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Ground Fault Products for Ungrounded Systems

For Renewable Industries

  • Description
  • Features
  • Applications
  • Ordering Info
  • Downloads
  • Accessories
  • isoPV425

    Digital ground fault detector for ungrounded solar arrays up to 100 kW

    This device meets or exceeds the requirements of NEC 690.35 and CEC 64-018(1)(e) for ground fault detection on ungrounded solar arrays.

    Designed specifically for photovoltaic systems 100 kW and below, the isoPV425 ground fault detector provides early indication of ground faults before leakage current may even be present. The device detects both AC and DC ground faults by monitoring the system's insulation resistance. The isoPV425 and AGH420 can connect to systems up to 690 VAC / 1000 VDC.

    Insulation resistance values are displayed in real-time on the device's LCD display. Additional overvoltage and undervoltage detection are available, with voltage measurements from positive to ground and negative to ground when connected to DC. Two single pole contacts are available, which may be set to normally energized (failsafe) or normally deenergized (non-failsafe) mode. An RS-485 interface is available for connection to remote BENDER communication gateways. For advanced users, separately adjustable values for resistance and impedance are available as well.

    The isoPV425 may also be used for determining PV system isolation prior to startup on both grounded and ungrounded solar arrays, per the upcoming 2014 requirements of NEC 690.5(A)(1) and NEC 690.35(C)(1).

  • Key Features: isoPV425

    • Meets requirements of NEC 690.35 and CEC 64-018(1)(e) for ground fault detection on ungrounded solar arrays
    • Early indication of both AC and DC ground faults on the array side of the isolated system
    • Connects to DC arrays up to 1000 VDC
    • Designed specifically for photovoltaic systems
    • Two separately adjustable insulation resistance response values
    • Additionally provides readings of voltage to ground (+ to GND and - to GND)
    • Additional overvoltage and undervoltage alarms available
    • Works on systems with up to 500 μF
    • Digital display showing readings in real-time
    • Easy-to-use, onboard menu for managing settings
    • Automatic self-test
    • Analog output
    • Built-in test and reset buttons
    • Connections for external test and reset
    • Latching or non-latching operation, selectable
    • Two single pole contact outputs, normally energized or normally de-energized operation
    • Compatibility with BENDER's remote communication system
  • Applications: isoPV425

    • Isolated (ungrounded) solar arrays 100 kW or less
    • AC systems, single- and three-phase
    • Pure DC and mixed AC/DC systems
    • Systems with high leakage capacitances
    • Multiple ungrounded systems connected via tiebreaker / interlock
  • Ordering information: isoPV425

    NameResponse ValueSupply VoltageOrdering Number
    isoPV425-D4 and AGH4201...500 kΩ AC 100...240 V (41...63 Hz) DC 24...240 V B91036303
  • Downloads: isoPV425

    Document Name Language Date Download
    Technical Bulletin / Datasheet
    isoPV425 and AGH420
    English 08.2013
    Download
    Menu Overview / Settings Checklist
    isoPV425 and AGH420
    English 08.2013
    Download
    User Manual
    isoPV425 and AGH420
    English 08.2013
    Download
    Brochure
    Ground Fault Protection in PV Systems
    English 03.2014
    Download
  • Accessories: isoPV425

  • Description
  • Features
  • Applications
  • Ordering Info
  • Downloads
  • Accessories
  • isoPV

    Digital ground fault detector for ungrounded solar arrays

    This device meets or exceeds the requirements of NEC 690.35 and CEC 64-018(1)(e) for ground fault detection on ungrounded solar arrays, as well as the upcoming 2014 requirements for array isolation testing prior to startup.

    The isoPV detects ground faults in isolated (ungrounded) solar arrays up to 793 VAC / 1100 VDC. The iso-PV monitors for ground faults by measuring the system's insulation resistance, providing early indication of ground faults before leakage current may even be present. Both AC and DC ground faults can be detected, including on systems that have high leakage capacitances.

    Designed specifically for photovoltaic arrays, the iso-PV satisfies the ground detection requirements of NEC article 690.35 for ungrounded DC solar arrays. Included are two components, the ground detector and the high voltage coupler. Both are required for operation (the voltage coupler may be installed in a separate cabinet to keep high voltage connections separate). The iso-PV features a digital display which shows the array's insulation resistance in real-time. Two SPDT contacts are available.

    The isoPV may also be used for testing array isolation prior to startup on both grounded and ungrounded arrays, per the upcoming 2014 requirements of NEC 690.5(A)(1) and NEC 690.35(C)(1).

  • Key Features: isoPV

    • Meets requirements of NEC 690.35 and CEC 64-018(1)(e) for ground fault detection on ungrounded solar arrays
    • Early indication of both AC and DC ground faults on the array side of the isolated system
    • Connects to DC arrays up to 1100 VDC
    • Designed specifically for photovoltaic systems
    • Separate voltage coupler gives the flexibility of a separate high voltage cabinet
    • Two separately adjustable insulation resistance response values, 200 Ω...100 kΩ
    • Works on systems with up to 2000 μF
    • Digital display showing readings in real-time
    • Easy-to-use, onboard menu for managing settings
    • Automatic self-test
    • Analog output
    • Built-in test and reset buttons
    • Connections for external test and reset
    • Latching or non-latching operation, selectable
    • Two SPDT contact outputs, normally energized or normally de-energized operation
    • History memory storing up to 300 events
    • Compatibility with BENDER's remote communication system
  • Applications: isoPV

    • Isolated (ungrounded) solar arrays
    • AC systems, single- and three-phase
    • Pure DC and mixed AC/DC systems
    • Systems with high leakage capacitances
    • Multiple ungrounded systems connected via tiebreaker / interlock
  • Ordering information: isoPV

