SMA SI 3324 Errata - Manual (Page 4)

SMA Solar Technology AG Electrical Connection
Installation Guide 4/16 SI3324_4248-E-IEN094410
1.3 DC connection
1.3.1 Check Connection Requirements
Connecting the Battery
Connect a suitable battery to the DC side.
The DC connection must be established in observance of all applicable regulations
(e.g., DIN EN 50272-2, "Safety Requirements for Batteries and Battery Systems - Part 2: Stationary
Batteries").
Cable Protection
WARNING!
Risk of burns or even death due to arcing and short-circuiting when connecting
the battery.
• Follow all safety and maintenance instructions provided by the battery manufacturer.
• Use special (insulated) tools to mount and install the battery.
• Make sure the cross-section of the cables is adequate and the polarity of the cables
leading to the battery is correct.
WARNING!
Risk of lethal electric shock.
The internal DC circuit breaker of the Sunny Island 3324/4248 is designed such that it can
interrupt currents of up to 10 kA.
If no external cable protection (load-disconnecting switch) exists, then the DC cables must
be protected against ground faults and short circuits.
• In addition to the DC circuit breaker, install a BatFuse (external DC fuse) between the
Sunny Island 3324/4248 and the battery as a cable protection and load
disconnection unit.
• Mount the fuse in accordance with the information provided in the installation guide
for the BatFuse and in accordance with the cable cross-sections used.
NOTICE!
Function impairment of devices on the DC side
The Sunny Island is NOT suitable for use with DC supply grids.
Function impairment can occur on devices installed on the DC side of a Sunny Island with
cables exceeding 30 meters and with a flexible connection.
• Only use fixed installations.
• Do not use cables of lengths greater than 30 meters between the Sunny Island and
the battery and/or DC device.