Kaco Powador 2500xi Operating Instructions Manual - Action
Page 14
Installation Instructions Powador 2500xi / 3600xi / 4000xi / 4500xi / 5000xi_EN
All mandatory safety regulations, the currently required tech-
nical connection specifi cations of the responsible electrical
supply company, as well as other generally applicable local
regulations are to be adhered to.
When connecting the inverter, the AC and DC sides must be
disconnected from all power sources and secured against
being inadvertently switched back on.
The connection of the PV generator and the grid connection
are established via PCB terminals in the connection box of the
inverter (see fi gure 6.3).
Figure 6.3: Powador connection box
AC/DC-sensitive residual current circuit breaker
RCD type B
The inverter is equipped with an AC/DC-sensitive residual cur-
rent circuit breaker. If there is an impermissible residual cur-
rent, the inverter is disconnected from the grid. An external
residual current circuit breaker is, in compliance with the appli-
cable directives in the respective country, not required if a cor-
responding low-resistance earthing of the unit is possible.
Grid connection
The inverter feeds in single-phased at terminal L1. However,
the grid connection is established in various ways, depend-
ing on the country (see section 4, Technical Data). There is an
appropriate cable fi tting on the underside of the housing for
inserting the leads.
We recommend the following conductor cross-sections for
cable lengths up to 20 m:
–
Powador 2500xi / 3600xi: 2.5 mm²
–
Powador 4000xi:
4.0 mm²
–
Powador 4500xi / 5000xi: 6.0 mm²
Larger cross sections should be used for longer leads.
In accordance with VDE 0100 part 430 “Protection of cables
and cords against overcurrent”, when NYM cables are per-
manently laid, with an ambient temperature in the B2 laying
system (multi-conductor lead in the pipe or duct, either on
or in walls or fl ush-mounted) of 25 °C, the cables should be
secured as follows:
–
2.5 mm²
20 A
–
4 mm²
25 A
–
6 mm²
35 A
NEOZED fuses (gL) should be used.
S e c t i o n 6 ·
I n s t a l l a t i o n a n d S t a r t - u p
ACTION
The door of the housing must be opened to do this. The
door is held shut with two Phillips recessed-head screws
on the front of the housing.
NOTE
At the AC and DC connection terminals, the maximum
conductor cross-section that can be connected is 10 mm²
for fl exible conductors and 16 mm² for rigid conductors.
Strip off 10 mm of insulation. Tighten the terminal with a
torque of 1.2 to 1.5 Nm.
NOTE
Be sure to use cables with a suffi ciently large cross-sec-
tion to avoid excessive line impedance between the
building’s distribution box and the respective Powador
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 line terminals
exceeds the line overvoltage limit, the inverter will switch
off due to line overvoltage. This must be taken into con-
sideration when wiring the AC and dimensioning the AC
lead.
DA N G E R
Risk of electric shock at live connections.
Check that the power lead is voltage-free before
inserting it into the unit.