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EA Elektro Automatik is a German manufacturer of programmable power supplies and electronic loads designed for efficiency testing, R&D, and industrial automation.
Programmable Bi-Directional DC Power Supply, Rackmount, 208-480, 200 VDC, 210 ADC, 15000W
DC Power Supply, 200 VDC, 210 ADC, 15000W
Wide range input, 208 V - 480 V +10 % 3ph AC
Active Power-Factor-Correction, typical 0.99
Bidirectional power supply, 2-quadrants in source and sink
In load operation, regenerative with energy recovery into the grid
Very high efficiency up to over 96 %
High performance of up to 15 kW per unit
Voltage from 0 - 10 V up to 0 - 2000 V
Currents from 0 - 20 A up to 0 - 510 A
Flexible power regulated DC input/output stages (autoranging)
Regulation mode CV, CC, CP, CR with fast crossover
Digital regulation, high resolution with 16bit ADCs and DACs, selection of control speed: Normal, Fast, Slow
Color 5“ TFT display with touch control and intuitive user interface
Galvanically isolated Share-Bus for parallel operation of all power classes in the 10000 series
Master-Slave bus for parallel operation of up to 64 units of all power classes in the 10000 series
Integrated function generator with predefined curves
Predifined automotive test procedures for LV123, LV124 and LV148
Integrated battery test mode, battery and fuel cell simulation
Photovoltaics test mode, MPPT, EN 50530
Command languages and drivers: SCPI and ModBus, LabVIEW, IVI
The bidirectional DC laboratory power supplies in the PSB 10000 series from EA Elektro-Automatik are two quadrant devices which can perform the function of a power supply as well as that of an electronic load. In load mode the device is regenerative and feeds the energy back into the local grid with an efficiency up to over 96%. The PSB 10000 series includes single and three phase units, which, together with the wide input range, allows use with practically all global mains voltages. The DC voltage and current are directed by the application and the spectrum ranges from 0 - 10 V to 0 - 2000 V and from 0 - 6 A up to 0 - 1000 A in a single device. The DC supply operates as a flexible output stage with a constant power characteristic (autoranging), and a wide voltage, current and power range. To achieve higher power and current all units are equipped with a master-slave bus. This enables up to 64 parallel connected devices to be combined into one system which can provide up to 1920 W and 64000 A. Such a system works as a single unit and can use different power classes, only the voltage class must remain constant. In this way a user can construct a 75 kW system from two 30 kW and one 15 kW devices from the PSB 10000 range. Furthermore, typical laboratory functionality is provided. This includes an extensive function generator, alarm and warning management, assorted interfaces and ports, software solutions and many more functions.
AC Connection
The bidirectional DC power supplies in the PSB 10000 series are equipped with an active PFC which provides a high efficiency at a low energy consumption. Furthermore, the devices in this series provide a wide input voltage range. This extends from 1-phase 110/120 V up to 240 V AC mains supply and 3-phase 208 V to 380 V, 400 V and 480 V AC mains supply. The devices can be operated in the majority of global mains supply. They adjust automatically, without additional configuration, to the available supply. In a 110/120 V and 208 V AC grid a derating of the output power is set.
Energy recovering
The energy consumed in load mode is fed back into the connected mains supply with an efficiency of over 96 %. This reduces cost: as the energy is not converted to heat as in other loads, the energy costs are reduced. In addition, the devices generate less heat requiring less cost intensive air conditioning. One device is sufficient for the whole application, reducing investment and installation costs.
The principle of Energy recovering
This demonstrates, based on an application, how a ‘device under test’ takes energy from the mains, converts it to DC and feeds that into an EA device. The bidirectional power supply PSB 10000 converts this energy back into an AC current and feeds it back into the mains.
DC Output
The output of the bidirectional power supply PSB 10000 with a DC voltage of 0 - 10 V up to 0 - 2000 V allows positive and negative currents of 0 - 6 A up to 0 - 1000 A as a two- quadrant device. The flexible output stages (autoranging) provide the user with a wide voltage, current and power range and hence a wider field of working than traditional power supplies.
DC Connection
Connection of the DC output is via a copper rail on the back side of the device. If a system with higher performance is required, the devices are simply connected in parallel. With minimal effort devices can be linked with the vertical copper rails. A cover for contact protection is provided.
The principle of autoranging
"Autoranging“ is a term when a bidirectional programmable DC Power Supply automatically offers a wide output and input range of both, voltage and current, to maintain full power across a wide operation range. This type of solution allows the use of a single unit to address multiple voltage and current combinations.
Function generator
All models in the PSB 10000 series are equipped with a function generator. This allows waveforms such as sine, triangle, square or trapeze to be simply called up and applied to either the voltage or the current. A ramp function and a arbitrary generator allow voltage and current progression to be freely programmable. Test sequences for repeated tests can be saved and reloaded when needed, which saves time. A LUT allows IU and UI reference lines to be stored. For simulation of a photovoltaic system or fuel cells, adaptable tables are provided. With the standard PV characteristic curve (DIN EN 50530) various solar cells and many other technology parameters can be selected and set. In short, the user is supported by a multitude of useful functions.
Interfaces
As standard EA devices are fitted with the most important digital and analogue interfaces and ports which are galvanically isolated. These include an analogue interface which can be parameterised for input and output, control and monitoring, of 0 - 5 V or 0 - 10 V for voltage, current, power and resistance, assorted inputs and outputs as well as USB and ethernet ports. The following options which use a Plug & Play slot, complete the portfolio:
Build-in Interfaces
USB, Ethernet, Analog, USB Host, Master-Slave-Bus, Share-Bus
Optional Interfaces
CAN, CANopen, RS232, Profibus, EtherCAT, Profinet (with one or two ports), Modbus (with one or two ports), Ethernet (with one or two ports)
Software
EA-Power Control, EA-Battery Simulator
High performance systems
High power applications can be covered with high power systems of up to 1920 kW. These are achieved by using the outputs of many PSB 10000 devices, changing the copper rails to vertical, and connecting in parallel. Thus, a 19” cabinet with 42 U can provide a system with 240 kW occupying 0.6 m² floorspace. The master/slave bus enables up to 8 cabinets with a maximum of 64 units of 30 kW each to behave as one unit.
Master-Slave-Bus and Share-Bus
If the integral master-slave bus and share bus are used, a multi device system behaves as a single device. The master-slave bus and the share bus are simply connected to each device. With the master-slave bus the system data such as total power and total current are collected and shown in the master device. Warnings and alarms of the slave devices are shown clearly in the display. The share bus provides an equal load distribution to the individual devices.
In The Box
1 x Bidirectional power supply device
2 x Remote sensing plugs
1 x 1.8 m (5.9 ft) USB cable
1 x Set of DC terminal covers
1 x Sense terminal cover
1 x USB stick with documentation and software
1 x AC connector plug (clamp type)
1 x Set for AC cable strain relief
