IRDH275-435 Bender Insulation Monitoring Device

Description

IRDH275-435 Bender Insulation Monitoring Device

Product Dimensions：

Product Description (Detailed Explanation)

The IRDH275-435 utilizes the patented AMPPlus measuring principle, which allows it to monitor modern power supply systems that include power electronics, such as rectifiers, converters, and variable frequency drives (VFDs). Unlike traditional monitors, it can detect insulation faults even in systems with high leakage capacitances by automatically adapting its measuring pulse to the system conditions.

The “-435” version specifically identifies its wide-range auxiliary supply voltage, making it suitable for global use in various industrial power grids. It monitors the resistance between the system conductors and the earth; when this value drops below a pre-set threshold, the device triggers an alarm via its internal relays and LEDs.

Product Parameters (Technical Specifications)

Product Advantages (Key Benefits)

• Universal Application: Works seamlessly in AC, DC, and mixed systems, including those with heavy interference from VFDs and rectifiers.

• Early Fault Detection: Identifies insulation degradation long before it leads to a short circuit or a system-wide failure, allowing for predictive maintenance.

• Automatic Adaptation: No manual tuning is required for system capacitance; the device intelligently adjusts its measuring cycle to ensure accuracy.

• Redundant Alarms: Features two independent alarm thresholds (e.g., one for “Pre-warning” and one for “Main Alarm”).

• Self-Monitoring: Continuously checks its own internal circuitry and the connection to the system/earth, ensuring the monitor itself hasn’t failed.

Precautions (Important Notes)

• IT Systems Only: This device is strictly for ungrounded (IT) systems. Do not use it in solidly grounded (TN/TT) systems, as it will signal a permanent fault.

• One Monitor Rule: In interconnected systems, only one active insulation monitor should be connected at a time. Multiple active monitors will interfere with each other’s measuring pulses.

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

• Wiring Integrity: Ensure the “KE” (earth connection) and “E” (functional earth) terminals are wired correctly to provide a reliable reference point for measurement.

Product Applications (Typical Use Cases)

• Industrial Production: Protecting continuous processes in chemical, paper, and glass plants where a single ground fault shouldn’t trigger a shutdown.

• Renewable Energy: Monitoring the insulation of DC strings in large-scale photovoltaic (Solar) arrays and battery storage systems.

• Marine & Offshore: Ensuring electrical safety on ships and oil rigs where ungrounded systems are standard to maintain propulsion and life support.

• Medical Facilities: Used in “Group 2” medical locations (operating rooms) to ensure power continuity during surgery.

• Railway Infrastructure: Monitoring signaling and power supply systems for rolling stock and trackside equipment.

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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