BENDER IRSH375-435 Insulation monitoring device

Bender IRSH375-435 Overview

The Bender IRSH375-435 is an insulation monitoring device (IMD) for monitoring the insulation resistance of unearthed AC and DC systems. It complies with relevant standards and is designed for the early detection of insulation faults, thereby increasing the safety, reliability, and availability of electrical systems.

Product Detailed Description

• Function:

• Monitors the insulation resistance of unearthed (IT) AC and DC systems.

• Issues an alarm signal when the insulation resistance falls below the preset alarm thresholds.

• Configurable alarm thresholds and response delays.

• Features a self-test function to periodically check its own functionality.

• Provides a Modbus RTU communication interface for easy integration into monitoring systems.

• Optional fault location functionality (requires additional Bender devices).

• Features:

• Suitable for AC, DC, and mixed AC/DC systems.

• Wide voltage application range.

• Reliable measuring principle.

• Easy to install and commission.

• LED indicators for displaying device status and alarm information.

• Parameter setting via software or buttons on the device.

Product Parameters

• System Voltage (Un):

• AC/DC 0 ... 300 V (configurable)

• AC/DC 0 ... 690 V (configurable)

• Measuring Range (Ri):

• 5 kΩ ... 10 MΩ

• Alarm Thresholds (Ra1, Ra2):

• Independently configurable within the range of 1 kΩ ... 1 MΩ

• Response Delay (tv1, tv2):

• Independently configurable within the range of 0 s ... 150 s

• Measuring Frequency:

• DC, AC 16 ⅔ Hz ... 400 Hz

• Supply Voltage (Us):

• AC/DC 24 V ... 230 V

• Power Consumption:

• ≤ 3 VA

• Interface:

• Modbus RTU (RS485)

• Outputs:

• AC 250 V / 3 A / 750 VA

• DC 30 V / 3 A / 90 W

• 2 configurable relay outputs (CO)

• Degree of Protection:

• IP20

• Mounting:

• DIN rail mounting

• Ambient Temperature:

• -25 °C ... +55 °C

• Standards Compliance:

• IEC 61557-8

Product Advantages

• Early Fault Detection:

• Timely detection of decreasing insulation resistance, preventing unexpected downtime and safety hazards.

• Increased System Availability:

• Reduces unplanned downtime through preventive maintenance.

• Enhanced Safety:

• Lowers the risk of electric shock, protecting personnel and equipment.

• Modbus Communication:

• Easy integration into automation and monitoring systems.

• Flexible Configuration:

• Alarm thresholds and response delays can be set according to specific application requirements.

• Wide Voltage Application Range:

• Suitable for a variety of AC and DC system voltages.

Precautions

• Correct Selection:

• Choose the appropriate model based on the system's voltage range and specific requirements.

• Correct Installation:

• Follow Bender's installation instructions, ensuring proper connection and grounding of the device.

• Parameter Setting:

• Configure the alarm thresholds and response delays correctly according to system requirements.

• Regular Testing:

• Perform functional tests regularly to ensure the insulation monitoring device is working properly.

• Environmental Conditions:

• Ensure the installation environment meets the device's operating temperature and humidity requirements.

• Avoid Interference:

• Avoid strong electromagnetic interference to ensure the accuracy of measurements.

Product Applications

• Industrial Control Systems:

• Monitoring the insulation status of control circuits and power supplies.

• Medical Equipment:

• Ensuring the safety of medical IT systems.

• Uninterruptible Power Supply (UPS) Systems:

• Monitoring the insulation resistance of UPS outputs.

• Photovoltaic Systems:

• Monitoring insulation faults on the DC and AC sides.

• Electric Vehicle Charging Stations:

• Monitoring the insulation status during charging processes.

• Marine Power Systems:

• Monitoring the insulation of marine IT networks.

• Railway Signaling Systems:

• Ensuring the reliable operation of signaling systems.

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

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