SolarMax 10ES-T, Инструкция по эксплуатации

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former, the ES-T systems have been fitted with all the required safety devices, as described
in the following sections.
Anti-islanding
The ES-T systems are equipped with an advanced anti-islanding protection system, i.e. with a
protective automatic disconnecting system that is enabled in the event of a grid power outage
or of voltage and/or frequency faults detected on the grid in order to avoid off-grid operation,
which could be dangerous for the members of staff who work on the grid and for the loads
connected to it. The safety system is fully compliant with the national relevant standards and
legislation.
Earth Leakages of the PV panels
The ES-T systems must be used with PV panels isolated by a ground wire (earth), i.e. with the
positive and negative terminals without direct connections to ground. To this effect, a built-in
protective and monitoring circuit constantly monitors the connection to ground and disables
the ES-T system when a fault is detected on the system by immediately displaying the asso-
ciated alarm through the graphic interface.
The ES-T system can only be used with PV systems compliant with Class A specific require-
ments, in compliance with IEC 61730 standard requirements.
Converter Earth Leakages
The ES-T systems are fitted with a residual current monitoring unit (RCMU) in compliance with
the requirements of IEC / EN 62109-2 safety standard. The device in question only protects
the system from earth leakages occurring upstream of the AC OUT terminals (i.e. towards the
DC side of the PV system and the-refore towards the PV panels). Leakage currents that could
occur in the AC section between the PPC (Point of Common Coupling) point and the ES-T are
not detected and require an external RCD.
PV Inputs DC Switch
The inputs of the PV1 and PV2 photovoltaic field of the ES-T system are equipped with a dual
two-poles switch to disconnect the DC lines in question.
PV String Fuses
If necessary, it is advisable to install PV fuse board equipped with string fuses. The fuses
rating must be carefully evaluated during the installation.
Battery Overcurrent Protection and Safety Fuse
The battery input is electronically protected from overcurrent. In case of an internal fault in the
control system, the battery input is protected by a safety fuse (30A 1000V gPV).
Automatic Battery Switch
The ES-T system is equipped with an automatic battery disconnecting switch which guaran-
tees the correct connection/disconnection and operation of the batteries. When the system
detects anomalous operating conditions and in cases where the ON/OFF switch is disabled for
maintenance and/or malfunction of the system itself, the disconnector switch is automatically
enabled, and the battery is safely disconnected from the system. In these conditions it is
possible to carry out the battery maintenance.