2026 New Insulation Resistance Tester: 100-Group Data Storage, PI/DAR Measurement, Auto Discharge, Up to 100GΩ Range, CAT III 600V 60F/ 60G/ 60H

1. Three Models to Match Your Exact Testing Needs

Not every job requires the same test voltage or resistance range. VICTOR offers three specialized versions of this Insulation Resistance Tester:

• VICTOR 60F Insulation Resistance Tester: The flagship model with a maximum range of 0–100GΩ (100,000 MΩ). This Insulation Resistance Tester is designed for high-voltage cable testing, large power transformers, and generator stator windings where extreme insulation resistance values are expected.
• VICTOR 60G Insulation Resistance Tester: With a maximum range of 0–50GΩ, this Insulation Resistance Tester is ideal for medium-voltage switchgear, industrial motors, and substation busbars.
• VICTOR 60H Insulation Resistance Tester: Offering a range of 0–20GΩ, this Insulation Resistance Tester is perfectly suited for low-voltage distribution panels, control circuits, HVAC equipment, and routine maintenance on existing installations.

All three models share the same intuitive user interface, meaning technicians can switch between them without retraining.

2. Large Screen Display with White Backlight – Readable in Any Condition

Every VICTOR 60F/60G/60H Insulation Resistance Tester features a 2000-word HD large screen display with brilliant white LED backlight. Unlike basic testers that become unreadable in dark switchgear rooms or sun-drenched substations, this Insulation Resistance Tester provides crystal-clear visibility at all times. The large digits allow you to read resistance values from a distance, improving safety by keeping you away from live terminals while monitoring the test.

3. Built-in Data Storage – Save and Recall Measurements

For the first time in this class, the VICTOR 60 series Insulation Resistance Tester includes onboard data storage. Using the MEM, SAVE, and CLR buttons, technicians can:

• Store critical insulation resistance readings directly in the Insulation Resistance Tester.
• Recall historical data to track insulation degradation over time.
• Clear old data when starting a new testing campaign.

This feature eliminates the need for pen and paper in hazardous environments. When you return to the office, you have a digital record of every insulation test performed by your Insulation Resistance Tester, improving compliance and reporting accuracy.

4. Automatic Discharge Function – Uncompromised Safety

High-voltage insulation testing charges the capacitance of cables and windings. Without proper discharge, the stored energy can deliver a lethal shock. Every VICTOR 60F/60G/60H Insulation Resistance Tester includes an automatic voltage release (discharge) function. After completing a test, the Insulation Resistance Tester automatically discharges the device-under-test through an internal safety resistor. The user does not need to manually short the terminals – a process that is both dangerous and easy to forget. This safety feature alone makes this Insulation Resistance Tester the preferred choice for safety-conscious organizations.

5. Over-Range Prompt and Automatic Shut-Down

• Over-range prompt (OL): When the insulation resistance exceeds the maximum range of the Insulation Resistance Tester, the display clearly shows "OL" (over-limit). This tells the technician that the insulation is excellent – not that the tester has failed.
• Automatic shut-down: To preserve battery life, this Insulation Resistance Tester automatically powers off after a period of inactivity. When working on long cable conditioning or absorption ratio (DAR/PI) tests, you can disable this feature or simply press a button to wake the Insulation Resistance Tester.

6. LOCK Function for Hands-Free Continuous Testing

Traditional insulation testers require you to hold down a "TEST" button continuously – a tiring process during long-duration tests like polarization index (PI) or dielectric absorption ratio (DAR). The VICTOR 60 series Insulation Resistance Tester features a LOCK button that latches the test voltage on continuously. This allows you to:

• Step away from the Insulation Resistance Tester to check connections.
• Record values at specific time intervals without finger fatigue.
• Perform PI tests over 10 minutes without holding a button.

7. CAT III 600V Safety Rating and Professional Terminals

All three models carry a CAT III 600V safety rating, meaning this Insulation Resistance Tester is safe for use on industrial power distribution equipment, fixed installations, and busbars. The terminals are clearly labeled:

• LINE (MAX 1000V): High-voltage output terminal.
• EARTH (GUARD): Return terminal with guard terminal to eliminate surface leakage currents on long cables.
• GUARD: Allows the Insulation Resistance Tester to measure only through the main insulation, bypassing surface contamination.

8. Simple Operation with Advanced Setup Options

The VICTOR 60 series Insulation Resistance Tester balances simplicity for field use with advanced features for engineering work. The SETUP button provides access to:

• Test voltage selection (multiple voltages depending on model).
• Comparator (COMP) mode for pass/fail testing.
• 2ndF (second function) keys for extended capabilities without clutter.

The V/Riso button toggles between voltage measurement and insulation resistance, allowing you to verify zero energy before testing – a critical lockout/tagout step.

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Comparison Table: Which Insulation Resistance Tester is Right for You?

Feature	VICTOR 60F	VICTOR 60G	VICTOR 60H
Max insulation range	100GΩ	50GΩ	20GΩ
Display	2000-count HD	2000-count HD	2000-count HD
White backlight	✓	✓	✓
Data storage (MEM/SAVE)	✓	✓	✓
Auto discharge	✓	✓	✓
Over-range prompt (OL)	✓	✓	✓
Auto shut-down	✓	✓	✓
LOCK for continuous test	✓	✓	✓
CAT III rating	600V	600V	600V
Best for	HV cables, generators	MV switchgear, motors	LV panels, HVAC, controls