Fronius IG-TL 3.0, Operating Instructions Manual

Page: 34 / 140

32
AC cable cross
section For a standard M32 metric screw joint with a reducer:
Cable diameter 7 - 15 mm
For an M32 metric screw joint (reducer removed):
Cable diameter 11 - 21 mm
(a cable diameter of 11 mm reduces the strain relief force from 100 N to a max. of 80 N)
For an M40 metric screw joint (option):
Cable diameter 19 - 28 mm
If required, use reducers for smaller cable diameters.
Safety
Connecting the
Fronius IG TL to
the public grid
(AC)
WARNING! An electric shock can be fatal. Danger from grid voltage and DC volt-
age from solar modules.
-
Never work with live wires! Prior to all connection work, make sure that the
AC and DC wires are not charged.
- Only an authorized electrician is permitted to connect this inverter to the pub-
lic grid.
CAUTION! Danger of damaging the inverter from improperly connected termi-
nals. Improperly connected terminals can cause thermal damage to the inverter
and may cause a fire. When connecting the AC and DC cables, make sure that
all terminals are tightened securely using the proper torque.
NOTE! Finely stranded cables up to conductor class 5 can be connected to the
AC-side terminals without wire end ferrules.
* Tightening torque:
min. 1.5 Nm
max. 1.7 Nm
** Tightening torque: 7.5 Nm
NOTE! When attaching the AC cable using metric screw joints, make sure that no
kinks form in the connected conductor cables. Otherwise, you may no longer be
able to close the inverter.
1
60-80 mm
12 mm
AC
OFF
1
3
5 4
2
1
7
6
3x
*
**
2