Electrical Installation Photovoltaic Generator; Electrical Wiring Safety Precautions; Cabling - Solar Frontier PowerSet 6.0-170-3p Bedienungsanleitung

5.3

Electrical installation photovoltaic generator

5.3.1

Electrical wiring safety precautions

• The sum of Voc of modules in series must not exceed the maximum system volta-
ge of the module under any condition. Reverse current applied to the modules
must not exceed 7 A.
• Do not touch or handle the PV module, terminal box or the end of output
cables with bare hands.
• Do not carry out installation when PV modules, installation tools or installation
area are exposed to water.
• Ensure that the connection parts between SF modules and power receiving
devices are isolated and waterproof. Using SF modules with insufficient isola-
tion and waterproofing could result in an electric shock, an electric leak or an
accident.
• Keep the junction box and connecting cables away from any liquids until the
connectors are mated. Failure to do this may cause faulty wiring.
• The connecting components between the modules must be compatible
with the connecting system. They must enable them to work perfectly and
completely safely.
• Inverters must meet the technical requirements of SF modules.
• Do not connect the PV modules directly to loads such as motors. Variation in
output power may damage the motor.
• Observe and understand the safety instructions of batteries. Their misuse can
result in serious bodily harm due to high electrical current.
• Cables should be adequately protected from damage by wildlife.
5.3.2

Cabling

Solar Frontier places great value on delivering as many components as possible
pre-assembled in order to help avoid sources of error.
As each roof and PV installation has its own peculiarities, certain cables have to be
adapted on site to the system and assembled accordingly. For example, the cables
for extending the connecting cables to reach the inverter have to be assembled
on site. In addition, if there are obstructions on the roof (e.g. dormers) it may be
necessary to bridge the increased distance with extension cables. The DC cable,
sockets and plugs which are included in the PowerSet are for this purpose.
An Amphenol crimping tool (H4TC0001) is also required for crimping the contacts.
This is not included in the PowerSet. Pre-assembled connecting cables must not
be altered.
Please ensure a clean and proper assembly of the cables to avoid error sour-
ces and to ensure safe cabling.
The following tools are required to assemble the cables:
- Mounting key (not included in the delivery)
- Crimping tool for twisted contacts (not included in the delivery)
- Insulation stripping pliers (not included in the delivery)
Shortening and stripping the insulation from the DC cable
First, the cable has to be shortened to the proper length. Then the outer insulation
is removed with suitable insulation stripping pliers to a length of 7-8 mm.
Please take care not to damage the wires in the DC cable. This could reduce
the cross section and cause electrical faults.
See Figures 8 and 9:
Crimping the twisted contacts
Push the stripped end of the cable into the opening in the crimp sleeve as shown
in Figure 10. Make sure that all of the wires are inside the contact crimp sleeve.
The wires must be visible in the small opening.
Figure 8
Figure 9
Figure 10
Inspection hole
Use only the Amphenol crimping tool (H4TC0001) to crimp the contacts. For more
detailed information on using the crimping tool please consult the manufacturer's
operating manual.
See Figures 11 and 12:
A visual check of the crimping results and a pull test are needed to ensure correct
crimping. See Figures 13 and 14.
The pull test should be for at least 310 Newton.
Assembling the plugs and sockets
To assemble the plugs and socket the respective cover should be pushed over the
contact until a clear click is heard or felt. The click shows that the contact is in the
right position in the plug/socket. Contacts cannot be released when they have
been positioned.
See Figures 15 to 18:
The covering cap is to be tightened with 2.6 to 2.9 Nm. A suitable installation
spanner can be used for this purpose.
6
Figure 11 Figure 12
Figure 13
Figure 14
Figure 15
Figure 16
Figure 17
Figure 18