Ohmic load units

Ohmic load units from REO for development laboratories

Ohmic load units are used if power supplies or other test objects such as switches, contacts or transformers must be loaded with an active load.

Ohmic load units find their usage in development laboratories and test facilities, test institutes, schools and universities.
REO load units are designed for continuous operation, possess a high level of long-term stability and are optimised for every current and every load duration. The resistance value and the measurement of power are laid out especially in accordance with the customer’s specifications.

  • REOLOAD 101

    REO Resistive load

    REOLOAD 101
    • Voltage: 250 V
    • Current: 0,5 - 20 A
    • Resistance values: 7,4 - 1056 Ω

    Applications: These load units are designed for continuous operation and are used for endurance testing of converters and switch mode power supplies for railway applications.



    • Conform to VDE 0100

    • Test voltage:3 kV

    • Protection: IP 20

    • Ambient temperature: 40 °C


     


    Features



    • 7 fixed resistor stages and a fine trimming stage

    • control by Ø 22 mm push-but­tons and switches

    • integral forced cooling and digital interface for external PLC con­trol with 24 V DC relay

    • Individual resistor stages can be switched in and out via contac­tors.

  • REOLOAD 102

    REO Resistive load

    REOLOAD 102
    • Voltage: 250 V
    • Power: 5-25 kW

    Applications: These load units are designed for continuous operation and are used for endurance testing of converters and switch mode power supplies for railway applications.



    • Conform to VDE 0100

    • Test voltage:3 kV

    • Protection: IP 20

    • Ambient temperature: 40 °C


     


    Features



    • 7 fixed resistor stages and a fine trimming stage

    • control by Ø 22 mm push-but­tons and switches

    • integral forced cooling and digital interface for external PLC con­trol with 24 V DC relay

    • Individual resistor stages can be switched in and out via contac­tors.

  • REOLOAD 300

    Water cooled load bank

    REOLOAD 300
    • Voltage: 3 x 230 V
    • Current: 3 x 5 A
    • Schutzart: IP 54

    If a cooling cycle already exists, a water-cooled resistive load bank is the alternative to normal or forced air-cooled ones. The water-cooling of the resistor elements allows a quite compact construction while.



    air-cooling needs sufficient space for air circulation (better space/performance relation).
    The cooling circuit of the load bank can be connected to the existing cooling cycle via standard
    connections (3“ connections).



    The AC/DC resistance groups are modular-type and separately connected to the cooling cycle. The single resistance stages can be mounted cascadably as needed. This enables the user to preset any arbitrary resistance or current value.
    Each module can be separately controlled.



    The modular construction of the load stages allows power combinations of 50 kVA to 1MVA with
    three-phase operation and 160 kW to 480 kW in DC design.



    An internal PLC logic with bus function can be ordered on request. This enables location independent installation of the load unit separate from the test field.

  • REOLOAD 310

    REO Three-phase resistive load

    REOLOAD 310
    • Voltage: 440 V
    • Current: 8 - 63 A

    Applications: This load unit is designed for the lower power range and is suitable for testing converters and switched mode power supplies in test establishments.



    • Conforms to EN 50049/EN 10204

    • Test voltage 3 kV

    • Protection IP 20 

    • Ambient temperature 40° C


    Features



    • resistive load with power contac­tors for 4 resistor groups with forced cooling

    • 96 x 48 mm digital instruments for voltage and currents of the individual phases and a three-phase indicator

    • integral choke to reduce harmo­nics

    • interface provided for external PLC control

    • transportable design and option of connection to internal termi­nals possible

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