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
DC Load (High Voltage) - 4700 series

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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.

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.

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.

Fast Transient Load Profile - NH Research (NHR)

Figure 1 – Various Fast Transient Load Profiles

Constant Power Operating Envelope - NH Research (NHR)

Figure 2 – Constant Power Operating Envelopes


programmable dc electronic load model 4700

  • 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

4700 Series DC Electronic Load Specifications

Model # 4700-1-TP 4700-2-TP 4700-3-TP 4700-6-TP 4700-12-TP 4700-18-TP 4700-24-TP 4700-36-TP*
Power 1kW 2kW 3kW 6kW 12kW 18kW 24kW 36kW
Current 200A 400A 600A 1200A 2400A 3600A 4800A 7200A
Voltage 120V 120V 120V 120V 120V 120V 120V 120V
5 1/4 x 19 x 22″/
133 x 483 x 559mm
5 1/4 x 19 x 22″/
133 x 483 x 559mm
10 1/2 x 19 x 22″/
267 x 483 x 559mm
10 1/2 x 19 x 22″/
267 x 483 x 559mm
35 x 23 x 30″/
889 x 584 x 762mm
43 x 23 x 30″/
1092 x 584 x 762mm
57 x 23 x 30″/
1448 x 584 x 762mm
72 x 23 x 30″/
1829 x 584 x 762mm
Weight 40lbs/
* The above specifications show typical configurations. Contact NH Research, Inc. for higher power ratings.

More Info

programmable dc electronic load model 4700

Related Products

Application Testing

The Model 4700 DC Electronic Load is useful for testing the following applications & products:
DC-DC Converters, DC Power Supplies, Fuel Cells, Batteries, Telecom Rectifiers, & Vehicle to Grid (V2G) Testing