Fronius String Control 250/25 DCD DF - Manual (Page 73)

15
EN-US
4
5
3
2
1 6
25
6
25
4
5
3
2
1
1
2
3
4
5
6
25 25
1
2
3
4
5
6
+
-
- -
+
-
Recommended sequence for inserting and connecting DC cables
Notes for
Connecting
Solar Module
Strings to the
Fronius String
Control 250/25
DCD DF
(continued)
DC- DC+
B (in) B‘ (out) A‘ (out) A (in)
DC+ DC-
B (in) B‘ (out) A‘ (out) A (in)
Terminal assi-
gnment for
grounded
solar modules For grounded solar modules, only the ungrounded poles of the solar
module strings may be connected to the fuse-protected terminals (A).
Negative solar module ground
Positive solar module ground