What it is

The EA-PSB 10000 is a programmable bidirectional DC power supply that works as both a source and a regenerative electronic load in a single instrument. In load mode it feeds absorbed energy back into the grid at up to over 96% efficiency rather than dissipating it as heat, and its autoranging output holds full power across a wide voltage and current window. The series spans three rack-mount builds — a single-phase 2U at 1.5 kW and 3.0 kW, a three-phase 3U at 5, 10, and 15 kW, and a three-phase 4U at 30 kW — that share the same control, protection, function-generator, and parallel-connection architecture.

• Two-quadrant operation: source and sink in one device
• 1.5 kW to 30 kW per unit across 2U, 3U, and 4U builds
• DC voltage ranges from 0–10 V up to 0–2000 V
• DC current ranges from 0–6 A up to 0–1000 A
• Regenerative energy recovery to the AC grid, efficiency up to over 96%
• Active power factor correction, typically 0.99
• Autoranging output with CV, CC, CP, and CR regulation and fast crossover
• 16-bit ADCs and DACs with selectable voltage regulation speed (Normal, Fast, Slow)
• Integrated function generator with predefined curves; battery, fuel cell, and PV simulation
• Automotive test procedures for LV123, LV124, and LV148
• Parallel operation of up to 64 units for systems to 1920 kW and 64000 A
• UL, C-UL (CSA), IEC, EN, and BS safety listings

What it is used for

Some of the use cases for the PSB 10000 across power-electronics test and development work include:

• Battery test for electromobility — cell, module, and pack tests, State-of-Health (SOH) determination for second-life classification, and End-of-Line (EOL) testing
• Battery simulation — emulating cells, modules, or packs, with the source acting as a protected supply for the component under test
• Fuel cell test — resistance, performance, and active-life testing of fuel cells, stacks, and systems in all electrical modes
• On-board charger (OBC) test — with adjustable voltage regulation speed (Normal, Fast, Slow) to avoid control-loop competition with the DUT
• Solar array simulation — PV inverter testing with simulation models to EN 50530 or Sandia, including irradiation, panel technology, and temperature, with static or dynamic MPPT
• Battery recycling — SOH assessment and full discharge of retired EV batteries, with total discharge maintained even at voltages under 2 V

Source, sink, and control

Bidirectional with energy recovery. The PSB 10000 operates in two quadrants, combining a power supply and an electronic load. In sink mode it is regenerative, returning absorbed energy to the local grid at up to over 96% efficiency. Because that energy is not converted to heat, the unit runs cooler and needs less cooling infrastructure than a dissipative load, reducing both energy and air-conditioning cost.

Autoranging output. The flexible output stage automatically offers a wide range of both voltage and current to maintain full power across a wide operating range, so one unit addresses many voltage-and-current combinations instead of being fixed to a single rectangular envelope. Active PFC and the wide input let the units run on the majority of global grids.

Digital regulation and programming. Regulation runs at 16-bit resolution on the ADCs and DACs, with CV, CC, CP, and CR modes and fast crossover, and a selectable voltage control speed (Normal, Fast, or Slow) to match the dynamics of the device under test. The units are driven over SCPI and ModBus with LabVIEW and IVI drivers, and controlled through EA-Power Control and EA-Battery Simulator software.

Function generator and simulation. Every model carries a function generator for sine, triangle, square, and trapezoid waveforms, plus ramp and arbitrary generators for freely programmable voltage and current progressions, with test sequences that can be saved and reloaded. A lookup table stores IU and UI reference lines, and adaptable tables support photovoltaic simulation to DIN EN 50530 and fuel-cell simulation. Predefined automotive test procedures cover LV123, LV124, and LV148.

Why engineers pick it

One instrument sources and sinks. Two-quadrant operation combines a supply and a regenerative load in one device, driving positive and negative current up to 0–1000 A, so a single tester runs a complete charge/discharge or source/sink cycle instead of a separate source and load.

Regeneration lowers the running cost of high-power test. Up to over 96% of the energy absorbed in load mode goes back to the grid instead of into heat, cutting energy consumption and the cooling load at the same time.

Built-in test intelligence. An integrated function generator, battery/fuel-cell/PV simulation, automotive procedures for LV123/LV124/LV148, and integrated battery test mode put much of the test system inside the instrument, reducing external instrumentation for battery, OBC, fuel-cell, and PV inverter work.

It scales without changing the measurement chain. The same series parallels from a single benchtop unit up to a 1920 kW, 64-unit system on the Master-Slave and Share-Bus, so a lab can grow a platform without changing control philosophy or drivers.

Configuring and scaling

The series resolves along three axes: build, model, and options.

• Build sets form factor, phase, and power per unit — a single-phase 2U at 1.5 kW and 3.0 kW, a three-phase 3U at 5, 10, and 15 kW, and a three-phase 4U at 30 kW.
• Model sets the voltage-and-current envelope, from 0–10 V up to 0–2000 V and 0–6 A up to 0–1000 A. Each model carries its own article number.
• Options cover water cooling in stainless steel (4U), separately available US208V models that deliver full rated power on a 208 V grid (3U), and the optional industrial interface fitted to the plug-and-play slot (CAN, CANopen, RS232, Profibus, EtherCAT, Profinet, Modbus, or Ethernet, one or two ports).

For higher power, units parallel on the Master-Slave and Share-Bus: up to 64 units combine into one system providing up to 1920 kW and 64000 A, behaving as a single unit with total power and current shown on the master and load shared equally across the group. Different power classes can be mixed provided the voltage class stays constant — for example, a 75 kW system from two 30 kW 4U units and one 15 kW 3U unit. In a 19-inch 42U cabinet, the 3U build reaches 180 kW and the 4U build reaches 240 kW in roughly 0.6 m² (6.5 sq ft) of floor space.

Configure your unit on this page and buy it directly. If you need something the configurator does not cover — a paralleled multi-unit or multi-cabinet system, the water-cooling build, US208V models, a specific industrial interface, or a full turnkey rack — contact W5 Engineering and we will scope it with you.