Insulation Resistance Tester 500-2500V High Voltage Megohmmeter Auto Range

Key features

• High-Voltage Insulation Testing: This professional megohmmeter delivers selectable test voltages of 500V, 1000V, 2000V and 2500V, measuring insulation resistance from 2MΩ up to 50GΩ. Accuracy is ±5.0% rdg + 5 digits for 1MΩ-20GΩ, and ±10.0% rdg + 5 digits for 20GΩ-50GΩ. Specifically engineered for transformers, switchgear, motors, cables and industrial equipment requiring higher test voltage thresholds. Auto-range function simplifies operation.
• True RMS Voltage & Resistance: Beyond insulation resistance, this tester measures DC voltage (up to 1000V) and AC true RMS voltage (up to 750V), plus resistance (up to 40MΩ). Built-in audible continuity buzzer (＜50Ω) allows quick short-circuit and connection verification. A complete diagnostic solution for electrical professionals.
• Double Insulation & Auto Power-Off: HV indicator light provides clear visual warning when high voltage is active. Robust back EMF protection safeguards the instrument from inductive load damage. Double insulation design complies with IEC-1010 safety standards (Pollution Degree 2, Overvoltage Category II). Short-circuit output current is approximately 1mA with strong load capacity. Auto power-off after 15 minutes conserves battery.
• Data Hold & Over-Range Indication: 4000-count VA color screen paired with 41-segment analog bar graph (display size: 71×53mm, character height 24mm) delivers real-time visual feedback. Data hold locks measurements for easy documentation. Over-range "OL" indication and low battery alert prevent errors and unexpected shutdowns.
• Battery Powered & Portable Design: Durable flip cover with shockproof, dustproof and moisture-proof sealing protects against harsh conditions. Powered by 6×AA 1.5V batteries (R6AA SUM-3) or optional external 9V DC power supply. Lightweight 600g design (including batteries) with compact 185×122×68mm dimensions ensures easy carrying and one-handed operation

PR-67B — High-Voltage Digital Megohmmeter with Auto-Ranging & Advanced Diagnostics The PR-67B is a professional-grade auto-ranging high-voltage insulation resistance tester (megohmmeter) engineered for heavy-duty electrical maintenance and diagnostic applications. Delivering selectable test voltages up to 2500V and insulation resistance measurement up to 50GΩ, the 67B outperforms standard insulation testers — making it the ideal choice for industrial transformers, switchgear, motors, and high-voltage cable testing where higher test voltage thresholds are required. What You Can Measure Insulation Resistance: 2MΩ to 50GΩ, 4 selectable test voltages (500V/1000V/2000V/2500V). Accuracy: ±5.0% rdg + 5 digits (1MΩ-20GΩ), ±10.0% rdg + 5 digits (20GΩ-50GΩ). DC Voltage: Up to 1000V, accuracy ±0.5% to ±0.8% rdg + 2 digits. AC True RMS Voltage: Up to 750V (40Hz-1kHz), accuracy ±1.0% to ±1.5% rdg + 3 digits. Resistance: Up to 40MΩ, accuracy ±1.0% to ±1.5% rdg. Continuity Buzzer: Audible alert when resistance is below 50Ω for quick short-circuit and connection verification. Key Features Higher Voltage Output for Heavy-Duty Testing — Select from 500V, 1000V, 2000V, or 2500V test voltages for

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