Elektro-Automatik EA-PS 10750-60 3U – Lab Power Supply (750 V / 60 A / 15,000 W)

• Voltage: 0 – 750 V
• Current: 0 – 60 A
• Power: 0 – 15000 W
• Wide range input, 208 V – 480 V +10 % 3ph AC
• Flexible power-regulated DC output stages (autoranging)

The DC laboratory power supplies in the PS 10000 series from EA Elektro-Automatik convert the energy from the grid into a regulated DC voltage with an efficiency of over 96%. The PS 10000 series includes single and three-phase units, which, together with the wide input range, allow use with practically all global mains voltages. The DC voltage and current are directed by the application, and the spectrum ranges from 0 – 60 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 device from the PS 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.

The DC power supplies in the PS 10000 series are equipped with an active PFC, which provides high efficiency at 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 the 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.

The output of the power supply PS 10000 with a DC voltage of 0 – 60 V up to 0 – 2000 V allows currents of 0 – 6 A up to 0 – 1000 A. 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.

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 vertical copper rails. A cover for contact protection is provided.

“Autoranging“ is a term when a programmable DC Power Supply automatically offers a wide output 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.

As standard EA devices are fitted with the most important digital and analog interfaces and ports, which are galvanically isolated. These include an analog interface which can be parameterized 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.

High-power applications can be covered with high-power systems of up to 1920 kW. These are achieved by using the outputs of many PS 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 a 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.

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 shared 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 on display. The shared bus provides an equal load distribution to the individual devices.

Relay manufacturers must carry out assorted tests on their products during production. For these, the coils and contacts are provided with exactly defined voltage and current. For the coil tests, important parameters such as operating, holding, and decay current, together with the associated voltages, must be checked and documented. For the contacts, not only are the current carrying capability, and contact resistance important parameters, but also voltage consistency and disconnect threshold indicate much about the product quality. Testing all these is best supported by an automatic test system. A part of such a system can be the devices of the PS 10000 series with their exact, dynamic controls of voltage, current, power, and resistance, providing optimal values for the best test results. With their diverse interface connections, they can be integrated into any test system and deliver the necessary data without the need for additional measuring equipment.

In an on-board charger test (OBC), the electrical features must be tested under various conditions. This requires a flexible test system that also provides test data. With the sequencing and logging functions of the PS 10000 devices, test procedures allow data to be exported and saved. In this way, applications can promptly generate reproducible test results based on dynamic and highly accurate set point and measurement data. To avoid competition between two separate control loops of the device under test (DUT) and the test device, the control frequency of the power supply is adjustable. The modes Normal, Fast and Slow allow the PS 10000 devices to match the control characteristics of the on-board charger.