Field Instruments

Product Overview

The Fluke 1537 Insulation Resistance Tester is a high-performance, portable insulation tester engineered for advanced electrical diagnostics in industrial, utility, and commercial environments. With selectable test voltages up to 5000 V and an extended insulation resistance measurement range, the Fluke 1537 is designed for professionals who require dependable results on high-voltage equipment.

Built with Fluke’s renowned durability and safety, the 1537 supports advanced diagnostic testing such as PI and DAR, enabling early detection of insulation deterioration. Its ergonomic design, intuitive controls, and automated safety features help reduce testing time while ensuring accurate, repeatable measurements during commissioning, maintenance, and troubleshooting.

Key Features

• High-voltage insulation testing up to 5000 V
• User-selectable test voltages: 250 V, 500 V, 1000 V, 2500 V, 5000 V
• Wide insulation resistance measurement up to 1 TΩ
• High test current for fast, stable, and reliable readings
• PI (Polarization Index) & DAR (Dielectric Absorption Ratio) diagnostics
• Automatic discharge of capacitive circuits for enhanced user safety
• Large, easy-to-read digital LCD display
• Rugged, industrial-grade construction for harsh environments
• Long battery life for extended field operation
• Suitable for heavy-duty industrial and utility applications

Technical Specifications

Brand: Fluke
Model: 1537
Type: Insulation Resistance Tester

Insulation Test Voltages

• 250 V
• 500 V
• 1000 V
• 2500 V
• 5000 V

Insulation Resistance Range

• Up to 1 TΩ depending on test voltage

Functions

• Insulation resistance measurement
• PI / DAR diagnostic testing
• Automatic discharge after test completion
• Data hold function
• Battery status indication

Display

• Large digital LCD display with clear field visibility

Safety Ratings

• CAT IV 600 V
• Designed for high-energy industrial and utility environments

Construction

• Rugged, ergonomic handheld design
• Field-ready for demanding industrial conditions

Power Supply

• Battery operated

Applications

• High-voltage motor and transformer insulation testing
• Cable, busbar, and switchgear insulation checks
• Electrical commissioning and acceptance testing
• Industrial and utility electrical inspections
• Preventive and predictive maintenance programs
• Troubleshooting insulation degradation in critical assets

Why Buy from FieldInstruments.lk?

• 100% genuine Fluke instruments
• Fast delivery across Sri Lanka
• Competitive pricing
• Trusted supplier for professional test and measurement equipment
• Local technical support and reliable after-sales service

Fieldinstruments.lk
50/3, Angampitiya Rd, Ethul Kotte, Sri Lanka. 10100.
Phone: +94718555888 Email: info@fieldinstruments.lk