DC Electronic Loads

Conventional and regenerative loads

DC Power Supplies

Bidirectional Power

Industrial Series

DC Electronic Load

EA Programmable DC Electronic Loads

Available in conventional and regenerative, DC electronic loads from EA Elektro-Automatik boast high power density and premium features not found on typical loads. Offering input power ratings up to 15kW in 3U or 30kW in 4U chassis with max 2000 VDC. Easily parallel operation for almost 1.92MW of power. Regenerative ELRs reduce heat, noise and HVAC costs. All of EA’s DC power supplies and DC electronic loads feature true Autoranging which automatically offers increased current at lower voltages. EA’s loads come in desktop, tower-style or 19 “rack-mount.

The EL / R series features 5 “TFT touch panel display for intuitive control, setup and programming. The intelligent interface allows you to configure test routines and program the unit quickly without the need for extensive manual review.

DC electronic loads come standard with an arbitrary waveform function generator, swappable digital interface control and built-in test routines for battery test, photovoltaic simulation and MPP tracking, to name a few.

True Autoranging – Advantages for Test

All EA 19” rack mounted electronic loads provide true autoranging giving full power across a larger operating range. Autoranging enables the load to automatically adapt to higher output voltages when there is a smaller current or handle higher currents when there is a lower voltage. EA’s true autoranging can deliver full power down to 33% of rated output voltage.

  • Save budget and space
  • No oversizing supply
  • One supply tests more
  • Versatile for future tests

Regenerative Energy Recovery

The EA ELR load can sink (absorb) current and regenerate that current to the local power grid with up to 96% efficiency. This energy efficiency saves electrical costs and runs significantly cooler, making the ELR a very environmentally-friendly “green” solution on top of minimizing investment and test equipment space.

  • Save electricity + costs
  • Efficiency approx. 96%
  • Quick return on investment
  • Environmentally friendly

Built-in Function Generator

A common need for dc power supplies and loads is to deliver the output voltage or current with a pattern other than a straight-line dc signal. EA’s built-in digital function generator includes options for sine, triangle, rectangle, and trapezoid waveforms, as well as custom arbitrary wave forms.

Swappable Anybus Remote Control

EA “Anybus” modules are easily installed by the user and can be swapped out with just a few minutes and a screwdriver when different communication protocols are desired. For computer or remote control, you have many choices, such as Ethernet, USB, EtherCAT, ProfiNET, ProfiBUS, CAN, CANOpen, Modbus, Devicenet and RS232 interfaces.

Device Types and Series

19 Inch slide-in housing

(Series ELR / Power generation)

Technical Specifications

  • Nominal power: from 80W to 150kW and more
  • Nominal voltage: bis 0-16V to 0-15kV DC
  • Nominal current: 0-6A to 0-510A (Systems to 3500A)

Possible Features

  • Autoranging
  • Color Touchscreen
  • Primary clocked, with flexirange or auto-range output
  • Externally controlled via analog and digital interfaces
  • Permanently integrated interfaces and “plug n play” slot
  • State-of-the-art µ-processor control (FPGA)
  • Modular highly insulated architecture
  • PV (Solar) Array Simulation
  • Battery and fuel cell simulation
  • function generator sine, rectangle, trapezoid, ramp, arbitrary
  • Alarm Management, User Profiles
  • For tabletop, 19″ integration and wall mounting
  • Analog, Ethernet, USB, CAN, Profibus, GPIB and many more
  • Operator Software EA Power Control (Freeware), Multi-Control “App” (license required)
  • Ethernet / USB / Analog as standard / plug’n’play-Slot for additional interfaces

19 Inch slide-in housing

(Series EL / Dissipative)

Technical Specifications

  • Nominal power: from 300W to 43,2kW (Systems to 227kW and more)
  • Nominal voltage: 0-80VDC to 0-750VDC
  • Nominal current: 0-5A to 0-3060A (Systems to 3500A and more)

