Bender IRDH275-435 Insulation Monitoring Device

Description

Bender IRDH275-435 Insulation Monitoring Device

Product Dimensions：

The Bender IRDH275-435 is a sophisticated A-ISOMETER® insulation monitoring device. It is specifically designed to monitor the insulation resistance of ungrounded (IT) systems, including single-phase AC, three-phase AC, and DC systems.

The “-435” variant is characterized by its wide-range universal supply voltage, making it highly adaptable to various global power standards.

Technical Specifications

Key Product Advantages

• AMPPlus Technology: This patented measurement method allows for precise monitoring even in modern systems with high leakage capacitances or systems containing rectifiers, converters, and thyristor-controlled drives.

• Automatic Adaptation: The device automatically adjusts its measuring profile to the electrical system’s conditions, optimizing measuring time and accuracy.

• Comprehensive Monitoring: It monitors the insulation of both energized and de-energized systems (due to the separate supply voltage).

• Double Alarm System: Features two independently adjustable response values, allowing for a “Pre-warning” and a “Main Alarm” to prevent total system shutdown.

• Self-Monitoring: Continuously checks its own internal connections and functionality, providing a “System Fault” alarm if the device itself fails.

Important Considerations (Precautions)

• One Device Rule: In a single ungrounded system, only one insulation monitoring device may be active at a time to prevent measurement interference.

• Voltage Coupling: If the system voltage exceeds 793 VAC or 650 VDC, you must use an external coupling device (e.g., AGH series) to protect the IRDH275.

• Wiring Integrity: Ensure the connection to the system ground (PE) and the system conductors is low-resistance and secure; loose connections will lead to false “High Resistance” readings or device errors.

Product Applications

The IRDH275-435 is ideal for critical infrastructure where power continuity is mandatory:

• Marine & Offshore: Shipboard power systems and drilling platforms.

• Industrial Automation: Systems with variable speed drives (VFDs) and complex power converters.

• Renewable Energy: Large-scale solar (PV) and battery storage systems.

• Medical Facilities: Group 2 medical locations (operating theaters) where ungrounded power is used for life support.

• Railway Systems: Signaling and power supply for transit infrastructure.

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

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