Hioki IR4057-20 Insulation Resistance Tester 1000V Measurement Up to 4000MΩ for Electrical Installations

The Hioki IR4057-20 Insulation Resistance Tester is a high-performance tool designed for fast and accurate insulation testing in a variety of electrical installations. With a wide test voltage range of up to 1000V and the ability to measure insulation resistance up to 4000MΩ, the IR4057-20 is ideal for use in residential, commercial, and industrial settings. It features a clear, easy-to-read digital display with an analog bar graph, providing users with precise measurements and a quick visual representation of insulation integrity. The IR4057-20 also includes advanced safety features like automatic discharge, ensuring safe operation even when working with high-voltage circuits. Its robust design and user-friendly interface make it the perfect tool for professionals who require reliable and efficient insulation testing.

Key Features:

• Wide Test Voltage Range: Offers five selectable test voltages—50V, 125V, 250V, 500V, and 1000V—making it suitable for a variety of insulation testing applications.
• High Insulation Resistance Measurement: Capable of measuring insulation resistance up to 4000MΩ, ensuring comprehensive testing of electrical equipment and installations.
• Digital Display with Analog Bar Graph: Combines a digital readout with an analog bar graph, allowing for both precise measurements and quick visual assessment.
• Fast Response Time: Delivers rapid readings, enabling users to complete tests quickly and efficiently.
• Automatic Discharge Function: Automatically discharges residual voltage after testing, ensuring user safety when working with high-voltage circuits.
• Durable and IP40-Rated: Designed to withstand tough environments, with an IP40 rating for dust and water resistance, making it suitable for fieldwork.
• Data Hold Function: Allows users to freeze the displayed reading for easier recording and analysis of results.
• Battery-Powered Operation: Operates on standard AA batteries, providing long-lasting power for extended testing sessions.

Specifications:

• Test Voltage Ranges: 50V, 125V, 250V, 500V, 1000V.
• Insulation Resistance Range: Up to 4000MΩ.
• Accuracy: ±2% of reading.
• Display Type: Digital readout with analog bar graph.
• Discharge Function: Yes, automatic discharge after measurement.
• Safety Rating: CAT IV 600V, CAT III 1000V.
• IP Rating: IP40 for dust and water resistance.
• Power Supply: 4 x AA batteries (included).
• Operating Temperature: -10°C to 50°C.
• Dimensions: Compact and portable design for easy handling.

Box Includes:

• Hioki IR4057-20 Insulation Resistance Tester
• Test Leads with Alligator Clips
• 4 x AA Batteries
• User Manual
• Carrying Case

Applications:

• Electrical Safety Inspections: Ideal for testing insulation resistance in residential, commercial, and industrial installations, ensuring compliance with safety standards.
• Maintenance of Motors and Generators: Suitable for checking insulation integrity in motors, generators, and transformers to prevent unexpected failures.
• Wiring System Testing: Perfect for verifying the insulation quality of wiring systems during installation or routine maintenance.
• Industrial Equipment Diagnostics: Helps ensure the safety and performance of machinery and control panels by testing their insulation.
• Field Service and Repair: Lightweight and easy to transport, making it an excellent choice for technicians performing on-site insulation testing.