Make The Grid Connection; Connect Pv Generator To Device; Checking The Pv Generator For A Ground Fault - Kaco blueplanet 87.0 TL3 Betriebsanleitung

1 | General information
6.5.2

Make the grid connection

4-pole connection, TN, TT system
↻ Grid connection is prepared.
↻ AC cables equipped with an M10 ring cable lug [max. width b. 42 mm ]
1. Loosen nut and lock washer at the marked grounding point.
2. Lay the grounding cable onto the grounding 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 secure fit of all connected cables.
5. Tighten AC cable fittings [ W_46 /
ð The device is connected to the power grid.
NOTE
If a residual current circuit breaker is necessary due to the installation specification, a type A residual current
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 customer
service.
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.
1. Activate the connection power at the switchbox or string combiner with the DC isolator switch.
2. The DC connection is intended exclusively for PV generators. Other sources fall within the scope of im-
proper operation (e.g. batteries).
3. Only touch the PV generator cables on the insulation. Do not touch the exposed ends of the cables.
4. Avoid short circuits.
5. 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.
4
When it is connection to a TN-C grid, the PEN grounding cable is connected to the ground earthing point.
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4
10 Nm].
30 Nm].
10 Nm].
KACO blueplanet 87.0 TL3 KACO blueplanet 92.0 TL3 KACO blueplanet 105 TL3 KACO blueplanet 110 TL3
KACO blueplanet 125 TL3 KACO blueplanet 137 TL3 KACO blueplanet 150 TL3 KACO blueplanet 155 TL3
Operating Instruction I
2
1
Fig. 17: 4-Pole AC grid connection
1 L1 busbar
2 L2 busbar
3 L3 busbar
4 Ground - earthing point
3 4
Ground
KACO blueplanet 165 TL3