Bender IR425-D4-2 Insulation Resistance Monitoring

Description

Bender IR425-D4-2 Insulation Resistance Monitoring

Product Dimensions：

The Bender ISOMETER® IR425-D4-2 is a sophisticated insulation monitoring device designed for unearthed AC, AC/DC, and DC systems (IT systems). It ensures electrical safety by continuously monitoring the insulation resistance and triggering an alarm before a fault becomes critical.

## Product Overview

The IR425-D4-2 is part of the Isometer family, specifically tailored for control circuits and smaller industrial applications. It monitors the insulation resistance ($R_F$) between the system and the protective earth (PE) conductor.

## Technical Specifications

## Key Advantages

• Predictive Maintenance: Detects gradual insulation degradation before fuses blow or RCDs trip, preventing unplanned downtime.

• AMP Technology: Patented measurement method that allows the device to work accurately in systems with high leakage capacitances or DC components.

• Compact Design: Two-module width (36mm) saves significant space in control cabinets.

• Real-time Monitoring: The LC display provides an immediate view of the current insulation resistance value in kΩ.

• Self-Monitoring: Automatically checks the connection to earth and the system, ensuring the device itself is functioning correctly.

## Application Areas

The IR425-D4-2 is ideal for IT systems (unearth networks) where high operational reliability is required:

1. Industrial Control Circuits: Monitoring PLC systems and automation lines.

2. Mechanical Engineering: Protection for complex machinery where power continuity is vital.

3. Power Plants: Secondary circuits and auxiliary systems.

4. Mobile Power Systems: Generators and portable power units used in remote locations.

## Important Safety Notes & Precautions

Caution: Always ensure the power is disconnected before installation to prevent electrical shock.

• Wiring Integrity: Ensure the connection to the Protective Earth (PE) is low-impedance and secure; otherwise, the measurement will be inaccurate.

• System Type: This device is strictly for IT systems. It must not be used in grounded (TN/TT) systems.

• Testing: Use the “Test” button periodically to verify the functional integrity of the internal relay and electronics.

• Dielectric Tests: If you are performing high-voltage insulation tests on your installation, the Isometer must be disconnected from the system to avoid damage to the internal measuring bridge.

Shipping Port: Xiamen, China

Payment: Bank of Chicago, Bank of Singapore

Express cooperation: fedex, DHL, UPS and your express account

Service: Professional Sales provides 24 hours /7 days online service

Please make an inquiry for more models：