Kaco Powador 3200 Operating instructions manual - Notice
Page 12
Installation instructions Powador 3200 / 4400 / 5300 / 5500 / 6600_EN
S e c t i o n 5 ·
I n s t a l l a t i o n a n d S t a r t - U p
Grid connection
The inverter feeds in single-phased at terminal L1. The grid con-
nection is made using 3 conductors (L1, N, PE) or 5 conductors
(L3, L2, L1, N, PE). The 5-conductor connection is only required
when 3-phase grid monitoring is used. This is only necessary
with certain systems. 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 3200/4400
2.5 mm
2
– Powador 5300
4.0 mm
2
– Powador 5500/6600
6.0 mm²
Larger cross-sections should be used for longer leads. The
maximum clamping range of the cable fi tting is 21 mm.
In accordance with VDE 0100 part 430, “Protection of cables
and lines against overcurrent”, NYM cables with fi xed wiring
should be protected as follows:
Installation type B2 (multi-conductor lead in pipe or duct, either
on or in walls or fl ush-mounted) at an ambient temperature
of +25°C.
– 2.5 mm² → 20 A
– 4.0 mm
2
→ 25 A
– 6.0 mm
2
→ 35 A
NOTICE
The largest fusing allowed is a B35 automatic circuit breaker,
even if the cross-section of the cable that has been laid
would allow a larger fusing. Always follow the applicable
regulations regarding the cross section and the manner of
laying the cable.
Figure 5.5: AC connection
NOTICE
Be sure to use cables with a suffi ciently large cross-sections
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 grid terminals of the inverter increases
during feed-in to the grid. The inverter measures this volt-
age. 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 considera-
tion when wiring the AC and dimensioning the AC lead.
Even when multiple inverters are distributed across the
individual grid phases, the cross section of the N conductor
must correspond with the cross section of the individual
phases. It cannot be made smaller.
D A 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.
ACTION
Guide the lead, which has been stripped of its jacket and
insulation, through the cable fi tting.
Connect the lead, which has been stripped of its jacket
and insulation, as shown on the label on the right side of
the PCB terminal.
C A U T I O N
Check that the leads are properly connected.
ACTION
Once again, ensure that all connected leads are fi rmly
connected.
Tighten the cable seal of the cable fi tting.