
ISOMETER® IR425-D4
Insulation monitoring device for 0…300 V AC/DC IT control circuits containing DC components.
The generator’s insulation condition and the installation’s auxiliary and control supplies create different monitoring duties. Bender’s power station brochure relates online and offline measurement in rotating machines to their operating state.
Bender distributor in Türkiye · ADEO Teknik

In combined heat and power plants, the system type determines the monitoring function. Voltage and frequency requirements for feeding energy into the grid are assessed separately.
Start with models selected for the application’s measurement and monitoring duties; other products and accessories appear in the complete list below.

Insulation monitoring device for 0…300 V AC/DC IT control circuits containing DC components.

Type B device with LC display for monitoring AC, DC and pulsating DC residual currents in TN and TT systems.
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The generator’s insulation condition and the installation’s auxiliary and control supplies create different monitoring duties. Bender’s power station brochure relates online and offline measurement in rotating machines to their operating state.
Related brochure section · PDF p. 9 ↗
Auxiliary control circuit monitoring, residual current monitoring and grid connection monitoring are separate product functions in CHP plants.
After choosing a product family for the application, compare the model’s measurement scope, accessory compatibility and communication options on its detail page.
Explore related Bender models ↓The explanation, Bender’s relevant sector publication and official application page form the basis of this content. The image is presented in its original form from the source brochure.

Official Bender manufacturer publication
Open brochure PDF ↗Download PDF ↓Bender source document ↗
Original publication: Bender Industry Applications
Bender manufacturer publication · US / North American edition
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Original publication: Hydrogen
Sector publication from Bender’s official download centre
Open brochure PDF ↗Download PDF ↓Bender source document ↗
Original publication: Pumped storage hydro power station
Sector publication from Bender’s official download centre
Open brochure PDF ↗Download PDF ↓Bender source document ↗
Original publication: Insulation monitoring in earthed wind powered energy plants with the isoNAV685-D-B
Sector publication from Bender’s official download centre
Open brochure PDF ↗Download PDF ↓Bender source document ↗Product families fulfil different measurement and notification duties. The model’s full scope and required components are identified in the relevant technical source.
BENDER PRODUCT FAMILYApplication-specific ISOMETER® insulation monitoring devices for IT systems.
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BENDER PRODUCT FAMILYSingle- and multichannel RCM / RCMS monitoring products for earthed circuits.
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BENDER PRODUCT FAMILYProducts for monitoring voltage, current, frequency, phase and loop resistance.
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Get product information for your application ↗Auxiliary control circuit monitoring, residual current monitoring and grid connection monitoring are separate product functions in CHP plants.

Insulation monitoring device for 0…300 V AC/DC IT control circuits containing DC components.

Type B device with LC display for monitoring AC, DC and pulsating DC residual currents in TN and TT systems.

Monitoring voltage/frequency and connection conditions during power export from generating plants to the grid.

Voltage, current, power and energy measurement; THD and harmonic indicators up to the 31st order.

Condition monitor with an integrated gateway for connecting Bender devices to Ethernet-TCP/IP networks.
Explore all options in the relevant family. Assess model selection alongside system topology, voltage, measurement requirements and accessory compatibility.
Insulation monitoring · IMDCompare 30 products / series in this family ↗
Residual current monitoringCompare 18 products / series in this family ↗
Measuring and monitoring relaysCompare 14 products / series in this family ↗
Power quality and energy meteringCompare 2 products / series in this family ↗
Communication and central monitoringCompare 8 products / series in this family ↗As Bender’s distributor in Türkiye, ADEO Teknik provides technical product information and quotation support for model and accessory selection, manufacturer documentation and product supply.
Manufacturer document · English
Manufacturer document · English
Manufacturer document · English
Images and application content: official Bender sources. The relevant documents identify the exact model, variant and operating conditions.
Explore product group introductions and original manufacturer brochures with ADEO Teknik, Bender’s distributor in Türkiye.
Insulation monitoring · IMDIn an IT system, live conductors are not directly connected to earth. Behaviour during the first insulation fault is assessed alongside the system configuration, leakage capacitances and protection arrangement.Read the product group guide ↗
Residual current monitoringDetecting sinusoidal AC, pulsating DC and smooth DC components requires different sensor and evaluator configurations. Choose A/F or B/B+ according to the application's current waveform.Read the product group guide ↗
Measuring and monitoring relaysVoltage and frequency, current and protective conductor loop monitoring are different tasks. Relay selection starts with the quantity to be monitored.Read the product group guide ↗
Power quality and energy meteringMain distribution, subdistribution and load levels are monitored according to the installation configuration. Multiple measuring points help assess the source of a change.Read the product group guide ↗
Communication and central monitoringInterfaces such as BMS, BCOM and Modbus are selected according to the product's supported architecture. Do not assume every device supports every protocol.Read the product group guide ↗Contact your distributor in Türkiye for product selection, technical documents and quotations.