KACO blueplanet 1502xi - Manual (Page 36)

Page 33 33 31000770-02-112609 blueplanet Operating and Installation Instructions 1502xi - 5002xi
AC Connections are a 3 or 4 wire connection. In 4 wire systems
incorporating a Neutral there will be the following connections;
Line-1, Line-2, Neutral, and Ground. In 3 wire systems not
incorporating a Neutral there will be the following connections;
Line-1, Line-2, and Ground.
We recommend the following conductor cross-sections for
cable lengths up to 60 feet:
– blueplanet 1502xi: AWG 12 up to AWG 4
75°C Copper Wire
– blueplanet 2502xi: AWG 12 up to AWG 4
75°C Copper Wire
– blueplanet 3502xi: AWG 12 up to AWG 4
75°C Copper Wire
– blueplanet 5002xi: AWG 8 up to AWG 4
75°C Copper Wire
Larger cross-sections should be used for longer leads.
NOTE
Use Copper Conductors only.
The following AC over-current protection must be used for the
installation of the inverter.
– blueplanet 1502xi → 15 A Breaker
– blueplanet 2502xi → 20 A Breaker
– blueplanet 3502xi → 25 A Breaker
– blueplanet 5002xi → 30 A Breaker
!
DANGER
Risk of electric shock at live connections.
Check that the power lead is voltage-free before
inserting it into the connection box.
!
WARNING
To reduce the risk of fire, connect only to a
circuit provided with the required branch-circuit
overcurrent device sized in accordance with the
National Electrical Code, ANSI/NFPA 70. The
maximum size overcurrent device shall not be more
than 15 A for the 1502xi, 20 A for the 2502xi, 25 A
for the 3502xi and 30 A for the 5002xi.
NOTE
Be sure to use cables with a sufficiently large cross-section
to avoid excessive line impedance between the building’s
distribution box and the respective blueplanet unit.
When the line impedance is high, i.e. long AC-side leads,
the voltage at the line terminals of the inverter will increase
as power is being fed in to the grid. The inverter measures
this voltage. If the voltage at the grid terminals exceeds the
line overvoltage limit, the inverter will switch off due to line
overvoltage. This condition must be taken into consideration
when wiring the AC and dimensioning the AC lead.
! CAUTION
Check that the leads are properly connected.
ACTION
Once again, ensure that all connected leads are firmly
connected.
PV generator connection
The PV generator leads are connected on the left side of the
connection box terminal block.
5.7 Interfaces
All interfaces are connected on the communication circuit board.
The circuit board is in the connection box.
Figure 5.19: Communication circuit board with
highlighted RS485 termination switch
Section 5 · Installation and Start-Up
RS485 Termination Switch