User’s Manual 1PH HYD3000-HYD6000-ZP1
Rev. 1.0 01/09/2023
Identification: MD-AL-GI-00
Rev. 1.1 of 27/01/2023 - Application: GID
56/193
6.3.
Connecting a Critical Load (EPS function)
Critical Load (LOAD): in the event of a power failure (or operation in Off-Grid mode), if the EPS function is
enabled, the 1PH HYD3000-HYD6000-ZP1 inverter will work in Emergency Power Supply (EPS) mode, using
the energy stored in the battery to supply energy to the critical load via the LOAD connection port.
The LOAD connection port is only for connecting critical loads. The power of critical loads must not exceed
3000/3680/4000/4600/5000/6000VA according to the inverter model.
The procedure for connecting the LOAD port is the same as that for connecting the grid.
A change-over switch must be inserted between the EPS output of the inverter and the critical loads.
Change-over positions
The change-over switch is necessary.
When checking/repairing critical loads, make sure that the change-over switch is in the 0
position.
When checking/repairing the 1PH HYD3000-HYD6000-ZP1 inverter, make sure that the
change-over switch is in the 0 position, and that the 1PH HYD3000-HYD6000-ZP1 inverter
is disconnected from the grid.
Caution
•
Under normal conditions: change-over switch is in position 1. The 1PH HYD3000-HYD6000-ZP1 inverter can
supply power to critical loads in the event of a power failure.
•
If the 1PH HYD3000-HYD6000-ZP1 inverter is faulty, manually move the switch to position 2. The grid will
supply energy to the critical load.
Note:
If the system is equipped with a production metre, take into account that the energy for the critical load
is drawn before the meter and therefore this energy, even if produced by photovoltaic panels, is not counted
as energy produced. If necessary, the system designer can use appropriate external switch contactors to ensure
that the energy for the critical load is drawn downstream of the production meter during normal grid operation
and that it only changes over to the EPS output of the inverter in the event of a power failure.
According to the cable specifications given in below table peel the cable according to the following below figure.
Then install the EPS connector according to the in accordance with the previous chapters. Finally, insert the
installed EPS connector into the corresponding position of the inverter according to the figures below
Figure 30 – Stripping diagram
