Operation Manual

Protect PV.250 Operating Instructions
Page 9 of 51 80000027023 BAL, en
2 Safety Instructions
i
NOTE:
All the key safety instructions are specified in the document entitled
"Installation Instructions and Start-Up".
3 System Description
3.1 General
This chapter describes the operating modes and functions of the
Protect PV.250.
3.2 Operating Modes
Two different operating modes may be used:
• Individual operation
• Partner operation
3.2.1 Individual Operation
In individual operation, the inverter works independently and is not
connected to any other inverters. The DC infeed from the PV cells
and the link to the AC mains are only connected to this inverter.
Switching operations, control commands and modifications to set-
ting parameters are only performed by the unit concerned.
3.2.2 Partner Operation
In partner operation, two inverters are connected via a CAN bus.
The DC voltage infeeds of both units can be linked using a tie
switch. Levels of efficiency can be increased in this operating
mode by running one inverter on two connected PV cells at less
than full power. It is the inverter itself that connects and discon-
nects the DC voltage; it is also responsible for switching the units
on and off.
This operating mode is described in detail in Chapter 4.5.