SMA MD.SEN-US-40, Installation Manual, Page: 15 / 36

6 Connection SMA Solar Technology AG
Installation Manual MDSEN-US-40-IA-en-13 15
6 Connection
6.1 Cable Requirements
UV resistance of connection cables
Connection cables to be laid outdoors must be UV-resistant or routed in a UV-resistant cable
channel.
Cable type Requirements
Cable for shielding the
analog input and the
temperature inputs ☐ Number of conductors: 1
☐ Conductor cross-section: 1.5 mm² (16 AWG)
☐ Cable length: 120 mm (4.71 in)
Connection cables for
temperature inputs ☐ Number of insulated conductors for tolerance ±2°C (±3.6°F): at
least two
☐ Number of insulated conductors for tolerance ±0.5°C (±0.9°F): at
least four
☐ Shielding: yes
☐ Conductor cross-section with four-conductor connection technology:
at least 4 x 0.25 mm² (24 AWG)
☐ Maximum cable length for four-conductor connection technology:
20 m (65 ft)
☐ Conductor cross-section for two-conductor connection technology: at
least 2 x 0.25 mm² (24 AWG)
☐ Maximum cable length for two-conductor connection technology:
2.5 m (8 ft)
☐ External cable diameter: 4.5 mm to 7.0 mm (0.18 in to 0.28 in)
Connection cable for
analog input ☐ Number of conductors: at least 2
☐ Shielding: yes
☐ Conductor cross-section: 0.2 mm² to 1.5 mm² (32 AWG to
16 AWG)
☐ Maximum cable length: 30 m (98 ft)
Connection cable for
S0 interface ☐ Number of conductors: 2
☐ Shielding: yes
☐ Conductor cross-section: 0.2 mm² to 1.5 mm² (32 AWG to
16 AWG)
☐ Maximum cable length: 30 m (98 ft)
6.2 Preparing the Connection Cable
Prepare each connection cable for connection and the cable for shielding the analog input and the
temperature inputs in accordance with the following procedure for connection to the multipole
terminal blocks.