SMA SI 6.0H-13, Operating Manual

Page: 36 / 188

6 Electrical Connection SMA Solar Technology AG
Operating manual SI44M-80H-13-BE-en-15 36
Cable requirements when using the inverter with an enwitec BAT FUSE HERITAGE 01 or
enwitec BAT FUSE HERITAGE 03 battery fuse:
Sunny Island Cable
length
5)
Conductor cross-
section Cable diameter Terminal lug
SI8.0H ≤ 5 m 70 mm² 14 mm to 25 mm M8, 20 mm to 25 mm wide
> 5 m 95 mm² 14 mm to 25 mm M8, 20 mm to 25 mm wide
SI6.0H ≤ 5 m 50 mm² 14 mm to 25 mm M8, 20 mm to 25 mm wide
> 5 m 70 mm² 14 mm to 25 mm M8, 20 mm to 25 mm wide
SI4.4M ≤ 5 m 50 mm² 14 mm to 25 mm M8, 20 mm to 25 mm wide
> 5 m 70 mm² 14 mm to 25 mm M8, 20 mm to 25 mm wide
WARNING
Danger to life due to incompatible lithium-ion battery
An incompatible lithium-ion battery can lead to a fire or an explosion. With incompatible lithium-ion batteries, it is
not ensured that battery management is intrinsically safe and will protect the battery.
• Ensure that the lithium-ion batteries are approved for use with the Sunny Island (see technical information “List
of Approved Batteries” at www.SMA-Solar.com).
• If no lithium-ion batteries approved for the inverter can be used, lead-acid batteries can be used.
• Verify that the battery complies with locally applicable standards and directives and is intrinsically safe.
Procedure:
1. Ensure that the load-break switch of the battery fuse is open and secured against reconnection.
2. On the Sunny Island, remove all screws of the lower enclosure lid using an Allen key (AF 5) and remove the
enclosure lid. Retain the screws and conical spring washers for later use.
3. Connect the DC power cable of the battery fuse with the correct polarity (see Section 6.6.1, page 55).
6.5.2 Connecting the Utility Grid in the System for Increased Self-Consumption
Relevant for systems connected to the utility grid
Requirements:
☐ The system may not be a battery-backup system or an off-grid system.
☐ For connection of the Sunny Island inverter to the utility grid, there must be a circuit breaker and a type A residual-
current device on the distribution board (see circuitry overview in the quick reference guide "SMA Energy System
Home")
Procedure:
1. On the Sunny Island, connect the power cable to the AC2 Gen/Grid . When doing so, connect the line
conductor to AC2 Gen/Grid L and the neutral conductor to AC2 Gen/Grid NTT (see Section 6.6.2,
page 57).
5)
Cable length from the battery to the Sunny Island via the fuse switch-disconnector