Borri UPSaver 1000 kVa, Operating Manual, Page: 126 / 185

UPS user manual
OMH44150 REV. B 17
redundancy algorithm, which has been explained previously, therefore is is activated only if the
output load is such to allow to have at least one power module off to be used as "reserve".
3.3.2 VHE mode – Very High Efficiency (Line Interactive)
In the VHE mode the load is supplied by the mains via the static bypass switch; the inverter
operates as a active filter to stabilize the output voltage should the mains parameters be beyond
the availability and stability pre-defined limits, which are controlled by a dedicated algorithm (VI
– Voltage Independent). Such function can be enabled and is automatically managed by the
above mentioned algorithm on the basis of both the load and AC supply conditions.
In case of mains outage or anomaly occurring on the bypass line the load is transferred to
the inverter.
Picture 14 – VHE mode
3.3.3 ECO mode
Similarly to the VHE mode, the load is supplied by the mains in the ECO mode as well; it
differs from the VHE mode because the inverter is on, in stand-by. Therefore it doesn't make
any "conditioning" on the output voltage, which is therefore dependent on the variation of the AC
input parameters (VFD – Voltage Frequency Dependent).
In case of mains outage or anomaly occurring on the bypass line the load is transferred to
the inverter; the transfer occurs with a short interruption of maximum 10 ms.
Picture 15 – ECO mode