DC Electronic Load – 4700 Series

High-Current DC Electronic Load for DC-DC Converter, Power Conversion, Fuel Cells, Batteries, V2G Testing, & More!


  • 8 sizes – 1 to 36kW @ 120 or 600V
  • High-resolution waveform capture for analysis of dynamic transients
  • 18 built-in, precision voltage, current, power and timing measurements that eliminate additional dedicated measurement instruments
  • Isolated digital inputs and outputs for test fixture support
  • PC/LAN control using LabVIEW & IVI drivers
  • Optional touch-panel user interface


NHR’s programmable DC electronic loads are ideal for medium-to-high-power testing in all markets.

The DC electronic loads (4700/4760) can be used as part of an automatic test station or as a stand-alone, bench-top set-up. The DC Electronic Load (4700) is a relatively low-voltage (120V) with high-current capability. The high-voltage DC Electronic Load (4760) is a high-voltage electronic load (600V) for high power applications.

The High-Current DC Electronic Load (4700 Series) is used in a wide variety of applications that involve automated testing of power conversion device outputs to simulate real-world loading conditions. This DC Electronic Load is ideal for testing applications that require a full current at low voltages, fast-transient simulation capability and comprehensive measurements. Typical applications include the testing of power conversion/storage products such as DC converters, DC power supplies, fuel cells and batteries, and telecom rectifiers.

Advantages and Benefits


  • Field-proven reliability
  • Simplifies automated test stand development
    - Triggerable set & measurement
    - True short circuit mode & over voltage relay
    - Digital inputs & outputs
    - Built-in SW watchdog & safety limits
  • Software tools to shorten test development time
    - PC-based Softpanel GUI with scope display
    - Supplied LabVIEW & IVI-C/IVI-COM drivers
    - Optional: DC Load, emPower®, or Enerchron® test sequencer


  • Field upgradeable (6kW steps)
  • Built in features require fewer test devices
  • Safety limits protect UUT

Flexible and Easy Control

The DC electronic loads (4700) can be operated manually through the large touch-panel- enabled GUI or automatically through a remote controller and any number of standard test programming languages.

DC Load GUI 4700 - NH Research (NHR)
Fast Trasient Load Profile - NH Research (NHR)

Create Complex, Fast-Transient Load Profiles

NHR’s DC Electronic Loads (4700) are capable of creating a wide variety of complex dynamic load profiles. Types of profiles include micro-second pulses, multiple pulses of varying width, stepped responses, variable slew rates and even simulating an AC component on the DC waveform.

Modular and Scalable Power

The DC Electronic Loads (4700) are modular and scalable, meaning additional auxiliary modules can be added to create a larger load.

Constant Power Operating Envelope - NH Research (NHR)
Solar Panels - NH Research (NHR)

Testing Applications


  • ATE Testing: Radar Power Emulation, Aviation, Power Supply, Solar Panel
  • Power Devices: Chargers, Adapters, DC Supplies, LED Drivers, Telecom Rectifiers
  • Fuel Cell Test, Super Capacitor Test
  • Power Conversion
  • EV Subsystem Test: OBC, V2G, APM, DC/DC Converter
  • Ideal for Fast Transients, Ultra-low Voltage Loading (down to .01 VDC)

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Have a Question Regarding Our DC Electronic Loads?

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