Dc Connection; Requirements For The Dc Connection - SMA Sunny Tripower CORE1-US Instructions D'installation

SMA Solar Technology AG
7. Connect the conductors to the 3-pole terminal block
according to the circuit diagram, depending on the
operating mode (see Section 6.4.3, page 36).
Ensure that the conductors are plugged completely
into the terminal points (round openings) up to their
insulation.
8. Stick the 3-pole terminal block with the connected conductors into the MFR slot on the
communication assembly in the inverter.
9. Ensure that the terminal block is securely in place.
10. Ensure that all conductors are correctly connected.
11. When using the cable glands, tighten the swivel nut of each cable gland hand-tight. This will
secure the conductors.
12. Ensure that the conductors sit securely in the terminal points. Tip: To release the conductors
from the terminal block, open the terminal points using a suitable tool.
6.5

DC Connection

6.5.1

Requirements for the DC Connection

Requirements for the PV modules per input:
☐ All PV modules should be of the same type.
☐ All PV modules should be aligned and tilted identically.
☐ The maximum inverter system voltages permitted may not be exceeded (see Section 10
"Technical Data", page 62).
☐ The maximum short-circuit current may not be exceeded (see Section 10 "Technical Data",
page 62).
☐ The positive connection cables of the PV modules must be equipped with positive DC
connectors (see Section 6.5.2, page 42).
☐ The negative connection cables of the PV modules must be equipped with the negative DC
connectors (see Section 6.5.2, page 42).
Additionally required material (not included in the scope of delivery):
Requirements on the DC conductors:
☐ The conductors with regards to its ampacity, rated temperatures, operating conditions and its
power loss must be made in accordance with the local standards and the National Electrical
®
Code ANSI/NFPA 70 or the Canadian Electrical Code
☐ Conductor type: copper wire
☐ Maximum permissible temperature: 90°C
☐ 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)
Installation Manual
6 Electrical Connection
®
CSA C22.1.
STP33-62-US-41-IA-xx-13 41