
Technical Description
13
Cooling Concept
REFUsol 20K...33K-2T
982079 | 05 | 2021-03
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Fig. 5: Overview circuit diagram
REFUsol 20K...33K-2T
(for REFUsol 20K-2T: 2 x PV per MPPT input; for 33K-2T: 3 x PV/MPPT input)
IN1
L1
L2
L3
N
PE
IN2
MPPT1
MPPT2
RCD
ISO 1
ISO 2
DC input
DC switch
DC EMC fil
ter
DC-DC boos
ter
DC-A
C inv
erter
A
C grid r
elais
A
C EMC fil
ter
A
C output
microSD
card
Ethernet/WiFi
(optional)
RS485
In/Out
Remote
control
Alarm
(optional)
Control board
Isolation
monitoring
A
C r
esidual curr
ent det
ection
Communication
Display and
control
panel
Summary of Contents for 20K-2T
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