    NameResponse ValueSupply VoltageOrdering Number
    isoPV-335 and AGH-PV0.2...100 kΩ AC 88...264 V (42...460 Hz) DC 77...286 V B91065133W
    isoPV-327 and AGH-PV0.2...100 kΩ DC 19.2...72 V B91065132W
  • Downloads: isoPV

    Document Name Language Date Download
    Technical Bulletin / Datasheet
    isoPV
    English 07.2013
    Download
    Installation Bulletin
    isoPV
    English 10.2012
    Download
    User Manual
    isoPV
    English 06.2012
    Download
    Brochure
    Ground Fault Protection in PV Systems
    English 03.2014
    Download
  • Accessories: isoPV

  • Description
  • Features
  • Applications
  • Ordering Info
  • Downloads
  • Accessories
  • IR155 10 Series

    Ground fault detector for level 3 electric vehicle chargers (EVSE)

    The IR155 10 series detects ground faults in ungrounded DC electric vehicle chargers (level 3). The device monitors the system's insulation resistance between the charger and ground, for systems up to 800 VDC. The advanced measurement method monitors both the DC side as well as the AC motor side of the system, even through high system interference conditions caused by motor control processes. The devices are PCB-style with a very small footprint and light weight. Various connector options are available.

    Version IR155-3210 is a UL 2231 recognized component for electric vehicle charging stations, and utilizes an automotive rated connector.

  • Key Features: IR155 10 Series

    • Ground detector for ungrounded DC level 3 electric vehicle chargers up to 800 VDC
    • IR155-3210 UL2231 recognized component
    • Detects faults on both the DC side as well as the AC motor side
    • Fixed alarm value of 100 kΩ
    • Fixed response value between 100 kΩ and 200 kΩ customizable at factory
    • Fixed undervoltage value selectable up to 500 V customizable at factory
    • Automatic self-test
    • Go / No-Go output
    • Measurement output of the system's insulation resistance
    • PCB style device, very small footprint and lightweight
  • Applications: IR155 10 Series

    • Ungrounded DC systems
    • Level 3 electric vehicle chargers
  • Ordering information: IR155 10 Series

    NameResponse SpecConnector TypeOrdering Number
    IR155-3210100 kΩ alarm, 300 V undervoltageTyco MICRO MATE-N-LOCK automotive connectorB91068140V4
    IR155-3210Parameters customizable at factoryTyco MICRO MATE-N-LOCK automotive connectorB91068140CV4
    IR155-4210100 kΩ alarm, 300 V undervoltageSamtec / Molex connectorsB91068143
    IR155-4210Parameters customizable at factorySamtec / Molex connectorsB91068143C
  • Downloads: IR155 10 Series

    Document Name Language Date Download
    Technical Bulletin / Datasheet
    IR155 10 Series
    English 01.2013
    Download
    Brochure
    Overview of Products
    English 02.2014
    Download
  • Accessories: IR155 10 Series

  • Description
  • Features
  • Applications
  • Ordering Info
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  • Accessories
  • IR155 03-04 Series

    Ground fault detector for AC/DC electric vehicles (EV)

    The IR155 03/04 series detects ground faults in ungrounded drive systems in electric vehicles. The device monitors the system's insulation resistance between the charger and ground, for systems up to 1000 VDC. The advanced measurement method monitors both the DC side as well as the AC motor side of the system, even through high system interference conditions caused by motor control processes. The devices are PCB-style with a very small footprint and light weight. Various connector and drive output options are available.

  • Key Features: IR155 03-04 Series

    • Ground detector for ungrounded DC level 3 electric vehicle chargers up to 1000 VDC
    • Detects faults on both the DC side as well as the AC motor side
    • Fixed alarm value of 100 kΩ
    • Fixed response value between 100 kΩ and 1 MΩ customizable at factory
    • Fixed undervoltage value selectable up to 500 V customizable at factory
    • Automatic self-test
    • Go / No-Go output
    • Measurement output of the system's insulation resistance
    • PCB style device, very small footprint and lightweight
  • Applications: IR155 03-04 Series

    • Ungrounded DC systems
    • Integration into electric vehicle drive systems
  • Ordering information: IR155 03-04 Series

    NameResponse SpecOutput TypeConnector TypeOrdering Number
    IR155-3203100 kΩ alarm, 300 V undervoltageLow side driverTyco MICRO MATE-N-LOCK automotive connectorB91068138V4
    IR155-3203100 kΩ alarm, 300 V undervoltageLow side driverTyco MICRO MATE-N-LOCK automotive connectorB91068138CV4
    IR155-4203100 kΩ alarm, 300 V undervoltageLow side driverSamtec / Molex connectorsB91068141
    IR155-4203100 kΩ alarm, 300 V undervoltageLow side driverSamtec / Molex connectorsB91068141C
    IR155-3204100 kΩ alarm, undervoltage inactiveHigh side driverTyco MICRO MATE-N-LOCK automotive connectorB91068139V4
    IR155-3204Parameters customizable at factoryHigh side driverTyco MICRO MATE-N-LOCK automotive connectorB91068139CV4
    IR155-4204100 kΩ alarm, undervoltage inactiveHigh side driverSamtec / Molex connectorsB91068142
    IR155-4204Parameters customizable at factoryHigh side driverSamtec / Molex connectorsB91068142C
  • Downloads: IR155 03-04 Series

    Document Name Language Date Download
    Technical Bulletin / Datasheet
    IR155 03-04 Series
    English 01.2013
    Download
    Brochure
    Overview of Products
    English 02.2014
    Download
  • Accessories: IR155 03-04 Series