2026 New Insulation Resistance Tester: Up to 200GΩ Test Range, 250V–5000V Selectable, CAT III 600V Safety 60B+/60D+/60E+

1. Wide Model Range for Every Application: From 250V to 5000V

The VICTOR 60 series Insulation Resistance Tester offers three models to suit different industrial needs. Whether you are testing low-voltage control panels or high-voltage power cables, there is a model for you.

• VC60B⁺ Insulation Resistance Tester: Perfect for general electrical maintenance. It provides 250V, 500V, and 1000V test voltages, with insulation resistance measurement ranges from 0.4MΩ up to 4.99GΩ. This model is ideal for testing motor windings, household wiring, and industrial control circuits.
• VC60D⁺ Insulation Resistance Tester: Designed for more demanding applications. With test voltages of 500V, 1000V, and 2500V, it measures insulation resistance up to 49.9GΩ. This Insulation Resistance Tester is well-suited for medium-voltage equipment, transformers, and switchgear.
• VC60E⁺ Insulation Resistance Tester: The flagship model for high-voltage professionals. It offers 1000V, 2500V, and 5000V test voltages, with an astounding maximum insulation resistance measurement of 200GΩ (200,000 MΩ). This Insulation Resistance Tester is essential for testing high-voltage cables, large power transformers, generators, and substation equipment.

2. Maximum 200GΩ Insulation Resistance Test – Unmatched Range

The VC60E⁺ Insulation Resistance Tester stands out with its ability to measure up to 200GΩ at 5000V. This extreme range allows technicians to detect insulation degradation long before a complete failure occurs. For preventive maintenance on high-voltage assets like 11kV or 33kV cables, a standard Insulation Resistance Tester cannot provide the necessary resolution. The VICTOR 60E⁺ delivers it with confidence, helping you identify moisture ingress, carbon tracking, and aging insulation.

3. Built-in Overload Protection and Automatic Voltage Release – Safety First

Safety is the number one priority when working with high-voltage insulation tests. Every VICTOR 60 series Insulation Resistance Tester features:

• Overload protection function: Prevents damage to the internal circuitry if the user accidentally connects to a live circuit.
• Automatic voltage release function: After completing an insulation test, any stored capacitive charge in the cable or motor winding is automatically discharged through the tester. This protects the user from dangerous electric shocks and prevents damage to the device.

These safety features make the VICTOR 60 series Insulation Resistance Tester one of the safest choices for field use.

4. CAT III 600V Safety Rating and Voltage Measurement Capabilities

All three models are rated CAT III 600V, meaning they are safe for use on industrial and commercial power distribution panels, junction boxes, and busbars. Additionally, each Insulation Resistance Tester doubles as a digital voltmeter:

• VC60B⁺: Measures DC voltage from ±20V to 1500V and AC voltage from 20V to 1000V (45Hz–1kHz).
• VC60D⁺ & VC60E⁺: Measure DC voltage from ±20V to 1000V and AC voltage from 20V to 750V.

Before performing an insulation test, technicians can verify that the circuit is de-energized – a critical step in lockout/tagout procedures. This dual-functionality reduces the number of tools you need to carry.

5. High-Contrast Display with White Backlight

The VC60B⁺ and VC60D⁺ feature a 2000-count display, while the flagship VC60E⁺ offers a larger 4000-count display. All models include a white backlight (B/L) , allowing technicians to work in dimly lit switchgear rooms, underground vaults, or nighttime troubleshooting scenarios. The "HOLD" function freezes readings for easy recording in your notebook or tablet.

6. Robust Environmental Specifications for Field Use

A professional Insulation Resistance Tester must survive harsh conditions. The VICTOR 60 series is built for real-world environments:

• Operating temperature: 0°C to 40°C
• Storage temperature: -20°C to 60°C
• Altitude: Up to 2000 meters, suitable for both indoor and outdoor use.
• Humidity tolerance: VC60B⁺/60D⁺ operate at ≤85% RH; VC60E⁺ at ≤60% RH (reflecting its high-voltage precision requirements).

The compact size (178×110×59mm) and light weight (approximately 600 grams) make this Insulation Resistance Tester easy to carry up ladders, into ceilings, or across large industrial sites.

7. User-Friendly Features: Auto Shutdown, Low Battery Indication, and Easy Battery Access

• Automatic shutdown (15 minutes): Prevents battery drain if you forget to turn off the Insulation Resistance Tester after completing a job.
• Low battery indicator: A "▲" symbol appears on the display when the eight 1.5V alkaline batteries (LR6) need replacement.
• Over-range indication: The display shows "0L" for voltage overload. For insulation resistance, each model clearly indicates when the measurement exceeds its maximum range (e.g., >200GΩ on the 60E⁺).