GE+ ACDC Installation and operation manual v11
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5.3.7. Power amplifier
Power amplifier is optional and it has an additional cost.
The GE converter can work as a voltage amplifier from the analogue inputs. It means that the
waveform in the analogue input will appear in the output of the converter. For instance, if the
analogue input is a square waveform, the output of the GE will be a square voltage waveform.
The equivalences of the ranges are shown in the following table:
catalogue
Please note that the converter can only place in the output the values within the
accepted working range.
5.4. Connection modes
As it has been previously mentioned, for the GE there are two possible connection modes:
- Independent phases: Three phase power grid. Each phase (U,V,W) is controlled
independently. The voltage setpoint can be different in angle and magnitude for each
of the three phases.
- Parallel phases: One phase power grid. In this case, the user has one phase output. The
total amount of current consumed will be the sum of all three phases. Use only in
voltage and faults mode.
- Unipolar mode: The converter behaves as 3 independent and positive DC power supplies
(only in DC mode).
- Bipolar mode: The converter behaves as 2 independent DC power supplies. One is
positive and the other negative.
It must be remembered that the equipment has 3 output phases (U, V and W) which are
referenced to the neutral point of the system (N) in AC configuration and to the Negative point
of the DC link in DC configuration. Therefore, the EUT must be connected in one of the following
configurations: between one of the phases and the neutral point (phase-N), between two phases
(phase-phase) or between one phase and the negative in DC configuration. In this way, the
power supply could, for instance, be fed by three independent single-phase sources at the same
time with different voltages, currents, etc.
Please be sure that no electrical connection between the phases exists. Keep in
mind that, if two phases are actually interconnected, a shortcircuit may appear in
voltage based modes.
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