BENDER IR425-D4M1C-2 Insulation monitoring device

BENDER IR425-D4M1C-2 Overview

The BENDER IR425-D4M1C-2 is an insulation monitoring device (Isometer®) for monitoring the insulation resistance of unearthed (IT) AC and DC systems. It is designed for the early detection of insulation faults, thereby increasing the safety, reliability, and availability of electrical systems.

Product Detailed Description

• Function:

• Continuous monitoring of the insulation resistance in unearthed (IT) systems.

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

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

• Employs the AMP measuring principle to ensure reliable measurement even in the presence of high system leakage capacitances.

• Features two separate, adjustable alarm thresholds.

• Integrated self-test function for regular checking of the device's functionality.

• Offers various interfaces and communication options for easy integration into monitoring systems.

• Features:

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

• AMP measuring principle.

• Two separate alarm thresholds.

• Adjustable response delay.

• Self-test function.

• Selectable fault location current.

• RS-485 interface, supports Modbus RTU.

• Configurable output relays.

• Multilingual menu.

• Parameter setting and status indication via display.

Product Parameters

• System Type:

• Unearthed (IT) AC, DC, and mixed systems.

• Rated Voltage Un:

• AC/DC 0...690 V

• Response Range:

• 1 kΩ ... 10 MΩ

• Alarm Threshold 1 (Ra1):

• Adjustable, 1 kΩ ... 1 MΩ

• Alarm Threshold 2 (Ra2):

• Adjustable, 1 kΩ ... 1 MΩ

• Alarm Relays:

• 2 changeover contacts, AC 250 V / 3 A, DC 30 V / 3 A

• Measuring Principle:

• AMP (pulsating measuring voltage)

• System Leakage Capacitance Ce:

• ≤ 50 μF (expandable)

• Supply Voltage Us:

• AC/DC 24...230 V

• Power Consumption:

• ≤ 3 VA

• Interface:

• RS-485, Modbus RTU

• Degree of Protection:

• IP30 (terminals IP20)

• Mounting:

• DIN rail mounting

• Ambient Temperature:

• -20 °C ... +60 °C

• Dimensions (H x W x D):

• 96 x 96 x 117 mm

• Weight:

• Approx. 0.4 kg

• Approvals:

• CE, UL (pending)

Product Advantages

• Early Fault Detection:

• Continuously monitors insulation resistance, providing timely alarms before critical failures occur.

• Increased Safety:

• Reduces the risk of electrical accidents, protecting personnel and equipment.

• Improved Reliability and Availability:

• Minimizes system downtime through early detection and preventative maintenance.

• Suitable for Various Systems:

• Can be used in AC, DC, and mixed IT systems.

• High Interference Immunity:

• The AMP measuring principle provides reliable measurements even with high system leakage capacitances.

• Flexible Alarm Settings:

• Two independent alarm thresholds can be set according to specific requirements.

• Easy Integration:

• RS-485 interface and Modbus RTU support facilitate easy integration into monitoring systems.

• User-Friendly:

• Clear status indication and simple parameter settings via the display.

Precautions

• Correct Installation:

• Follow BENDER's installation guidelines to ensure proper wiring and mounting of the device.

• Parameter Setting:

• Set the alarm thresholds and response delays correctly according to the specific characteristics and requirements of the monitored system.

• System Leakage Capacitance:

• Ensure that the leakage capacitance of the monitored system is within the device's permissible range. If the limit is exceeded, additional measures or the use of other insulation monitoring devices may be necessary.

• Regular Testing:

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

• Maintenance:

• Perform regular maintenance according to BENDER's recommendations.

Product Applications

• Industrial Control Systems:

• Monitoring the insulation status of critical control circuits.

• Medical IT Systems:

• Complies with medical electrical safety standards for monitoring IT systems in medical locations.

• Uninterruptible Power Supply (UPS) Systems:

• Monitoring the insulation resistance on the output side of UPS systems.

• Mobile Power Systems:

• E.g., ships, railway vehicles, etc.

• Photovoltaic Systems:

• Monitoring insulation faults in photovoltaic arrays.

• Special Power Supply Systems:

• E.g., laboratories, test equipment, etc.

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

Related products:

E-mail: alex@fenoux.com

Tel.: +86 13338369201

Skype: +86  13338369201

WhatsApp: +86  13338369201