GE+ ACDC Installation and operation manual v11
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3.3. Isolation transformer
CINERGIA standard units are not galvanically isolated from the grid. Therefore, the output terminals
(including the negative rail and the neutral) are referenced electrically to the grid neutral. CINERGIA offers
an Isolation Transformer as an optional for those test setups that require galvanic isolation. The necessity
of an Isolation Transformer depends on the Equipment Under Test and the electrical installation of the
laboratory (TT, TN or IT system).
In case of DC models (B2C, EL-DC, DCPS, BE, or any AC&DC model in DC) the
customer MUST install an isolation transformer in case of DC equipment if the
EUT (Equipment Under Test) is NOT isolated to the GRID. If not, there is risk of
damage to the CINERGIA unit or the EUT.
In case of DC models (B2C, EL-DC, DCPS, BE, or any AC&DC model in DC) CINERGIA
recommends installing an isolation transformer even if the EUT is galvanically
isolated from the GRID.
Please, ask to CINERGIA if your equipment has DC mode and does not integrate
an isolation transformer.
Note that the internal or external transformer is an optional.
When an Insulation Transformer is used the output terminals of the unit form an
IT system. Please follow the local electrical safety regulations concerning IT
systems and install an Insulation Monitor Relay when required
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