Bender AGH420 High-Voltage Coupling Module

Description

Bender AGH420 High-Voltage Coupling Module

Product Dimensions：

The Bender AGH420 is a high-voltage coupling device designed to extend the voltage range of Bender ISOMETER® insulation monitoring devices. It acts as an interface between the monitoring device and the electrical system being monitored.

Product Detailed Description

In many industrial power systems, the operating voltage exceeds the direct input capacity of standard insulation monitors. The AGH420 is specifically engineered to “couple” an ISOMETER® (typically from the iso685 or IRDH series) to ungrounded (IT) systems with high nominal voltages. It reduces the system voltage to a level that the monitoring device can safely process while maintaining galvanic isolation.

Technical Parameters

Product Advantages

• High Voltage Capability: Safely extends insulation monitoring to 1000 V systems, protecting the monitoring hardware from high-voltage stress.
• Versatility: Compatible with both AC and DC IT systems, making it a flexible solution for diverse industrial grids.
• Passive Design: As a passive coupling device, it does not require its own separate power supply, simplifying installation and reducing points of failure.
• Enhanced Safety: Provides high dielectric strength (8 kV), ensuring that faults in the main power circuit do not propagate into the sensitive control or monitoring circuits.

Important Considerations (Precautions)

• Compatibility: The AGH420 must be matched with a compatible Bender ISOMETER®. Using it with a non-supported device may result in inaccurate readings or damage.
• Installation Location: It should be installed as close as possible to the connection point of the system being monitored to minimize the length of unmonitored high-voltage leads.
• Disconnection for Testing: During high-voltage insulation tests (Megger tests) of the main power system, the AGH420 must be disconnected to prevent damage to the device and the connected monitor.
• Terminal Tightness: Given the high voltages involved, ensure all terminal connections are torqued to the manufacturer’s specifications to prevent arcing.

Product Applications

The AGH420 is essential in large-scale IT (ungrounded) systems where continuous insulation monitoring is required:

• Renewable Energy: Monitoring the DC side of large solar PV arrays or wind turbine converters.
• Industrial Manufacturing: High-voltage motor drives and large industrial processing plants using 690 V or 1000 V grids.
• Marine & Offshore: Power distribution systems on ships and oil platforms where system availability is critical.
• Mining: Protecting high-voltage mobile equipment and underground power distribution networks.

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

Please make an inquiry for more models：