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  • iso685

    Digital ground fault detector for ungrounded AC/DC systems

    This device meets or exceeds the requirements of NEC 250.21(B) and CEC 10-106(2) for ground detectors in ungrounded AC systems, as well as the 2014 requirement of NEC 250.167(A) for ungrounded DC systems.

    The iso685 is the newest generation of ground fault monitoring for ungrounded AC/DC systems. Encompassing Bender's extensive expertise in ungrounded systems into one device, the iso685 works on virtually all types of systems, with simple installation and preset settings features.

    The iso685 connects to systems up to 690 VAC / 1000 VDC, and is compatible with systems with variable frequency drives (VFD / ASD). Optional voltage couplers extend this voltage range. During initial setup, the iso685 features predefined profiles that tailors the device's settings to your application. The onboard isoGraph feature allows for trending the system's insulation resistance over time - no software required.

    A variety of alarm outputs are available, including dry contacts, analog outputs, audible buzzer, and remote communication options.

  • Key Features: iso685

    • A single solution for monitoring for ground faults in virtually all types of ungrounded systems up to 690 VAC / 1000 VDC (voltage couplers extend this range)
    • Detects ground faults by monitoring the system's insulation resistance, with two separately adjustable alarm values (1 kΩ - 10 MΩ)
    • Works on pure AC, pure DC, and mixed AC/DC systems, including systems with variable frequency drives (VFDs)
    • Incorporates multiple measurement methods to ensure optimal measurement technique for system type
    • Digital display showing readings in real-time
    • Easy-to-use, onboard menu for managing settings
    • Predefined measurement profiles to simplify setup process by system type / application
    • Advanced trending of system isolation via onboard time-based graphing
    • A variety of alarm outputs, including 2 SPDT contacts, analog outputs, and advanced communication options
    • Automatic self-test
    • History memory storing up to 1000 events
    • Meets requirements for ground detectors in accordance with NEC 250.21(B) and CEC 10-106(2)
  • Applications: iso685

    • AC systems, single- and three-phase
    • Pure DC and mixed AC/DC systems
    • General distribution and control systems requiring fast ground fault location
    • UPS systems and battery systems
    • Systems with variable frequency drives (VFDs)
    • Systems with power conversion components, including rectifiers and inverters
    • Large industrial systems
  • Ordering information: iso685

    NamePanel Mount FaceplateFault LocationTiebreaker SupportOrdering Number
  • Downloads: iso685

    Document Name Language Date Download
    Technical Bulletin / Datasheet
    English 10.2016
    Installation Bulletin
    English 10.2014
    User Manual
    English 10.2014
    User Manual
    Modbus TCP Integration
    English 12.2016
    Overview of Products
    English 06.2017
  • Accessories: iso685

    Remote Communication Systems

    Ethernet and Modbus/TCP communication gateway for BENDER devices

    NameOrdering Number
    Voltage Couplers

    Voltage coupler for ungrounded DC systems up to 1760 V

    NameOrdering Number