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Power Sources

EPOS 300 - Electronic Power Sources

High-accuracy current and voltage sources are becoming increasingly important in many areas of electrical engineering and nowhere is this more evident than in the fields of measurement and test technology. Signal generation directly from the grid via transformers is no longer adequate for the purpose of either operating or testing many electronic components and devices.

EPOS 300 is the ideal solution whenever there is a need for absolutely precise signals with very low levels of harmonic distortion, freely selectable signal shapes and a high level of power.

System Description

The use of state-of-the-art technologies coupled with a high degree of system integration has made it possible to develop a portable device which is small, lightweight and extremely powerful.

The signal characteristics are computed by a high-performance signal processor and issued via high-accuracy D/A converters and electronic power amplifiers. The synthetic generation of the output quantities guarantees immunity to disturbances in the supply.

EPOS 300 features three voltage and three current signal sources. The amplitude, phase angle and frequency parameters can be varied widely during signal output. This means that EPOS 300 can also be used as a freely programmable three-phase function generator which is able to output any flicker signals or even records (from a disturbance recorder, for example) as transient signals.

Wide Range of Features

Two different models are available with maximum output currents of 25 A and 120 A. Both models feature an internal DC power supply which can be used to feed a test object, for example. In addition to the sources themselves, four binary inputs and three binary outputs are provided for control purposes. A GPS receiver module can also be integrated for time synchronization.

Easy to Operate

EPOS 300 is operated and controlled using just four function keys and a jog dial. These controls are located on the front panel together with an LCD screen. Great emphasis has been placed on the ergonomics of the display menu enabling the device to be operated simply and intuitively with the jog dial.

Additional Interfaces

A PC or laptop computer can be connected directly to EPOS 300 enabling the device to be operated and controlled with the powerful EPOS software.

The software also features a simple programming interface with a self-explanatory library for special requirements, e.g. for use with test stands developed by customers for their own use. This programming interface can be used in environments which support COM/ActiveX or in .NET environments.

Specifically for the purpose of testing meters, EPOS 300 is also equipped with an interface for connecting the METES 340 REF reference meter. This makes it possible to use the reference meter to exercise fully automatic control directly on the source.