Keysight EL4925A 4kW Regenerative DC Electronic Load

The Keysight EL4925A is a compact 1U midrange regenerative electronic load offering a single input with a range of 0 to 500V, 0 to 24A, and up to 4kW. Its regenerative design efficiently returns absorbed energy to the grid, reducing both energy costs and cooling requirements. Engineered for R&D, design validation, and production environments, the EL4925A features built-in voltage and current measurements, multiple I/O interfaces, and system-ready capabilities that accelerate test development. With its reliable performance, space-saving form factor, and low cost of ownership, the EL4925A helps optimize high-power testing by minimizing heat dissipation and maximizing uptime.

Features and Specifications

• Range 0 to 500V, 0 to 24A, 0 to 4kW
• Single-input, programmable load
• AC input range and frequency of 200 to 520 VAC, 50 / 60 Hz
• Accelerate battery testing with a built-in waveform generation function
• Built-in voltage and current measurement capabilities
• 3-inch LCD display
• Standard with Ethernet / LAN, USB 2.0, CAN I/O interfaces
  (optional GPIB, analog, RS-232 I/O)
• Built-in web interface (remote control)
• Compliant with 1.5 LXI Device Specification 2016
• Maximize rack efficiency with industry-leading compact 1U design
• Optional PathWave BenchVue software supports power analysis and battery emulator/profiler

*Note: Rack mount ears are not included.

Reduce Costs for Cooling and Electricity

The EL4925A regenerative electronic load returns up to 95% of absorbed energy back to the grid efficiently, helping lower energy and cooling costs without disrupting grid stability. It automatically redirects excess power during current sinking, requiring no programming. To protect your Device Under Test (DUT), the EL4925A safely synchronizes with the grid by detecting live status, phase voltage, and frequency in real time before initiating power regeneration.

Generate Voltage and Current Transients

To ensure your DUT stands up to these real-world transients, you must simulate worst-case power transient conditions during testing. The EL4925A provides three functionalities for simulating either voltage or current transients for testing: Step, Constant dwell arbitrary waveforms and List.

Multiple Operating Modes

The EL4925A provides voltage priority mode (CV), current priority mode (CC), resistance priority mode (CR), and power priority mode (CP). Additionally, four other complex modes are also available.

Add Power Flexibility to Your Test System

Paralleling electronic loads enhances power flexibility in test systems, but conventional loads often struggle to maintain consistent Constant Voltage (CV) or Constant Current (CC) modes when paralleled, leading to performance issues like poor transient response. The EL4900 Series solves this with built-in paralleling that ensures balanced current sharing and consistent mode operation, supports primary/secondary configuration for unified control of up to 192 kW, and allows up to 16 units to be paralleled—provided models have matching voltage ratings and firmware versions. Parallel connection of mixed models with identical voltage rating is only applicable for 6kW and 12kW models

Optional rack mounts available: RP5904C (1U) and RP5905C (2U).

The EL4900 Series Regenerative Solution

The Keysight EL4900 Series consists of midrange regenerative DC electronic loads designed to return absorbed energy back to the power grid efficiently. This regeneration helps lower both energy usage and cooling expenses. Offered in space-saving 1U and 2U form factors, the EL4900 Series minimizes energy costs, conserves floor space, and simplifies system integration. It combines reliable performance with versatile features in a compact, all-in-one regenerative load solution.

Power Without Compromise

Keysight is introducing three new high-power ATE system power supply series, an electronic load, and a comprehensive power test software suite—designed to deliver exceptional power density without sacrificing performance or programmability.

• DP5700 DC Power Supply
• RP5900 DC Regenerative Power Supply
• EL4900 DC Regenerative Electronic Load

Key Facts

1. ) 1.5kW/3.4 kW high-density power. Also in compact half-rack size.
2. ) Pair with Keysight's comprehensive software suite to run faster, deeper power tests - saving time and improving test coverage.
3. ) 2 to 12 kW high-density regenerative power and electronic loads.
4. ) Removeable SD memory ensures data stays classified.

Control and Analyze Data

The optional PW9252A PathWave application provides quick, programming-free access to the sinking and measurement features of EL4900 Series regenerative loads. It supports flexible licensing for multiple instrument connections and can control EL4900 models and other Keysight power supplies via LAN, GPIB, or USB.

What's in the Box

• EL4925A 4kW Regenerative DC Electronic Load

*does not come with line cords or terminations, users will need to supply their own.