Connect Pv Generator To Device - Kaco blueplanet 87.0 TL3 Betriebsanleitung

6.5.2 Making the grid connection
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 "DC
parameters" menu Configuration via web user interface.
For questions regarding the appropriate type, please contact the installer or our KACO new energy cus-
tomer service.
4-pole connection, TN, TT system
↻ The grid connection has been prepared.
↻ AC cables equipped with an M10 ring cable lug [max. width b. 42 mm ]
1 Slacken the nut and lock washer at the marked earthing point.
2 Place the earth cable at the earthing point. Secure it with the nut and lock
washer provided [ W_17 /
3 Place the cable lug of cores L1 / L2 / L3 on the busbar in accordance with the la-
beling and secure it with a nut, screw and lock washer (fastening elements in
scope of supply) [ W_17 /
4 Check that all connected cables are fitted securely.
5 Tighten AC cable fittings [ W_46 /
» The device is now connected to the power grid.
6.6

Connect PV generator to device

6.6.1 Checking the PV generator for a ground fault
DANGER
Risk of fatal injury due to electric shock!
Severe injury or death will result if the live connections are touched. When there is sunlight present on the
PV generator, there is DC voltage on the open ends of the DC cables.
› Activate the connection power at the switchbox or string combiner with the DC isolator switch.
› The DC connection is intended exclusively for PV generators. Other sources fall within the scope of im-
proper operation (e.g. batteries).
› Only touch the PV generator cables on the insulation. Do not touch the exposed ends of the cables.
› Avoid short circuits.
› Do not connect any strings with a ground fault to the device.
Ensure that there is no ground fault
1 Measure the DC voltage between the protective earth (PE) and the positive cable of the PV generator.
2 Measure the DC voltage between the protective earth (PE) and the negative cable of the PV generator.
ð If stable voltages can be measured, there is a ground fault in the DC generator or its wiring. The ratio between
the measured voltages gives an indication as to the location of this fault.
3 Rectify any faults before taking further measurements.
4 Measure the electrical resistance between the protective earth (PE) and the positive cable of the PV generator.
5 Measure the electrical resistance between the protective earth (PE) and the negative cable of the PV generator.
ð In addition, ensure that the PV generator has a total insulation resistance of more than 2.0 MOhm, since the
device will not feed in if the insulation resistance is too low.
KACO blueplanet 87.0 TL3 KACO blueplanet 92.0 TL3 KACO blueplanet 110 TL3 KACO blueplanet 125 TL3
KACO blueplanet 137 TL3 KACO blueplanaet 150 TL3
10 Nm].
30 Nm].
7.5 Nm].
3 4
1 2
Ground
Fig. 14: 4-Pole AC grid connection
1 L1 busbar
2 L2 busbar
3 L3 busbar
4 Ground - earthing point
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