Possible Features

  • Autoranging
  • Color Touchscreen
  • Two-quadrant expansion
  • Externally controlled via analog and digital interfaces
  • Table-top and 19″ rack technology, turnkey system cabinets
  • Permanently integrated interfaces and “plug n play” slot for interface retrofitting
  • Modular highly insulated architecture, extremely reliable and filtered
  • Many interface options: Analog, Ethernet, USB, CAN, Profibus, GPIB and many more
  • User software EA Power Control (as freeware and payware)
  • Operating modes CV, CC, CP, CR, battery test, MPPT (PV) simulationFor operation on all types of batteries (Pb, NiCa, Li, etc.) as well as photovoltaic (PV) strings, ultracaps, fuel cells, EV motors, alternators and other direct current sources
  • Integrated function generator with predefined waveforms such as sine, rectangle, trapezoid, ramp, arbitrary
  • Air and water-cooled versions
  • Parallel switchable in Master-Slave mode

Space Saving Desktop / Tower Style Devices

(Series EL)

Technical Specifications

  • Nominal power: from 300W to 1200W
  • Nominal voltage: 0-80VDC to 0-750VDC
  • Nominal current: 0-5A to 0-60A

Possible Features

  • Microprocessor controlled
  • Color TFT Display
  • LabView VIs and control software
  • Multilingual user interface (DE, EN, CN, RU)
  • Extensive function generator
  • Control modes CV, CC, CP and CR
  • Application for photovoltaic, battery, fuel cell
  • Extensive protection functions (OVP, OCP, OT)
  • USB interface as standard
  • Ethernet & analog interface as standard (EL 9000 DT)
  • All interfaces galvanically isolated
  • Windows control software
  • LabVIEW VI User Library
  • SCPI & Modbus protocol
  • Desk-top housing in tower or desktop design
  • Compact design with high performance
  • Plug’n’play-Slot for USB, USB+LAN or USB+Analog

Cabinet System

Modules / Power / Series

  • Modular rack systems with 42U, 38U, 24U and 15U
  • Integrable devices in height units 3U, 4U and 6U
    • 300 kW in only one 42U rack with 5 units á 60 kW/6U
    • 3.84 MW in only 13 racks with up to 64 devices
  • Integrable series:
    • EA-10000
    • EA-10000 Industrial
    • EA-BT 20000 

Possible Features

EA bidirectional programmable DC power supplies with 19-inch racks can be combined in EA cabinet systems. Adaptation to numerous industrial requirements is possible.

Select devices and integrate into the rack

New high-performance systems are constantly being developed for the electrification of the world. Associated with this is the testing requirement for the battery packs, fuel cell stacks, solar systems or electrolysis systems (or: electrolysers). With the modular EA rack system you have the possibility to select the suitable devices for your tests and simulations and to integrate them into the modular EA rack system

Power supplies and loads

Configure 3U, 4U and 6U devices into 42U, 38U, 24U and 15U rack systems. Combine EA-10000 and EA-10000 Industrial series programmable power supplies, bidirectional power supplies, or regenerative loads. System performance can be increased by connecting devices in parallel. In a 42U rack with 5 units of 60 kW you can reach 300 kW, for the maximum power of 3.84 MW you can connect up to 64 units in 13 racks.

  • Application for battery, photovoltaics, electrolysis, fuel cell and many more
  • For 380 V, 400 V and 480 V AC
  • Programmable power supplies (PSI, PS, PU), Bidirectional Power supplies (PSB, PSBE, PUB) and regenerative loads (ELR, PUL).
  • Intuitive operation through the multilingual color TFT touch panel
  • Function generator
  • Extensive protective functions (OVP, OCP, OT, …)
  • USB, Ethernet and analog interface as standard
  • Plug & Play slot for digital interfaces
  • All interfaces galvanically isolated
  • Control software EA Power Control
  • Simulation software EA Battery Simulator
  • LabVIEW VI User Library
  • IVI driver package
  • DBC-Files
  • SCPI and ModBus protocol
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