SMA SUNNY TRIPOWER CORE1-US - Changing User Passwords

6 Electrical Connection
SMA Solar Technology America LLC
Installation Manual STP50-US-40-IA-en_es-11 29
Requirements on the DC conductors:
☐ The conductors with regards to their ampacity, rated temperatures, operating conditions and
power loss must be made in accordance with the local standards and the National Electrical
Code
®
ANSI/NFPA 70.
☐ Conductor type: copper wire
☐ Maximum permissible temperature: +90°C (+194°F)
☐ The conductors must be made of solid wire, stranded wire or fine stranded wire.
☐ External diameter: 5.3mm to 7.65mm (0.21in to 0.30in)
☐ Conductor cross-section: 4mm² to 6mm² (12AWG to 10AWG)
Requirements on the equipment grounding conductor of the PV array:
☐ Conductor type: aluminum or copper wire
☐ The conductors must be made of solid wire, stranded wire or fine stranded wire.
☐ Conductor cross section: 2.5mm² to 25mm² (14AWG to 4AWG)
6.4.2 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). Ensure the correct
polarity when doing so.
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)).
ENGLISH