Fronius String Control 250/30 DCD DF - Manual (Page 63)

61
EN
Fitting metric screw joints to the Fronius String Con-
trol 250/30 DCD DF
General - Use the right number of metric screw joints for the available solar module strings. Fit
sealing glands into empty screw joints.
- Insert the metric screw joints in the following order:
from bottom to top and from left to right.
- Tighten the metric screw joints and blank screw joints with the tightening torque spec-
ified for their size.
Recommended
order in which to
insert the metric
screw joints
* As an outlet for the grounding cable only if optional overvoltage protection is used
Fitting metric
screw joints to
the Fronius String
Control 250/30
DCD DF
(1) Lock nut
(2) Screw joint
(3) Strain-relief device
M20
M40 M40
M20*
M25
M32 M32
3
6
1 2
4
5
15
16
10
9
11
13
12
15
24
23
25
21
20
22
7
8
18
19
17 17 17
1 2