BENDER IRDH275-435 Insulation Monitoring Device

Product Description

The BENDER IRDH275-435 is an ISOMETER insulation monitoring device designed for unearthed (IT) AC and DC power systems. It monitors insulation resistance and provides alarms when insulation deterioration is detected, helping improve electrical safety and identify insulation faults before they cause equipment problems.

Bender

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Technical Specifications

ManualsLib

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Key Features and Advantages

• Continuous Insulation Monitoring: Detects declining insulation resistance in unearthed power systems.

• Adjustable Alarm Thresholds: Provides two independently adjustable alarm response values.

• Automatic Self-Test: Supports device self-testing to help verify operational status.

• System Adaptation: Automatically adapts to existing system leakage capacitance.

• Dual Relay Outputs: Supports alarm signaling and integration with external control systems.

• Clear Status Display: Illuminated LCD displays measurement values and device information.

Typical Applications

• Industrial power distribution systems

• Manufacturing plants and production lines

• Electrical control cabinets

• AC/DC systems with rectifiers and converters

• Insulation fault monitoring and preventive maintenance

Installation and Ordering Precautions

1. Verify the exact model IRDH275-435; other variants may require different auxiliary supply voltages.

2. Confirm that the monitored system voltage is within the specified range.

3. Installation and wiring must be performed by qualified electrical personnel.

4. Follow the manufacturer's wiring diagram and grounding requirements.

5. Isolate the device from the monitored system before performing insulation or voltage tests.

6. Check the unit's condition, terminal integrity, and relay operation before commissioning.