SMA SUNNY TRIPOWER CORE1-US Instrucciones De Instalación página 44

6 Electrical Connection
Requirements on the equipment grounding conductor of the PV array:
☐ The conductors must be made of solid wire, stranded wire or fine stranded wire.
☐ Conductor type: aluminum and copper wire
☐ Conductor cross section: 2.5 mm² to 25 mm² (14 AWG to 4 AWG)
6.5.2 Assembling the DC Connectors
For connection to the inverter, all PV module connection cables must be fitted with the DC
connectors provided. Assemble the DC connectors as described in the following (refer to the
manufacturer manual for further information on assembling the DC connectors). Be sure to observe
the correct polarity.
Additionally required material (not included in the scope of delivery):
☐ Stripping tool
☐ Crimping tool suitable for crimping the cold-formed contact ferrules (observe manufacturer
information).
☐ Tool for tightening the swivel nut (observe manufacturer information).
☐ Where applicable, tool for checking whether the conductors with contact ferrules plug far
enough into the DC connector (observe manufacturer information).
Procedure:
1. Strip off the conductor insulation by 7 mm ± 0.5 mm (0.28 in ± 0.02 in).
2. Thread the cold-formed contact ferrule onto the stripped conductor and crimp using a crimping
tool suitable for the cold-formed contact ferrule.
3. Guide the conductor with the cold-formed contact ferrule into the connector until the cold-
formed contact ferrule snaps audibly into place in the DC connector.
4. Ensure that the conductor with the cold-formed contact ferrule is plugged far enough into the
DC connector and has snapped into place.
5. Tighten the DC connector swivel nut (Torque: 3.5 Nm to 4 Nm (31 in-lb to 35 in-lb)).
6.5.3 Connecting the PV Array
Damage to the product due to ground fault on DC side during operation
Due to the transformerless topology of the product, the occurrence of ground faults on DC side
during operation can lead to irreparable damage. Damages to the product due to a faulty or
damaged DC installation are not covered by warranty. The product is equipped with a protective
device that checks whether a ground fault is present during the starting sequence. The product is
not protected during operation.
• Ensure that the DC installation is carried out correctly and no ground fault occurs during
operation.
44 STP33-62-US-41-IA-xx-14
NOTICE
SMA Solar Technology AG
Installation Manual