The Fluke 1535 and 1537 2,500 V Insulation Resistance Testers are engineered to simplify frontline troubleshooting whether you’re on the factory floor or working in the field at a solar installation. With user selectable test voltages from 250 V to 2,500 V and resistance measurements up to 500 GΩ these testers allow you to cover more workload with a single tool. Equipped with an intuitive user interface, a short circuit current of up to 5 mA and a CAT IV 600 V rating these portable high-voltage insulation testers can deliver rapid and stable resistance measurements no matter where you take them. The 1537 Insulation Resistance Tester also allows you to store measurements for later review or PC transfer, using the provided software.
• Selectable Voltage Tests: Tailor your tests with user-selectable voltages of 250 V, 500 V, 1000 V, and 2500 V to cover both industrial and solar applications.
• Extended Insulation Resistance Measurement: Reach up to 500 GΩ in insulation resistance measurement for a thorough analysis.
• Intelligent Calculations: Automatically calculate Polarization Index (PI) and Dielectric Absorption Ratio (DAR), minimizing the influence of environmental factors.
• High Measurement Capacity: Execute up to 1,300 measurements at 2,500 V or 6,500 measurements at 250 V on a single charge, enhancing productivity.
• Enhanced Safety Features: Benefit from a CAT IV 600V rating and a built-in voltage alarm function for heightened safety during operations.
The Fluke 1537 has these additional features:
• Extended Measurements: The Fluke 1537 enhances your testing capabilities with AC/DC voltage and resistance measurements.
• Stable Resistance Measurements: Achieve faster, more stable insulation resistance measurements with a short circuit current up to 5mA.
• Fine-tunable Test Voltage: Adjust the test voltage from 250 V to 2500 V in 100 V increments to meet specific testing requirements.
• Dielectric Discharge Rate Calculation: Automatically calculate the dielectric discharge rate (DD) to aid in identifying elusive insulation issues.
• Ramp Test Mode: Linearly increase the applied test voltage 100 V/s to help identify potentially hard to identify fault conditions.
• Visual and Audio Continuity Indicator: Verify continuity visually on the screen display or with the audible indicator so you can focus on your testing procedure without looking at the display.
• Customizable Testing Parameters: Set user-defined labels, adjust test duration, and store measurement results for a tailored testing experience.
• Effortless Data Management: Download and manage data effortlessly with the provided PC software.
• Extended Warranty: Enjoy peace of mind with an extended 3-year warranty.

Key Features
• User-selectable voltages of 250 V-2500 V
• Up to 500 GΩ insulation resistance measurement
• Short circuit current up to 5mA for fast, stable measurements
• Automatically calculate PI and DAR
• Perform 1,300+ insulation tests on a single charge

Boost your performance or your team's performance with 320 x 240 resolution. Infrared images captured with the TiS60+ record smaller temperature differences from a long distance. If you are new to thermal imaging or if your camera is being used by a team with varying levels of thermal imaging experience, the TiS60+ offers fixed focus with the ability to record quality images from a distance.



The TiS60+ lets you see what the eye cannot see and uncovers problems that other technologies can't detect. The TiS60+ is easy to use and can be a tool your team can rely on.

- Easy-to-use fixed focus

- 3.5 inch LCD screen

- The ability to take, review, and save images with one hand

- Fluke Connect™ compatibility for wireless sharing



Often, the next big challenge with infrared images is ensuring the images captured by the team can quickly be added to the work phase. The TiS60+ is

equipped with IR Photo Notes which makes this easy. This feature makes it easy for the camera operator to add a photo associated with the image documenting the name of the equipment and the room location associated with the thermal image so that the person creating the work order can send a technician to the correct location to perform repairs.



Be prepared with everything you need to lay the groundwork for your equipment, implement a preventative maintenance program and set working standards. The Fluke TiS60+ gives you the thermal data you need to get the job done.

• 3 phase indication

• Indication of phase rotation

• Clear LCD display

• No battery required

The Fluke VT Series is built with legendary Fluke toughness and quality. With a compact design and enhanced functionality, temperature measurements are visualized, so you can obtain clear and accurate infrared thermal images.