Product Description

Bender ISOEV425 Insulation monitoring device

The Bender isoEV425 is a specialized insulation monitoring device (IMD) engineered for AC electric vehicle charging stations (EVSE) operating in mode 3. It provides continuous monitoring of the insulation resistance between the electric vehicle’s high-voltage system (unearthed IT system) and the protective earth (PE) conductor. Designed in strict accordance with the IEC 61851-23 standard, the isoEV425 ensures maximum electrical safety during the charging process. It reliably detects both symmetrical and asymmetrical insulation faults, signaling any hazardous conditions to the charging controller via a PWM output signal. Its compact design and robust construction make it an ideal solution for integration into modern EV charging infrastructure, safeguarding users and equipment from electrical hazards.

Technical Specifications:

  • Nominal System Voltage (U_n): AC 0…400 V, 50…60 Hz

  • Application Standard: IEC 61851-23 for AC electric vehicle charging systems

  • Response Value R_an: Adjustable from 100 kΩ to 1 MΩ (Factory setting: 240 kΩ)

  • Output Signal: PWM (Pulse Width Modulation) for R_iso value and status

Bender ISOEV425 Insulation monitoring device Description

Bender ISOEV425 Insulation monitoring device

Bender isoEV425 insulation monitoring device for AC EV charging stations (Mode 3). Ensures electrical safety in compliance with IEC 61851-23 by continuously monitoring insulation resistance.