Product Description
Bender IRDH275-427 Insulation testing device
The Bender ISOMETER® IRDH275-427 is a state-of-the-art insulation monitoring device designed for unearthed AC, AC/DC, and DC power systems (IT systems). It continuously monitors the insulation resistance of a system to ground, providing early warnings of insulation faults before they can lead to critical failures or safety hazards. Utilizing the patented AMPPlus measurement principle, this device is particularly well-suited for modern, complex systems that include frequency converters, DC drives, and high leakage capacitances. The IRDH275-427 features a high-resolution graphic LC display for easy visualization of measured values, device parameters, and system status, ensuring enhanced operational safety and system availability.
Technical Specifications:
- Nominal System Voltage (Un): AC/3(N)AC 0…793 V; DC 0…650 V
- Supply Voltage (US): AC 100…240 V (50…60 Hz); DC 100…240 V
- Response Value Range (R_an1/R_an2): 1 kΩ…10 MΩ
- Measurement Principle: AMPPlus (Adapted Measuring Pulse)
- Operating Temperature: -40 °C to +70 °C (-40 °F to +158 °F)
- Degree of Protection: IP30 (Housing), IP20 (Terminals)
- Standards Compliance: IEC 61557-8
Bender IRDH275-427 Insulation testing device
Bender IRDH275-427 ISOMETER® for continuous insulation monitoring in AC, AC/DC, and DC IT systems. Features AMPPlus technology for reliable fault detection in complex power supplies with converters and high leakage capacitances.
