Kaco blueplanet 15.0 TL3 Mode D'emploi page 21

Possible wiring variants
The MPP voltages of the two DC
strings can be different. They are
supplied by separate, independ-
ently operating MPP trackers
(MPP trackers A and B).
Number of modules per string: n
n =n
3 4
P per string < 0.5 * max. recommen-
max :
ded PV generator power
MPP tracker A+B together < max. re-
commended PV generator power
I Amperage per tracker < max. rated
max:
current (DC)
Tab. 3: Electrical data of the connection
7.6.4 Designing the PV generator
CAUTION
Damage to components due to faulty configuration
In the expected temperature range of the PV generator, the values for the no-load-voltage and the short
circuit current must never exceed the values for U
› Observe limit values in accordance with the technical data.
NOTE
Type and configuration of the PV modules.
Connected PV modules must be dimensioned for the DC system voltage in accordance with IEC 61730 Class
A, but at least for the value of the AC grid voltage
7.6.5 Connecting the PV generator
DANGER
Risk of fatal injury due to electric shock!
Severe injury or death will result if the live connections are touched. When there is sunlight present on the
PV generator, there is DC voltage on the open ends of the DC cables.
› Only touch the PV generator cables on the insulation. Do not touch the exposed ends of the cables.
› Avoid short circuits.
› Do not connect any strings with a ground fault to the device.
KACO blueplanet 15.0 TL3 KACO blueplanet 20.0 TL3
If one of the MPP trackers (A or B) is not used,
then it must be short-circuited, otherwise faults
can occur during the self-test of the unit and the
feed-in operation is not guaranteed. The short-
circuiting of an MPP tracker does not result in
the device being damaged.
=n , Number of modules per string:
1 2
n =n =n
1 2 m
P Per string < 0.5*max. recommen-
max:
ded PV generator power P
MPP tracker used < max. power per
MPP tracker
I < max. rated current (DC)
max:
The DC inputs can also be connected
in parallel. In this case, only lines with
the same MPP voltage may be con-
nected in parallel. (U
The maximum permissible rated cur-
rent (DC) doubles with parallel con-
nection of both MPP trackers.
In case of a parallel input connection,
MPP trackers A and B must be
bridged. Parallel operation is auto-
matically recognised by the inverter
Number of modules per string:
n =n =n
1 2 m
P max. recommended PV generator
max :
on the power
max
MPP tracker A+B together < max. re-
commended PV generator power
I ≤ 2 * max. rated current (DC)
max:
and I in accordance with the technical data.
dcmax scmax
=U =U ).
n1 n2 nm
Page 21