NOTE
If an external residual current circuit breaker is necessary due to the installation specification, a type A resid-
ual current circuit breaker must be used.
If a residual current circuit breaker B is used, the menu item "Compatibility with type B – RCD" must be en-
abled Configuration via web user interface. This can affect the efficiency somewhat.
If one of these types is used, it must have a protective rating of at least 1250 mA.
For questions regarding the appropriate type, please contact the installer or our KACO new energy customer
service.
4.3
Connecting the PV generator to the device
The DC connection is intended exclusively for PV generators. Other sources fall within the scope of improper operation
(e.g. batteries).
↻ Time required for connecting the PV: 15 min
↻ DC generators comprehensively checked to ensure there is no ground fault
↻ DC polarity checked before connection made to device.
1 Disconnect the connection line from the optional switch box via the DC isolator switch.
2 Check the DC polarity before making the connection to the device.
3 Only connect DC generators that have been comprehensively checked to ensure there is no ground fault.
4.3.1 Recommended standard connection
1
3
2
4
n
n
n
4
3
n
2
1
Fig. 7: All DC inputs separated for M8 /M10 variant
Connection variant: All DC inputs separated
2 strings each to one MPP tracker.
ATTENTION: With this installation, all strings must be connected individually and set in the menu item „DC configura-
tion "selected and activated. An incorrectly configured DC input will damage the device.
The 2 strings on a MPP tracker must have the same voltage. (U
NOTE: The voltage at the MPP trackers can be different. They are supplied by separate, independently operating
MPP trackers (MPP trackers 1 and 2).
1
Per MPP tracker P
:
/
(M8) respectively
max
8
I
current per tracker < max. rated current (DC)
max:
Tab. 2: Electrical data of the installation
Page 8
5
6
M8
M10
...
...
...
...
...
...
n1
1
/
(M10) the recommended PV generator power.
10
7
8
...
...
...
=U
/ U
=U
)
n2
n3
n4
KACO blueplanet 100 NX3 KACO blueplanet 125 NX3
9
10
n
n
n
20
19
n
18
17