7.5.3
Make the grid connection
5 core connection for TN-S system, TN-C-S system, TT-System
↻
Grid connection is prepared.
1 Loosen nut and lock washer at the marked grounding point.
2 Lay the grounding cable onto the grounding point. Secure using the corresponding nut and lock washer [ W_13/
10 Nm].
3 Connect wires in accordance with the labels on the screw terminal [ T_45 / 10 Nm].
4 Check secure fit of all connected cables.
5 Tighten the cable fittings [ W_68 / 20 Nm]
.
6 Secure cover using the 4 screws [ _T15 / 2.3 Nm].
»
The device is connected to the power grid.
»
NOTE: If there is a 5-core connection, an inserted contact bridge may trigger any RCD that is present. The instruc-
tions given above must therefore be carefully followed.
4-core connection, TN-C system
↻
Grid connection is prepared.
1 Connect lines in accordance with the labels on the name plate on the screw ter-
minal [ T_45
/
10 Nm].
2 Check secure fit of all connected cables.
3 Tighten the cable fittings [ W_66 / 13 Nm].
»
The device is connected to the power grid.
Fig. 24:
4-pole connection
NOTE
An AC-side disconnection unit must be provided during the final installation stage. This disconnecter mech-
anism must be installed so that it can be accessed at any time without obstruction.
NOTE
If a residual current circuit breaker is necessary due to the installation specification, a type A residual cur-
rent circuit breaker must be used.
If the type A is used, the insulation threshold must be set to greater than/equal to (≥) 200kOhm in the
“Parameters” menu Menu [See section 9.4.1
For questions regarding the appropriate type, please contact the installer or our KACO new energy cus-
tomer service.
NOTE
When the line resistance is high, i.e. long cables on the grid side, the voltage at the grid terminals of the
device will increase in feed-in mode. If the voltage exceeds the country-specific grid overvoltage limit
value, the device switches off.
›
Ensure that the cable cross-sections are sufficiently large or that the cable lengths are sufficiently
short.
Kaco blueplanet 29.0TL3
Page 24
EN
