UNI-T UT 511 Insulation Resistance Tester (100V - 1000V)

Multi-Voltage Output Insulation Testing: Provides selectable test voltage steps (100V, 250V, 500V, and 1000V) to accurately measure insulation resistance up to 10G Ohms.

Automated PI & DAR Diagnostics: Automatically calculates and displays Polarization Index (PI) and Dielectric Absorption Ratio (DAR) for comprehensive insulation quality analysis.

Low Resistance & Voltage Measurement: Measures AC and DC voltage up to 750V along with low-resistance continuity testing (0.1 ohms - 1000 ohms).

Large Dual Display with Analog Bar Graph: Features a clear backlit LCD screen displaying numerical test values alongside a 30-segment analog bar graph for visual trend tracking.

Continuous Measurement & Comparison Mode: Includes lock-test function for long-term continuous monitoring, baseline comparison mode, and upper/lower limit pass/fail alarms.

Data Storage & Internal Memory: Stores up to 18 sets of measurement readings for convenient field logging and post-test data review.

Housing & Accessory Hardware: Durable, impact-resistant ABS plastic casing equipped with heavy-duty insulated test leads, alligator clips, and a protective carrying case.

Technical Specifications:

Insulation Test Voltages: 100V, 250V, 500V, 1000V.

Insulation Resistance Range: 0.1M ohms to 10G ohms.

AC/DC Voltage Measurement: Up to 750V AC / 1000V DC.

Power Supply: Powered by 8 x 1.5V LR14 batteries or optional power adapter.

Safety & Usage Advice: CAT III 600V / CAT IV 600V Rated. Always discharge circuits and verify lines are de-energized before connecting high-voltage insulation test leads.

Maintenance & Cleaning: Keep test terminals, lead plugs, and housing dry and free of oil or dust using a soft, dry microfiber cloth.

Essential High-Voltage Diagnostic Tool for Electricians: Position as a professional-grade insulation resistance meter for electrical maintenance engineers, motor rewind shops, transformer technicians, and industrial panel builders.

Highlight Automated PI/DAR Calculations & 1000V Power: Emphasize its automated PI/DAR diagnostic ratios and wide 10G ohms measurement span as key pro-level capabilities.

Recommended Cross-Sell Add-ons: Pair with UNI-T UT 582+ Digital RCD (ELCB) Tester, Uni-T UT07 Socket Tester, Uni-T UT12D-Non Contact AC Voltage Detector, 24-1000V AC, and DL8003 12-240V AC.DC digital test pen.

High-Value Electrical Safety Hero: Feature prominently as a flagship high-voltage testing instrument in your Other Measuring Instruments collection.