Operation and installation manual
Page 58 of 96
(PVI-STRINGCOMB (-S, -MC, -S-MC) - Rev:1.0)
10 DISCONNECTION AND MAINTENANCE
This chapter describes the operations necessary to disconnect the device and to
operate inside the same safely.
The type of disconnection depends on the work to be carried out.
If the device is being scrapped, it must be completely disconnected.
The equipment is designed to provide a lifetime operation of not less than five
years, in the environment and for the type of application specified. No routine
maintenance operations are envisaged, whereas unscheduled maintenance
interventions are not generally predictable and are due to verify the installation, to
disconnect the photovoltaic field and to replace faulty components.
10.1 Disconnection of the PVI-STRINGCOMB(-S)
If it is necessary to remove the PVI-STRINGCOMB(-S) or, in any case, to insulate
it completely from the rest of the system, it is absolutely necessary to disconnect
the device on both DC sides, i.e. from the photovoltaic field and from the inverter.
To do this, the voltage supplied by the individual strings and that from the DC
output voltage connected to the inverter must be cut off.
