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REFUsol 48K-UL
REFU Elektronik GmbH
1)
DC switch
2)
DC overvoltage protection type 3 (SPD)
3)
DC EMC filter
4)
DC current measurement
5)
Isolation monitoring
6)
DC voltage measurement
7)
AC current measurement
8)
AC grid relays (redundant)
9)
AC voltage and frequency measurement
10)
AC EMC filter
11)
AC overvoltage protection type 3 (SPD)
12)
Fault current monitoring, Type 2
13)
Protective earth connection
14)
Interfaces (Ethernet, RS485, Sensors, remote stop)
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3.5
System Block Diagram
Fig. 4: System block diagram (exemplarily described on the 48K-UL model)
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3.6
Control Panel
The graphical user interface which is integrated on the front of the device and comprises 128 x 64 pixels can
be used to display the development of data, such as the feed-in power or yield. The parameters required are
selected and entered on the 8-key control panel. The control panel is illuminated when a key is pressed and
turns dark automatically.