Fluke 1535 and 1537 Insulation Resistance Testers

Fluke 1535 and 1537 Insulation Resistance Testers

Fluke 1535 and 1537 Insulation Resistance Testers
High-voltage insulation testing in a portable, user-friendly package

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Product Description Fluke 1535 and 1537 Insulation Resistance Testers

The Fluke 1535 and 1537 Insulation Resistance Testers are high-performance tools designed for efficient, accurate, and reliable insulation testing in both field and industrial environments. Compact yet robust, these testers are ideal for frontline troubleshooting across power distribution systems and solar power installations.

With user-selectable test voltages from 250 V to 2500 V and insulation resistance measurements up to 500 GΩ, these tools offer wide-ranging testing capability. Both models support automatic PI (Polarization Index) and DAR (Dielectric Absorption Ratio) calculations, improving diagnostic accuracy by minimizing environmental effects.

The Fluke 1537 goes even further with advanced features such as adjustable test voltages, dielectric discharge analysis, ramp testing, and data logging capabilities for further review and analysis via PC software.

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Key Features (Common to Both Models)

• Selectable Test Voltages: Choose from 250 V, 500 V, 1000 V, and 2500 V for diverse applications.

• High Insulation Resistance Measurement: Up to 500 GΩ for comprehensive diagnostics.

• Automatic PI and DAR Calculations: Enhance accuracy by compensating for environmental variables.

• High Measurement Capacity:

  • Up to 1,300 tests at 2500 V

  • Up to 6,500 tests at 250 V

• CAT IV 600 V Safety Rating: Enhanced user safety in high-energy environments.

• Built-in Voltage Alarm: Warns of unsafe voltage levels.

• Backlit Display: Large and easy-to-read, even in low light.

• Lightweight and Portable: Designed for mobility and ease of use in various environments.

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Additional Features (Exclusive to Fluke 1537)

• AC/DC Voltage & Resistance Measurement: Expands the utility of the tester beyond insulation testing.

• High Short-Circuit Current: Up to 5 mA for faster and more stable insulation resistance readings.

• Customizable Test Voltages: Fine-tune test voltage from 250 V to 2500 V in 100 V increments.

• Dielectric Discharge (DD) Calculation: Automatically identifies complex insulation faults.

• Ramp Test Mode: Gradually increases test voltage at 100 V/s to uncover hard-to-detect insulation weaknesses.

• Visual & Audible Continuity Indicators: Convenient testing without needing to look at the display.

• Customizable Test Parameters: Add labels, set durations, and save results for personalized testing routines.

• PC Connectivity: Transfer and manage test data using the included software.

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General Specifications

• Display Size: 73.5 mm x 104 mm

• Power Supply: 8 × AA alkaline batteries (IEC LR6)

• Dimensions (H × W × D): 184 mm × 211 mm × 93 mm

• Weight: 1.3 kg

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Environmental & Safety Specifications

• Operating Temperature: -10 °C to +50 °C

• Storage Temperature: -20 °C to +60 °C

• Operating Humidity:

  • <10 °C: Non-condensing

  • 10 °C to 30 °C: ≤80 % RH

  • 30 °C to 50 °C: ≤50 % RH

• Altitude:

  • Operation: up to 2,000 m

  • Storage: up to 12,000 m

• Ingress Protection: IP40

• Safety Compliance:

  • IEC 61010-1 (Pollution Degree 2)

  • IEC 61557-1, IEC 61557-2

  • IEC 61010-2-030 (600 V CAT IV)

  • IEC 61010-2-034 (2500 V DC)

• EMC Compliance:

  • IEC 61326-1 (Portable EM Environment)

  • IEC 61326-2-2, CISPR 11: Group 1, Class A

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Summary

The Fluke 1535 and 1537 Insulation Resistance Testers are versatile, high-voltage testing instruments suited for demanding insulation diagnostics in industrial and field applications. While both offer superior safety, portability, and testing flexibility, the 1537 stands out with its extended measurement features, customizable parameters, and advanced data handling. Whether you need fast diagnostics or detailed analysis, these tools deliver precision and reliability in a compact package.