BENDER IRDH375-435 Insulation Monitoring Device

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BENDER IRDH375-435 Insulation Monitoring Device

Product Overview

The IRDH375-435 is a high-performance insulation monitoring device (IMD) designed for ungrounded AC/DC systems (IT systems). It continuously monitors insulation resistance and triggers alarms when faults are detected, ensuring electrical safety in industrial and commercial applications .

Key Features

✅ Advanced Insulation Monitoring

• Monitors AC (0–793V) and DC (0–650V) systems, with optional voltage couplers extending to 7200V AC/1760V DC .

• Measurement Range: 1kΩ–10MΩ, with adjustable response thresholds for early warnings .

• Accuracy: ±1kΩ (1kΩ–10kΩ) / ±10% (10kΩ–10MΩ) .

✅ Smart Alarms & Diagnostics

• Dual Alarm Relays: Two SPDT contacts for fault signaling (configurable as NO/NC) .

• Self-Test & History: Automatic self-checks and event logging .

• Real-Time Display: Two-line LCD showing insulation resistance and system status .

✅ Robust Industrial Design

• Operating Temp: -10°C to +50°C (standard) or -40°C to +70°C (extended models) .

• Isolation: 2500V between circuits for noise immunity .

✅ Communication & Integration

• RS485/Modbus support for SCADA or BMS integration .

• Analog Output: 0–400µA or 4–20mA for external instrumentation .

✅ Flexible Installation

• DIN Rail or Panel Mounting for easy deployment in switchgear .

• Hot-Swappable for maintenance without downtime .

Technical Specifications

The structure and details of the product：

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