Heckert Solar NeMo 3.0, Инструкция по установке и эксплуатации

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Pleasure ensure that there is no tension when routing the cables and that the plug and
crimp are properly connected!
Depending on the module performance and inverter type, different length strings are
possible. Make absolutely sure that the permissible system voltage cannot be achieved
at full-load (V
OC
) and at low temperatures.
Parallel boarding of PV modules
When wiring our brand modules, it should be noted that string fuses (safety fuse 16 A) must be used for the parallel
boarding of more than 2 strings.
The maximum reverse current load capacity is 20 A. Where more than two strings are connected in parallel, this may
be exceeded in the case of a fault.
Electrical installation
Connection of the inverter to the public electricity network must be carried out by an authorised specialised company.
Even at low solar radiation, there is high DC voltage. Never touch unpro and -
cables that are in operation!
Equipotential bonding
The requirements for the lightning and surge protection are dependent on the local conditions. Where there is already
an external lightning protection system in place or planned for the building, the PV system must be integrated in the
protection system against a direct lightning strike.
When using transformer-less inverters, due to the galvanic isolation, equipotential bonding may be required for reasons
of personal safety. Country-specific laws shall apply.
The responsibility for a professional equipotential bonding of the module frame lies with the installing company. Country-
specific standards must be adhered to.
A hole is drilled in the middle of the short sides of the module frame for equipotential bonding, and is marked with the
corresponding symbol (Figure 8).
An M4 screw is required for equipotential bonding. The fixing must be carried out using a spring washer or toothed
washer to ensure that the anodized layer is penetrated.
Figure 8: Equipotential bonding symbol and execution
Fire prevention
The installation of on-roof systems can affect the fire safety of a building; improper installations can result in a hazard
in case of fire. Please observe LBO Building Law requirements. In the event of on-roof systems, the Heckert Solar
brand modules must be installed above a fire-resistant surface (“hard roofing” in accordance with DIN 4102-4). The
- Cable clamp
- Screw
- Toothed washer
- Nut