GOSSEN M5000 High-Voltage Insulation Tester Set with Digital Display and Battery

Electrical engineers and maintenance technicians use the GOSSEN M5000 to verify insulation integrity on high-voltage equipment such as transformers, switchgear, and motors. This portable meter delivers selectable test voltages up to 5000 V and measures insulation resistance from 10 kΩ to 5 TΩ, making it suitable for both routine checks and diagnostic testing.

Key specifications

• Selectable test voltages: 50 V, 100 V, 250 V, 500 V, 1000 V, 2500 V, 5000 V
• Insulation resistance range: 10 kΩ to 5 TΩ
• Additional measurements: polarization index, dielectric absorption ratio, step voltage, ramp test, capacitance, AC/DC voltage up to 1000 V
• Short-circuit current: >1.2 mA
• Backlit LCD display
• Power: rechargeable NiMH battery pack (12 V / 2.4 Ah) or mains (90–260 V AC)
• Safety rating: CAT IV 600 V, CAT III 1000 V
• Internal memory for 1000 measured values
• USB interface for data transfer
• IP54 protection when closed
• Operating temperature: -10 °C to +50 °C

Why choose it

The M5000 combines high test voltage capability with advanced diagnostic functions like polarization index and step voltage testing, enabling thorough assessment of insulation condition. Its rugged design and IP54 rating make it reliable in demanding environments.

Ideal use cases

• Insulation testing on cables, transformers, and motors
• Preventive maintenance in industrial plants and power utilities
• Commissioning of high-voltage installations
• Quality assurance in manufacturing

Good to know

The meter stores up to 1000 measurements and includes METRISO D-LOG software for data analysis and reporting. It comes with high-voltage test leads, alligator clips, mains cable, USB cable, rechargeable battery, calibration certificate, and a carrying case.