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User Manual for HYD 3-6 kw ES Hybrid Inverter - Rev. 1.1 del 13/06/2019
Identificazione: MD-AL-GI-00
Rev. 4.0 del 31.01.18 - Applicazione: GID
Figure 15 – Connecting the grid and critical loads
4.5.
Critical Load connection (EPS function)
Critical Load: in the event of a power failure (or operation in Off-Grid mode), if the EPS function is enabled, the
HYD-ES inverter will work in Emergency Power Supply (EPS) mode, using the energy stored in the battery to
supply energy to critical loads via the LOAD connection port.
The LOAD connection port is only for connecting critical loads. The power of critical loads must not exceed
3000VA.
The procedure for connecting the LOAD port is the same as for connecting the grid (Fig. 15).
A change-over switch must be inserted between the EPS output of the inverter and the critical loads, as shown
in figure 16.
Change-over positions
A change-over switch is required.
When checking/repairing critical loads, make sure that the change-over switch is in
the 0 position.
When checking/repairing the HYD-ES inverter, make sure that the change-over
switch is in the 0 position, and that the HYD-ES inverter is disconnected from the
mains power.
Caution
Under normal conditions, the change-over switch is in position 1. The HYD-ES inverter can supply
power to critical loads in the event of a power failure.
