakage Current: Optional with clamp

• Voltage, Current, Power: True, reactive, and apparent power

• Harmonics & THD: Up to 25th order with THD%

• Environmental Parameters: Optional temperature, humidity, and lighting measurement

Physical & Environmental Conditions

• Dimensions: 225 × 165 × 75 mm

• Weight: ~1.2 kg (including batteries)

• Operating Environment: 0 °C to 40 °C, humidity <80 % RH

• Storage Environment: –10 °C to 60 °C

• Protection & Standards:

  • CAT IV 300 V, maximum 415 V between inputs

  • IP40 protection

  • Compliance with IEC/EN61557-1 to IEC/EN61557-7, IEC/EN61010-1, and other safety standards

The Macrotest G3 is a complete professional multifunction tester for electrical installations, covering insulation, continuity, impedance, RCD, and power measurements. It features a touchscreen display, built-in Wi‑Fi/USB, and internal memory for test documentation and reporting.