SMA SI 3324 Installation - Manual (Page 36)

Electrical Connection SMA Technologie AG
Page 36 SI3324/4248-14:SE2406 Installation Guide
5.2 DC Connection
5.2.1 Safety Precautions/Conditions
Connect a suitable battery to the DC side. DC must be connected observing all valid
regulations (e.g. DIN VDE 0510, Rules for Accumulators and Battery Systems).
All safety and maintenance instructions provided by the battery
manufacturer must be heeded.
Working in the vicinity of lead acid batteries is dangerous!
Batteries produce explosive gases in normal operation. Ensure
that the battery compartment is sufficiently ventilated. If battery
boxes are used, the accumulation and concentration of hydrogen
gas in "bubbles" in the upper portion of the housing must be
prevented. Aerate the battery compartment from the highest
point. Open flames or smoking in the vicinity of the battery are
NOT permitted under ANY CIRCUMSTANCES!
Danger of acid injury:
Battery acid is extremely corrosive. Always wear protective
gloves and eye protection. Batteries must not be tilted, since acid
may leak out of the ventilation holes.
Use appropriate (insulated) tools for installation and wiring of the
batteries (danger of short circuits and arcing).
When connecting the battery, ensure that the cable has sufficient
cross-section and that the connections have the correct polarity.
The battery cables should be as short as possible. Long cables and an
insufficient cable diameter reduce system efficiency and overload capability,
thus negatively affecting the battery management function.
Do not lay the battery feed cables under plaster or in armored plastic pipes.
Large currents flow through the battery cables so that they can become very
warm.