Sanwa MG5000 High Voltage Digital Insulation Tester, 1 Teraohm Megger Resistance

HIGHLIGHTS:

The Sanwa MG5000 High Voltage Digital Insulation Tester is a professional-grade, all-digital megger resistance tester from Sanwa — Japan's most trusted name in precision electrical measurement instruments. When you purchase through us, you receive a genuine, factory-authentic Sanwa instrument — the same tool relied upon by electrical engineers, contractors, and maintenance professionals worldwide for over half a century. There are no substitutes for the real thing when working on high-voltage electrical systems, and this is the real thing.

Capable of measuring insulation resistance up to 1 Teraohm (1TΩ) across five DC test voltage ranges — 250V, 500V, 1000V, 2500V, and 5000V — the MG5000 covers the full spectrum of insulation testing requirements from low-voltage residential circuits to high-voltage industrial power equipment rated up to CAT IV 600V under IEC61010-1. Measurement accuracy is rated at ±5%+3 across the primary ranges, delivering the precision required for reliable insulation integrity assessment on critical electrical infrastructure.

The MG5000's 1,200-count LCD display with backlight and integrated 36-point bar graph provide clear, easy-to-read insulation resistance readouts in all lighting conditions. Five voltage ranges are automatically adjusted by the instrument — eliminating manual range selection and reducing the risk of operator error during testing. The Auto Hold function automatically captures and holds measured values on screen, while the auto discharge function safely dissipates residual charge from the tested circuit after measurement — a critical safety feature when working on capacitive systems. An auto power save mode activates approximately 10 minutes after the last operation to extend battery life in the field.

Built to withstand demanding job site conditions, the MG5000 carries an IP54 rating for dust and splash water resistance, and its design is fully compliant with IEC61010-1 safety standards. Advanced diagnostic functions including Dielectric Absorption Ratio (DAR) and Polarization Index (PI) measurements allow thorough assessment of insulation condition and degradation over time — essential for predictive maintenance programs on motors, transformers, cables, and switchgear.

FEATURES:

• Genuine Sanwa Instrument – Authentic factory-original Sanwa MG5000, backed by Sanwa's reputation as Japan's leading precision electrical measurement brand.
• Up to 1 Teraohm (1TΩ) Resistance Measurement – Maximum insulation resistance range for comprehensive high-voltage insulation integrity testing.
• 5 DC Test Voltage Ranges (250V / 500V / 1000V / 2500V / 5000V) – Full voltage coverage from low-voltage circuits to high-voltage industrial power equipment.
• ±5%+3 Measurement Accuracy – High-precision readings for reliable, trustworthy insulation assessment on critical electrical systems.
• Auto Voltage Range Selection – Automatically adjusts measurement range for faster, error-free operation in the field.
• 1,200-Count LCD Display with Backlight – Clear, high-contrast display for easy reading in all lighting conditions.
• 36-Point Bar Graph – Visual insulation resistance bar graph for quick, intuitive reading of measurement levels.
• Auto Hold Function – Automatically captures and holds measured values on screen for convenient single-operator testing.
• Auto Discharge Function – Safely dissipates residual charge from tested circuits after measurement for enhanced operator safety.
• Dielectric Absorption Ratio (DAR) & Polarization Index (PI) – Advanced diagnostic functions for thorough insulation condition assessment and predictive maintenance applications.
• Short-Circuit Current Up to 4mA – Sufficient test current for reliable insulation breakdown detection.
• 4-Step Battery Monitor – Clear battery level indication keeps the operator informed of remaining power during field use.
• Auto Power Save – Activates approximately 10 minutes after last operation to extend battery life.
• IP54 Rated – Dust and splash water resistant design for reliable performance in demanding job site environments.
• IEC61010-1 CAT IV 600V Compliant – Meets the highest measurement circuit safety requirements for professional high-voltage electrical testing.

WHAT'S IN THE BOX:

• 1 x Sanwa MG5000 High Voltage Digital Insulation Tester
• 3 x Test Leads
• 1 x Instruction Manual
• 1 x Hard-Shell Carry Case